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• Make a connection to a HTTPS server from Java and ignore the validity of the security certificate

  - by justinhj

  I've been testing some that works with a bunch of https servers with different keys, some of which are invalid and all of them are not in the local key store for my JVM. I am really only testing things out, so I don't care about the security at this stage. Is there a good way to make POST calls to the server and tell Java not to worry about the security certificates? My google searches for this have brought up some code examples that make a class to do the validation, that always works, but I cannot get it to connect to any of the servers.

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• sql locking on silverlight app

  - by immuner

  Hi, i am not sure if this is the correct term, but this is what id like to do: I have an application that uses a mssql database. This application can operate in 3 modes. mode 1) user does not alter, but only read the database mode 2) user can add rows (one at a time) onto a table in the database mode 3) user can alter several tables in the database (one person at a time) question 1) how can i ensure that when a user in in mode 3 that the database will "lock" and all logged in users who operate in mode 2 or mode 3 will not be able to change the database until he finishes? question 2) how can i ensure that while there are several users in mode 2, that there will be no conflict while they all update the table? my guess here, is that before adding a new row, you make a server query for the table's current unique keys and add the new entry. will this be safe enough though? Thanks

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• KERN-EXEC 3 when navigating within a text box (Symbian OS Browser Control)

  - by Andrew Flanagan

  I've had nothing but grief using Symbian's browser control on S60 3rd edition FP1. We currently display pages and many things are working smoothly. However, when inputting text into an HTML text field, the user will get a KERN-EXEC 3 if they move left at the beginning of the text input area (which should "wrap" it to the end) or if they move right at the end of the text input area (which should "wrap" it to the beginning). I can't seem to trap the input in OfferKeyEventL. I get the key event, I return EKeyWasConsumed and the cursor still moves. TKeyResponse CMyAppContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType) { if (iBrCtlInterface) // My browser control { TBrCtlDefs::TBrCtlElementType type = iBrCtlInterface->FocusedElementType(); if (type == TBrCtlDefs::EElementActivatedInputBox || type == TBrCtlDefs::EElementInputBox) { if (aKeyEvent.iScanCode == EStdKeyLeftArrow || aKeyEvent.iScanCode == EStdKeyRightArrow) { return EKeyWasConsumed; } } } } I would be okay with completely disabling arrow key navigation but can't seem to do this. Any ideas? Am I going about this the wrong way? Has anyone here even worked with the Browser Control library (browserengine.lib) on S60 3.1?

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• KRL and Yahoo Local Search

  - by Randall Bohn

  I'm trying to use Yahoo Local Search in a Kynetx Application. ruleset avogadro { meta { name "yahoo-local-ruleset" description "use results from Yahoo local search" author "randall bohn" key yahoo_local "get-your-own-key" } dispatch { domain "example.com"} global { datasource local:XML <- "http://local.yahooapis.com/LocalSearchService/V3/localsearch"; } rule add_list { select when pageview ".*" setting () pre { ds = datasource:local("?appid=#{keys:yahoo_local()}&query=pizza&zip=#{zip}&results=5"); rs = ds.pick("$..Result"); } append("body","<ul id='my_list'></ul>"); always { set ent:pizza rs; } } rule add_results { select when pageview ".*" setting () foreach ent:pizza setting pizza pre { title = pizza.pick("$..Title"); } append("#my_list", "<li>#{title}</li>"); } } The list I wind up with is . [object Object] and 'title' has {'$t' => 'Pizza Shop 1'} I can't figure out how to get just the title.

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• Getting ssh to execute a command in the background on target machine

  - by dagorym

  This is a follow-on question to the How do you use ssh in a shell script? question. If I want to execute a command on the remote machine that runs in the background on that machine, how do I get the ssh command to return? When I try to just include the ampersand (&) at the end of the command it just hangs. The exact form of the command looks like this: ssh user@target "cd /some/directory; program-to-execute &" Any ideas? One thing to note is that logins to the the target machine always produce a text banner and I have ssh keys set up so no password is required.

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• C++: A variation of priority queue

  - by Helltone

  I need some kind of priority queue to store pairs <key, value>. Values are unique, but keys aren't. I will be performing the following operations (most common first): random insertion; retrieving (and removing) all elements with the least key. random removal (by value); I can't use std::priority_queue because it only supports removing the head. For now, I'm using an unsorted std::list. Insertion is performed by just pushing new elements to the back (O(1)). Operation 2 sorts the list with std::sort (O(N*logN)), before performing the actual retrieval. Removal, however, is O(n), which is a bit expensive. Any idea of a better data structure?

