hope i helped - Page 332

Array sorting efficiency... Beginner need advice

- by SoleSoft

I'll start by saying I am very much a beginner programmer, this is essentially my first real project outside of using learning material. I've been making a 'Simon Says' style game (the game where you repeat the pattern generated by the computer) using C# and XNA, the actual game is complete and working fine but while creating it, I wanted to also create a 'top 10' scoreboard. The scoreboard would record player name, level (how many 'rounds' they've completed) and combo (how many buttons presses they got correct), the scoreboard would then be sorted by combo score. This led me to XML, the first time using it, and I eventually got to the point of having an XML file that recorded the top 10 scores. The XML file is managed within a scoreboard class, which is also responsible for adding new scores and sorting scores. Which gets me to the point... I'd like some feedback on the way I've gone about sorting the score list and how I could have done it better, I have no other way to gain feedback =(. I know .NET features Array.Sort() but I wasn't too sure of how to use it as it's not just a single array that needs to be sorted. When a new score needs to be entered into the scoreboard, the player name and level also have to be added. These are stored within an 'array of arrays' (10 = for 'top 10' scores) scoreboardComboData = new int[10]; // Combo scoreboardTextData = new string[2][]; scoreboardTextData[0] = new string[10]; // Name scoreboardTextData[1] = new string[10]; // Level as string The scoreboard class works as follows: - Checks to see if 'scoreboard.xml' exists, if not it creates it - Initialises above arrays and adds any player data from scoreboard.xml, from previous run - when AddScore(name, level, combo) is called the sort begins - Another method can also be called that populates the XML file with above array data The sort checks to see if the new score (combo) is less than or equal to any recorded scores within the scoreboardComboData array (if it's greater than a score, it moves onto the next element). If so, it moves all scores below the score it is less than or equal to down one element, essentially removing the last score and then places the new score within the element below the score it is less than or equal to. If the score is greater than all recorded scores, it moves all scores down one and inserts the new score within the first element. If it's the only score, it simply adds it to the first element. When a new score is added, the Name and Level data is also added to their relevant arrays, in the same way. What a tongue twister. Below is the AddScore method, I've added comments in the hope that it makes things clearer O_o. You can get the actual source file HERE. Below the method is an example of the quickest way to add a score to follow through with a debugger. public static void AddScore(string name, string level, int combo) { // If the scoreboard has not yet been filled, this adds another 'active' // array element each time a new score is added. The actual array size is // defined within PopulateScoreBoard() (set to 10 - for 'top 10' if (totalScores < scoreboardComboData.Length) totalScores++; // Does the scoreboard even need sorting? if (totalScores > 1) { for (int i = totalScores - 1; i > - 1; i--) { // Check to see if score (combo) is greater than score stored in // array if (combo > scoreboardComboData[i] && i != 0) { // If so continue to next element continue; } // Check to see if score (combo) is less or equal to element 'i' // score && that the element is not the last in the // array, if so the score does not need to be added to the scoreboard else if (combo <= scoreboardComboData[i] && i != scoreboardComboData.Length - 1) { // If the score is lower than element 'i' and greater than the last // element within the array, it needs to be added to the scoreboard. This is achieved // by moving each element under element 'i' down an element. The new score is then inserted // into the array under element 'i' for (int j = totalScores - 1; j > i; j--) { // Name and level data are moved down in their relevant arrays scoreboardTextData[0][j] = scoreboardTextData[0][j - 1]; scoreboardTextData[1][j] = scoreboardTextData[1][j - 1]; // Score (combo) data is moved down in relevant array scoreboardComboData[j] = scoreboardComboData[j - 1]; } // The new Name, level and score (combo) data is inserted into the relevant array under element 'i' scoreboardTextData[0][i + 1] = name; scoreboardTextData[1][i + 1] = level; scoreboardComboData[i + 1] = combo; break; } // If the method gets the this point, it means that the score is greater than all scores within // the array and therefore cannot be added in the above way. As it is not less than any score within // the array. else if (i == 0) { // All Names, levels and scores are moved down within their relevant arrays for (int j = totalScores - 1; j != 0; j--) { scoreboardTextData[0][j] = scoreboardTextData[0][j - 1]; scoreboardTextData[1][j] = scoreboardTextData[1][j - 1]; scoreboardComboData[j] = scoreboardComboData[j - 1]; } // The new number 1 top name, level and score, are added into the first element // within each of their relevant arrays. scoreboardTextData[0][0] = name; scoreboardTextData[1][0] = level; scoreboardComboData[0] = combo; break; } // If the methods get to this point, the combo score is not high enough // to be on the top10 score list and therefore needs to break break; } } // As totalScores < 1, the current score is the first to be added. Therefore no checks need to be made // and the Name, Level and combo data can be entered directly into the first element of their relevant // array. else { scoreboardTextData[0][0] = name; scoreboardTextData[1][0] = level; scoreboardComboData[0] = combo; } } } Example for adding score: private static void Initialize() { scoreboardDoc = new XmlDocument(); if (!File.Exists("Scoreboard.xml")) GenerateXML("Scoreboard.xml"); PopulateScoreBoard("Scoreboard.xml"); // ADD TEST SCORES HERE! AddScore("EXAMPLE", "10", 100); AddScore("EXAMPLE2", "24", 999); PopulateXML("Scoreboard.xml"); } In it's current state the source file is just used for testing, initialize is called within main and PopulateScoreBoard handles the majority of other initialising, so nothing else is needed, except to add a test score. I thank you for your time!

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How to find an entry-level job after you already have a graduate degree?

- by Uri

Note: I asked this question in early 2009. A couple of months later, I found a great job. I've previously updated this question with some tips for whoever ends up in a similar situation, and now cleaned it up a little for the benefit of the fresh batch of graduates. Original post: In my early 20s I abandoned a great C++ development career path in a major company to go to graduate school and get a research masters (3 years). I did another year in industrial research, and then moved to the US to attend graduate school again, getting another masters and a Ph.D in software engineering from a top school (another 6 years down the drain). I was coding the whole way throughout my degrees (core Java and Eclipse plug-ins) and working on research related to software engineering (usability of APIs). I ended up graduating the year of the recession, with a son on the way and the prospects of no healthcare. Academic jobs and industrial research jobs are quite scarce. Initially, I was naive, thinking that with my background, I could easily find a coding job. Big mistake. It turns out that I'm in a complicated position. Entry level positions are usually offered to college undergraduates. I attended my school's career fairs, but you could immediately see signs of Ph.D. aversion and overqualification issues. Some of the recruiters I spoke with explicitly told me that they wanted 20 year olds with clean slates, and some were looking for interns since they are in various forms of hiring freezes. I managed to get a couple of interviews from these career fairs and through recruiters. However, since I've been out of school for a long time and programming primarily in Java, I am also no longer proficient in C/C++ and the usual range of college-level interview questions that everyone uses. I had no problems with this when I was 19 and interviewing for my first job since a lot of what you do in C is manipulate pointers and I was coding C++ for fun and for school. Later I was routinely doing pointer manipulation on the job, and during my first masters taught college courses with data structures and C++. But even though I remember many properties of C++ well, it's been close to ten years since I regularly used C++ and pointers. As a Java developer I rarely had to work at this level, but experience in OOD and in writing good maintainable code is meaningless for C++ interviews. Reading books as a refresh and looking at sample code did not do the trick. I also looked at mid-to-senior level Java positions, but most of them focused on J2EE APIs rather than on core Java and required a certain number of years in industrial positions. Coding research tools and prior C++ experience doesn't count. So that sends me back to entry-level jobs that are posted through job-boards, and these are not common (mostly they are Monster junk), and small companies are even less likely to answer a Ph.D. compared to the giants who participate in top-10 career fairs. Even worse, in many companies initial screening is done by HR folks who really don't want to deal with anything anomalous like a Ph.D. Any tips on how I should approach this intractable position? For example, what should I write in cover letters? Note that while immigration is not an issue for me, I cannot go freelance as I need the benefits (and in particular group health insurance). During my studies I had no time to contribute to open-source projects or maintain a popular blog, so even if I invested in that now there would be no immediate benefit. Updates: In the two months after posting this I received several offers to work as a core Java developer in the financial industry and accepted one from a firm where I am working to this day. For those who find themselves in similar situations, here are my tips: Give up on trying to find an entry level positions. You can't undo time. Accept the fact that there is Ph.D. discrimination in the job market (some might say rightfully so). It is legal to discriminate based on education. No point fighting it. The most important tip is to focus on the language you are comfortable with. The sad truth about programming in a particular language is that it is not like riding a bike. If you haven't used a language in the last few years, and can't actually apply it routinely (not just as a refresher) before you start your search, it is going to be very difficult to do well in an interview. Now that I'm interviewing others, I routinely see it in folks with a mixed C++/Java background. We maintain "a shadow" of the old language but end up with a weird mix that makes it hard to interview on either. Entry-level folks are at an advantage here since they usually have one language. Memory can help you do great in a screening interview, but without recent day-to-day experience, code tests will be difficult. Despite the supposed relation, core Java programming and J2EE programming are two different things with different skillsets. If you come from academia, you likely have very little J2EE experience and may find it hard to get accepted for a J2EE job. J2EE jobs seem to have a larger list of acronyms in their requirements. In addition, from interviewing J2EE developers it seems that for many there is a focus on mastering specific APIs and architectures, whereas core Java development tends to be secondary. In the same way that I can no longer manipulate pointers well, a J2EE developer may have difficulties doing low level Java manipulation. This puts you at a relative advantage in competing for core Java jobs! If you are able to work for startups (in terms of family life and stability) or migrate to startup-rich areas such as the west coast, you can find many exciting opportunities where advanced degrees are a benefit. I've since been approached by several startups, although I had to decline. Work through a recruiter if possible. They have direct contacts with the hiring parties, allowing you to "stand out". It is better to get a clear yes/no confirmation from a recruiter on whether a company might be interested in interviewing you, than it is to send your resume and hope that someone will ever see it. Recruiters are also a great way of bypassing HR. However, also beware of recruiters. They have a vested interest and will go to various shady practices and pressure tactics. To find a good recruiter, talk to a friend who declined a job offer he got through a recruiter. A good recruiter, to me, is measured in how they handle that. Interview for the jobs that require your core strength. If you're rusty or entirely unfamiliar with a technology around which the job revolves, you're probably not a good match. Yes, you probably have the talent to master them, but most companies would want "instant gratification". I got my offers from companies that wanted core Java developer. I didn't do well on places that wanted advance C++ because I am too rusty and not up to date on recent libraries. I also didn't hear from companies that wanted lots of J2EE experience, and that's ok. Finding companies that want core Java without web is harder, but exists in specific industries (e.g., finance, defense). This requires a lot more legwork in terms of search, but these jobs do exist. There are different interview styles. Some companies focus on puzzles, some companies focus on algorithms, and some companies focus on design and coding skills. I had the most success in places where the questions were the most related to the function I would have been performing. Pick companies accordingly as well.

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C++ simple logging class with UTF-8 output [code example]

- by Andrew

Hello everyone, I was working on one of my academic projects and for the first time I needed pure C++ without GUI. After googling for a while, I did not find any simple and easy to use implementation for logging and created my own. This is a simple implementation with iostreams that logs messages to screen and to the file simultaneously. I was thinking of using templates but then I realized that I do not expect any changes and removed that. It is modified std::wostream with two added modifiers: 1. TimeStamp - prints time-stamp 2. LogMode(LogModes) - switches output: file only, screen only, file+screen. *Boost::utf8_codecvt_facet* is used for UTF-8 output. // ############################################################################ // # Name: MyLog.h # // # Purpose: Logging Class Header # // # Author: Andrew Drach # // # Modified by: <somebody> # // # Created: 03/21/10 # // # SVN-ID: $Id$ # // # Copyright: (c) 2010 Andrew Drach # // # Licence: <license> # // ############################################################################ #ifndef INCLUDED_MYLOG_H #define INCLUDED_MYLOG_H // headers -------------------------------------------------------------------- #include <string> #include <iostream> #include <fstream> #include <exception> #include <boost/program_options/detail/utf8_codecvt_facet.hpp> using namespace std; // definitions ---------------------------------------------------------------- // ---------------------------------------------------------------------------- // DblBuf class // Splits up output stream into two // Inspired by http://wordaligned.org/articles/cpp-streambufs // ---------------------------------------------------------------------------- class DblBuf : public wstreambuf { private: // private member declarations DblBuf(); wstreambuf *bf1; wstreambuf *bf2; virtual int_type overflow(int_type ch) { int_type eof = traits_type::eof(); int_type not_eof = !eof; if ( traits_type::eq_int_type(ch,eof) ) return not_eof; else { char_type ch1 = traits_type::to_char_type(ch); int_type r1( bf1on ? bf1->sputc(ch1) : not_eof ); int_type r2( bf2on ? bf2->sputc(ch1) : not_eof ); return (traits_type::eq_int_type(r1,eof) || traits_type::eq_int_type(r2,eof) ) ? eof : ch; } } virtual int sync() { int r1( bf1on ? bf1->pubsync() : NULL ); int r2( bf2on ? bf2->pubsync() : NULL ); return (r1 == 0 && r2 == 0) ? 0 : -1; } public: // public member declarations explicit DblBuf(wstreambuf *bf1, wstreambuf *bf2) : bf1(bf1), bf2(bf2) { if (bf1) bf1on = true; else bf1on = false; if (bf2) bf2on = true; else bf2on = false; } bool bf1on; bool bf2on; }; // ---------------------------------------------------------------------------- // logstream class // Wrapper for a standard wostream with access to modified buffer // ---------------------------------------------------------------------------- class logstream : public wostream { private: // private member declarations logstream(); public: // public member declarations DblBuf *buf; explicit logstream(wstreambuf *StrBuf, bool isStd = false) : wostream(StrBuf, isStd), buf((DblBuf*)StrBuf) {} }; // ---------------------------------------------------------------------------- // Logging mode Class // ---------------------------------------------------------------------------- enum LogModes{LogToFile=1, LogToScreen, LogToBoth}; class LogMode { private: // private member declarations LogMode(); short mode; public: // public member declarations LogMode(short mode1) : mode(mode1) {} logstream& operator()(logstream &stream1) { switch(mode) { case LogToFile: stream1.buf->bf1on = true; stream1.buf->bf2on = false; break; case LogToScreen: stream1.buf->bf1on = false; stream1.buf->bf2on = true; break; case LogToBoth: stream1.buf->bf1on = true; stream1.buf->bf2on = true; } return stream1; } }; logstream& operator<<(logstream &out, LogMode mode) { return mode(out); } wostream& TimeStamp1(wostream &out1) { time_t time1; struct tm timeinfo; wchar_t timestr[512]; // Get current time and convert it to a string time(&time1); localtime_s (&timeinfo, &time1); wcsftime(timestr, 512,L"[%Y-%b-%d %H:%M:%S %p] ",&timeinfo); return out1 << timestr; } // ---------------------------------------------------------------------------- // MyLog class // Logs events to both file and screen // ---------------------------------------------------------------------------- class MyLog { private: // private member declarations MyLog(); auto_ptr<DblBuf> buf; string mErrorMsg1; string mErrorMsg2; string mErrorMsg3; string mErrorMsg4; public: // public member declarations explicit MyLog(string FileName1, wostream *ScrLog1, locale utf8locale1); ~MyLog(); void NewEvent(wstring str1, bool TimeStamp = true); string FileName; wostream *ScrLog; wofstream File; auto_ptr<logstream> Log; locale utf8locale; }; // ---------------------------------------------------------------------------- // MyLog constructor // ---------------------------------------------------------------------------- MyLog::MyLog(string FileName1, wostream *ScrLog1, locale utf8locale1) : // ctors mErrorMsg1("Failed to open file for application logging! []"), mErrorMsg2("Failed to write BOM! []"), mErrorMsg3("Failed to write to file! []"), mErrorMsg4("Failed to close file! []"), FileName(FileName1), ScrLog(ScrLog1), utf8locale(utf8locale1), File(FileName1.c_str()) { // Adjust error strings mErrorMsg1.insert(mErrorMsg1.length()-1,FileName1); mErrorMsg2.insert(mErrorMsg2.length()-1,FileName1); mErrorMsg3.insert(mErrorMsg3.length()-1,FileName1); mErrorMsg4.insert(mErrorMsg4.length()-1,FileName1); // check for file open errors if ( !File ) throw ofstream::failure(mErrorMsg1); // write UTF-8 BOM File << wchar_t(0xEF) << wchar_t(0xBB) << wchar_t(0xBF); // switch locale to UTF-8 File.imbue(utf8locale); // check for write errors if ( File.bad() ) throw ofstream::failure(mErrorMsg2); buf.reset( new DblBuf(File.rdbuf(),ScrLog->rdbuf()) ); Log.reset( new logstream(&*buf) ); } // ---------------------------------------------------------------------------- // MyLog destructor // ---------------------------------------------------------------------------- MyLog::~MyLog() { *Log << TimeStamp1 << "Log finished." << endl; // clean up objects Log.reset(); buf.reset(); File.close(); // check for file close errors if ( File.bad() ) throw ofstream::failure(mErrorMsg4); } //--------------------------------------------------------------------------- #endif // INCLUDED_MYLOG_H Tested on MSVC 2008, boost 1.42. I do not know if this is the right place to share it. Hope it helps anybody. Feel free to make it better.

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C++ 2d Array Class Function Call Help

- by johnny-conrad

I hope this question takes a simple fix, and I am just missing something very small. I am in my second semester of C++ in college, and we are just getting into OOP. This is my first OOP program, and it is causing me a little problem. Here are the errors I am getting: Member function must be called or its address taken in function displayGrid(int,Cell ( *)[20]) Member function must be called or its address taken in function Turn(int,int,Cell ( *)[20]) Member function must be called or its address taken in function Turn(int,int,Cell ( *)[20]) Warning: Parameter 'grid' is never used in function displayGrid(int,Cell ( *)[20]) Here is all of my code. I am aware It is much more code than necessary, sorry if it makes it more difficult. I was worried that I might accidentally delete something. const int MAX=20; //Struct Cell holds player and their symbol. class Cell { private: int Player; char Symbol; public: Cell(void); void setPlayer(int); void setSymbol(char); int getPlayer(void); char getSymbol(void); }; Cell::Cell(void) { Symbol ='-'; } void Cell::setPlayer(int player_num) { Player = player_num; } void Cell::setSymbol(char rps) { Symbol = rps; } int Cell::getPlayer(void) { return Player; } char Cell::getSymbol(void) { return Symbol; } void Turn(int, int, Cell[MAX][MAX]); void displayGrid(int, Cell[MAX][MAX]); void main(void) { int size; cout << "How big would you like the grid to be: "; cin >> size; //Checks to see valid grid size while(size>MAX || size<3) { cout << "Grid size must between 20 and 3." << endl; cout << "Please re-enter the grid size: "; cin >> size; } int cnt=1; int full; Cell grid[MAX][MAX]; //I use full to detect when the game is over by squaring size. full = size*size; cout << "Starting a new game." << endl; //Exits loop when cnt reaches full. while(cnt<full+1) { displayGrid(size, grid); //calls function to display grid if(cnt%2==0) //if cnt is even then it's 2nd players turn cout << "Player 2's turn." << endl; else cout << "Player 1's turn" << endl; Turn(size, cnt, grid); //calls Turn do each players turn cnt++; } cout << endl; cout << "Board is full... Game Over" << endl; } void displayGrid(int size, Cell grid[MAX][MAX]) { cout << endl; cout << " "; for(int x=1; x<size+1; x++) // prints first row cout << setw(3) << x; // of numbers. cout << endl; //Nested-For prints the grid. for(int i=1; i<size+1; i++) { cout << setw(2) << i; for(int c=1; c<size+1; c++) { cout << setw(3) << grid[i][c].getSymbol; } cout << endl; } cout << endl; } void Turn(int size, int cnt, Cell grid[MAX][MAX]) { char temp; char choice; int row=0; int column=0; cout << "Enter the Row: "; cin >> row; cout << "Enter the Column: "; cin >> column; //puts what is in the current cell in "temp" temp = grid[row][column].getSymbol; //Checks to see if temp is occupied or not while(temp!='-') { cout << "Cell space is Occupied..." << endl; cout << "Enter the Row: "; cin >> row; cout << "Enter the Column: "; cin >> column; temp = grid[row][column].getSymbol; //exits loop when finally correct } if(cnt%2==0) //if cnt is even then its player 2's turn { cout << "Enter your Symbol R, P, or S (Capitals): "; cin >> choice; grid[row][column].setPlayer(1); in >> choice; } //officially sets choice to grid cell grid[row][column].setSymbol(choice); } else //if cnt is odd then its player 1's turn { cout << "Enter your Symbol r, p, or s (Lower-Case): "; cin >> choice; grid[row][column].setPlayer(2); //checks for valid input by user1 while(choice!= 'r' && choice!='p' && choice!='s') { cout << "Invalid Symbol... Please Re-Enter: "; cin >> choice; } //officially sets choice to grid cell. grid[row][column].setSymbol(choice); } cout << endl; } Thanks alot for your help!

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Can anyone explain why my crypto++ decrypted file 16 bytes short?

