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• Table design issues - should I create separate fields or store as a blob

  - by Ali

  Hi guys I'm working on my web based ordering system and we would like to maintain a kind of task history for each of our orders. A hsitory in the sense that we would like to maintain a log of who did what on an order like lets say an order has been entered - we would like to know if the order was acknowledged for an example. Or lets say somebody followed up on the order - etc. Consider that there are numerous situations like this for each order would it be wise to create a schema on the lines of: Orders ID - title - description - date - is_ack - is_follow - ack_by ..... That accounts to a lot of fields - on teh other hand I could have one LongText field called 'history' and fill it with a serialised object holding all the information. However in the latter case I can't run a query to lets say retrieve all orders that have not been acknowledged and stuff like that. With time requirements woudl change and I would be required to modify it to allow for more detailed tracking and that is why I need to set up a way which would be feasible to scale upon yet I don't want to be restricted on the SQL side too much.

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• How Do You Get the bufspec While Using Vimdiff Through Git

  - by Elizabeth Buckwalter

  I've read Vimdiff and Viewing differences with Vimdiff plus doing various google searches using things like "vimdiff multiple", "vimdiff git", "vimdiff commands" etc. When using do or diffg I get the error "More than two buffers in diff mode, don't know which one to use". When using diffg v:fname_in I get "No matching buffer for v:fname_in". From the vimdiff documentation: :[range]diffg[et] [bufspec] Modify the current buffer to undo difference with another buffer. If [bufspec] is given, that buffer is used. If [bufspec] refers to the current buffer then nothing happens. Otherwise this only works if there is one other buffer in diff mode. and more: When 'diffexpr' is not empty, Vim evaluates to obtain a diff file in the format mentioned. These variables are set to the file names used: v:fname_in original file v:fname_new new version of the same file v:fname_out resulting diff file So, I need to get the name of bufspec, but the default variables (fname_in, fname_new, and fname_out) aren't set. I ran the command git mergetool on a linux box through a terminal. [Edit] A partial solution that bred more questions. I used the "filename" at the bottom of the buffer. It's only a half answer, because occasionally I get a file does not exist error. I believe it's consistently the remote version of the file that "does not exist". I suspect this has something to do with git and indexing. How do you get the bufspec value consistently while using vimdiff through git-mergetool?

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• Java equivalent to VS solution file

  - by Chris

  I'm a C# guy trying to learn Java. I understand the syntax and the basic architecture of the Java platform, and have no problem doing smaller projects myself, but I'd really like to be able to download some open source projects to learn from the work of others. However, I'm running into a stumbling block that I can't seem to find any information on. When I download an open source .NET project, I can open the .sln file with visual studio and everything just loads. Sure, there's occasionally a missing reference or something, but there's really very little configuration required to get things going. I'm not sensing the same ease of use with Java. I'm using eclipse at the moment, and it feels like for every project I have to create a brand new Eclipse project using "create from existing source", and almost nothing compiles properly without significant reconfiguration. In the case of web projects, it's even worse, because Eclipse doesn't appear to support creating a web project from existing source. I have to create a standard Java project from source, then then apparently modify the project file to include the bindings for the web toolkit stuff to work properly. Assuming I want to be able to contribute to a project later on, I shouldn't have to be making such drastic changes to the file structure to get my IDE to a workable state. What am I missing?

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• Replacing XML reserved characters in SQL Server 2005

  - by Barn

  I'm working on a system that takes relational data from a sql server DB and uses SSIS to produce an XML extract using sql server 2005's 'FOR XML PATH' command and a schema. The problem lies with replacing the XML reserved characters. 'FOR XML PATH' is only replacing <, , and &, not ' and ", so I need a way of replacing these myself. I've tried pre-processing the fields in the database to replace XML reserved characters with their entitised equivalents (e.g. & becomes &amp;), but once these fields are used to construct XML using FOR XML the leading & is replaced with &amp;, so I end up with &amp;amp; where I should have &amp;. What I've tried so far is altering the element's contents after the XML has been constructed using XQuery inside SQL server like so: DECLARE @data VARCHAR(MAX) SET @data = CONVERT(VARCHAR(MAX), [my xml column].query(' data(/root/node_i_want)') SELECT @data = [function to replace quotes etc](@data) SET [my xml column].modify('replace value of (/root/node_i_want)[1] with sql:variable("@data")') but I get the same problem. Essentially, is there something wrong I'm doing with the above, or a way to tell FOR XML to entitise other characters, or something like that? Basically anything short of having to write a program to change the XML after it has been assembled in large batches and saved to files!