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• MySQL primary/foreign key size?

  - by David

  I seem to see a lot of people arbitrarily assigning large sizes to primary/foreign key fields in their MySQL schemas, such as INT(11) and even BIGINT(20) as WordPress uses. Now correct me if I'm wrong, but even an INT(4) would support (unsigned) values up to over 4 billion. Change it to INT(5) and you allow for values up to a quadrillion, which is more than you would ever need, unless possibly you're storing geodata at NASA/Google, which I'm sure most of us aren't. Is there a reason people use such large sizes for their primary keys? Seems like a waste to me...

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• Cancel page forward/back hotkeys in Firefox with Greasemonkey

  - by Stimulating Pixels

  First the background: In Firefox 3.6.3 on Mac OS X 10.5.8 when entering text into a standard the hotkey combination of Command+LeftArrow and Command+RightArrow jump the cursor to the start/end of the current line, respectively. However, when using CKEditor, FCKEditor and YUI Editor, Firefox does not seem to completely recognize that it's a text area. Instead, it drops back to the default function for those hotkeys which is to move back/forward in the browser history. After this occurs, the text in the editor is also cleared when you return to the page making it very easy to loose whatever is being worked on. I'm attempting to write a greasemonkey script that I can use to capture the events and prevent the page forward/back jumps from being executed. So far, I've been able to see the events with the following used as a .user.js script in GreaseMonkey: document.addEventListener('keypress', function (evt) { // grab the meta key var isCmd = evt.metaKey; // check to see if it is pressed if(isCmd) { // if so, grab the key code; var kCode = evt.keyCode; if(kCode == 37 || kCode == 39) { alert(kCode); } } }, false ); When installed/enabled, pressing command+left|right arrow key pops an alert with the respective code, but as soon as the dialog box is closed, the browser executes the page forward/back move. I tried setting a new code with evt.keyCode = 0, but that didn't work. So, the question is, can this Greasemonkey script be updated so that it prevents the back/forward page moves? (NOTE: I'm open to other solutions as well. Doesn't have to be Greasemonkey, that's just the direction I've tried. The real goal is to be able to disable the forward/back hotkey functionality.)

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• What points to be used for Drawing Hexagonal Shaped Button

  - by Durga

  Using below code I am able to draw arrow shaped button(shown below) ,but I want to draw hexagone(shown below as result image) ,so that I can use png image of size 175x154 as button image ,What Points I need to use to draw this ? and i need to to draw 6 such buttons ,how do i achieve this ? private void Parent_Load(object sender, EventArgs e) { // Define the points in the polygonal path. Point[] pts = { new Point( 20, 60), new Point(140, 60), new Point(140, 20), new Point(220, 100), new Point(140, 180), new Point(140, 140), new Point( 20, 140) }; // Make the GraphicsPath. GraphicsPath polygon_path = new GraphicsPath(FillMode.Winding); polygon_path.AddPolygon(pts); // Convert the GraphicsPath into a Region. Region polygon_region = new Region(polygon_path); // Constrain the button to the region. btnExam.Region = polygon_region; // Make the button big enough to hold the whole region. btnExam.SetBounds( btnExam.Location.X, btnExam.Location.Y, pts[3].X + 5, pts[4].Y + 5); }

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• Perl Hash Slice, Replication x Operator, and sub params

  - by user210757

  Ok, I understand perl hash slices, and the "x" operator in Perl, but can someone explain the following code example from here (slightly simplified)? sub test{ my %hash; @hash{@_} = (undef) x @_; } Example Call to sub: test('one', 'two', 'three'); This line is what throws me: @hash{@_} = (undef) x @_; It is creating a hash where the keys are the parameters to the sub and initializing to undef, so: %hash: 'one' = undef, 'two' = undef, 'three' = undef The rvalue of the x operator should be a number; how is it that @_ is interpreted as the length of the sub's parameter array? I would expect you'd at least have to do this: @hash{@_} = (undef) x length(@_);

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• the error in the stringbuilder