- by Tom Williams

I suspect it might be too much to hope for, but can anyone with experience with crypto++ explain why the "decrypted.out" file created by main() is 16 characters short (which probably not coincidentally is the block size)? I think the issue must be in CryptStreamBuffer::GetNextChar(), but I've been staring at it and the crypto++ documentation for hours. Any other comments about how crummy or naive my std::streambuf implementation are also welcome ;-) And I've just noticed I'm missing some calls to delete so you don't have to tell me about those. Thanks, Tom // Runtime Includes #include <iostream> // Crypto++ Includes #include "aes.h" #include "modes.h" // xxx_Mode< > #include "filters.h" // StringSource and // StreamTransformation #include "files.h" using namespace std; class CryptStreamBuffer: public std::streambuf { public: CryptStreamBuffer(istream& encryptedInput, CryptoPP::StreamTransformation& c); CryptStreamBuffer(ostream& encryptedOutput, CryptoPP::StreamTransformation& c); protected: virtual int_type overflow(int_type ch = traits_type::eof()); virtual int_type uflow(); virtual int_type underflow(); virtual int_type pbackfail(int_type ch); virtual int sync(); private: int GetNextChar(); int m_NextChar; // Buffered character CryptoPP::StreamTransformationFilter* m_StreamTransformationFilter; CryptoPP::FileSource* m_Source; CryptoPP::FileSink* m_Sink; }; // class CryptStreamBuffer CryptStreamBuffer::CryptStreamBuffer(istream& encryptedInput, CryptoPP::StreamTransformation& c) : m_NextChar(traits_type::eof()), m_StreamTransformationFilter(0), m_Source(0), m_Sink(0) { m_StreamTransformationFilter = new CryptoPP::StreamTransformationFilter(c); m_Source = new CryptoPP::FileSource(encryptedInput, false, m_StreamTransformationFilter); } CryptStreamBuffer::CryptStreamBuffer(ostream& encryptedOutput, CryptoPP::StreamTransformation& c) : m_NextChar(traits_type::eof()), m_StreamTransformationFilter(0), m_Source(0), m_Sink(0) { m_Sink = new CryptoPP::FileSink(encryptedOutput); m_StreamTransformationFilter = new CryptoPP::StreamTransformationFilter(c, m_Sink); } CryptStreamBuffer::int_type CryptStreamBuffer::overflow(int_type ch) { return m_StreamTransformationFilter->Put((byte)ch); } CryptStreamBuffer::int_type CryptStreamBuffer::uflow() { int_type result = GetNextChar(); // Reset the buffered character m_NextChar = traits_type::eof(); return result; } CryptStreamBuffer::int_type CryptStreamBuffer::underflow() { return GetNextChar(); } CryptStreamBuffer::int_type CryptStreamBuffer::pbackfail(int_type ch) { return traits_type::eof(); } int CryptStreamBuffer::sync() { if (m_Sink) { m_StreamTransformationFilter->MessageEnd(); } } int CryptStreamBuffer::GetNextChar() { // If we have a buffered character do nothing if (m_NextChar != traits_type::eof()) { return m_NextChar; } // If there are no more bytes currently available then pump the source // *** I SUSPECT THE PROBLEM IS HERE *** if (m_StreamTransformationFilter->MaxRetrievable() == 0) { m_Source->Pump(1024); } // Retrieve the next byte byte nextByte; size_t noBytes = m_StreamTransformationFilter->Get(nextByte); if (0 == noBytes) { return traits_type::eof(); } // Buffer up the next character m_NextChar = nextByte; return m_NextChar; } void InitKey(byte key[]) { key[0] = -62; key[1] = 102; key[2] = 78; key[3] = 75; key[4] = -96; key[5] = 125; key[6] = 66; key[7] = 125; key[8] = -95; key[9] = -66; key[10] = 114; key[11] = 22; key[12] = 48; key[13] = 111; key[14] = -51; key[15] = 112; } void DecryptFile(const char* sourceFileName, const char* destFileName) { ifstream ifs(sourceFileName, ios::in | ios::binary); ofstream ofs(destFileName, ios::out | ios::binary); byte key[CryptoPP::AES::DEFAULT_KEYLENGTH]; InitKey(key); CryptoPP::ECB_Mode<CryptoPP::AES>::Decryption decryptor(key, sizeof(key)); if (ifs) { if (ofs) { CryptStreamBuffer cryptBuf(ifs, decryptor); std::istream decrypt(&cryptBuf); int c; while (EOF != (c = decrypt.get())) { ofs << (char)c; } ofs.flush(); } else { std::cerr << "Failed to open file '" << destFileName << "'." << endl; } } else { std::cerr << "Failed to open file '" << sourceFileName << "'." << endl; } } void EncryptFile(const char* sourceFileName, const char* destFileName) { ifstream ifs(sourceFileName, ios::in | ios::binary); ofstream ofs(destFileName, ios::out | ios::binary); byte key[CryptoPP::AES::DEFAULT_KEYLENGTH]; InitKey(key); CryptoPP::ECB_Mode<CryptoPP::AES>::Encryption encryptor(key, sizeof(key)); if (ifs) { if (ofs) { CryptStreamBuffer cryptBuf(ofs, encryptor); std::ostream encrypt(&cryptBuf); int c; while (EOF != (c = ifs.get())) { encrypt << (char)c; } encrypt.flush(); } else { std::cerr << "Failed to open file '" << destFileName << "'." << endl; } } else { std::cerr << "Failed to open file '" << sourceFileName << "'." << endl; } } int main(int argc, char* argv[]) { EncryptFile(argv[1], "encrypted.out"); DecryptFile("encrypted.out", "decrypted.out"); return 0; }

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How to insert sub root node in xml file

- by pravakar

Hi guys hope all are doing good. I want to create one sub root node in my xml file like, <CapitalJobsList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <JobAds> -- element to create <JobAd> <AdvertiserDetails> <AdvertiserId>718508549</AdvertiserId> <AdvertiserName>ABC</AdvertiserName> </AdvertiserDetails> <ConsultantDetails> <ContactName>Naga Divakar</ContactName> <ContactPhone>6239 7755</ContactPhone> <ContactEmail>[email protected]</ContactEmail> <ContactFax>12345678912</ContactFax> </ConsultantDetails> <JobAdDetails> <DateEntered>2009-10-03T21:09:35.500</DateEntered> <AdvertiserJobRef>83754865</AdvertiserJobRef> <Title>IT Operations Manager</Title> <DescriptionShort>Large scale/exciting projects Mentor and manage o...</DescriptionShort> <Description>Large scale/exciting projects Mentor and manage others Management/technical mix This is a fantastic opportunity to join a high profile client who is active across both the commercial and Government domain. As the IT Operations Manager you will be responsible for leading and mentoring a small team of Infrastructure Engineers to ensure the availability and performance of the IT infrastructure. You w</Description> <SalaryMin>0.00</SalaryMin> <SalaryMax>0.00</SalaryMax> <WorkType xsi:nil="true" /> <Location>) as [JobAd/JobAdDetails/Bullets], isnull(Job</Location> <PostCode>2600</PostCode> <ClosingDate>2009-11-01T00:00:00</ClosingDate> <Keywords xsi:nil="true" /> <ApplyEmail xsi:nil="true" /> <ApplyURL>http://jobview.careerone.com.au/GetJob.aspx?JobID=83754865</ApplyURL> </JobAdDetails> <JobAdOptions> <BlindPost xsi:nil="true" /> <AdFormatType xsi:nil="true" /> <AdTemplateName xsi:nil="true" /> <ShowContactDetails xsi:nil="true" /> <ShowSalary xsi:nil="true" /> <HasVideo xsi:nil="true" /> <ResumeRequired>1</ResumeRequired> <ResidentsOnly>0</ResidentsOnly> </JobAdOptions> <CategoryList> <Category xsi:nil="true" /> </CategoryList> <RegionsList> <Region>ACT</Region> </RegionsList> <LevelsList> <Level xsi:nil="true" /> </LevelsList> </JobAd> <JobAd> <AdvertiserDetails> <AdvertiserId>718508549</AdvertiserId> <AdvertiserName>ABC</AdvertiserName> </AdvertiserDetails> <ConsultantDetails> <ContactName>Naga Divakar</ContactName> <ContactPhone>6239 7755</ContactPhone> <ContactEmail>[email protected]</ContactEmail> <ContactFax>12345678912</ContactFax> </ConsultantDetails> <JobAdDetails> <DateEntered>2009-10-03T21:09:35.530</DateEntered> <AdvertiserJobRef>83731488</AdvertiserJobRef> <Title>SAP Developers Required in Canberra - 12 month contract</Title> <DescriptionShort>My client, a large government department in Canbe...</DescriptionShort> <Description>My client, a large government department in Canberra, seeks two SAP Developers for 12 month ongoing contracts. Two SAP Developers Required Expert level ABAP programming skills Large SAP landscape - SAP R/3, SAP Web, SAP BI, SAP ITS My client, a large government department in Canberra, seeks two SAP Developers for 12 month ongoing contracts. My client is a large government department in Canberra, a</Description> <SalaryMin>0.00</SalaryMin> <SalaryMax>0.00</SalaryMax> <WorkType xsi:nil="true" /> <Location>) as [JobAd/JobAdDetails/Bullets], isnull(Job</Location> <PostCode>2600</PostCode> <ClosingDate>2009-11-01T00:00:00</ClosingDate> <Keywords xsi:nil="true" /> <ApplyEmail xsi:nil="true" /> <ApplyURL>http://jobview.careerone.com.au/GetJob.aspx?JobID=83731488</ApplyURL> </JobAdDetails> <JobAdOptions> <BlindPost xsi:nil="true" /> <AdFormatType xsi:nil="true" /> <AdTemplateName xsi:nil="true" /> <ShowContactDetails xsi:nil="true" /> <ShowSalary xsi:nil="true" /> <HasVideo xsi:nil="true" /> <ResumeRequired>1</ResumeRequired> <ResidentsOnly>0</ResidentsOnly> </JobAdOptions> <CategoryList> <Category xsi:nil="true" /> </CategoryList> <RegionsList> <Region>ACT</Region> </RegionsList> <LevelsList> <Level xsi:nil="true" /> </LevelsList> </JobAd> </JobAds> </CapitalJobsList> I have used the sql query for xml path like: select r.advid as [JobAd/AdvertiserDetails/AdvertiserId], CompanyName as [JobAd/AdvertiserDetails/AdvertiserName], firstname +'' ''+ lastname as [JobAd/ConsultantDetails/ContactName], WorkPhone as [JobAd/ConsultantDetails/ContactPhone], AdvEmail as [JobAd/ConsultantDetails/ContactEmail], FaxNo as [JobAd/ConsultantDetails/ContactFax], Job_CreatedDate as [JobAd/JobAdDetails/DateEntered], Job_Id as [JobAd/JobAdDetails/AdvertiserJobRef], Job_Title as [JobAd/JobAdDetails/Title], substring(Job_Description,0,50)+''...'' as [JobAd/JobAdDetails/DescriptionShort], Job_Description as [JobAd/JobAdDetails/Description], CONVERT(DECIMAL(10,2),MinSalary) as [JobAd/JobAdDetails/SalaryMin], CONVERT(DECIMAL(10,2),MaxSalary) as [JobAd/JobAdDetails/SalaryMax], Job_Type as [JobAd/JobAdDetails/WorkType], isnull(Job_Bullets,'') as [JobAd/JobAdDetails/Bullets], isnull(Job_Location,'') as [JobAd/JobAdDetails/Location], Job_PostCode as [JobAd/JobAdDetails/PostCode], Job_ExpireDate as [JobAd/JobAdDetails/ClosingDate], Job_Keywords as [JobAd/JobAdDetails/Keywords], ApplyEmail as [JobAd/JobAdDetails/ApplyEmail], Job_BrandURL+Job_Id as [JobAd/JobAdDetails/ApplyURL], BlindPost as [JobAd/JobAdOptions/BlindPost], AdFormatType as [JobAd/JobAdOptions/AdFormatType], AdTemplateName as [JobAd/JobAdOptions/AdTemplateName], ShowContactDetails as [JobAd/JobAdOptions/ShowContactDetails], ShowSalary as [JobAd/JobAdOptions/ShowSalary], HasVideo as [JobAd/JobAdOptions/HasVideo], ResumeRequired as [JobAd/JobAdOptions/ResumeRequired], ResidentsOnly as [JobAd/JobAdOptions/ResidentsOnly], Job_Category as [JobAd/CategoryList/Category], Job_Location_State as [JobAd/RegionsList/Region], [Level] as [JobAd/LevelsList/Level] from DR_Adv_Registration r, DR_CareerOne_ACTJobs j where r.Advid = j.Advid and job_location_city like(''%'+''+ @City +''+'%'') and job_location_state in('''+ @State +''') and job_status=1 for xml path(''''), Root(''CapitalJobsList''),ELEMENTS XSINIL So, suggest me how to get the sub root node. Thanks in advance

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PHP - My array returns NULL values when placed in a function, but works fine outside of the function

- by orbit82

Okay, let me see if I can explain this. I am making a newspaper WordPress theme. The theme pulls posts from categories. The front page shows multiple categories, organized as "newsboxes". Each post should show up only ONCE on the front page, even if said post is in two or more categories. To prevent posts from duplicating on the front page, I've created an array that keeps track of the individual post IDs. When a post FIRST shows up on the front page, its ID gets added to the array. Before looping through the posts for each category, the code first checks the array to see which posts have ALREADY been displayed. OK, so now remember how I said earlier that the front page shows multiple categories organized as "newsboxes"? Well, these newsboxes are called onto the front page using PHP includes. I have 6 newsboxes appearing on the front page, and the code to call them is EXACTLY the same. I didn't want to repeat the same code 6 times, so I put all of the inclusion code into a function. The function works, but the only problem is that it screws up the duplicate posts code I mentioned earlier. The posts all repeat. Running a var_dump on the $do_not_duplicate variable returns an array with null indices. Everything works PERFECTLY if I don't put the code inside a function, but once I do put them in a function it's like the arrays aren't even connecting with the posts. Here is the code with the arrays. The key variables in question here include $do_not_duplicate[] = $post-ID, $do_not_duplicate and 'post__not_in' = $do_not_duplicate <?php query_posts('cat='.$settings['cpress_top_story_category'].'&posts_per_page='.$settings['cpress_number_of_top_stories'].'');?> <?php if (have_posts()) : ?>  <div id="topStory"> <?php while ( have_posts() ) : the_post(); $do_not_duplicate[] = $post->ID; ?> <a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_post_thumbnail('top-story-thumbnail'); ?></a> <h2 class="extraLargeHeadline"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2> <div class="topStory_author"><?php cpress_show_post_author_byline(); ?></div> <div <?php post_class('topStory_entry') ?> id="post-<?php the_ID(); ?>"> <?php if($settings['cpress_excerpt_or_content_top_story_newsbox'] == "content") { the_content(); ?><a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>"><span class="read_more"><?php echo $settings['cpress_more_text']; ?></span></a> <?php } else { the_excerpt(); ?><a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>"><span class="read_more"><?php echo $settings['cpress_more_text']; ?></span></a> <?php }?> </div> <div class="topStory_meta"><?php cpress_show_post_meta(); ?></div> <?php endwhile; wp_reset_query(); ?> <?php if(!$settings['cpress_hide_top_story_more_stories']) { ?> <div id="moreTopStories"> <?php $category_link = get_category_link(''.$settings['cpress_top_story_category'].''); ?> <?php if (have_posts()) : ?> <?php query_posts( array( 'cat' => ''.$settings['cpress_top_story_category'].'', 'posts_per_page' => ''.$settings['cpress_number_of_more_top_stories'].'', 'post__not_in' => $do_not_duplicate ) ); ?> <h4 class="moreStories"> <?php if($settings['cpress_make_top_story_more_stories_link']) { ?> <a href="<?php echo $category_link; ?>" title="<?php echo strip_tags($settings['cpress_top_story_more_stories_text']);?>"><?php echo strip_tags($settings['cpress_top_story_more_stories_text']);?></a><?php } else { echo strip_tags($settings['cpress_top_story_more_stories_text']); } ?> </h4> <ul> <?php while( have_posts() ) : the_post(); $do_not_duplicate[] = $post->ID; ?> <li><h2 class="mediumHeadline"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2> <?php if(!$settings['cpress_hide_more_top_stories_excerpt']) { ?> <div <?php post_class('moreTopStory_postExcerpt') ?> id="post-<?php the_ID(); ?>"><?php if($settings['cpress_excerpt_or_content_top_story_newsbox'] == "content") { the_content(); ?><a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>"><span class="read_more"><?php echo $settings['cpress_more_text']; ?></span></a> <?php } else { the_excerpt(); ?> <a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>"><span class="read_more"><?php echo $settings['cpress_more_text']; ?></span></a> <?php }?> </div><?php } ?> <div class="moreTopStory_postMeta"><?php cpress_show_post_meta(); ?></div> </li> <?php endwhile; wp_reset_query(); ?> </ul> <?php endif;?> </div> <?php } ?> <?php echo(var_dump($do_not_duplicate)); ?> </div> <?php endif; ?> And here is the code that includes the newsboxes onto the front page. This is the code I'm trying to put into a function to avoid duplicating it 6 times on one page. function cpress_show_templatebitsf($tbit_num, $tbit_option) { global $tbit_path; global $shortname; $settings = get_option($shortname.'_options'); //display the templatebits (usually these will be sidebars) for ($i=1; $i<=$tbit_num; $i++) { $tbit = strip_tags($settings[$tbit_option .$i]); if($tbit !="") { include_once(TEMPLATEPATH . $tbit_path. $tbit.'.php'); } //if }//for loop unset($tbit_option); } I hope this makes sense. It's kind of a complex thing to explain but I've tried many things to fix it and have had no luck. I'm stumped. I'm hoping it's just some little thing I'm overlooking because it seems like it shouldn't be such a problem.

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need prefuse graph edges like arrows

- by merve

Hello, I did my homework and searched both google for a sample and a topic that is answered before on stackoverflow. But nothing has been found. My problem is ordinary edges who does not have a view like arrows. Here is what i do to hope there is forward arrows from target to destination: LabelRenderer nameLabel = new LabelRenderer("name"); nameLabel.setRoundedCorner(8, 8); DefaultRendererFactory rendererFactory = new DefaultRendererFactory(nameLabel); EdgeRenderer edgeRenderer; edgeRenderer = new EdgeRenderer(prefuse.Constants.EDGE_TYPE_LINE, prefuse.Constants.EDGE_ARROW_FORWARD); rendererFactory.setDefaultEdgeRenderer(edgeRenderer); vis.setRendererFactory(rendererFactory); Here is what i see about colour of edges, hoping these must not be transparent: int[] palette = new int[]{ColorLib.rgb(255, 180, 180), ColorLib.rgb(190, 190, 255)}; DataColorAction fill = new DataColorAction("socialnet.nodes", "gender", Constants.NOMINAL, VisualItem.FILLCOLOR, palette); ColorAction text = new ColorAction("socialnet.nodes", VisualItem.TEXTCOLOR, ColorLib.gray(0)); ColorAction edges = new ColorAction("socialnet.edges", VisualItem.STROKECOLOR, ColorLib.gray(200)); ColorAction arrow = new ColorAction("socialnet.edges", VisualItem.FILLCOLOR, ColorLib.gray(200)); ActionList colour = new ActionList(); colour.add(fill); colour.add(text); colour.add(edges); colour.add(arrow); vis.putAction("colour", colour); Thus, i wonder where am i wrong? Why my edges do not seem like arrows? Thanks for any idea. For more detail, i want to paste all of the code: /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package prefusedeneme; import javax.swing.JFrame; import prefuse.data.*; import prefuse.data.io.*; import prefuse.Display; import prefuse.Visualization; import prefuse.render.*; import prefuse.util.*; import prefuse.action.assignment.*; import prefuse.Constants; import prefuse.visual.*; import prefuse.action.*; import prefuse.activity.*; import prefuse.action.layout.graph.*; import prefuse.controls.*; import prefuse.data.expression.Predicate; import prefuse.data.expression.parser.ExpressionParser; public class SocialNetworkVis { public static void main(String argv[]) { // 1. Load the data Graph graph = null; /* graph will contain the core data */ try { graph = new GraphMLReader().readGraph("socialnet.xml"); /* load the data from an XML file */ } catch (DataIOException e) { e.printStackTrace(); System.err.println("Error loading graph. Exiting..."); System.exit(1); } // 2. prepare the visualization Visualization vis = new Visualization(); /* vis is the main object that will run the visualization */ vis.add("socialnet", graph); /* add our data to the visualization */ // 3. setup the renderers and the render factory // labels for name LabelRenderer nameLabel = new LabelRenderer("name"); nameLabel.setRoundedCorner(8, 8); /* nameLabel decribes how to draw the data elements labeled as "name" */ // create the render factory DefaultRendererFactory rendererFactory = new DefaultRendererFactory(nameLabel); EdgeRenderer edgeRenderer; edgeRenderer = new EdgeRenderer(prefuse.Constants.EDGE_TYPE_LINE, prefuse.Constants.EDGE_ARROW_FORWARD); rendererFactory.setDefaultEdgeRenderer(edgeRenderer); vis.setRendererFactory(rendererFactory); // 4. process the actions // colour palette for nominal data type int[] palette = new int[]{ColorLib.rgb(255, 180, 180), ColorLib.rgb(190, 190, 255)}; /* ColorLib.rgb converts the colour values to integers */ // map data to colours in the palette DataColorAction fill = new DataColorAction("socialnet.nodes", "gender", Constants.NOMINAL, VisualItem.FILLCOLOR, palette); /* fill describes what colour to draw the graph based on a portion of the data */ // node text ColorAction text = new ColorAction("socialnet.nodes", VisualItem.TEXTCOLOR, ColorLib.gray(0)); /* text describes what colour to draw the text */ // edge ColorAction edges = new ColorAction("socialnet.edges", VisualItem.STROKECOLOR, ColorLib.gray(200)); ColorAction arrow = new ColorAction("socialnet.edges", VisualItem.FILLCOLOR, ColorLib.gray(200)); /* edge describes what colour to draw the edges */ // combine the colour assignments into an action list ActionList colour = new ActionList(); colour.add(fill); colour.add(text); colour.add(edges); colour.add(arrow); vis.putAction("colour", colour); /* add the colour actions to the visualization */ // create a separate action list for the layout ActionList layout = new ActionList(Activity.INFINITY); layout.add(new ForceDirectedLayout("socialnet")); /* use a force-directed graph layout with default parameters */ layout.add(new RepaintAction()); /* repaint after each movement of the graph nodes */ vis.putAction("layout", layout); /* add the laout actions to the visualization */ // 5. add interactive controls for visualization Display display = new Display(vis); display.setSize(700, 700); display.pan(350, 350); // pan to the middle display.addControlListener(new DragControl()); /* allow items to be dragged around */ display.addControlListener(new PanControl()); /* allow the display to be panned (moved left/right, up/down) (left-drag)*/ display.addControlListener(new ZoomControl()); /* allow the display to be zoomed (right-drag) */ // 6. launch the visualizer in a JFrame JFrame frame = new JFrame("prefuse tutorial: socialnet"); /* frame is the main window */ frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(display); /* add the display (which holds the visualization) to the window */ frame.pack(); frame.setVisible(true); /* start the visualization working */ vis.run("colour"); vis.run("layout"); } }