  - by Kubi

  string rowString = "<tr id=\"row1\" bgcolor=\"#FFFFFF\" onMouseOver=\"this.bgColor='#EEEEEE';\" onMouseOut=\"this.bgColor='#FFFFFF';\" style=\"cursor:pointer;\">" + "<td bgcolor=\"#FFFFFF\"><img src=\"images/"+"-companylogofilename-"+"\" width=\"108\" height=\"32\" alt=\""+"-companyname-"+"\" /></td>" + //turkish.airlines.jpg airlineiconfilename, airline name "<td class=\"table_content\">{0}</td>" + "<td class=\"table_content\">{1}</td>" + "<td class=\"table_content\">{2}</td>" + "<td class=\"table_content\">{3}</td>" + "<td class=\"table_content\">{4}</td>" + "<td class=\"table_content\"><table width=\"98%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">" + "<tr><td class=\"table_content\">{5}</td>" + "<td width=\"20\" align=\"right\">" + "<a href=\"default.aspx\" onClick=\"return hs.htmlExpand(this, { headingText: '{6} - {7}', width: 600, height: 215, targetX: 'row1 400px', targetY: 'row1 40px' })\">" + "<img src=\"images/arrow.png\" width=\"13\" height=\"16\" border=\"0\" class=\"tip\" onMouseOver=\"tooltip('Click for Details.');\" onMouseOut=\"exit();\" />" + "</a>"; accordionHTML.Append(String.Format(rowString, flight.Get_AirlineCode(), flight.Get_Clase(), flight.Get_Departure(), flight.Get_DeprtDate(), flight.Get_DeprtTime(), flight.Get_Destination(), flight.Get_Departure(), flight.Get_Destination())); Hi, Can someone please help me to find the mistake above ? I am getting an error as "Input string was not correct !"; Thanks in advance,

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• C++ password masking

  - by blaxc

  hi... i'm writing a code to receive password input. Below is my code... the program run well but the problem is other keys beside than numerical and alphabet characters also being read, for example delete, insert, and etc. can i know how can i avoid it? tq... string pw=""; char c=' '; while(c != 13) //Loop until 'Enter' is pressed { c = _getch(); if(c==13) break; if(c==8) { if(pw.size()!=0) //delete only if there is input { cout<<"\b \b"; pw.erase(pw.size()-1); } } if((c>47&&c<58)||(c>64&&c<91)||(c>96&&c<123)) //ASCii code for integer and alphabet { pw += c; cout << "*"; } }

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• Single HTML Table from multiple MySQL tables

  - by David Chouinard

  Hi! I've been struggling for a while with this one; I'll try to explain it here as simply as possible. Consider this MySQL table: +----------+-----------+---------+--------+ |status_id |session_id |pilot_id |present | +----------+-----------+---------+--------+ |1 |61 |901 |1 | |2 |63 |901 |1 | |3 |62 |901 |0 | |4 |62 |902 |1 | |5 |63 |903 |1 | +----------+-----------+---------+--------+ Both session_id and pilot_id are foreign keys making reference to a primary key in another table. The same pilot_id can be associated with different session_id, but every pilot_id-session_id combination is unique. I need to make an HTML table (in PHP) that would display the data like this: +----------+---------+---------+---------+ | |61 |62 |63 | +----------+---------+---------+---------+ |901 |X | |X | |902 | |X | | |903 | | |X | +----------+---------+---------+---------+ Hence, rows are pilot_id and columns are session_id. When a pilot_id-session_id combination has a present value of 1, the corresponding cell should be checked. (ie. when the row-combination is zero or the combination does not exist in the MySQL table, nothing should appear in the HTML table) Phew. Any ideas? Thanks!

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• JTextField vs JComboBox behaviour in JTable

  - by Ash

  Okay, this is a hard one to explain but I'll try my best. I have a JTextField and a JComboBox in a JTable, whose getCellEditor method has been overriden as follows: public TableCellEditor getCellEditor( int row, int column ) { if ( column == 3 ) { // m_table is the JTable if ( m_table.getSelectedRowCount() == 1 ) { JComboBox choices = new JComboBox(); choices.setEditable( true ); choices.addItem( new String( "item 1" ) ); return new DefaultCellEditor( choices ); } return super.getCellEditor( row, column ); } Here are the behavioral differences (NOTE that from this point on, when I say JTextField or JComboBox, I mean the CELL in the JTable containing either component): When I click once on a JTextField, the cell is highlighted. Double clicking brings up the caret and I can input text. Whereas, with a JComboBox, single clicking brings up the caret to input text, as well as the combo drop down button. When I tab or use the arrow keys to navigate to a JTextField and then start typing, the characters I type automatically get entered into the cell. Whereas, when I navigate to a JComboBox the same way and then start typing, nothing happens apart from the combo drop down button appearing. None of the characters I type get entered unless I hit F2 first. So here's my question: What do I need to do have JComboBoxes behave exactly like JTextFields in the two instances described above? Please do not ask why I'm doing what I'm doing or suggest alternatives (it's the way it is and I need to do it this way) and yes, I've read the API for all components in question....the problem is, it's a swing API. Thanks in advance, Ash

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• Transactional isolation level needed for safely incrementing ids

  - by Knut Arne Vedaa

  I'm writing a small piece of software that is to insert records into a database used by a commercial application. The unique primary keys (ids) in the relevant table(s) are sequential, but does not seem to be set to "auto increment". Thus, I assume, I will have to find the largest id, increment it and use that value for the record I'm inserting. In pseudo-code for brevity: id = select max(id) from some_table id++ insert into some_table values(id, othervalues...) Now, if another thread started the same transaction before the first one finished its insert, you would get two identical ids and a failure when trying to insert the last one. You could check for that failure and retry, but a simpler solution might be setting an isolation level on the transaction. For this, would I need SERIALIZABLE or a lower level? Additionally, is this, generally, a sound way of solving the problem? Are the any other ways of doing it?

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• iphone: is there any secure way to establish 2-way SSL from an application

  - by pmilosev

  Hi I need to establish a HTTPS 2-way SSL connection from my iPhone application to the customer's server. However I don't see any secure way to deliver the client side certificates to the application (it's an e-banking app, so security is really an issue). From what I have found so far the only way that the app would be able to access the certificate is to provide it pre-bundeled with the application itself, or expose an URL from which it could be fetched (http://stackoverflow.com/questions/2037172/iphone-app-with-ssl-client-certs). The thing is that neither of this two ways prevent some third party to get the certificate, which if accepted as a risk eliminates the need for 2-way SSL (since anyone can have the client certificate). The whole security protocol should look like this: - HTTPS 2-way SSL to authenticate the application - OTP (token) based user registration (client side key pair generated at this step) - SOAP / WSS XML-Signature (requests signed by the keys generated earlier) Any idea on how to establish the first layer of security (HTTPS) ? regards

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• Using attr_accessible in a join model with has_many :through relationship

  - by Paulo Oliveira

  I have a USER that creates a COMPANY and become an EMPLOYEE in the process. The employees table has an :user_id and a :company_id. class User has_many :employees has_many :companies, :through => :employees class Employee belongs_to :user belongs_to :company attr_accessible :active class Company has_many :employees has_many :users, :through => employees Pretty basic. But here's the thing, the resource EMPLOYEE has other attributes than its foreign keys, like the boolean :active. I would like to use attr_accessible, but this causes some problems. The attribute :user_id is set right, but :company_id is nil. @user.companies << Company.new(...) Employee id:1 user_id:1 company_id:nil So my question is: if :user_id is set right, despite it is not an attr_accessible, why :company_id isn't set right just the same? It shouldn't be an attr_accessible. I'm using Rails 3.0.8, and have also tested with 3.0.7.

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• Why is only the suffix of work_index hashed?

  - by Jaroslav Záruba

  I'm reading through the PDF that Brett Slatkin has published for Google I/O 2010: "Data pipelines with Google App Engine": http://tinyurl.com/3523mej In the video (the Fan-in part) Brett says that the work_index has to be a hash, so that 'you distribute the load across the BigTable': http://www.youtube.com/watch?v=zSDC_TU7rtc#t=48m44 ...and this is how work_index is created: work_index = '%s-%d' % (sum_name, knuth_hash(index)) ...which I guess creates something like 'mySum-54657651321987' I do understand the basic idea, but is why only one half of work_index is hashed? Is it important to hash only part of it leaving the suffix out? Would it be wrong to do md5('%s-%d' % (sum_name, index)) so that the hash would be like '6gw8....hq6' ? I'm Java guy so I would use md5 to hash, which means I get id like 'mySum' + 32 characters. (Obviously I want my ids/keys to be as short as possible here.) If I could hash the whole string my id would be just 32 chars. Or would you suggest to use something else to do the hashing with?

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• PHP and Enums

  - by Henrik Paul

  I know that PHP doesn't have native Enumerations. But I have become accustomed to them from the Java world. I would love to use enums as a way to give predefined values which IDEs' auto completion features could understand. Constants do the trick, but there's the namespace collision problem and (or actually because) they're global. Arrays don't have the namespace problem, but they're too vague, they can be overwritten at runtime and IDEs rarely (never?) know how to autofill their keys. Are there any solutions/workarounds you commonly use? Does anyone recall whether the PHP guys have had any thoughts or decisions around enums?