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another onmouseover problem this one concerns pictures

- by user334118

Hi all! have problems with mouseover in Mozilla and Chrome after making it work in IE, for sure I can tell you that my code woked perfectly in Chrome at least, cause thats my default browser and I used it for debuging when creating the javascipt and it worked nicely... until I tried to make it work in IE too. Here I post the full code of the webpage I'm having trouble with. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebbShop.aspx.cs" Inherits="FSwebportal.WebbShop" %> .prodShow{width: 100%; text-align:center;border:0; float:right; position:inherit; padding-left:310px;} prodFollow{display:block; width:100%; height:100%; position:fixed; overflow:hidden;} orderSett{display:block; position:relative; float:left; padding-top:inherit;} .ShowBig{width:290px;height:290px; padding-top:10px;} .pTb{width:50px;} .order{background-color:Transparent;margin:3px;} .txtArea{border:0;overflow:auto;width:200px;height:100px;} .prodRow{background-image:url("produktbakgrund.png"); background-repeat:repeat;} .row{background-color:Transparent;width:100%;margin: 0px auto;display:inline-table;} .col{background-color:Transparent;width:100%;margin:3px;} <div id="prodFollow"> <table id="dumbTable"> <tr> <td> <img id="sideImg" class="ShowBig" src="" alt=""/> </td> </tr> <tr> <td> <h3><b>Specifikationer:</b></h3> <select name=""> </select> </td> </tr> </table> </div> <table id="itemList" class="prodShow" cellspacing="0"> <thead> <tr class="prodRow"> <th>Bild</th> <th>Förklaring</th> <th>Artikelnummer</th> <th>Pris</th> </tr> </thead> </table> <script type="text/javascript"> function appendRow() { var tbl = document.getElementById('itemList'); var len = <%= aspInfo.Count %>; var arr = new Array(len); var currIndex = 0; var imgID=0; <% for (int x = 0; x < aspInfo.Count; x++) { Response.Write("arr["+x+"]= '"+ aspInfo[x]+"';"); } %> for(row =0; row < arr.length/4;row++) { var rad = tbl.insertRow(tbl.rows.length); rad.setAttribute('class','prodRow'); for (c = 0; c < tbl.rows[row].cells.length; c++) { if(c < 1) { createCell(rad.insertCell(c), arr[currIndex], 'col',imgID); imgID++; } else { if(c < 3) { createCell(rad.insertCell(c),"<Label class=txtArea>" + arr[currIndex] + "</Label>", 'row',imgID); } else { createCell(rad.insertCell(c),"<Label class=txtArea>" + arr[currIndex] + " SKR</Label><br>Antal:<input type=text class=pTb /><input type=button width=100px value='Lägg i varukorg'></input>", 'order',imgID); } } currIndex++; } } } function createCell(cell, text, style,imgID) { if (style == 'col') { var arrLen = <% = largeImg.Count %>; var imgArr = new Array(arrLen); <% for (int x = 0; x < largeImg.Count; x++) { Response.Write("imgArr["+x+"]= '"+ largeImg[x]+"';"); } %> var div = document.createElement('div'); div.setAttribute('class', style); div.setAttribute('className', style); div.innerHTML = "<a href='#'><img id='" + imgID + "' src='" + text + "' onmouseover=javascript:onImg('" + imgArr[imgID] + "') border='0' alt='Animg' /></a>"; cell.appendChild(div); } else { var div = document.createElement('div'); div.setAttribute('class', style); div.setAttribute('className', style); div.innerHTML = text; cell.appendChild(div); } } </script> <script type="text/javascript" language="javascript"> function onImg(bigImg) { var img = document.getElementById('sideImg#'); img.src = bigImg; alert(img.src.toString()); } </script> </form> hope you guys can solve it for me, going mad! best regards David

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Building an ASP.Net 4.5 Web forms application - part 4

- by nikolaosk

?his is the fourth post in a series of posts on how to design and implement an ASP.Net 4.5 Web Forms store that sells posters on line.There are 3 more posts in this series of posts.Please make sure you read them first.You can find the first post here. You can find the second post here. You can find the third post here. In this new post we will build on the previous posts and we will demonstrate how to display the posters per category.We will add a ListView control on the PosterList.aspx and will bind data from the database. We will use the various templates.Then we will write code in the PosterList.aspx.cs to fetch data from the database.1) Launch Visual Studio and open your solution where your project lives2) Open the PosterList.aspx page. We will add some markup in this page. Have a look at the code below <section class="posters-featured"> <ul> <asp:ListView ID="posterList" runat="server" DataKeyNames="PosterID" GroupItemCount="3" ItemType="PostersOnLine.DAL.Poster" SelectMethod="GetPosters"> <EmptyDataTemplate> <table id="Table1" runat="server"> <tr> <td>We have no data.</td> </tr> </table> </EmptyDataTemplate> <EmptyItemTemplate> <td id="Td1" runat="server" /> </EmptyItemTemplate> <GroupTemplate> <tr ID="itemPlaceholderContainer" runat="server"> <td ID="itemPlaceholder" runat="server"></td> </tr> </GroupTemplate> <ItemTemplate> <td id="Td2" runat="server"> <table> <tr> <td> </td> <td> <a href="PosterDetails.aspx?posterID=<%#:Item.PosterID%>"> <img src="<%#:Item.PosterImgpath%>" width="100" height="75" border="1"/></a> </td> <td> <a href="PosterDetails.aspx?posterID=<%#:Item.PosterID%>"> <span class="PosterName"> <%#:Item.PosterName%> </span> </a> <br /> <span class="PosterPrice"> <b>Price: </b><%#:String.Format("{0:c}", Item.PosterPrice)%> </span> <br /> </td> </tr> </table> </td> </ItemTemplate> <LayoutTemplate> <table id="Table2" runat="server"> <tr id="Tr1" runat="server"> <td id="Td3" runat="server"> <table ID="groupPlaceholderContainer" runat="server"> <tr ID="groupPlaceholder" runat="server"></tr> </table> </td> </tr> <tr id="Tr2" runat="server"><td id="Td4" runat="server"></td></tr> </table> </LayoutTemplate> </asp:ListView> </ul> </section> 3) We have a ListView control on the page called PosterList. I set the ItemType property to the Poster class and then the SelectMethod to the GetPosters method. I will create this method later on. (ItemType="PostersOnLine.DAL.Poster" SelectMethod="GetPosters")Then in the code below I have the data-binding expression Item available and the control becomes strongly typed.So when the user clicks on the link of the poster's category the relevant information will be displayed (photo,name and price) <td> <a href="PosterDetails.aspx?posterID=<%#:Item.PosterID%>"> <img src="<%#:Item.PosterImgpath%>" width="100" height="75" border="1"/></a> </td>4) Now we need to write the simple method to populate the ListView control.It is called GetPosters method.The code follows public IQueryable<Poster> GetPosters([QueryString("id")] int? PosterCatID) { PosterContext ctx = new PosterContext(); IQueryable<Poster> query = ctx.Posters; if (PosterCatID.HasValue && PosterCatID > 0) { query = query.Where(p=>p.PosterCategoryID==PosterCatID); } return query; } This is a very simple method that returns information about posters related to the PosterCatID passed to it.I bind the value from the query string to the PosterCatID parameter at run time.This is all possible due to the QueryStringAttribute class that lives inside the System.Web.ModelBinding and gets the value of the query string variable id.5) I run my application and then click on the "Midfilders" link. Have a look at the picture below to see the results. In the Site.css file I added some new CSS rules to make everything more presentable. .posters-featured { width:840px; background-color:#efefef;}.posters-featured a:link, a:visited, a:active, a:hover { color: #000033; }.posters-featured a:hover { background-color: #85c465; } 6) I run the application again and this time I do not choose any category, I simply navigate to the PosterList.aspx page. I see all the posters since no query string was passed as a parameter.Have a look at the picture below ?ake sure you place breakpoints in the code so you can see what is really going on.In the next post I will show you how to display poster details.Hope it helps!!!

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Is it possible to pass a structure of delegates from managed to native?

- by Veiva

I am writing a wrapper for the game programming library "Allegro" and its less stable 4.9 branch. Now, I have done good insofar, except for when it comes to wrapping a structure of function pointers. Basically, I can't change the original code, despite having access to it, because that would require me to fork it in some manner. I need to know how I can somehow pass a structure of delegates from managed to native without causing an AccessViolationException that has occurred so far. Now, for the code. Here is the Allegro definition of the structure: typedef struct ALLEGRO_FILE_INTERFACE { AL_METHOD(ALLEGRO_FILE*, fi_fopen, (const char *path, const char *mode)); AL_METHOD(void, fi_fclose, (ALLEGRO_FILE *handle)); AL_METHOD(size_t, fi_fread, (ALLEGRO_FILE *f, void *ptr, size_t size)); AL_METHOD(size_t, fi_fwrite, (ALLEGRO_FILE *f, const void *ptr, size_t size)); AL_METHOD(bool, fi_fflush, (ALLEGRO_FILE *f)); AL_METHOD(int64_t, fi_ftell, (ALLEGRO_FILE *f)); AL_METHOD(bool, fi_fseek, (ALLEGRO_FILE *f, int64_t offset, int whence)); AL_METHOD(bool, fi_feof, (ALLEGRO_FILE *f)); AL_METHOD(bool, fi_ferror, (ALLEGRO_FILE *f)); AL_METHOD(int, fi_fungetc, (ALLEGRO_FILE *f, int c)); AL_METHOD(off_t, fi_fsize, (ALLEGRO_FILE *f)); } ALLEGRO_FILE_INTERFACE; My simple attempt at wrapping it: public delegate IntPtr AllegroInternalOpenFileDelegate(string path, string mode); public delegate void AllegroInternalCloseFileDelegate(IntPtr file); public delegate int AllegroInternalReadFileDelegate(IntPtr file, IntPtr data, int size); public delegate int AllegroInternalWriteFileDelegate(IntPtr file, IntPtr data, int size); public delegate bool AllegroInternalFlushFileDelegate(IntPtr file); public delegate long AllegroInternalTellFileDelegate(IntPtr file); public delegate bool AllegroInternalSeekFileDelegate(IntPtr file, long offset, int where); public delegate bool AllegroInternalIsEndOfFileDelegate(IntPtr file); public delegate bool AllegroInternalIsErrorFileDelegate(IntPtr file); public delegate int AllegroInternalUngetCharFileDelegate(IntPtr file, int c); public delegate long AllegroInternalFileSizeDelegate(IntPtr file); [StructLayout(LayoutKind.Sequential, Pack = 0)] public struct AllegroInternalFileInterface { [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalOpenFileDelegate fi_fopen; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalCloseFileDelegate fi_fclose; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalReadFileDelegate fi_fread; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalWriteFileDelegate fi_fwrite; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalFlushFileDelegate fi_fflush; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalTellFileDelegate fi_ftell; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalSeekFileDelegate fi_fseek; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalIsEndOfFileDelegate fi_feof; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalIsErrorFileDelegate fi_ferror; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalUngetCharFileDelegate fi_fungetc; [MarshalAs(UnmanagedType.FunctionPtr)] public AllegroInternalFileSizeDelegate fi_fsize; } I have a simple auxiliary wrapper that turns an ALLEGRO_FILE_INTERFACE into an ALLEGRO_FILE, like so: #define ALLEGRO_NO_MAGIC_MAIN #include <allegro5/allegro5.h> #include <stdlib.h> #include <string.h> #include <assert.h> __declspec(dllexport) ALLEGRO_FILE * al_aux_create_file(ALLEGRO_FILE_INTERFACE * fi) { ALLEGRO_FILE * file; assert(fi && "`fi' null"); file = (ALLEGRO_FILE *)malloc(sizeof(ALLEGRO_FILE)); if (!file) return NULL; file->vtable = (ALLEGRO_FILE_INTERFACE *)malloc(sizeof(ALLEGRO_FILE_INTERFACE)); if (!(file->vtable)) { free(file); return NULL; } memcpy(file->vtable, fi, sizeof(ALLEGRO_FILE_INTERFACE)); return file; } __declspec(dllexport) void al_aux_destroy_file(ALLEGRO_FILE * f) { assert(f && "`f' null"); assert(f->vtable && "`f->vtable' null"); free(f->vtable); free(f); } Lastly, I have a class that accepts a Stream and provides the proper methods to interact with the stream. Just to make sure, here it is: /// <summary> /// A semi-opaque data type that allows one to load fonts, etc from a stream. /// </summary> public class AllegroFile : AllegroResource, IDisposable { AllegroInternalFileInterface fileInterface; Stream fileStream; /// <summary> /// Gets the file interface. /// </summary> internal AllegroInternalFileInterface FileInterface { get { return fileInterface; } } /// <summary> /// Constructs an Allegro file from the stream provided. /// </summary> /// <param name="stream">The stream to use.</param> public AllegroFile(Stream stream) { fileStream = stream; fileInterface = new AllegroInternalFileInterface(); fileInterface.fi_fopen = Open; fileInterface.fi_fclose = Close; fileInterface.fi_fread = Read; fileInterface.fi_fwrite = Write; fileInterface.fi_fflush = Flush; fileInterface.fi_ftell = GetPosition; fileInterface.fi_fseek = Seek; fileInterface.fi_feof = GetIsEndOfFile; fileInterface.fi_ferror = GetIsError; fileInterface.fi_fungetc = UngetCharacter; fileInterface.fi_fsize = GetLength; Resource = AllegroFunctions.al_aux_create_file(ref fileInterface); if (!IsValid) throw new AllegroException("Unable to create file"); } /// <summary> /// Disposes of all resources. /// </summary> ~AllegroFile() { Dispose(); } /// <summary> /// Disposes of all resources used. /// </summary> public void Dispose() { if (IsValid) { Resource = IntPtr.Zero; // Should call AllegroFunctions.al_aux_destroy_file fileStream.Dispose(); } } IntPtr Open(string path, string mode) { return IntPtr.Zero; } void Close(IntPtr file) { fileStream.Close(); } int Read(IntPtr file, IntPtr data, int size) { byte[] d = new byte[size]; int read = fileStream.Read(d, 0, size); Marshal.Copy(d, 0, data, size); return read; } int Write(IntPtr file, IntPtr data, int size) { byte[] d = new byte[size]; Marshal.Copy(data, d, 0, size); fileStream.Write(d, 0, size); return size; } bool Flush(IntPtr file) { fileStream.Flush(); return true; } long GetPosition(IntPtr file) { return fileStream.Position; } bool Seek(IntPtr file, long offset, int whence) { SeekOrigin origin = SeekOrigin.Begin; if (whence == 1) origin = SeekOrigin.Current; else if (whence == 2) origin = SeekOrigin.End; fileStream.Seek(offset, origin); return true; } bool GetIsEndOfFile(IntPtr file) { return fileStream.Position == fileStream.Length; } bool GetIsError(IntPtr file) { return false; } int UngetCharacter(IntPtr file, int character) { return -1; } long GetLength(IntPtr file) { return fileStream.Length; } } Now, when I do something like this: AllegroFile file = new AllegroFile(new FileStream("Test.bmp", FileMode.Create, FileAccess.ReadWrite)); bitmap.SaveToFile(file, ".bmp"); ...I get an AccessViolationException. I think I understand why (the garbage collector can relocate structs and classes whenever), but I'd think that the method stub that is created by the framework would take this into consideration and route the calls to the valid classes. However, it seems obviously so that I'm wrong. So basically, is there any way I can successfully wrap that structure? (And I'm sorry for all the code! Hope it's not too much...)

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Can anyone explain why my crypto++ decrypted file is 16 bytes short?

- by Tom Williams

I suspect it might be too much to hope for, but can anyone with experience with crypto++ explain why the "decrypted.out" file created by main() is 16 characters short (which probably not coincidentally is the block size)? I think the issue must be in CryptStreamBuffer::GetNextChar(), but I've been staring at it and the crypto++ documentation for hours. Any other comments about how crummy or naive my std::streambuf implementation are also welcome ;-) And I've just noticed I'm missing some calls to delete so you don't have to tell me about those. Thanks, Tom // Runtime Includes #include <iostream> // Crypto++ Includes #include "aes.h" #include "modes.h" // xxx_Mode< > #include "filters.h" // StringSource and // StreamTransformation #include "files.h" using namespace std; class CryptStreamBuffer: public std::streambuf { public: CryptStreamBuffer(istream& encryptedInput, CryptoPP::StreamTransformation& c); CryptStreamBuffer(ostream& encryptedOutput, CryptoPP::StreamTransformation& c); protected: virtual int_type overflow(int_type ch = traits_type::eof()); virtual int_type uflow(); virtual int_type underflow(); virtual int_type pbackfail(int_type ch); virtual int sync(); private: int GetNextChar(); int m_NextChar; // Buffered character CryptoPP::StreamTransformationFilter* m_StreamTransformationFilter; CryptoPP::FileSource* m_Source; CryptoPP::FileSink* m_Sink; }; // class CryptStreamBuffer CryptStreamBuffer::CryptStreamBuffer(istream& encryptedInput, CryptoPP::StreamTransformation& c) : m_NextChar(traits_type::eof()), m_StreamTransformationFilter(0), m_Source(0), m_Sink(0) { m_StreamTransformationFilter = new CryptoPP::StreamTransformationFilter(c); m_Source = new CryptoPP::FileSource(encryptedInput, false, m_StreamTransformationFilter); } CryptStreamBuffer::CryptStreamBuffer(ostream& encryptedOutput, CryptoPP::StreamTransformation& c) : m_NextChar(traits_type::eof()), m_StreamTransformationFilter(0), m_Source(0), m_Sink(0) { m_Sink = new CryptoPP::FileSink(encryptedOutput); m_StreamTransformationFilter = new CryptoPP::StreamTransformationFilter(c, m_Sink); } CryptStreamBuffer::int_type CryptStreamBuffer::overflow(int_type ch) { return m_StreamTransformationFilter->Put((byte)ch); } CryptStreamBuffer::int_type CryptStreamBuffer::uflow() { int_type result = GetNextChar(); // Reset the buffered character m_NextChar = traits_type::eof(); return result; } CryptStreamBuffer::int_type CryptStreamBuffer::underflow() { return GetNextChar(); } CryptStreamBuffer::int_type CryptStreamBuffer::pbackfail(int_type ch) { return traits_type::eof(); } int CryptStreamBuffer::sync() { if (m_Sink) { m_StreamTransformationFilter->MessageEnd(); } } int CryptStreamBuffer::GetNextChar() { // If we have a buffered character do nothing if (m_NextChar != traits_type::eof()) { return m_NextChar; } // If there are no more bytes currently available then pump the source // *** I SUSPECT THE PROBLEM IS HERE *** if (m_StreamTransformationFilter->MaxRetrievable() == 0) { m_Source->Pump(1024); } // Retrieve the next byte byte nextByte; size_t noBytes = m_StreamTransformationFilter->Get(nextByte); if (0 == noBytes) { return traits_type::eof(); } // Buffer up the next character m_NextChar = nextByte; return m_NextChar; } void InitKey(byte key[]) { key[0] = -62; key[1] = 102; key[2] = 78; key[3] = 75; key[4] = -96; key[5] = 125; key[6] = 66; key[7] = 125; key[8] = -95; key[9] = -66; key[10] = 114; key[11] = 22; key[12] = 48; key[13] = 111; key[14] = -51; key[15] = 112; } void DecryptFile(const char* sourceFileName, const char* destFileName) { ifstream ifs(sourceFileName, ios::in | ios::binary); ofstream ofs(destFileName, ios::out | ios::binary); byte key[CryptoPP::AES::DEFAULT_KEYLENGTH]; InitKey(key); CryptoPP::ECB_Mode<CryptoPP::AES>::Decryption decryptor(key, sizeof(key)); if (ifs) { if (ofs) { CryptStreamBuffer cryptBuf(ifs, decryptor); std::istream decrypt(&cryptBuf); int c; while (EOF != (c = decrypt.get())) { ofs << (char)c; } ofs.flush(); } else { std::cerr << "Failed to open file '" << destFileName << "'." << endl; } } else { std::cerr << "Failed to open file '" << sourceFileName << "'." << endl; } } void EncryptFile(const char* sourceFileName, const char* destFileName) { ifstream ifs(sourceFileName, ios::in | ios::binary); ofstream ofs(destFileName, ios::out | ios::binary); byte key[CryptoPP::AES::DEFAULT_KEYLENGTH]; InitKey(key); CryptoPP::ECB_Mode<CryptoPP::AES>::Encryption encryptor(key, sizeof(key)); if (ifs) { if (ofs) { CryptStreamBuffer cryptBuf(ofs, encryptor); std::ostream encrypt(&cryptBuf); int c; while (EOF != (c = ifs.get())) { encrypt << (char)c; } encrypt.flush(); } else { std::cerr << "Failed to open file '" << destFileName << "'." << endl; } } else { std::cerr << "Failed to open file '" << sourceFileName << "'." << endl; } } int main(int argc, char* argv[]) { EncryptFile(argv[1], "encrypted.out"); DecryptFile("encrypted.out", "decrypted.out"); return 0; }

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how to properly transfer user input from index to invoice?