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• Python Introspection: How to get varnames of class methods?

  - by daccle

  I want to get the names of the keyword arguments of the methods of a class. I think I understood how to get the names of the methods and how to get the variable names of a specific method, but I don't get how to combine these: class A(object): def A1(self, test1=None): self.test1 = test1 def A2(self, test2=None): self.test2 = test2 def A3(self): pass def A4(self, test4=None, test5=None): self.test4 = test4 self.test5 = test5 a = A() # to get the names of the methods: for methodname in a.__class__.__dict__.keys(): print methodname # to get the variable names of a specific method: for varname in a.A1.__func__.__code__.co_varnames: print varname # I want to have something like this: for function in class: print function.name for varname in function: print varname # desired output: A1 self test1 A2 self test2 A3 self A4 self test4 test5

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• sql query question / count

  - by scheibenkleister

  Hi, I have houses that belongs to streets. A user can buy several houses. How do I find out, if the user owns an entire street? street table with columns (id/name) house table with columns (id/street_id [foreign key] owner table with columns (id/house_id/user_id) [join table with foreign keys] So far, I'm using count which returns the result: select count(*), street_id from owner left join house on owner.house_id = house.id group by street_id where user_id = 1 count(*) | street_id 3 | 1 2 | 2 A more general count: select count(*) from house group by street_id returns: count(*) | street_id 3 | 1 3 | 2 How can I find out, that user 1 owns the entire street 1 but not street 2? Thanks.

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• Is there alternative way to write this query?

  - by Kugel

  I have tables A, B, C, where A represents items which can have zero or more sub-items stored in C. B table only has 2 foreign keys to connect A and C. I have this sql query: select * from A where not exists (select * from B natural join C where B.id = A.id and C.value > 10); Which says: "Give me every item from table A where all sub-items have value less than 10. Is there a way to optimize this? And is there a way to write this not using exists operator?

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• Django how to handle # in variable name.

  - by Jack

  I've got a dictionary in python which is assigned as a template variable. One of the keys is named "#text" but when i try to access it using {{ artist.image.3."#text"}} I get an error which is File "/home/jack/Desktop/test/appengine/lib/django/django/template/__init__.py", line 558, in __init__ raise TemplateSyntaxError, "Could not parse the remainder: %s" % token[upto:] TemplateSyntaxError: Could not parse the remainder: "#text" So how can I use this in the template? I've tried putting quotes around it but to no avail. I'd like to not modify the dictionary if possible, but if its easy enough to do then I guess its okay. Thanks

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• Asp.Net MVC custom controls - container

  - by Alan

  Is there a way to make helper in Asp.Net MVC to wrap other html like this: <div class="lightGreyBar_left"> <div class="lightGreyBar_right"> <!--Content--> <h3> Profiles</h3> <div class="divOption"> <%= Html.ActionLinkWithImage("Create new", "add.png", Keys.Actions.CreateProfile, "add")%> </div> <!--Content--> </div> </div> So that helper will render containing divs and content that is passed to helper method as parameter.

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• Windows Forms: Unable to Click to Focus a MaskedTextBox in a Non TopLevel Form

  - by Overhed

  Like the title says, I've got a Child form being shown with it's TopLevel property set to False and I am unable to click a MaskedTextBox control that it contains (in order to bring focus to it). I can bring focus to it by using TAB on the keyboard though. The child form contains other regular TextBox controls and these I can click to focus with no problems, although they also exhibit some odd behavior: for example if I've got a value in the Textbox and I try to drag-click from the end of the string to the beginning, nothing happens. In fact I can't use my mouse to move the cursor inside the TextBox's text at all (although they keyboard arrow keys work). I'm not too worried about the odd TextBox behavior, but why can't I activate my MaskedTextBox by clicking on it? Below is the code that shows the form: Dim newReportForm As New Form Dim formName As String Dim FullTypeName As String Dim FormInstanceType As Type formName = TreeView1.SelectedNode.Name FullTypeName = Application.ProductName & "." & formName FormInstanceType = Type.GetType(FullTypeName, True, True) newReportForm = CType(Activator.CreateInstance(FormInstanceType), Form) Try newReportForm.Top = CType(SplitContainer1.Panel2.Controls(0), Form).Top + 25 newReportForm.Left = CType(SplitContainer1.Panel2.Controls(0), Form).Left + 25 Catch End Try newReportForm.TopLevel = False newReportForm.Parent = SplitContainer1.Panel2 newReportForm.BringToFront() newReportForm.Show()

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