- by Romel

I got a dillema, I'm trying to find a solution for my code. How do I make it so that when the user inputs a given quantity in the text box from the index.php it will transfer that input quantity to the invoice.php. I've tried doing the post method but it seems like it's not working :/ As always, any help or suggestions will be greatly appreciated! I hope it's something simple:( Here's my code: index.php <html> <style> body{ background-image: url('URL HERE'); font-family: "Helvetica"; font-size:15px; } h1{ color:black; text-align:center; } p{ font-size:15px; } </style> <h1> STORE TITLE HERE </h1> <body> <form action="login.php" method="post"> <?php //Include products info.inc (Which holds all our product arrays and info) //Credit: Tracy & Mark (THank you!) include 'products_info.inc'; /*The following code centers my table on the page, makes the table background white, makes the table 50% of the browser window, gives it a border of 1 px, gives a padding of 2 px between the cell border and content, and gives 1 px of spacing between cells. */ echo "<table align=center bgcolor='FFFFFF' width=50% border=1 cellpadding=1 cellspacing=2>"; //Credit: Tracy & Mark (THank you!) echo '<th>Product</th> <th>Description</th> <th>Price</th> <th>Quantity</th>'; //The following code loops through the whole table body and then prints each row. for($i=0; $i<count($allfood); $i++) { //Credit: Tracy & Mark (THank you!) echo "<tr align=center>"; echo "<td>{$allfood[$i]['Product']}</td>"; echo "<td>{$allfood[$i]['Description']}</td>"; echo "<td>{$allfood[$i]['Price']}</td>"; echo "<td>{$allfood[$i]['Quantity']}</td>"; echo "</tr>"; } //This code ends the table. echo "</table>"; echo "<br>"; ?> <br><center><input type='submit' name='purchase' value='Purchase'></center> </form> </body> </html> And here's my invoice.php <html> <style> body{ background-image: url('URL HERE'); font-family: "Helvetica"; font-size:15px; } h1{ color:black; text-align:center; } p{ font-size:15px; } </style> <h1> Invoice </h1> </html> <?php //Include products info.inc (Which holds all our product arrays and info) //Credit: Tracy & Mark (Thank you!) include 'products_info.inc'; //Display the invoice & 'WELCOME USER. THANK YOU FOR USING THIS DAMN THING msg' /*The following code centers my invoice table on the page, makes the table background white, makes the table 50% of the browser window, gives it a border of 1 px, gives a padding of 2 px between the cell border and content, and gives 1 px of spacing between cells. */ echo "<table align=center bgcolor='FFFFFF' width=50% border=1 cellpadding=1cellspacing=2>"; echo "<tr>"; echo "<td align=center><b>Product</b></td>"; echo "<td align=center><b>Quantity</b></td>"; echo "<td align=center><b>Price</></td>"; echo "<td align=center><b>Extended Price</b></td>"; echo "</tr>"; for($i=0; $i<count($allfood); $i++) { //Credit: Tracy & Mark (Thank you!) $qty= @$_POST['Quantity']['$i']; // This calculates the price if the user orders more than 1 item. $extendedprice = $qty*$allfood[$i]['Price']; echo "<tr>"; echo "<td align=center>{$allfood[$i]['Product']}</td>"; echo "<td align=center>$extendedprice</td>"; echo "<td align=center>{$allfood[$i]['Price']}</td>"; echo "</tr>"; } // The goal here was to make it so that if the user selected a certain quantity from index.php, it would carry over and display on the invoice.php if ($qty = 0) { echo "please choose 1"; } elseif ($qty > 0) { echo $qty; } /*echo "<tr>"; echo "<td align=center>Subtotal</b></td>"; echo "<td align=center></td>"; echo "<td align=center></td>"; echo "<tr>"; echo "<td align=center>Tax at 5.75%</td>"; echo "<td align=center></td>"; echo "<td align=center></td>"; echo "<tr>"; echo "<td align=center><b>Grand total</b></td>"; echo "<td align=center></td>"; echo "<td align=center></td>"; */ echo "</table>"; ?> <br> <center> <form action="index.php" method="post"> <input type="submit" name="home" value="Back to homepage"> </form> </center>

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delete function and upload

- by Jesper Petersen

it must be said that I download the database and all my function is in class. That's how I was incredible pleased function and think they are nice .. That's how I'm going to build a gallery where the id of the upload to the site if it fits with the id_session is log in page, you have the option to delete it. and so it must just go back to / latest pictures / when it delete it from the folder and database. but it comes up with an error as you can see here; Fatal error: Call to a member function bind_param () on a non-object in / home / jesperbo / public_html / mebe.dk / function / function.php on line 411 It is such that I am also in the process of building an upload system where the underlying database and make it smaller after what I have now set it and when it did the 2 things must send me back to / latest-images / but it do not reach the only available picture up on the server and do it with the picture but it will not go back in some way at all. So to / latest-images / Where wrong with it to delete, etc. I lie just here, $stm1->bind_param('i', $id_gallery); function img_slet_indhold(){ if($_SESSION["logged_in"] = true && $_SESSION["rank"] == '1' || $_SESSION["rank"] == 2) { if($stmt = $this->mysqli->prepare('SELECT `title` FROM `gallery` WHERE `id_gallery` = ?')) { $stm1->bind_param('i', $id_gallery); $id_gallery = $_GET["id_gallery"]; $stm1->execute(); $stm1->store_result(); $stm1->bind_result($title); $UploadDir = "/gallery/"; //ligger i toppen af documentet, evt som en define if($stm1->fetch()) { $tmpfile = $UploadDir . "" . $title; if(file_exists($tmpfile)) { unlink($tmpfile); } $tmpfile = $UploadDir . "lille/" . $title; if(file_exists($tmpfile)) { unlink($tmpfile); } $tmpfile = $UploadDir . "store/" . $title; if(file_exists($tmpfile)) { unlink($tmpfile); } } $stm1->close(); } else { /* Der er opstået en fejl */ echo 'Der opstod en fejl i erklæringen: ' . $mysqli->error; } } if($stmt = $this->mysqli->prepare('DELETE FROM `gallery` WHERE `id_gallery` = ?' )) { $stmt->bind_param('i', $id); $id = $_GET["id_gallery"]; $stmt->execute(); header('Location: /nyeste-billeder/'); $stmt->close(); } else { /* Der er opstået en fejl */ echo 'Der opstod en fejl i erklæringen: ' . $mysqli->error; } } So into the file as it should delete from, I have chosen to do so here; <?php session_start(); require_once ("function/function.php"); $mebe = new mebe; $db = $mebe->db_c(); error_reporting(E_ERROR); $img_slet_indhold = $mebe->img_slet_indhold(); ?> So when I upload image to folder and database, and just after can be returned when uploading function img_indhold(){ if($_SESSION["logged_in"] = true && $_SESSION["rank"] == '1' || $_SESSION["rank"] == 2) { include "function/class.upload.php"; $handle = new Upload($_FILES["filename"]); if($handle->uploaded) { //lidt mere store billeder $handle->image_resize = true; $handle->image_ratio_y = true; $handle->image_x = 220; $handle->Process("gallery/store"); //til profil billede lign.. $handle->image_resize = true; $handle->image_ratio_crop = true; $handle->image_y = 115; $handle->image_x = 100; $handle->Process("gallery"); //til profil billede lign.. $handle->image_resize = true; $handle->image_ratio_crop = true; $handle->image_y = 75; $handle->image_x = 75; $handle->Process("gallery/lille"); $pb = $handle->file_dst_name; } if($stmt = $this->mysqli->prepare('INSERT INTO `gallery` (`title`, `id_bruger`) VALUES (?, ?)')) { $stmt->bind_param('si', $title, $id_bruger); $title = $pb; $id_bruger = $_SESSION["id"]; $stmt->execute(); header('Location: /nyeste-billeder/'); $stmt->close(); } } } So when I call it on the page when it is required to do so do it like this; <?php session_start(); require_once ("function/function.php"); $mebe = new mebe; $db = $mebe->db_c(); error_reporting(E_ERROR); $img_slet_indhold = $mebe->img_slet_indhold(); ?> it is here as to when I will upload to the site and show gallery / pictures on the page function vise_img(){ if ($stmt = $this->mysqli->prepare('SELECT `id_gallery`, `title`, `id_bruger` FROM `gallery` ORDER BY `gallery`.`id_gallery` DESC')) { $stmt->execute(); $stmt->store_result(); $stmt->bind_result($id_gallery, $title, $id_bruger); while ($stmt->fetch()) { echo "<div id=\"gallery_box\">"; echo "<a href=\"/profil/$id_bruger/\"><img src=\"/gallery/$title\" alt=\"\" height=\"115\" width=\"100\" border=\"0\"></a>"; if($_SESSION["logged_in"]) { if($id_bruger == $_SESSION["id"]) { echo "<ul>"; echo "<li><a href=\"/nyeste-billeder-slet/$id_gallery/\">Slet</a></li>"; echo "</ul>"; } } echo "</div>"; } /* Luk statement */ $stmt->close(); } else { /* Der er opstået en fejl */ echo 'Der opstod en fejl i erklæringen: ' . $mysqli->error; } } function upload_img(){ if($_SESSION["logged_in"] = true && $_SESSION["rank"] == '1' || $_SESSION["rank"] == 2) { ?> <form name="opslag" method="post" action="/nyeste-ok/" enctype="multipart/form-data"> <input type="file" name="filename" id="filename" onchange="checkFileExt(this)"> <input name="upload" value="Upload" id="background_indhold" onclick="return check()" type="submit"> </form> <?php } elseif ($_SESSION["logged_in"] != true && $_SESSION["rank"] != '1' || $_SESSION["rank"] != 2) { echo "<p>Du har ingen mulighed for at upload billeder på siden</p>"; } } Really hope you are able to help me further!

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Parsing HTML using HTTP Agility Pack

- by Pajci

Here is one table out of 5: <h3>marec - maj 2009</h3> <div class="graf_table"> <table summary="layout table"> <tr> <th>DATUM</th> <td class="datum">10.03.2009</td> <td class="datum">24.03.2009</td> <td class="datum">07.04.2009</td> <td class="datum">21.04.2009</td> <td class="datum">05.05.2009</td> <td class="datum">06.05.2009</td> </tr> <tr> <th>Maloprodajna cena [EUR/L]</th> <td>0,96000</td> <td>0,97000</td> <td>0,99600</td> <td>1,00800</td> <td>1,00800</td> <td>1,01000</td> </tr> <tr> <th>Maloprodajna cena [SIT/L]</th> <td>230,054</td> <td>232,451</td> <td>238,681</td> <td>241,557</td> <td>241,557</td> <td>242,036</td> </tr> <tr> <th>Prodajna cena brez dajatev</th> <td>0,33795</td> <td>0,34628</td> <td>0,36795</td> <td>0,37795</td> <td>0,37795</td> <td>0,37962</td> </tr> <tr> <th>Trošarina</th> <td>0,46205</td> <td>0,46205</td> <td>0,46205</td> <td>0,46205</td> <td>0,46205</td> <td>0,46205</td> </tr> <tr> <th>DDV</th> <td>0,16000</td> <td>0,16167</td> <td>0,16600</td> <td>0,16800</td> <td>0,16800</td> <td>0,16833</td> </tr> </table> </div> I have to extract out values, where table header is DATUM and Maloprodajna cena [EUR/L]. I am using Agility HTML pack. this.htmlDoc = new HtmlAgilityPack.HtmlDocument(); this.htmlDoc.OptionCheckSyntax = true; this.htmlDoc.OptionFixNestedTags = true; this.htmlDoc.OptionAutoCloseOnEnd = true; this.htmlDoc.OptionOutputAsXml = true; // is this necessary ?? this.htmlDoc.OptionDefaultStreamEncoding = System.Text.Encoding.Default; I had a lot of trouble with getting those values out. I started with: var query = from html in doc.DocumentNode.SelectNodes("//div[@class='graf_table']").Cast<HtmlNode>() from table in html.SelectNodes("//table").Cast<HtmlNode>() from row in table.SelectNodes("tr").Cast<HtmlNode>() from cell in row.SelectNodes("th|td").Cast<HtmlNode>() select new { Table = table.Id, CellText = cell.InnerHtml }; but could not figure out a way to select only values where table header is DATUM and Maloprodajna cena[EUR/L]. Is it possible to do that with where clause? Then I ended with those two queries: var date = (from d in htmlDoc.DocumentNode.SelectNodes("//div[@class='graf_table']//table//tr[1]/td") select DateTime.Parse(d.InnerText)).ToArray(); var price = (from p in htmlDoc.DocumentNode.SelectNodes("//div[@class='graf_table']//table//tr[2]/td") select double.Parse(p.InnerText)).ToArray(); Is it possible to combine those two queries? And how would I convert that to lambda expression? I just started to learn those things and I would like to know how it is done so that in the future I would not have those question. O, one more question ... does anybody know any graph control, cause I have to show those values in graph. I started with Microsoft Chart Controls, but I am having trouble with setting it. So if anyone has any experience with it I would like to know how to set it, so that x axle will show all values not every second ... example: if I have: 10.03.2009, 24.03.2009, 07.04.2009, 21.04.2009, 05.05.2009, 06.05.2009 it show only: 10.03.2009, 07.04.2009, 05.05.2009, ect. I bind data to graph like that: chart1.Series["Series1"].Points.DataBindXY(date, price); I lot of questions for my fist post ... hehe, hope that I was not indistinct or something. Thank's for any reply!

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Getting sync(uploading) multipale data on the remote server from iphone

- by Ajay

i am try to sync or upload the data on the remote server from iphone but not getting it.I try this from 1 week but didn't success how can solve this .I am using the NSURLConnection methods or any one give idea on ASIHTTPRequest method but i am new for *ASIHTTPReques*t .I need this method only .For this code like this -(void)sendRequestforContent { //this for finding the date of sync on the server NSDate* date = [NSDate date]; //Create the dateformatter object NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease]; //Set the required date format [formatter setDateFormat:@"dd-MMM-yyyy"]; //Get the string date NSString* str = [formatter stringFromDate:date]; NSError *error = nil; NSHTTPURLResponse *response = nil; NSMutableData *postBody = [NSMutableData data]; NSURL *url = [NSURL URLWithString:@"http://www.google.com"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; NSString *boundary = @"-------------------a9d8vyb89089dy70"; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; [request setHTTPMethod:@"POST"]; [request setValue:contentType forHTTPHeaderField:@"Content-Type"]; [postBody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this is for TOKEN_API [postBody appendData:[@"Content-disposition: form-data; name=\"Token\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[tokenapi dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the CONTENT_ID [postBody appendData:[@"Content-disposition: form-data; name=\"contentID\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[content_id dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the CONTENTTYPE_ID [postBody appendData:[@"Content-disposition: form-data; name=\"contentTypeID\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; NSString *ContentTypeString = [NSString stringWithFormat:@"%d",content_type]; [postBody appendData:[ContentTypeString dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the CONTENT_Location_Id [postBody appendData:[@"Content-disposition: form-data; name=\"contentLocationID\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[contenLocation_id dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this is for the User_Caption [postBody appendData:[@"Content-disposition: form-data; name=\"userCaption\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[user_caption dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this is for the User_Comment [postBody appendData:[@"Content-disposition: form-data; name=\"userComment\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[user_comment dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the Tags [postBody appendData:[@"Content-disposition: form-data; name=\"tags\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[tag dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the Date_Record [postBody appendData:[@"Content-disposition: form-data; name=\"dateRecorded\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[date_recorded dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the image_data [postBody appendData:[[NSString stringWithFormat:@"Content-disposition: form-data; name=\"image_file\"; filename=\"%@\"\r\n",@"image.jpg"] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[@"Content-Type: image/jpg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:image]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the Share_type [postBody appendData:[@"Content-disposition: form-data; name=\"shareType\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; NSString *ShareString = [NSString stringWithFormat:@"%d",share_type]; [postBody appendData:[ShareString dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the Views [postBody appendData:[@"Content-disposition: form-data; name=\"views\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; NSString *ViewsString = [NSString stringWithFormat:@"%d",views]; [postBody appendData:[ViewsString dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the PLAY_time [postBody appendData:[@"Content-disposition: form-data; name=\"playTime\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; NSString *TimeString = [NSString stringWithFormat:@"%d",play_time]; [postBody appendData:[TimeString dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //this for the Posted_By [postBody appendData:[@"Content-disposition: form-data; name=\"postedBy\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[postred_by dataUsingEncoding:NSUTF8StringEncoding]]; //this for the AVG_Rating [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[@"Content-disposition: form-data; name=\"avgRating\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; NSString *AvgString = [NSString stringWithFormat:@"%d",avg_rating]; [postBody appendData:[AvgString dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[@"Content-disposition: form-data; name=\"LastSyncDate\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[str dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [request setHTTPBody:postBody]; NSData *shoutData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; NSString *returnString = [[NSString alloc] initWithData:shoutData encoding:NSUTF8StringEncoding]; NSLog(@"%@",returnString); } it is not going into the this mthods -(void)connectionDidFinishLoading:(NSURLConnection *)connection { loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding]; NSLog(@"%@",loginStatus); } It show me html page on console I hope people help me to solve it out

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Linked List manipulation, issues retrieving data c++

- by floatfil

I'm trying to implement some functions to manipulate a linked list. The implementation is a template typename T and the class is 'List' which includes a 'head' pointer and also a struct: struct Node { // the node in a linked list T* data; // pointer to actual data, operations in T Node* next; // pointer to a Node }; Since it is a template, and 'T' can be any data, how do I go about checking the data of a list to see if it matches the data input into the function? The function is called 'retrieve' and takes two parameters, the data and a pointer: bool retrieve(T target, T*& ptr); // This is the prototype we need to use for the project "bool retrieve : similar to remove, but not removed from list. If there are duplicates in the list, the first one encountered is retrieved. Second parameter is unreliable if return value is false. E.g., " Employee target("duck", "donald"); success = company1.retrieve(target, oneEmployee); if (success) { cout << "Found in list: " << *oneEmployee << endl; } And the function is called like this: company4.retrieve(emp3, oneEmployee) So that when you cout *oneEmployee, you'll get the data of that pointer (in this case the data is of type Employee). (Also, this is assuming all data types have the apropriate overloaded operators) I hope this makes sense so far, but my issue is in comparing the data in the parameter and the data while going through the list. (The data types that we use all include overloads for equality operators, so oneData == twoData is valid) This is what I have so far: template <typename T> bool List<T>::retrieve(T target , T*& ptr) { List<T>::Node* dummyPtr = head; // point dummy pointer to what the list's head points to for(;;) { if (*dummyPtr->data == target) { // EDIT: it now compiles, but it breaks here and I get an Access Violation error. ptr = dummyPtr->data; // set the parameter pointer to the dummy pointer return true; // return true } else { dummyPtr = dummyPtr->next; // else, move to the next data node } } return false; } Here is the implementation for the Employee class: //-------------------------- constructor ----------------------------------- Employee::Employee(string last, string first, int id, int sal) { idNumber = (id >= 0 && id <= MAXID? id : -1); salary = (sal >= 0 ? sal : -1); lastName = last; firstName = first; } //-------------------------- destructor ------------------------------------ // Needed so that memory for strings is properly deallocated Employee::~Employee() { } //---------------------- copy constructor ----------------------------------- Employee::Employee(const Employee& E) { lastName = E.lastName; firstName = E.firstName; idNumber = E.idNumber; salary = E.salary; } //-------------------------- operator= --------------------------------------- Employee& Employee::operator=(const Employee& E) { if (&E != this) { idNumber = E.idNumber; salary = E.salary; lastName = E.lastName; firstName = E.firstName; } return *this; } //----------------------------- setData ------------------------------------ // set data from file bool Employee::setData(ifstream& inFile) { inFile >> lastName >> firstName >> idNumber >> salary; return idNumber >= 0 && idNumber <= MAXID && salary >= 0; } //------------------------------- < ---------------------------------------- // < defined by value of name bool Employee::operator<(const Employee& E) const { return lastName < E.lastName || (lastName == E.lastName && firstName < E.firstName); } //------------------------------- <= ---------------------------------------- // < defined by value of inamedNumber bool Employee::operator<=(const Employee& E) const { return *this < E || *this == E; } //------------------------------- > ---------------------------------------- // > defined by value of name bool Employee::operator>(const Employee& E) const { return lastName > E.lastName || (lastName == E.lastName && firstName > E.firstName); } //------------------------------- >= ---------------------------------------- // < defined by value of name bool Employee::operator>=(const Employee& E) const { return *this > E || *this == E; } //----------------- operator == (equality) ---------------- // if name of calling and passed object are equal, // return true, otherwise false // bool Employee::operator==(const Employee& E) const { return lastName == E.lastName && firstName == E.firstName; } //----------------- operator != (inequality) ---------------- // return opposite value of operator== bool Employee::operator!=(const Employee& E) const { return !(*this == E); } //------------------------------- << --------------------------------------- // display Employee object ostream& operator<<(ostream& output, const Employee& E) { output << setw(4) << E.idNumber << setw(7) << E.salary << " " << E.lastName << " " << E.firstName << endl; return output; } I will include a check for NULL pointer but I just want to get this working and will test it on a list that includes the data I am checking. Thanks to whoever can help and as usual, this is for a course so I don't expect or want the answer, but any tips as to what might be going wrong will help immensely!

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Array structure returned by Yii's model

- by user1104955

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Why is there a /etc/init.d/mysql file on this Slackware machine? How could it have gotten there?

- by jasonspiro

A client of my IT-consulting service owns a web-development shop. He's been having problems with a Slackware 12.0 server running MySQL 5.0.67. The machine was set up by the client's sysadmin, who left on bad terms. My client no longer employs a sysadmin. As far as I can tell, the only copy of MySQL that's installed is the one described in /var/log/packages/mysql-5.0.67-i486-1: PACKAGE NAME: mysql-5.0.67-i486-1 COMPRESSED PACKAGE SIZE: 16828 K UNCOMPRESSED PACKAGE SIZE: 33840 K PACKAGE LOCATION: /var/slapt-get/archives/./slackware/ap/mysql-5.0.67-i486-1.tgz PACKAGE DESCRIPTION: mysql: mysql (SQL-based relational database server) mysql: mysql: MySQL is a fast, multi-threaded, multi-user, and robust SQL mysql: (Structured Query Language) database server. It comes with a nice API mysql: which makes it easy to integrate into other applications. mysql: mysql: The home page for MySQL is http://www.mysql.com/ mysql: mysql: mysql: mysql: FILE LIST: ./ var/ var/lib/ var/lib/mysql/ var/run/ var/run/mysql/ install/ install/doinst.sh install/slack-desc usr/ usr/include/ usr/include/mysql/ usr/include/mysql/my_alloc.h usr/include/mysql/sql_common.h usr/include/mysql/my_dbug.h usr/include/mysql/errmsg.h usr/include/mysql/my_pthread.h usr/include/mysql/my_list.h usr/include/mysql/mysql.h usr/include/mysql/sslopt-vars.h usr/include/mysql/my_config.h usr/include/mysql/mysql_com.h usr/include/mysql/m_string.h usr/include/mysql/sslopt-case.h usr/include/mysql/my_xml.h usr/include/mysql/sql_state.h usr/include/mysql/my_global.h usr/include/mysql/my_sys.h usr/include/mysql/mysqld_ername.h usr/include/mysql/mysqld_error.h usr/include/mysql/sslopt-longopts.h usr/include/mysql/keycache.h usr/include/mysql/my_net.h usr/include/mysql/mysql_version.h usr/include/mysql/my_no_pthread.h usr/include/mysql/decimal.h usr/include/mysql/readline.h usr/include/mysql/my_attribute.h usr/include/mysql/typelib.h usr/include/mysql/my_dir.h usr/include/mysql/raid.h usr/include/mysql/m_ctype.h usr/include/mysql/mysql_embed.h usr/include/mysql/mysql_time.h usr/include/mysql/my_getopt.h usr/lib/ usr/lib/mysql/ usr/lib/mysql/libmysqlclient_r.so.15.0.0 usr/lib/mysql/libmysqlclient_r.la usr/lib/mysql/libmyisammrg.a usr/lib/mysql/libmystrings.a usr/lib/mysql/libmyisam.a usr/lib/mysql/libmysqlclient.so.15.0.0 usr/lib/mysql/libmysqlclient_r.a usr/lib/mysql/libmysqlclient.a usr/lib/mysql/libheap.a usr/lib/mysql/libvio.a usr/lib/mysql/libmysqlclient.la usr/lib/mysql/libmysys.a usr/lib/mysql/libdbug.a usr/bin/ usr/bin/comp_err usr/bin/my_print_defaults usr/bin/resolve_stack_dump usr/bin/msql2mysql usr/bin/mysqltestmanager-pwgen usr/bin/myisampack usr/bin/replace usr/bin/mysqld_multi usr/bin/mysqlaccess usr/bin/mysql_install_db usr/bin/innochecksum usr/bin/myisam_ftdump usr/bin/mysqlcheck usr/bin/mysqltest usr/bin/mysql_upgrade_shell usr/bin/mysql_secure_installation usr/bin/mysql_fix_extensions usr/bin/mysqld_safe usr/bin/mysql_explain_log usr/bin/mysqlimport usr/bin/myisamlog usr/bin/mysql_tzinfo_to_sql usr/bin/mysql_upgrade usr/bin/mysqltestmanager usr/bin/mysql_fix_privilege_tables usr/bin/mysql_find_rows usr/bin/mysql_convert_table_format usr/bin/mysqltestmanagerc usr/bin/mysqlhotcopy usr/bin/mysqldump usr/bin/mysqlshow usr/bin/mysqlbug usr/bin/mysql_config usr/bin/mysqldumpslow usr/bin/mysql_waitpid usr/bin/mysqlbinlog usr/bin/mysql_client_test usr/bin/perror usr/bin/mysql usr/bin/myisamchk usr/bin/mysql_setpermission usr/bin/mysqladmin usr/bin/mysql_zap usr/bin/mysql_tableinfo usr/bin/resolveip usr/share/ usr/share/mysql/ usr/share/mysql/errmsg.txt usr/share/mysql/swedish/ usr/share/mysql/swedish/errmsg.sys usr/share/mysql/mysql_system_tables_data.sql usr/share/mysql/mysql.server usr/share/mysql/hungarian/ usr/share/mysql/hungarian/errmsg.sys usr/share/mysql/norwegian/ usr/share/mysql/norwegian/errmsg.sys usr/share/mysql/slovak/ usr/share/mysql/slovak/errmsg.sys usr/share/mysql/spanish/ usr/share/mysql/spanish/errmsg.sys usr/share/mysql/polish/ usr/share/mysql/polish/errmsg.sys usr/share/mysql/ukrainian/ usr/share/mysql/ukrainian/errmsg.sys usr/share/mysql/danish/ usr/share/mysql/danish/errmsg.sys usr/share/mysql/romanian/ usr/share/mysql/romanian/errmsg.sys usr/share/mysql/english/ usr/share/mysql/english/errmsg.sys usr/share/mysql/charsets/ usr/share/mysql/charsets/latin2.xml usr/share/mysql/charsets/greek.xml usr/share/mysql/charsets/koi8r.xml usr/share/mysql/charsets/latin1.xml usr/share/mysql/charsets/cp866.xml usr/share/mysql/charsets/geostd8.xml usr/share/mysql/charsets/cp1250.xml usr/share/mysql/charsets/koi8u.xml usr/share/mysql/charsets/cp852.xml usr/share/mysql/charsets/hebrew.xml usr/share/mysql/charsets/latin7.xml usr/share/mysql/charsets/README usr/share/mysql/charsets/ascii.xml usr/share/mysql/charsets/cp1251.xml usr/share/mysql/charsets/macce.xml usr/share/mysql/charsets/latin5.xml usr/share/mysql/charsets/Index.xml usr/share/mysql/charsets/macroman.xml usr/share/mysql/charsets/cp1256.xml usr/share/mysql/charsets/keybcs2.xml usr/share/mysql/charsets/swe7.xml usr/share/mysql/charsets/armscii8.xml usr/share/mysql/charsets/dec8.xml usr/share/mysql/charsets/cp1257.xml usr/share/mysql/charsets/hp8.xml usr/share/mysql/charsets/cp850.xml usr/share/mysql/korean/ usr/share/mysql/korean/errmsg.sys usr/share/mysql/german/ usr/share/mysql/german/errmsg.sys usr/share/mysql/mi_test_all.res usr/share/mysql/greek/ usr/share/mysql/greek/errmsg.sys usr/share/mysql/french/ usr/share/mysql/french/errmsg.sys usr/share/mysql/mysql_fix_privilege_tables.sql usr/share/mysql/dutch/ usr/share/mysql/dutch/errmsg.sys usr/share/mysql/serbian/ usr/share/mysql/serbian/errmsg.sys usr/share/mysql/mysql_system_tables.sql usr/share/mysql/my-huge.cnf usr/share/mysql/portuguese/ usr/share/mysql/portuguese/errmsg.sys usr/share/mysql/japanese/ usr/share/mysql/japanese/errmsg.sys usr/share/mysql/mysql_test_data_timezone.sql usr/share/mysql/russian/ usr/share/mysql/russian/errmsg.sys usr/share/mysql/czech/ usr/share/mysql/czech/errmsg.sys usr/share/mysql/fill_help_tables.sql usr/share/mysql/estonian/ usr/share/mysql/estonian/errmsg.sys usr/share/mysql/my-medium.cnf usr/share/mysql/norwegian-ny/ usr/share/mysql/norwegian-ny/errmsg.sys usr/share/mysql/my-small.cnf usr/share/mysql/mysql-log-rotate usr/share/mysql/italian/ usr/share/mysql/italian/errmsg.sys usr/share/mysql/my-large.cnf usr/share/mysql/ndb-config-2-node.ini usr/share/mysql/binary-configure usr/share/mysql/mi_test_all usr/share/mysql/mysqld_multi.server usr/share/mysql/my-innodb-heavy-4G.cnf usr/doc/ usr/doc/mysql-5.0.67/ usr/doc/mysql-5.0.67/README usr/doc/mysql-5.0.67/Docs/ usr/doc/mysql-5.0.67/Docs/INSTALL-BINARY usr/doc/mysql-5.0.67/COPYING usr/info/ usr/info/mysql.info.gz usr/libexec/ usr/libexec/mysqld usr/libexec/mysqlmanager usr/man/ usr/man/man8/ usr/man/man8/mysqlmanager.8.gz usr/man/man8/mysqld.8.gz usr/man/man1/ usr/man/man1/mysql_zap.1.gz usr/man/man1/mysql_setpermission.1.gz usr/man/man1/mysql_tzinfo_to_sql.1.gz usr/man/man1/msql2mysql.1.gz usr/man/man1/mysql_tableinfo.1.gz usr/man/man1/mysql_explain_log.1.gz usr/man/man1/mysqlcheck.1.gz usr/man/man1/comp_err.1.gz usr/man/man1/my_print_defaults.1.gz usr/man/man1/mysqlbinlog.1.gz usr/man/man1/myisam_ftdump.1.gz usr/man/man1/mysql_upgrade.1.gz usr/man/man1/mysql.1.gz usr/man/man1/mysql_client_test.1.gz usr/man/man1/resolve_stack_dump.1.gz usr/man/man1/mysql_fix_extensions.1.gz usr/man/man1/mysqlmanagerc.1.gz usr/man/man1/mysql_config.1.gz usr/man/man1/mysqlshow.1.gz usr/man/man1/myisamlog.1.gz usr/man/man1/replace.1.gz usr/man/man1/mysqlmanager-pwgen.1.gz usr/man/man1/mysqltest.1.gz usr/man/man1/innochecksum.1.gz usr/man/man1/mysqladmin.1.gz usr/man/man1/perror.1.gz usr/man/man1/mysql_waitpid.1.gz usr/man/man1/mysql_convert_table_format.1.gz usr/man/man1/mysqlman.1.gz usr/man/man1/mysqlimport.1.gz usr/man/man1/mysqlbug.1.gz usr/man/man1/mysql_find_rows.1.gz usr/man/man1/myisampack.1.gz usr/man/man1/myisamchk.1.gz usr/man/man1/mysql_fix_privilege_tables.1.gz usr/man/man1/mysql-stress-test.pl.1.gz usr/man/man1/resolveip.1.gz usr/man/man1/make_win_bin_dist.1.gz usr/man/man1/mysqlhotcopy.1.gz usr/man/man1/mysqld_multi.1.gz usr/man/man1/safe_mysqld.1.gz usr/man/man1/mysql_secure_installation.1.gz usr/man/man1/mysql_install_db.1.gz usr/man/man1/mysqldump.1.gz usr/man/man1/mysql-test-run.pl.1.gz usr/man/man1/mysqld_safe.1.gz usr/man/man1/mysqlaccess.1.gz usr/man/man1/mysql.server.1.gz usr/man/man1/make_win_src_distribution.1.gz etc/ etc/rc.d/ etc/rc.d/rc.mysqld.new etc/my-huge.cnf etc/my-medium.cnf etc/my-small.cnf etc/my-large.cnf /etc/rc.d/rc.mysqld is an ordinary Slackware-type start/stop script: #!/bin/sh # Start/stop/restart mysqld. # # Copyright 2003 Patrick J. Volkerding, Concord, CA # Copyright 2003 Slackware Linux, Inc., Concord, CA # # This program comes with NO WARRANTY, to the extent permitted by law. # You may redistribute copies of this program under the terms of the # GNU General Public License. # To start MySQL automatically at boot, be sure this script is executable: # chmod 755 /etc/rc.d/rc.mysqld # Before you can run MySQL, you must have a database. To install an initial # database, do this as root: # # su - mysql # mysql_install_db # # Note that step one is becoming the mysql user. It's important to do this # before making any changes to the database, or mysqld won't be able to write # to it later (this can be fixed with 'chown -R mysql.mysql /var/lib/mysql'). # To allow outside connections to the database comment out the next line. # If you don't need incoming network connections, then leave the line # uncommented to improve system security. #SKIP="--skip-networking" # Start mysqld: mysqld_start() { if [ -x /usr/bin/mysqld_safe ]; then # If there is an old PID file (no mysqld running), clean it up: if [ -r /var/run/mysql/mysql.pid ]; then if ! ps axc | grep mysqld 1> /dev/null 2> /dev/null ; then echo "Cleaning up old /var/run/mysql/mysql.pid." rm -f /var/run/mysql/mysql.pid fi fi /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/run/mysql/mysql.pid $SKIP & fi } # Stop mysqld: mysqld_stop() { # If there is no PID file, ignore this request... if [ -r /var/run/mysql/mysql.pid ]; then killall mysqld # Wait at least one minute for it to exit, as we don't know how big the DB is... for second in 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 \ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 60 ; do if [ ! -r /var/run/mysql/mysql.pid ]; then break; fi sleep 1 done if [ "$second" = "60" ]; then echo "WARNING: Gave up waiting for mysqld to exit!" sleep 15 fi fi } # Restart mysqld: mysqld_restart() { mysqld_stop mysqld_start } case "$1" in 'start') mysqld_start ;; 'stop') mysqld_stop ;; 'restart') mysqld_restart ;; *) echo "usage $0 start|stop|restart" esac But there's also an unexpected init script on the machine, named /etc/init.d/mysql: #!/bin/sh # Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB # This file is public domain and comes with NO WARRANTY of any kind # MySQL daemon start/stop script. # Usually this is put in /etc/init.d (at least on machines SYSV R4 based # systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/K01mysql. # When this is done the mysql server will be started when the machine is # started and shut down when the systems goes down. # Comments to support chkconfig on RedHat Linux # chkconfig: 2345 64 36 # description: A very fast and reliable SQL database engine. # Comments to support LSB init script conventions ### BEGIN INIT INFO # Provides: mysql # Required-Start: $local_fs $network $remote_fs # Should-Start: ypbind nscd ldap ntpd xntpd # Required-Stop: $local_fs $network $remote_fs # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: start and stop MySQL # Description: MySQL is a very fast and reliable SQL database engine. ### END INIT INFO # If you install MySQL on some other places than /usr, then you # have to do one of the following things for this script to work: # # - Run this script from within the MySQL installation directory # - Create a /etc/my.cnf file with the following information: # [mysqld] # basedir=<path-to-mysql-installation-directory> # - Add the above to any other configuration file (for example ~/.my.ini) # and copy my_print_defaults to /usr/bin # - Add the path to the mysql-installation-directory to the basedir variable # below. # # If you want to affect other MySQL variables, you should make your changes # in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files. # If you change base dir, you must also change datadir. These may get # overwritten by settings in the MySQL configuration files. #basedir= #datadir= # Default value, in seconds, afterwhich the script should timeout waiting # for server start. # Value here is overriden by value in my.cnf. # 0 means don't wait at all # Negative numbers mean to wait indefinitely service_startup_timeout=900 # The following variables are only set for letting mysql.server find things. # Set some defaults pid_file=/var/run/mysql/mysql.pid server_pid_file=/var/run/mysql/mysql.pid use_mysqld_safe=1 user=mysql if test -z "$basedir" then basedir=/usr bindir=/usr/bin if test -z "$datadir" then datadir=/var/lib/mysql fi sbindir=/usr/sbin libexecdir=/usr/libexec else bindir="$basedir/bin" if test -z "$datadir" then datadir="$basedir/data" fi sbindir="$basedir/sbin" libexecdir="$basedir/libexec" fi # datadir_set is used to determine if datadir was set (and so should be # *not* set inside of the --basedir= handler.) datadir_set= # # Use LSB init script functions for printing messages, if possible # lsb_functions="/lib/lsb/init-functions" if test -f $lsb_functions ; then . $lsb_functions else log_success_msg() { echo " SUCCESS! $@" } log_failure_msg() { echo " ERROR! $@" } fi PATH=/sbin:/usr/sbin:/bin:/usr/bin:$basedir/bin export PATH mode=$1 # start or stop shift other_args="$*" # uncommon, but needed when called from an RPM upgrade action # Expected: "--skip-networking --skip-grant-tables" # They are not checked here, intentionally, as it is the resposibility # of the "spec" file author to give correct arguments only. case `echo "testing\c"`,`echo -n testing` in *c*,-n*) echo_n= echo_c= ;; *c*,*) echo_n=-n echo_c= ;; *) echo_n= echo_c='\c' ;; esac parse_server_arguments() { for arg do case "$arg" in --basedir=*) basedir=`echo "$arg" | sed -e 's/^[^=]*=//'` bindir="$basedir/bin" if test -z "$datadir_set"; then datadir="$basedir/data" fi sbindir="$basedir/sbin" libexecdir="$basedir/libexec" ;; --datadir=*) datadir=`echo "$arg" | sed -e 's/^[^=]*=//'` datadir_set=1 ;; --user=*) user=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --pid-file=*) server_pid_file=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --use-mysqld_safe) use_mysqld_safe=1;; --use-manager) use_mysqld_safe=0;; esac done } parse_manager_arguments() { for arg do case "$arg" in --pid-file=*) pid_file=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --user=*) user=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; esac done } wait_for_pid () { verb="$1" manager_pid="$2" # process ID of the program operating on the pid-file i=0 avoid_race_condition="by checking again" while test $i -ne $service_startup_timeout ; do case "$verb" in 'created') # wait for a PID-file to pop into existence. test -s $pid_file && i='' && break ;; 'removed') # wait for this PID-file to disappear test ! -s $pid_file && i='' && break ;; *) echo "wait_for_pid () usage: wait_for_pid created|removed manager_pid" exit 1 ;; esac # if manager isn't running, then pid-file will never be updated if test -n "$manager_pid"; then if kill -0 "$manager_pid" 2>/dev/null; then : # the manager still runs else # The manager may have exited between the last pid-file check and now. if test -n "$avoid_race_condition"; then avoid_race_condition="" continue # Check again. fi # there's nothing that will affect the file. log_failure_msg "Manager of pid-file quit without updating file." return 1 # not waiting any more. fi fi echo $echo_n ".$echo_c" i=`expr $i + 1` sleep 1 done if test -z "$i" ; then log_success_msg return 0 else log_failure_msg return 1 fi } # Get arguments from the my.cnf file, # the only group, which is read from now on is [mysqld] if test -x ./bin/my_print_defaults then print_defaults="./bin/my_print_defaults" elif test -x $bindir/my_print_defaults then print_defaults="$bindir/my_print_defaults" elif test -x $bindir/mysql_print_defaults then print_defaults="$bindir/mysql_print_defaults" else # Try to find basedir in /etc/my.cnf conf=/etc/my.cnf print_defaults= if test -r $conf then subpat='^[^=]*basedir[^=]*=$.*$$' dirs=`sed -e "/$subpat/!d" -e 's//\1/' $conf` for d in $dirs do d=`echo $d | sed -e 's/[ ]//g'` if test -x "$d/bin/my_print_defaults" then print_defaults="$d/bin/my_print_defaults" break fi if test -x "$d/bin/mysql_print_defaults" then print_defaults="$d/bin/mysql_print_defaults" break fi done fi # Hope it's in the PATH ... but I doubt it test -z "$print_defaults" && print_defaults="my_print_defaults" fi # # Read defaults file from 'basedir'. If there is no defaults file there # check if it's in the old (depricated) place (datadir) and read it from there # extra_args="" if test -r "$basedir/my.cnf" then extra_args="-e $basedir/my.cnf" else if test -r "$datadir/my.cnf" then extra_args="-e $datadir/my.cnf" fi fi parse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server` # Look for the pidfile parse_manager_arguments `$print_defaults $extra_args manager` # # Set pid file if not given # if test -z "$pid_file" then pid_file=$datadir/mysqlmanager-`/bin/hostname`.pid else case "$pid_file" in /* ) ;; * ) pid_file="$datadir/$pid_file" ;; esac fi if test -z "$server_pid_file" then server_pid_file=$datadir/`/bin/hostname`.pid else case "$server_pid_file" in /* ) ;; * ) server_pid_file="$datadir/$server_pid_file" ;; esac fi case "$mode" in 'start') # Start daemon # Safeguard (relative paths, core dumps..) cd $basedir manager=$bindir/mysqlmanager if test -x $libexecdir/mysqlmanager then manager=$libexecdir/mysqlmanager elif test -x $sbindir/mysqlmanager then manager=$sbindir/mysqlmanager fi echo $echo_n "Starting MySQL" if test -x $manager -a "$use_mysqld_safe" = "0" then if test -n "$other_args" then log_failure_msg "MySQL manager does not support options '$other_args'" exit 1 fi # Give extra arguments to mysqld with the my.cnf file. This script may # be overwritten at next upgrade. $manager --user=$user --pid-file=$pid_file >/dev/null 2>&1 & wait_for_pid created $!; return_value=$? # Make lock for RedHat / SuSE if test -w /var/lock/subsys then touch /var/lock/subsys/mysqlmanager fi exit $return_value elif test -x $bindir/mysqld_safe then # Give extra arguments to mysqld with the my.cnf file. This script # may be overwritten at next upgrade. pid_file=$server_pid_file $bindir/mysqld_safe --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 & wait_for_pid created $!; return_value=$? # Make lock for RedHat / SuSE if test -w /var/lock/subsys then touch /var/lock/subsys/mysql fi exit $return_value else log_failure_msg "Couldn't find MySQL manager ($manager) or server ($bindir/mysqld_safe)" fi ;; 'stop') # Stop daemon. We use a signal here to avoid having to know the # root password. # The RedHat / SuSE lock directory to remove lock_dir=/var/lock/subsys/mysqlmanager # If the manager pid_file doesn't exist, try the server's if test ! -s "$pid_file" then pid_file=$server_pid_file lock_dir=/var/lock/subsys/mysql fi if test -s "$pid_file" then mysqlmanager_pid=`cat $pid_file` echo $echo_n "Shutting down MySQL" kill $mysqlmanager_pid # mysqlmanager should remove the pid_file when it exits, so wait for it. wait_for_pid removed "$mysqlmanager_pid"; return_value=$? # delete lock for RedHat / SuSE if test -f $lock_dir then rm -f $lock_dir fi exit $return_value else log_failure_msg "MySQL manager or server PID file could not be found!" fi ;; 'restart') # Stop the service and regardless of whether it was # running or not, start it again. if $0 stop $other_args; then $0 start $other_args else log_failure_msg "Failed to stop running server, so refusing to try to start." exit 1 fi ;; 'reload'|'force-reload') if test -s "$server_pid_file" ; then read mysqld_pid < $server_pid_file kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL" touch $server_pid_file else log_failure_msg "MySQL PID file could not be found!" exit 1 fi ;; 'status') # First, check to see if pid file exists if test -s "$server_pid_file" ; then read mysqld_pid < $server_pid_file if kill -0 $mysqld_pid 2>/dev/null ; then log_success_msg "MySQL running ($mysqld_pid)" exit 0 else log_failure_msg "MySQL is not running, but PID file exists" exit 1 fi else # Try to find appropriate mysqld process mysqld_pid=`pidof $sbindir/mysqld` if test -z $mysqld_pid ; then if test "$use_mysqld_safe" = "0" ; then lockfile=/var/lock/subsys/mysqlmanager else lockfile=/var/lock/subsys/mysql fi if test -f $lockfile ; then log_failure_msg "MySQL is not running, but lock exists" exit 2 fi log_failure_msg "MySQL is not running" exit 3 else log_failure_msg "MySQL is running but PID file could not be found" exit 4 fi fi ;; *) # usage echo "Usage: $0 {start|stop|restart|reload|force-reload|status} [ MySQL server options ]" exit 1 ;; esac exit 0 An unimportant aside: The previous users of the machine kept a messy home directory. Their home directory was /root. I've pasted a copy at http://www.pastebin.ca/2167496. My question: Why is there a /etc/init.d/mysql file on this Slackware machine? How could it have gotten there? P.S. This question is far from perfect. Please feel free to edit it.

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Slow NFS and GFS2 performance

- by Tiago

Recently I've designed and configured a 4 node cluster for a webapp that does lots of file handling. The cluster have been broken down into 2 main roles, webserver and storage. Each role is replicated to a second server using drbd in active/passive mode. The webserver does a NFS mount of the data directory of the storage server and the latter also has a webserver running to serve files to browser clients. In the storage servers I've created a GFS2 FS to hold the data which is wired to drbd. I've chose GFS2 mainly because the announced performance and also because the volume size which has to be pretty high. Since we entered production I've been facing two problems that I think are deeply connected. First of all, the NFS mount on the webservers keeps hanging for a minute or so and then resumes normal operations. By analyzing the logs I've found out that NFS stops answering for a while and outputs the following log lines: Oct 15 18:15:42 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:44 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:46 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:47 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:47 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:47 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:48 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:48 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:51 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:52 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:52 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:55 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:55 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:58 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK In this case, the hang lasted for 16 seconds but sometimes it takes 1 or 2 minutes to resume normal operations. My first guess was this was happening due to heavy load of the NFS mount and that by increasing RPCNFSDCOUNT to a higher value, this would become stable. I've increased it several times and apparently, after a while, the logs started appearing less times. The value is now on 32. After further investigating the issue, I've came across a different hang, despite the NFS messages still appear in the logs. Sometimes, the GFS2 FS simply hangs which causes both the NFS and the storage webserver to serve files. Both stay hang for a while and then they resume normal operations. This hangs leaves no trace on client side (also leaves no NFS ... not responding messages) and, on the storage side, the log system appears to be empty, even though the rsyslogd is running. The nodes connect themselves through a 10Gbps non-dedicated connection but I don't think this is an issue because the GFS2 hang is confirmed but connecting directly to the active storage server. I've been trying to solve this for a while now and I've tried different NFS configuration options, before I've found out the GFS2 FS is also hanging. The NFS mount is exported as such: /srv/data/ <ip_address>(rw,async,no_root_squash,no_all_squash,fsid=25) And the NFS client mounts with: mount -o "async,hard,intr,wsize=8192,rsize=8192" active.storage.vlan:/srv/data /srv/data After some tests, these were the configurations that yielded more performance to the cluster. I am desperate to find a solution for this as the cluster is already in production mode and I need to fix this so that this hangs won't happen in the future and I don't really know for sure what and how I should be benchmarking. What I can tell is that this is happening due to heavy loads as I have tested the cluster earlier and this problems weren't happening at all. Please tell me if you need me to provide configuration details of the cluster, and which do you want me to post. As last resort I can migrate the files to a different FS but I need some solid pointers on whether this will solve this problems as the volume size is extremely large at this point. The servers are being hosted by a third-party enterprise and I don't have physical access to them. Best regards. EDIT 1: The servers are physical servers and their specs are: Webservers: Intel Bi Xeon E5606 2x4 2.13GHz 24GB DDR3 Intel SSD 320 2 x 120GB Raid 1 Storage: Intel i5 3550 3.3GHz 16GB DDR3 12 x 2TB SATA Initially there was a VRack setup between the servers but we've upgraded one of the storage servers to have more RAM and it wasn't inside the VRack. They connect through a shared 10Gbps connection between them. Please note that it is the same connection that is used for public access. They use a single IP (using IP Failover) to connect between them and to allow for a graceful failover. NFS is therefore over a public connection and not under any private network (it was before the upgrade, were the problem still existed). The firewall was configured and tested thoroughly but I disabled it for a while to see if the problem still occurred, and it did. From my knowledge the hosting provider isn't blocking or limiting the connection between either the servers and the public domain (at least under a given bandwidth consumption threshold that hasn't been reached yet). Hope this helps figuring out the problem. EDIT 2: Relevant software versions: CentOS 2.6.32-279.9.1.el6.x86_64 nfs-utils-1.2.3-26.el6.x86_64 nfs-utils-lib-1.1.5-4.el6.x86_64 gfs2-utils-3.0.12.1-32.el6_3.1.x86_64 kmod-drbd84-8.4.2-1.el6_3.elrepo.x86_64 drbd84-utils-8.4.2-1.el6.elrepo.x86_64 DRBD configuration on storage servers: #/etc/drbd.d/storage.res resource storage { protocol C; on <server1 fqdn> { device /dev/drbd0; disk /dev/vg_storage/LV_replicated; address <server1 ip>:7788; meta-disk internal; } on <server2 fqdn> { device /dev/drbd0; disk /dev/vg_storage/LV_replicated; address <server2 ip>:7788; meta-disk internal; } } NFS Configuration in storage servers: #/etc/sysconfig/nfs RPCNFSDCOUNT=32 STATD_PORT=10002 STATD_OUTGOING_PORT=10003 MOUNTD_PORT=10004 RQUOTAD_PORT=10005 LOCKD_UDPPORT=30001 LOCKD_TCPPORT=30001 (can there be any conflict in using the same port for both LOCKD_UDPPORT and LOCKD_TCPPORT?) GFS2 configuration: # gfs2_tool gettune <mountpoint> incore_log_blocks = 1024 log_flush_secs = 60 quota_warn_period = 10 quota_quantum = 60 max_readahead = 262144 complain_secs = 10 statfs_slow = 0 quota_simul_sync = 64 statfs_quantum = 30 quota_scale = 1.0000 (1, 1) new_files_jdata = 0 Storage network environment: eth0 Link encap:Ethernet HWaddr <mac address> inet addr:<ip address> Bcast:<bcast address> Mask:<ip mask> inet6 addr: <ip address> Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:957025127 errors:0 dropped:0 overruns:0 frame:0 TX packets:1473338731 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2630984979622 (2.3 TiB) TX bytes:1648430431523 (1.4 TiB) eth0:0 Link encap:Ethernet HWaddr <mac address> inet addr:<ip failover address> Bcast:<bcast address> Mask:<ip mask> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 The IP addresses are statically assigned with the given network configurations: DEVICE="eth0" BOOTPROTO="static" HWADDR=<mac address> ONBOOT="yes" TYPE="Ethernet" IPADDR=<ip address> NETMASK=<net mask> and DEVICE="eth0:0" BOOTPROTO="static" HWADDR=<mac address> IPADDR=<ip failover> NETMASK=<net mask> ONBOOT="yes" BROADCAST=<bcast address> Hosts file to allow for a graceful NFS failover in conjunction with NFS option fsid=25 set on both storage servers: #/etc/hosts <storage ip failover address> active.storage.vlan <webserver ip failover address> active.service.vlan As you can see, packet errors are down to 0. I've also ran ping for a long time without any packet loss. MTU size is the normal 1500. As there is no VLan by now, this is the MTU used to communicate between servers. The webservers' network environment is similar. One thing I forgot to mention is that the storage servers handle ~200GB of new files each day through the NFS connection, which is a key point for me to think this is some kind of heavy load problem with either NFS or GFS2. If you need further configuration details please tell me. EDIT 3: Earlier today we had a major filesystem crash on the storage server. I couldn't get the details of the crash right away because the server stop responding. After the reboot, I noticed the filesystem was extremely slow, and I was not being able to serve a single file through either NFS or httpd, perhaps due to cache warming or so. Nevertheless, I've been monitoring the server closely and the following error came up in dmesg. The source of the problem is clearly GFS, which is waiting for a lock and ends up starving after a while. INFO: task nfsd:3029 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. nfsd D 0000000000000000 0 3029 2 0x00000080 ffff8803814f79e0 0000000000000046 0000000000000000 ffffffff8109213f ffff880434c5e148 ffff880624508d88 ffff8803814f7960 ffffffffa037253f ffff8803815c1098 ffff8803814f7fd8 000000000000fb88 ffff8803815c1098 Call Trace: [<ffffffff8109213f>] ? wake_up_bit+0x2f/0x40 [<ffffffffa037253f>] ? gfs2_holder_wake+0x1f/0x30 [gfs2] [<ffffffff814ff42e>] __mutex_lock_slowpath+0x13e/0x180 [<ffffffff814ff2cb>] mutex_lock+0x2b/0x50 [<ffffffffa0379f21>] gfs2_log_reserve+0x51/0x190 [gfs2] [<ffffffffa0390da2>] gfs2_trans_begin+0x112/0x1d0 [gfs2] [<ffffffffa0369b05>] ? gfs2_dir_check+0x35/0xe0 [gfs2] [<ffffffffa0377943>] gfs2_createi+0x1a3/0xaa0 [gfs2] [<ffffffff8121aab1>] ? avc_has_perm+0x71/0x90 [<ffffffffa0383d1e>] gfs2_create+0x7e/0x1a0 [gfs2] [<ffffffffa037783f>] ? gfs2_createi+0x9f/0xaa0 [gfs2] [<ffffffff81188cf4>] vfs_create+0xb4/0xe0 [<ffffffffa04217d6>] nfsd_create_v3+0x366/0x4c0 [nfsd] [<ffffffffa0429703>] nfsd3_proc_create+0x123/0x1b0 [nfsd] [<ffffffffa041a43e>] nfsd_dispatch+0xfe/0x240 [nfsd] [<ffffffffa025a5d4>] svc_process_common+0x344/0x640 [sunrpc] [<ffffffff810602a0>] ? default_wake_function+0x0/0x20 [<ffffffffa025ac10>] svc_process+0x110/0x160 [sunrpc] [<ffffffffa041ab62>] nfsd+0xc2/0x160 [nfsd] [<ffffffffa041aaa0>] ? nfsd+0x0/0x160 [nfsd] [<ffffffff81091de6>] kthread+0x96/0xa0 [<ffffffff8100c14a>] child_rip+0xa/0x20 [<ffffffff81091d50>] ? kthread+0x0/0xa0 [<ffffffff8100c140>] ? child_rip+0x0/0x20

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Active Directory and Apple's Workgroup Manager

- by qbn

I thought I'd share my experiences here. I work for a small business with only ~20 users. I wanted the ability to use managed client preferences to assign things like the software update server. Basically the ability to manage my Macs easily and in a native way. At first I tried the magic triangle solution, but I found this to be very complicated. Not only does it require a Mac OS X Server, but it gives you two points of failure. Additionally each Mac workstation must be bound to both servers. Eventually I sucked it up and went with the schema changes documented here. I was hesitant at first, because the instructions require a lot of manual work. However it was fairly basic and only took me about an hour and a half. Below you'll find the schema changes file that was a result of my work. I followed the instructions exactly and double checked everything, after six months of having this in place things have been running great. Too good to not share. I hope I save someone a couple of hours. # ================================================================== # # This file should be imported with the following command: # ldifde -i -u -f Apple AD Schema Changes.ldf -s server:port -b username domain password -j . -c "cn=Configuration,dc=X" #configurationNamingContext # LDIFDE.EXE from AD/AM V1.0 or above must be used. # This LDIF file should be imported into AD or AD/AM. It may not work for other directories. # # ================================================================== # ================================================================== # Attributes # ================================================================== # Attribute: apple-category dn: cn=apple-category,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.10.4 ldapDisplayName: apple-category attributeSyntax: 2.5.5.12 adminDescription: Category for the computer or neighborhood oMSyntax: 64 systemOnly: FALSE # Attribute: apple-computeralias dn: cn=apple-computeralias,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.20.3 ldapDisplayName: apple-computeralias attributeSyntax: 2.5.5.12 adminDescription: XML plist referring to a computer record oMSyntax: 64 systemOnly: FALSE # Attribute: apple-computer-list-groups dn: cn=apple-computer-list-groups,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.11.4 ldapDisplayName: apple-computer-list-groups attributeSyntax: 2.5.5.12 adminDescription: groups oMSyntax: 64 systemOnly: FALSE # Attribute: apple-computers dn: cn=apple-computers,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.11.3 ldapDisplayName: apple-computers attributeSyntax: 2.5.5.12 adminDescription: computers oMSyntax: 64 systemOnly: FALSE # Attribute: apple-data-stamp dn: cn=apple-data-stamp,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.12.2 ldapDisplayName: apple-data-stamp attributeSyntax: 2.5.5.5 adminDescription: data stamp oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-dns-domain dn: cn=apple-dns-domain,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.18.1 ldapDisplayName: apple-dns-domain attributeSyntax: 2.5.5.12 adminDescription: DNS domain oMSyntax: 64 systemOnly: FALSE # Attribute: apple-dnsname dn: cn=apple-dnsname,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.19.4 ldapDisplayName: apple-dnsname attributeSyntax: 2.5.5.12 adminDescription: DNS name oMSyntax: 64 systemOnly: FALSE # Attribute: apple-dns-nameserver dn: cn=apple-dns-nameserver,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.18.2 ldapDisplayName: apple-dns-nameserver attributeSyntax: 2.5.5.12 adminDescription: DNS name server list oMSyntax: 64 systemOnly: FALSE # Attribute: apple-group-homeowner dn: cn=apple-group-homeowner,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.14.2 ldapDisplayName: apple-group-homeowner attributeSyntax: 2.5.5.5 adminDescription: group home owner settings oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-group-homeurl dn: cn=apple-group-homeurl,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.14.1 ldapDisplayName: apple-group-homeurl attributeSyntax: 2.5.5.5 adminDescription: group home url oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-imhandle dn: cn=apple-imhandle,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.21 ldapDisplayName: apple-imhandle attributeSyntax: 2.5.5.12 adminDescription: IM handle (service:account name) oMSyntax: 64 systemOnly: FALSE # Attribute: apple-keyword dn: cn=apple-keyword,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.19 ldapDisplayName: apple-keyword attributeSyntax: 2.5.5.12 adminDescription: keywords oMSyntax: 64 systemOnly: FALSE # Attribute: apple-mcxflags dn: cn=apple-mcxflags,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.10 ldapDisplayName: apple-mcxflags attributeSyntax: 2.5.5.12 adminDescription: mcx flags oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-mcxsettings dn: cn=apple-mcxsettings,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.16 ldapDisplayName: apple-mcxsettings attributeSyntax: 2.5.5.12 adminDescription: mcx settings oMSyntax: 64 systemOnly: FALSE # Attribute: apple-neighborhoodalias dn: cn=apple-neighborhoodalias,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.20.2 ldapDisplayName: apple-neighborhoodalias attributeSyntax: 2.5.5.12 adminDescription: XML plist referring to another neighborhood record oMSyntax: 64 systemOnly: FALSE # Attribute: apple-networkview dn: cn=apple-networkview,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.10.3 ldapDisplayName: apple-networkview attributeSyntax: 2.5.5.12 adminDescription: Network view for the computer oMSyntax: 64 systemOnly: FALSE # Attribute: apple-nodepathxml dn: cn=apple-nodepathxml,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.20.1 ldapDisplayName: apple-nodepathxml attributeSyntax: 2.5.5.12 adminDescription: XML plist of directory node path oMSyntax: 64 systemOnly: FALSE # Attribute: apple-service-location dn: cn=apple-service-location,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.19.5 ldapDisplayName: apple-service-location attributeSyntax: 2.5.5.12 adminDescription: Service location oMSyntax: 64 systemOnly: FALSE # Attribute: apple-service-port dn: cn=apple-service-port,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.19.3 ldapDisplayName: apple-service-port attributeSyntax: 2.5.5.9 adminDescription: Service port number oMSyntax: 2 systemOnly: FALSE # Attribute: apple-service-type dn: cn=apple-service-type,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.19.1 ldapDisplayName: apple-service-type attributeSyntax: 2.5.5.5 adminDescription: type of service oMSyntax: 22 systemOnly: FALSE # Attribute: apple-service-url dn: cn=apple-service-url,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.19.2 ldapDisplayName: apple-service-url attributeSyntax: 2.5.5.5 adminDescription: URL of service oMSyntax: 22 systemOnly: FALSE # Attribute: apple-user-authenticationhint dn: cn=apple-user-authenticationhint,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.15 ldapDisplayName: apple-user-authenticationhint attributeSyntax: 2.5.5.12 adminDescription: password hint oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-class dn: cn=apple-user-class,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.7 ldapDisplayName: apple-user-class attributeSyntax: 2.5.5.5 adminDescription: user class oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-homequota dn: cn=apple-user-homequota,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.8 ldapDisplayName: apple-user-homequota attributeSyntax: 2.5.5.5 adminDescription: home directory quota oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-homesoftquota dn: cn=apple-user-homesoftquota,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.17 ldapDisplayName: apple-user-homesoftquota attributeSyntax: 2.5.5.5 adminDescription: home directory soft quota oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-homeurl dn: cn=apple-user-homeurl,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.6 ldapDisplayName: apple-user-homeurl attributeSyntax: 2.5.5.5 adminDescription: home directory URL oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-mailattribute dn: cn=apple-user-mailattribute,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.9 ldapDisplayName: apple-user-mailattribute attributeSyntax: 2.5.5.12 adminDescription: mail attribute oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-picture dn: cn=apple-user-picture,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.12 ldapDisplayName: apple-user-picture attributeSyntax: 2.5.5.12 adminDescription: picture oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-user-printattribute dn: cn=apple-user-printattribute,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.13 ldapDisplayName: apple-user-printattribute attributeSyntax: 2.5.5.12 adminDescription: print attribute oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-webloguri dn: cn=apple-webloguri,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.1.22 ldapDisplayName: apple-webloguri attributeSyntax: 2.5.5.12 adminDescription: Weblog URI oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: apple-xmlplist dn: cn=apple-xmlplist,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.17.1 ldapDisplayName: apple-xmlplist attributeSyntax: 2.5.5.12 adminDescription: XML plist data oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: ipHostNumber dn: cn=ipHostNumber,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.1.1.1.19 ldapDisplayName: ipHostNumber attributeSyntax: 2.5.5.5 adminDescription: IP address oMSyntax: 22 systemOnly: FALSE rangeUpper: 128 # Attribute: macAddress dn: cn=macAddress,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.1.1.1.22 ldapDisplayName: macAddress attributeSyntax: 2.5.5.5 adminDescription: MAC address oMSyntax: 22 systemOnly: FALSE rangeUpper: 128 # Attribute: mountDirectory dn: cn=apple-mountDirectory,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.8.1 ldapDisplayName: mountDirectory attributeSyntax: 2.5.5.12 adminDescription: mount path oMSyntax: 64 isSingleValued: TRUE systemOnly: FALSE # Attribute: mountDumpFrequency dn: cn=apple-mountDumpFrequency,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.8.4 ldapDisplayName: mountDumpFrequency attributeSyntax: 2.5.5.5 adminDescription: mount dump frequency oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: mountOption dn: cn=apple-mountOption,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.8.3 ldapDisplayName: mountOption attributeSyntax: 2.5.5.5 adminDescription: mount options oMSyntax: 22 systemOnly: FALSE # Attribute: mountPassNo dn: cn=apple-mountPassNo,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.8.5 ldapDisplayName: mountPassNo attributeSyntax: 2.5.5.5 adminDescription: mount passno oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: mountType dn: cn=apple-mountType,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.63.1000.1.1.1.8.2 ldapDisplayName: mountType attributeSyntax: 2.5.5.5 adminDescription: mount VFS type oMSyntax: 22 isSingleValued: TRUE systemOnly: FALSE # Attribute: ttl dn: cn=ttl,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: attributeSchema attributeId: 1.3.6.1.4.1.250.1.60 ldapDisplayName: ttl attributeSyntax: 2.5.5.9 oMSyntax: 2 isSingleValued: TRUE systemOnly: FALSE dn: changetype: modify add: schemaUpdateNow schemaUpdateNow: 1 - # ================================================================== # Classes # ================================================================== # Class: apple-computer dn: cn=apple-computer,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.10 ldapDisplayName: apple-computer adminDescription: computer objectClassCategory: 3 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-category mayContain: 1.3.6.1.4.1.63.1000.1.1.1.10.4 # mayContain: apple-computer-list-groups mayContain: 1.3.6.1.4.1.63.1000.1.1.1.11.4 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-mcxflags mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.10 # mayContain: apple-mcxsettings mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.16 # mayContain: apple-networkview mayContain: 1.3.6.1.4.1.63.1000.1.1.1.10.3 # mayContain: apple-service-url mayContain: 1.3.6.1.4.1.63.1000.1.1.1.19.2 # mayContain: apple-xmlplist mayContain: 1.3.6.1.4.1.63.1000.1.1.1.17.1 # mayContain: macAddress mayContain: 1.3.6.1.1.1.1.22 # mayContain: ttl mayContain: 1.3.6.1.4.1.250.1.60 # Class: apple-computer-list dn: cn=apple-computer-list,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.11 ldapDisplayName: apple-computer-list adminDescription: computer list objectClassCategory: 1 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-computer-list-groups mayContain: 1.3.6.1.4.1.63.1000.1.1.1.11.4 # mayContain: apple-computers mayContain: 1.3.6.1.4.1.63.1000.1.1.1.11.3 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-mcxflags mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.10 # mayContain: apple-mcxsettings mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.16 possSuperiors: organizationalUnit possSuperiors: container # Class: apple-configuration dn: cn=apple-configuration,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.12 ldapDisplayName: apple-configuration adminDescription: configuration objectClassCategory: 3 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-data-stamp mayContain: 1.3.6.1.4.1.63.1000.1.1.1.12.2 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-xmlplist mayContain: 1.3.6.1.4.1.63.1000.1.1.1.17.1 # mayContain: ttl mayContain: 1.3.6.1.4.1.250.1.60 possSuperiors: organizationalUnit possSuperiors: container # Class: apple-group dn: cn=apple-group,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.14 ldapDisplayName: apple-group adminDescription: group account objectClassCategory: 3 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-group-homeowner mayContain: 1.3.6.1.4.1.63.1000.1.1.1.14.2 # mayContain: apple-group-homeurl mayContain: 1.3.6.1.4.1.63.1000.1.1.1.14.1 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-mcxflags mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.10 # mayContain: apple-mcxsettings mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.16 # mayContain: apple-user-picture mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.12 # mayContain: ttl mayContain: 1.3.6.1.4.1.250.1.60 # Class: apple-location dn: cn=apple-location,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.18 ldapDisplayName: apple-location objectClassCategory: 1 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-dns-domain mayContain: 1.3.6.1.4.1.63.1000.1.1.1.18.1 # mayContain: apple-dns-nameserver mayContain: 1.3.6.1.4.1.63.1000.1.1.1.18.2 possSuperiors: organizationalUnit possSuperiors: container # Class: apple-neighborhood dn: cn=apple-neighborhood,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.20 ldapDisplayName: apple-neighborhood objectClassCategory: 1 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-category mayContain: 1.3.6.1.4.1.63.1000.1.1.1.10.4 # mayContain: apple-computeralias mayContain: 1.3.6.1.4.1.63.1000.1.1.1.20.3 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-neighborhoodalias mayContain: 1.3.6.1.4.1.63.1000.1.1.1.20.2 # mayContain: apple-nodepathxml mayContain: 1.3.6.1.4.1.63.1000.1.1.1.20.1 # mayContain: apple-xmlplist mayContain: 1.3.6.1.4.1.63.1000.1.1.1.17.1 # mayContain: ttl mayContain: 1.3.6.1.4.1.250.1.60 possSuperiors: 2.5.6.5 possSuperiors: container # Class: apple-serverassistant-config dn: cn=apple-serverassistant-config,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.17 ldapDisplayName: apple-serverassistant-config objectClassCategory: 1 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-xmlplist mayContain: 1.3.6.1.4.1.63.1000.1.1.1.17.1 possSuperiors: organizationalUnit possSuperiors: container # Class: apple-service dn: cn=apple-service,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.19 ldapDisplayName: apple-service objectClassCategory: 1 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mustContain: apple-service-type mustContain: 1.3.6.1.4.1.63.1000.1.1.1.19.1 # mayContain: apple-dnsname mayContain: 1.3.6.1.4.1.63.1000.1.1.1.19.4 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-service-location mayContain: 1.3.6.1.4.1.63.1000.1.1.1.19.5 # mayContain: apple-service-port mayContain: 1.3.6.1.4.1.63.1000.1.1.1.19.3 # mayContain: apple-service-url mayContain: 1.3.6.1.4.1.63.1000.1.1.1.19.2 # mayContain: ipHostNumber mayContain: 1.3.6.1.1.1.1.19 possSuperiors: organizationalUnit possSuperiors: container # Class: apple-user dn: cn=apple-user,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.1 ldapDisplayName: apple-user adminDescription: apple user account objectClassCategory: 3 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: apple-imhandle mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.21 # mayContain: apple-keyword mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.19 # mayContain: apple-mcxflags mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.10 # mayContain: apple-mcxsettings mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.16 # mayContain: apple-user-authenticationhint mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.15 # mayContain: apple-user-class mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.7 # mayContain: apple-user-homequota mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.8 # mayContain: apple-user-homesoftquota mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.17 # mayContain: apple-user-homeurl mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.6 # mayContain: apple-user-mailattribute mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.9 # mayContain: apple-user-picture mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.12 # mayContain: apple-user-printattribute mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.13 # mayContain: apple-webloguri mayContain: 1.3.6.1.4.1.63.1000.1.1.1.1.22 # Class: mount dn: cn=apple-mount,cn=Schema,cn=Configuration,dc=X changetype: ntdsschemaadd objectClass: classSchema governsID: 1.3.6.1.4.1.63.1000.1.1.2.8 ldapDisplayName: mount objectClassCategory: 1 # subclassOf: top subclassOf: 2.5.6.0 # rdnAttId: cn rdnAttId: 2.5.4.3 # mayContain: mountDirectory mayContain: 1.3.6.1.4.1.63.1000.1.1.1.8.1 # mayContain: mountDumpFrequency mayContain: 1.3.6.1.4.1.63.1000.1.1.1.8.4 # mayContain: mountOption mayContain: 1.3.6.1.4.1.63.1000.1.1.1.8.3 # mayContain: mountPassNo mayContain: 1.3.6.1.4.1.63.1000.1.1.1.8.5 # mayContain: mountType mayContain: 1.3.6.1.4.1.63.1000.1.1.1.8.2 possSuperiors: 2.5.6.5 possSuperiors: container dn: changetype: modify add: schemaUpdateNow schemaUpdateNow: 1 - # ================================================================== # Updating present elements # ================================================================== # Add the new class to the user object dn: CN=User,CN=Schema,CN=Configuration,DC=X changetype: modify add: auxiliaryClass auxiliaryClass: apple-user - # Add the new class to the computer object dn: CN=Computer,CN=Schema,CN=Configuration,DC=X changetype: modify add: auxiliaryClass auxiliaryClass: apple-computer - # Add the new class to the group object dn: CN=Group,CN=Schema,CN=Configuration,DC=X changetype: modify add: auxiliaryClass auxiliaryClass: apple-group - # Add the new class to the configuration object dn: CN=Configuration,CN=Schema,CN=Configuration,DC=X changetype: modify add: auxiliaryClass auxiliaryClass: apple-configuration -

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PC hangs and reboots from time to time

- by Bevor

Hello, I have a very strange problem: Since I have my new PC, I have always had problems with it. From time to time the computer freezes for some seconds and suddendly reboots by itself. I've had this problem since Ubuntu 9.10. The same with 10.04 and 10.10. That's why I don't think it's a software failure because the problem persist too long. It doesn't have anything to do with what I'm doing at this time. Sometimes I listen to music, sometimes I only use Firefox, sometimes I'm running 2 or 3 VMs, sometimes I watch DVD. So it's not isolatable. I could freeze once a day or once a week. I put the PC to the vendor twice(!). The first time they changed my power supply but the problem persisted. The second time they told me that they made some heavy performance tests 50 hours long but they didn't find anything. (How can that be that I have daily freezes with normal usage). The vendor didn't check the hard discs because they used their own disc with Windows. (So they never checked the Linux installation). Yesterday I made some intensive hard disc scans with "SMART" but no errors were found. I ran memtest for 3 times but no errors found. I already had this problem in my old flat, so I doubt that I has something to do with current fluctuation. I already tried another electrical socket and changed to connector strip but the problem persists. At the moment I removed 2 of the RAMs (2x 2GB). In all I have 6GB, 2x2GB and 2x1GB. Could this difference maybe be a problem? Here is a list of my components. I hope that anybody find something I didn't think about yet. And here a list of my components: 1x AMD Phenom II X4 965 Black Edition, 3,4Ghz, Quad Core, S-AM3, Boxed 2x DDR3-RAM 2048MB, PC3-1333 Mhz, CL9, Kingston ValueRAM 2x DDR3-RAM 1024MB, PC3-1333 Mhz, CL9, Kingston ValueRAM 2x SATA II Seagate Barracuda 7200.12, 1TB 32MB Cache = RAID 1 1x DVD ROM SATA LG DH16NSR, 16x/52x 1x DVD-+R/-+RW SATA LG GH-22NS50 1x Cardreader 18in1 1x PCI-E 2.0 GeForce GTS 250, Retail, 1024MB 1x Power Supply ATX 400 Watt, CHIEFTEC APS-400S, 80 Plus 1x Network card PCI Intel PRO/1000GT 10/100/1000 MBit 1x Mainboard Socket-AM3 ASUS M4A79XTD EVO, ATX lshw: description: Desktop Computer product: System Product Name vendor: System manufacturer version: System Version serial: System Serial Number width: 64 bits capabilities: smbios-2.5 dmi-2.5 vsyscall64 vsyscall32 configuration: boot=normal chassis=desktop uuid=80E4001E-8C00-002C-AA59-E0CB4EBAC29A *-core description: Motherboard product: M4A79XTD EVO vendor: ASUSTeK Computer INC. physical id: 0 version: Rev X.0X serial: MT709CK11101196 slot: To Be Filled By O.E.M. *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: 0704 (11/25/2009) size: 64KiB capacity: 960KiB capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification *-cpu description: CPU product: AMD Phenom(tm) II X4 965 Processor vendor: Advanced Micro Devices [AMD] physical id: 4 bus info: cpu@0 version: AMD Phenom(tm) II X4 965 Processor serial: To Be Filled By O.E.M. slot: AM3 size: 800MHz capacity: 3400MHz width: 64 bits clock: 200MHz capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp x86-64 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save cpufreq *-cache:0 description: L1 cache physical id: 5 slot: L1-Cache size: 512KiB capacity: 512KiB capabilities: pipeline-burst internal varies data *-cache:1 description: L2 cache physical id: 6 slot: L2-Cache size: 2MiB capacity: 2MiB capabilities: pipeline-burst internal varies unified *-cache:2 description: L3 cache physical id: 7 slot: L3-Cache size: 6MiB capacity: 6MiB capabilities: pipeline-burst internal varies unified *-memory description: System Memory physical id: 36 slot: System board or motherboard size: 2GiB *-bank:0 description: DIMM Synchronous 1333 MHz (0.8 ns) product: ModulePartNumber00 vendor: Manufacturer00 physical id: 0 serial: SerNum00 slot: DIMM0 size: 1GiB width: 64 bits clock: 1333MHz (0.8ns) *-bank:1 description: DIMM Synchronous 1333 MHz (0.8 ns) product: ModulePartNumber01 vendor: Manufacturer01 physical id: 1 serial: SerNum01 slot: DIMM1 size: 1GiB width: 64 bits clock: 1333MHz (0.8ns) *-bank:2 description: DIMM [empty] product: ModulePartNumber02 vendor: Manufacturer02 physical id: 2 serial: SerNum02 slot: DIMM2 *-bank:3 description: DIMM [empty] product: ModulePartNumber03 vendor: Manufacturer03 physical id: 3 serial: SerNum03 slot: DIMM3 *-pci:0 description: Host bridge product: RD780 Northbridge only dual slot PCI-e_GFX and HT1 K8 part vendor: ATI Technologies Inc physical id: 100 bus info: pci@0000:00:00.0 version: 00 width: 32 bits clock: 66MHz *-pci:0 description: PCI bridge product: RD790 PCI to PCI bridge (external gfx0 port A) vendor: ATI Technologies Inc physical id: 2 bus info: pci@0000:00:02.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:40 ioport:a000(size=4096) memory:f8000000-fbbfffff ioport:d0000000(size=268435456) *-display description: VGA compatible controller product: G92 [GeForce GTS 250] vendor: nVidia Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a2 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:18 memory:fa000000-faffffff memory:d0000000-dfffffff memory:f8000000-f9ffffff ioport:ac00(size=128) memory:fbbe0000-fbbfffff *-pci:1 description: PCI bridge product: RD790 PCI to PCI bridge (PCI express gpp port C) vendor: ATI Technologies Inc physical id: 6 bus info: pci@0000:00:06.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:41 ioport:b000(size=4096) memory:fbc00000-fbcfffff ioport:f6f00000(size=1048576) *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: eth0 version: 03 serial: e0:cb:4e:ba:c2:9a size: 10MB/s capacity: 1GB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10MB/s resources: irq:45 ioport:b800(size=256) memory:f6fff000-f6ffffff memory:f6ff8000-f6ffbfff memory:fbcf0000-fbcfffff *-pci:2 description: PCI bridge product: RD790 PCI to PCI bridge (PCI express gpp port D) vendor: ATI Technologies Inc physical id: 7 bus info: pci@0000:00:07.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:42 ioport:c000(size=4096) memory:fbd00000-fbdfffff *-firewire description: FireWire (IEEE 1394) product: VT6315 Series Firewire Controller vendor: VIA Technologies, Inc. physical id: 0 bus info: pci@0000:03:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress ohci bus_master cap_list configuration: driver=firewire_ohci latency=0 resources: irq:19 memory:fbdff800-fbdfffff ioport:c800(size=256) *-pci:3 description: PCI bridge product: RD790 PCI to PCI bridge (PCI express gpp port E) vendor: ATI Technologies Inc physical id: 9 bus info: pci@0000:00:09.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:43 ioport:d000(size=4096) memory:fbe00000-fbefffff *-ide description: IDE interface product: 88SE6121 SATA II Controller vendor: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:04:00.0 version: b2 width: 32 bits clock: 33MHz capabilities: ide pm msi pciexpress bus_master cap_list configuration: driver=pata_marvell latency=0 resources: irq:17 ioport:dc00(size=8) ioport:d880(size=4) ioport:d800(size=8) ioport:d480(size=4) ioport:d400(size=16) memory:fbeffc00-fbefffff *-storage description: SATA controller product: SB700/SB800 SATA Controller [IDE mode] vendor: ATI Technologies Inc physical id: 11 bus info: pci@0000:00:11.0 logical name: scsi0 logical name: scsi2 version: 00 width: 32 bits clock: 66MHz capabilities: storage msi ahci_1.0 bus_master cap_list emulated configuration: driver=ahci latency=64 resources: irq:44 ioport:9000(size=8) ioport:8000(size=4) ioport:7000(size=8) ioport:6000(size=4) ioport:5000(size=16) memory:f7fffc00-f7ffffff *-disk:0 description: ATA Disk product: ST31000528AS vendor: Seagate physical id: 0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: CC38 serial: 9VP3WD9Z size: 931GiB (1TB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=000ad206 *-volume:0 UNCLAIMED description: Linux filesystem partition vendor: Linux physical id: 1 bus info: scsi@0:0.0.0,1 version: 1.0 serial: 81839235-21ea-4853-90a4-814779f49000 size: 972MiB capacity: 972MiB capabilities: primary ext2 initialized configuration: filesystem=ext2 modified=2010-12-06 18:32:58 mounted=2010-11-01 07:05:10 state=unknown *-volume:1 UNCLAIMED description: Linux swap volume physical id: 2 bus info: scsi@0:0.0.0,2 version: 1 serial: 22b881d5-6f5c-484d-94e8-e231896fa91b size: 486MiB capacity: 486MiB capabilities: primary nofs swap initialized configuration: filesystem=swap pagesize=4096 *-volume:2 UNCLAIMED description: EXT3 volume vendor: Linux physical id: 3 bus info: scsi@0:0.0.0,3 version: 1.0 serial: ad5b0daf-11e8-4f8f-8598-4e89da9c0d84 size: 47GiB capacity: 47GiB capabilities: primary journaled extended_attributes large_files recover ext3 ext2 initialized configuration: created=2010-02-16 20:42:29 filesystem=ext3 modified=2010-11-29 17:02:34 mounted=2010-12-06 18:32:50 state=clean *-volume:3 UNCLAIMED description: Extended partition physical id: 4 bus info: scsi@0:0.0.0,4 size: 882GiB capacity: 882GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume UNCLAIMED description: Linux filesystem partition physical id: 5 capacity: 882GiB *-disk:1 description: ATA Disk product: ST31000528AS vendor: Seagate physical id: 1 bus info: scsi@2:0.0.0 logical name: /dev/sdb version: CC38 serial: 9VP3SCPF size: 931GiB (1TB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=000ad206 *-volume:0 UNCLAIMED description: Linux filesystem partition vendor: Linux physical id: 1 bus info: scsi@2:0.0.0,1 version: 1.0 serial: 81839235-21ea-4853-90a4-814779f49000 size: 972MiB capacity: 972MiB capabilities: primary ext2 initialized configuration: filesystem=ext2 modified=2010-12-06 18:32:58 mounted=2010-11-01 07:05:10 state=unknown *-volume:1 UNCLAIMED description: Linux swap volume physical id: 2 bus info: scsi@2:0.0.0,2 version: 1 serial: 22b881d5-6f5c-484d-94e8-e231896fa91b size: 486MiB capacity: 486MiB capabilities: primary nofs swap initialized configuration: filesystem=swap pagesize=4096 *-volume:2 UNCLAIMED description: EXT3 volume vendor: Linux physical id: 3 bus info: scsi@2:0.0.0,3 version: 1.0 serial: ad5b0daf-11e8-4f8f-8598-4e89da9c0d84 size: 47GiB capacity: 47GiB capabilities: primary journaled extended_attributes large_files recover ext3 ext2 initialized configuration: created=2010-02-16 20:42:29 filesystem=ext3 modified=2010-11-29 17:02:34 mounted=2010-12-06 18:32:50 state=clean *-volume:3 UNCLAIMED description: Extended partition physical id: 4 bus info: scsi@2:0.0.0,4 size: 882GiB capacity: 882GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume UNCLAIMED description: Linux filesystem partition physical id: 5 capacity: 882GiB *-usb:0 description: USB Controller product: SB700/SB800 USB OHCI0 Controller vendor: ATI Technologies Inc physical id: 12 bus info: pci@0000:00:12.0 version: 00 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:16 memory:f7ffd000-f7ffdfff *-usb:1 description: USB Controller product: SB700 USB OHCI1 Controller vendor: ATI Technologies Inc physical id: 12.1 bus info: pci@0000:00:12.1 version: 00 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:16 memory:f7ffe000-f7ffefff *-usb:2 description: USB Controller product: SB700/SB800 USB EHCI Controller vendor: ATI Technologies Inc physical id: 12.2 bus info: pci@0000:00:12.2 version: 00 width: 32 bits clock: 66MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci_hcd latency=64 resources: irq:17 memory:f7fff800-f7fff8ff *-usb:3 description: USB Controller product: SB700/SB800 USB OHCI0 Controller vendor: ATI Technologies Inc physical id: 13 bus info: pci@0000:00:13.0 version: 00 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:18 memory:f7ffb000-f7ffbfff *-usb:4 description: USB Controller product: SB700 USB OHCI1 Controller vendor: ATI Technologies Inc physical id: 13.1 bus info: pci@0000:00:13.1 version: 00 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:18 memory:f7ffc000-f7ffcfff *-usb:5 description: USB Controller product: SB700/SB800 USB EHCI Controller vendor: ATI Technologies Inc physical id: 13.2 bus info: pci@0000:00:13.2 version: 00 width: 32 bits clock: 66MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci_hcd latency=64 resources: irq:19 memory:f7fff400-f7fff4ff *-serial UNCLAIMED description: SMBus product: SBx00 SMBus Controller vendor: ATI Technologies Inc physical id: 14 bus info: pci@0000:00:14.0 version: 3c width: 32 bits clock: 66MHz capabilities: ht cap_list configuration: latency=0 *-ide description: IDE interface product: SB700/SB800 IDE Controller vendor: ATI Technologies Inc physical id: 14.1 bus info: pci@0000:00:14.1 logical name: scsi5 version: 00 width: 32 bits clock: 66MHz capabilities: ide msi bus_master cap_list emulated configuration: driver=pata_atiixp latency=64 resources: irq:16 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:ff00(size=16) *-cdrom:0 description: DVD reader product: DVDROM DH16NS30 vendor: HL-DT-ST physical id: 0.0.0 bus info: scsi@5:0.0.0 logical name: /dev/cdrom1 logical name: /dev/dvd1 logical name: /dev/scd0 logical name: /dev/sr0 version: 1.00 capabilities: removable audio dvd configuration: ansiversion=5 status=nodisc *-cdrom:1 description: DVD-RAM writer product: DVDRAM GH22NS50 vendor: HL-DT-ST physical id: 0.1.0 bus info: scsi@5:0.1.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/scd1 logical name: /dev/sr1 version: TN02 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=nodisc *-multimedia description: Audio device product: SBx00 Azalia (Intel HDA) vendor: ATI Technologies Inc physical id: 14.2 bus info: pci@0000:00:14.2 version: 00 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: driver=HDA Intel latency=64 resources: irq:16 memory:f7ff4000-f7ff7fff *-isa description: ISA bridge product: SB700/SB800 LPC host controller vendor: ATI Technologies Inc physical id: 14.3 bus info: pci@0000:00:14.3 version: 00 width: 32 bits clock: 66MHz capabilities: isa bus_master configuration: latency=0 *-pci:4 description: PCI bridge product: SBx00 PCI to PCI Bridge vendor: ATI Technologies Inc physical id: 14.4 bus info: pci@0000:00:14.4 version: 00 width: 32 bits clock: 66MHz capabilities: pci subtractive_decode bus_master resources: ioport:e000(size=4096) memory:fbf00000-fbffffff *-network description: Ethernet interface product: 82541PI Gigabit Ethernet Controller vendor: Intel Corporation physical id: 5 bus info: pci@0000:05:05.0 logical name: eth1 version: 05 serial: 00:1b:21:56:f3:60 size: 100MB/s capacity: 1GB/s width: 32 bits clock: 66MHz capabilities: pm pcix bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.21-k6-NAPI duplex=full firmware=N/A ip=192.168.1.2 latency=64 link=yes mingnt=255 multicast=yes port=twisted pair speed=100MB/s resources: irq:20 memory:fbfe0000-fbffffff memory:fbfc0000-fbfdffff ioport:ec00(size=64) memory:fbfa0000-fbfbffff *-usb:6 description: USB Controller product: SB700/SB800 USB OHCI2 Controller vendor: ATI Technologies Inc physical id: 14.5 bus info: pci@0000:00:14.5 version: 00 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:18 memory:f7ffa000-f7ffafff *-pci:1 description: Host bridge product: Family 10h Processor HyperTransport Configuration vendor: Advanced Micro Devices [AMD] physical id: 101 bus info: pci@0000:00:18.0 version: 00 width: 32 bits clock: 33MHz *-pci:2 description: Host bridge product: Family 10h Processor Address Map vendor: Advanced Micro Devices [AMD] physical id: 102 bus info: pci@0000:00:18.1 version: 00 width: 32 bits clock: 33MHz *-pci:3 description: Host bridge product: Family 10h Processor DRAM Controller vendor: Advanced Micro Devices [AMD] physical id: 103 bus info: pci@0000:00:18.2 version: 00 width: 32 bits clock: 33MHz *-pci:4 description: Host bridge product: Family 10h Processor Miscellaneous Control vendor: Advanced Micro Devices [AMD] physical id: 104 bus info: pci@0000:00:18.3 version: 00 width: 32 bits clock: 33MHz configuration: driver=k10temp resources: irq:0 *-pci:5 description: Host bridge product: Family 10h Processor Link Control vendor: Advanced Micro Devices [AMD] physical id: 105 bus info: pci@0000:00:18.4 version: 00 width: 32 bits clock: 33MHz *-scsi physical id: 1 bus info: usb@2:3 logical name: scsi8 capabilities: emulated scsi-host configuration: driver=usb-storage *-disk:0 description: SCSI Disk physical id: 0.0.0 bus info: scsi@8:0.0.0 logical name: /dev/sdc *-disk:1 description: SCSI Disk physical id: 0.0.1 bus info: scsi@8:0.0.1 logical name: /dev/sdd *-disk:2 description: SCSI Disk physical id: 0.0.2 bus info: scsi@8:0.0.2 logical name: /dev/sde *-disk:3 description: SCSI Disk physical id: 0.0.3 bus info: scsi@8:0.0.3 logical name: /dev/sdf *-network DISABLED description: Ethernet interface physical id: 1 logical name: vboxnet0 serial: 0a:00:27:00:00:00 capabilities: ethernet physical configuration: broadcast=yes multicast=yes

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Marking Current Location on Map, Android

- by deewangan

Hi every one, i followed some tutorials to create an application that shows the current position of the user on the map with a marking. but for some reasons i can't get to work the marking part? the other parts works well, but whenever i add the marking code the application crashes. i hope someone could help me.here is the code: public class LocationActivity extends MapActivity { /** Called when the activity is first created. */ private MapView mapView; private LocationManager lm; private LocationListener ll; private MapController mc; GeoPoint p = null; Drawable defaultMarker = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mapView = (MapView)findViewById(R.id.mapView); //show zoom in/out buttons mapView.setBuiltInZoomControls(true); //Standard view of the map(map/sat) mapView.setSatellite(false); //get controller of the map for zooming in/out mc = mapView.getController(); // Zoom Level mc.setZoom(18); MyLocationOverlay myLocationOverlay = new MyLocationOverlay(); List<Overlay> list = mapView.getOverlays(); list.add(myLocationOverlay); lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); ll = new MyLocationListener(); lm.requestLocationUpdates( LocationManager.GPS_PROVIDER, 0, 0, ll); //Get the current location in start-up GeoPoint initGeoPoint = new GeoPoint( (int)(lm.getLastKnownLocation( LocationManager.GPS_PROVIDER) .getLatitude()*1000000), (int)(lm.getLastKnownLocation( LocationManager.GPS_PROVIDER) .getLongitude()*1000000)); mc.animateTo(initGeoPoint); } protected class MyLocationOverlay extends com.google.android.maps.Overlay { @Override public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) { Paint paint = new Paint(); super.draw(canvas, mapView, shadow); // Converts lat/lng-Point to OUR coordinates on the screen. Point myScreenCoords = new Point(); mapView.getProjection().toPixels(p, myScreenCoords); paint.setStrokeWidth(1); paint.setARGB(255, 255, 255, 255); paint.setStyle(Paint.Style.STROKE); Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.push); canvas.drawBitmap(bmp, myScreenCoords.x, myScreenCoords.y, paint); canvas.drawText("I am here...", myScreenCoords.x, myScreenCoords.y, paint); return true; } } private class MyLocationListener implements LocationListener{ public void onLocationChanged(Location argLocation) { // TODO Auto-generated method stub GeoPoint myGeoPoint = new GeoPoint( (int)(argLocation.getLatitude()*1000000), (int)(argLocation.getLongitude()*1000000)); /* * it will show a message on * location change Toast.makeText(getBaseContext(), "New location latitude [" +argLocation.getLatitude() + "] longitude [" + argLocation.getLongitude()+"]", Toast.LENGTH_SHORT).show(); */ mc.animateTo(myGeoPoint); } public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } } protected boolean isRouteDisplayed() { return false; } } here is the logcat: 01-19 05:31:43.011: DEBUG/AndroidRuntime(759): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<< 01-19 05:31:43.011: DEBUG/AndroidRuntime(759): CheckJNI is ON 01-19 05:31:43.411: DEBUG/AndroidRuntime(759): --- registering native functions --- 01-19 05:31:43.431: INFO/jdwp(759): received file descriptor 19 from ADB 01-19 05:31:43.431: INFO/jdwp(759): Ignoring second debugger -- accepting and dropping 01-19 05:31:44.531: INFO/ActivityManager(583): Starting activity: Intent { flg=0x10000000 cmp=pro.googlemapp/.LocationActivity } 01-19 05:31:44.641: DEBUG/AndroidRuntime(759): Shutting down VM 01-19 05:31:44.641: DEBUG/dalvikvm(759): DestroyJavaVM waiting for non-daemon threads to exit 01-19 05:31:44.641: DEBUG/dalvikvm(759): DestroyJavaVM shutting VM down 01-19 05:31:44.641: DEBUG/dalvikvm(759): HeapWorker thread shutting down 01-19 05:31:44.651: DEBUG/dalvikvm(759): HeapWorker thread has shut down 01-19 05:31:44.651: DEBUG/jdwp(759): JDWP shutting down net... 01-19 05:31:44.651: DEBUG/jdwp(759): +++ peer disconnected 01-19 05:31:44.651: INFO/dalvikvm(759): Debugger has detached; object registry had 1 entries 01-19 05:31:44.661: DEBUG/dalvikvm(759): VM cleaning up 01-19 05:31:44.681: INFO/ActivityManager(583): Start proc pro.googlemapp for activity pro.googlemapp/.LocationActivity: pid=770 uid=10025 gids={3003} 01-19 05:31:44.761: DEBUG/dalvikvm(759): LinearAlloc 0x0 used 676436 of 4194304 (16%) 01-19 05:31:44.801: INFO/jdwp(770): received file descriptor 20 from ADB 01-19 05:31:44.822: INFO/dalvikvm(770): ignoring registerObject request in thread=3 01-19 05:31:44.851: INFO/jdwp(770): Ignoring second debugger -- accepting and dropping 01-19 05:31:44.851: ERROR/jdwp(770): Failed writing handshake bytes: Broken pipe (-1 of 14) 01-19 05:31:44.851: INFO/dalvikvm(770): Debugger has detached; object registry had 0 entries 01-19 05:31:45.320: ERROR/ActivityThread(770): Failed to find provider info for com.google.settings 01-19 05:31:45.320: ERROR/ActivityThread(770): Failed to find provider info for com.google.settings 01-19 05:31:45.340: ERROR/ActivityThread(770): Failed to find provider info for com.google.settings 01-19 05:31:45.781: DEBUG/LocationManager(770): Constructor: service = android.location.ILocationManager$Stub$Proxy@4379d9f0 01-19 05:31:45.791: WARN/GpsLocationProvider(583): Duplicate add listener for uid 10025 01-19 05:31:45.791: DEBUG/GpsLocationProvider(583): setMinTime 0 01-19 05:31:45.791: DEBUG/GpsLocationProvider(583): startNavigating 01-19 05:31:45.831: INFO/jdwp(770): received file descriptor 27 from ADB 01-19 05:31:46.001: INFO/MapActivity(770): Handling network change notification:CONNECTED 01-19 05:31:46.001: ERROR/MapActivity(770): Couldn't get connection factory client 01-19 05:31:46.451: DEBUG/dalvikvm(770): GC freed 4539 objects / 298952 bytes in 118ms 01-19 05:31:46.470: DEBUG/AndroidRuntime(770): Shutting down VM 01-19 05:31:46.470: WARN/dalvikvm(770): threadid=3: thread exiting with uncaught exception (group=0x4001aa28) 01-19 05:31:46.481: ERROR/AndroidRuntime(770): Uncaught handler: thread main exiting due to uncaught exception 01-19 05:31:46.541: ERROR/AndroidRuntime(770): java.lang.NullPointerException 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.google.android.maps.PixelConverter.toPixels(PixelConverter.java:58) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.google.android.maps.PixelConverter.toPixels(PixelConverter.java:48) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at pro.googlemapp.LocationActivity$MyLocationOverlay.draw(LocationActivity.java:101) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.google.android.maps.OverlayBundle.draw(OverlayBundle.java:42) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.google.android.maps.MapView.onDraw(MapView.java:476) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.View.draw(View.java:6274) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.drawChild(ViewGroup.java:1526) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1256) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.drawChild(ViewGroup.java:1524) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1256) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.View.draw(View.java:6277) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.widget.FrameLayout.draw(FrameLayout.java:352) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.drawChild(ViewGroup.java:1526) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1256) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.drawChild(ViewGroup.java:1524) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1256) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.View.draw(View.java:6277) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.widget.FrameLayout.draw(FrameLayout.java:352) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1883) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewRoot.draw(ViewRoot.java:1332) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewRoot.performTraversals(ViewRoot.java:1097) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.view.ViewRoot.handleMessage(ViewRoot.java:1613) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.os.Handler.dispatchMessage(Handler.java:99) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.os.Looper.loop(Looper.java:123) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at android.app.ActivityThread.main(ActivityThread.java:4203) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at java.lang.reflect.Method.invokeNative(Native Method) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at java.lang.reflect.Method.invoke(Method.java:521) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 01-19 05:31:46.541: ERROR/AndroidRuntime(770): at dalvik.system.NativeStart.main(Native Method) 01-19 05:31:46.551: INFO/Process(583): Sending signal. PID: 770 SIG: 3 01-19 05:31:46.581: INFO/dalvikvm(770): threadid=7: reacting to signal 3 01-19 05:31:46.661: INFO/dalvikvm(770): Wrote stack trace to '/data/anr/traces.txt' 01-19 05:31:46.871: INFO/ARMAssembler(583): generated scanline__00000077:03515104_00000000_00000000 [ 27 ipp] (41 ins) at [0x2c69c8:0x2c6a6c] in 973448 ns 01-19 05:31:46.911: INFO/ARMAssembler(583): generated scanline__00000077:03515104_00001001_00000000 [ 64 ipp] (84 ins) at [0x2c6a70:0x2c6bc0] in 1985378 ns 01-19 05:31:49.881: INFO/Process(770): Sending signal. PID: 770 SIG: 9 01-19 05:31:49.931: INFO/ActivityManager(583): Process pro.googlemapp (pid 770) has died. 01-19 05:31:49.941: WARN/GpsLocationProvider(583): Unneeded remove listener for uid 1000 01-19 05:31:49.941: DEBUG/GpsLocationProvider(583): stopNavigating 01-19 05:31:49.951: INFO/WindowManager(583): WIN DEATH: Window{438891c0 pro.googlemapp/pro.googlemapp.LocationActivity paused=false} 01-19 05:31:50.111: WARN/UsageStats(583): Unexpected resume of com.android.launcher while already resumed in pro.googlemapp 01-19 05:31:50.200: WARN/InputManagerService(583): Got RemoteException sending setActive(false) notification to pid 770 uid 10025

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Data Modeling: Logical Modeling Exercise

- by swisscheese

In trying to learn the art of data storage I have been trying to take in as much solid information as possible. PerformanceDBA posted some really helpful tutorials/examples in the following posts among others: is my data normalized? and Relational table naming convention. I already asked a subset question of this model here. So to make sure I understood the concepts he presented and I have seen elsewhere I wanted to take things a step or two further and see if I am grasping the concepts. Hence the purpose of this post, which hopefully others can also learn from. Everything I present is conceptual to me and for learning rather than applying it in some production system. It would be cool to get some input from PerformanceDBA also since I used his models to get started, but I appreciate all input given from anyone. As I am new to databases and especially modeling I will be the first to admit that I may not always ask the right questions, explain my thoughts clearly, or use the right verbage due to lack of expertise on the subject. So please keep that in mind and feel free to steer me in the right direction if I head off track. If there is enough interest in this I would like to take this from the logical to physical phases to show the evolution of the process and share it here on Stack. I will keep this thread for the Logical Diagram though and start new one for the additional steps. For my understanding I will be building a MySQL DB in the end to run some tests and see if what I came up with actually works. Here is the list of things that I want to capture in this conceptual model. Edit for V1.2 The purpose of this is to list Bands, their members, and the Events that they will be appearing at, as well as offer music and other merchandise for sale Members will be able to match up with friends Members can write reviews on the Bands, their music, and their events. There can only be one review per member on a given item, although they can edit their reviews and history will be maintained. BandMembers will have the chance to write a single Comment on Reviews about the Band they are associated with. Collectively as a Band only one Comment is allowed per Review. Members can then rate all Reviews and Comments but only once per given instance Members can select their favorite Bands, music, Merchandise, and Events Bands, Songs, and Events will be categorized into the type of Genre that they are and then further subcategorized into a SubGenre if necessary. It is ok for a Band or Event to fall into more then one Genre/SubGenre combination. Event date, time, and location will be posted for a given band and members can show that they will be attending the Event. An Event can be comprised of more than one Band, and multiple Events can take place at a single location on the same day Every party will be tied to at least one address and address history shall be maintained. Each party could also be tied to more then one address at a time (i.e. billing, shipping, physical) There will be stored profiles for Bands, BandMembers, and general members. So there it is, maybe a bit involved but could be a great learning tool for many hopefully as the process evolves and input is given by the community. Any input? EDIT v1.1 In response to PerformanceDBA U.3) That means no merchandise other than Band merchandise in the database. Correct ? That was my original thought but you got me thinking. Maybe the site would want to sell its own merchandise or even other merchandise from the bands. Not sure a mod to make for that. Would it require an entire rework of the Catalog section or just the identifying relationship that exists with the Band? Attempted a mod to sell both complete albums or song. Either way they would both be in electronic format only available for download. That is why I listed an Album as being comprised of Songs rather then 2 separate entities. U.5) I understand what you bring up about the circular relation with Favorite. I would like to get to this “It is either one Entity with some form of differentiation (FavoriteType) which identifies its treatment” but how to is not clear to me. What am I missing here? u.6) “Business Rules This is probably the only area you are weak in.” Thanks for the honest response. I will readdress these but I hope to clear up some confusion in my head first with the responses I have posted back to you. Q.1) Yes I would like to have Accepted, Rejected, and Blocked. I am not sure what you are referring to as to how this would change the logical model? Q.2) A person does not have to be a User. They can exist only as a BandMember. Is that what you are asking? Minor Issue Zero, One, or More…Oops I admit I forgot to give this attention when building the model. I am submitting this version as is and will address in a future version. I need to read up more on Constraint Checking to make sure I am understanding things. M.4) Depends if you envision OrderPurchase in the future. Can you expand as to what you mean here? EDIT V1.2 In response to PerformanceDBA input... Lessons learned. I was mixing the concept of Identifying / Non-Identifying and Cardinality (i.e. Genre / SubGenre), and doing so inconsistently to make things worse. Associative Tables are not required in Logical Diagrams as their many-to-many relationships can be depicted and then expanded in the Physical Model. I was overlooking the Cardinality in a lot of the relationships The importance of reading through relationships using effective Verb Phrases to reassure I am modeling what I want to accomplish. U.2) In the concept of this model it is only required to track a Venue as a location for an Event. No further data needs to be collected. With that being said Events will take place on a given EventDate and will be hosted at a Venue. Venues will host multiple events and possibly multiple events on a given date. In my new model my thinking was that EventDate is already tied to Event . Therefore, Venue will not need a relationship with EventDate. The 5th and 6th bullets you have listed under U.2) leave me questioning my thinking though. Am I missing something here? U.3) Is it time to move the link between Item and Band up to Item and Party instead? With the current design I don't see a possibility to sell merchandise not tied to the band as you have brought up. U.5) I left as per your input rather than making it a discrete Supertype/Subtype Relationship as I don’t see a benefit of having that type of roll up. Additional Revisions AR.1) After going through the exercise for FavoriteItem, I feel that Item to Review requires a many-to-many relationship so that is indicated. Necessary? Ok here we go for v1.3 I took a few days on this version, going back and forth with my design. Once the logical process is complete, as I want to see if I am on the right track, I will go through in depth what I had learned and the troubles I faced as a beginner going through this process. The big point for this version was it took throwing in some Keys to help see what I was missing in the past. Going through the process of doing a matrix proved to be of great help also. Regardless of anything, if it wasn't for the input given by PerformanceDBA I would still be a lost soul wondering in the dark. Who knows my current design might reaffirm that I still am, but I have learned a lot so I am know I at least have a flashlight in my hand. At this point in time I admit that I am still confused about identifying and non-identifying relationships. In my model I had to use non-identifying relationships with non nulls just to join the relationships I wanted to model. In reading a lot on the subject there seems to be a lot of disagreement and indecisiveness on the subject so I did what I thought represented the right things in my model. When to force (identifying) and when to be free (non-identifying)? Anyone have inputs? EDIT V1.4 Ok took the V1.3 inputs and cleaned things up for this V1.4 Currently working on a V1.5 to include attributes.

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Portletfaces Bridge, Null pointer exception

- by Moayad Abu Jaber

I faced problem in Icefaces portlet using portletfaces bridge inside liferay. the problem is when I open the browser for the first time I got null pointer exception. for example i opened the portal through chrome browser then open firefox, my portlet I made in ICEfaces throw null pointer exception. below you will find full stack trace: java.lang.NullPointerException at org.icefaces.impl.push.servlet.ProxyHttpServletRequest.getCookies(ProxyHttpServletRequest.java:307) at org.icepush.PushContext.getBrowserIDFromCookie(PushContext.java:89) at org.icepush.PushContext.createPushId(PushContext.java:46) at org.icefaces.impl.push.servlet.ICEpushResourceHandler$ICEpushResourceHandlerImpl.beforePhase(ICEpushResourceHandler.java:172) at org.icefaces.impl.push.servlet.ICEpushResourceHandler.beforePhase(ICEpushResourceHandler.java:92) at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:228) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:99) at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:116) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at org.portletfaces.bridge.BridgeImpl.doFacesRequest(BridgeImpl.java:391) at org.portletfaces.bridge.GenericFacesPortlet.doView(GenericFacesPortlet.java:181) at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:328) at javax.portlet.GenericPortlet.render(GenericPortlet.java:233) at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:101) at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:64) at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:92) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:638) at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:723) at com.liferay.portlet.InvokerPortletImpl.render(InvokerPortletImpl.java:425) at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(render_005fportlet_jsp.java:1440) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) at com.liferay.portal.util.PortalImpl.renderPortlet(PortalImpl.java:3740) at com.liferay.portal.util.PortalUtil.renderPortlet(PortalUtil.java:1180) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processPortlet(RuntimePortletUtil.java:160) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processPortlet(RuntimePortletUtil.java:94) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processTemplate(RuntimePortletUtil.java:256) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processTemplate(RuntimePortletUtil.java:181) at org.apache.jsp.html.portal.layout.view.portlet_jsp._jspService(portlet_jsp.java:821) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) at com.liferay.portal.action.LayoutAction.includeLayoutContent(LayoutAction.java:370) at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:629) at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:232) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:153) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:508) at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:485) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:309) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:121) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:182) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:254) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:134) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:261) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.jav a:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:110) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:182) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:222) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.etag.ETagFilter.processFilter(ETagFilter.java:45) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:254) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:311) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196) at com.liferay.portal.servlet.filters.threadlocal.ThreadLocalFilter.processFilter(ThreadLocalFilter.java:35) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619) I post this in portletfaces JIRA and their forum, no response so far. hope find the solution here, but I guess this bug in portletfaces! thanks

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