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• Create ABPerson Records in a Shared CardDAV (10.6/Server Hosted) AddressBook

  - by Woodster

  Hello, My app presently reads and writes to the local Mac OS X 10.6 client addressbook using the AddressBook.framework. It works fine. 10.6 Server introduced AddressBook Server, which 10.6 clients can connect to by setting up a CardDAV Account. User and Group records can be stored in that account, which is synchronized to the 10.6 server and made available to other clients who access the same CardDAV account. Mail.app is able to autocomplete the email addresses from accounts that are in the local datastore as well as the remote CardDAV datastore. ABPeoplePicker can see both. But, programatically, I'm not getting any CardDAV-based data returned from my queries against the shared AddressBook. I'm not sure if I need to ask it for a different AddressBook, or if I need to modify my fetch-request to indicate that I want it to be able to use the shared data too. My goal is to adapt the current code so that it can read/write to the CardDAV account too, instead of just the local addressbook. Thoughts?

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• using ResultSet.Previous method not working in Java using .mdb file OBDC

  - by jsonnie

  Hello, I'm currently having an issue with my open result set not working how I believe it should. The only function that is currently working is the next() method, nothing else will work. If the project is placed into a debug mode you can follow through actionperformed event on the button it hits the previous() method and jumps over the remaining code in the method. If someone could point me in the right direction it would be truly appreciated. FORM CODE: import java.sql.; import javax.swing.; public class DataNavigator extends javax.swing.JFrame { public DataInterface db = null; public Statement s = null; public Connection con = null; public PreparedStatement stmt = null; public ResultSet rs = null; /** Creates new form DataNavigator */ public DataNavigator() { initComponents(); try { db = new DataInterface("jdbc:odbc:CMPS422"); con = db.getConnection(); stmt = con.prepareStatement("SELECT * FROM Products"); rs = stmt.executeQuery(); rs.last(); } catch (Exception e) { } } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { btnFirst = new javax.swing.JButton(); btnNext = new javax.swing.JButton(); btnLast = new javax.swing.JButton(); btnUpdate = new javax.swing.JButton(); btnInsert = new javax.swing.JButton(); btnDelete = new javax.swing.JButton(); txtPartNum = new javax.swing.JTextField(); txtDesc = new javax.swing.JTextField(); txtQty = new javax.swing.JTextField(); txtPrice = new javax.swing.JTextField(); jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); jLabel3 = new javax.swing.JLabel(); jLabel4 = new javax.swing.JLabel(); btnPrev = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setTitle("Assignment 3 Data Navigator"); addWindowListener(new java.awt.event.WindowAdapter() { public void windowOpened(java.awt.event.WindowEvent evt) { formWindowOpened(evt); } }); btnFirst.setText("First"); btnFirst.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnFirstActionPerformed(evt); } }); btnNext.setText("Next"); btnNext.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnNextActionPerformed(evt); } }); btnLast.setText("Last"); btnLast.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnLastActionPerformed(evt); } }); btnUpdate.setText("Update"); btnInsert.setText("Insert"); btnDelete.setText("Delete"); jLabel1.setText("Part Number:"); jLabel2.setText("Description:"); jLabel3.setText("Quantity:"); jLabel4.setText("Price:"); btnPrev.setText("Prev"); btnPrev.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent evt) { btnPrevMouseClicked(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(btnFirst) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(2, 2, 2) .addComponent(btnPrev) .addGap(4, 4, 4) .addComponent(btnNext) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnLast)) .addComponent(jLabel1) .addComponent(jLabel2) .addComponent(jLabel3) .addComponent(jLabel4)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(txtPartNum) .addGroup(layout.createSequentialGroup() .addComponent(btnUpdate) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnInsert) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(btnDelete)) .addComponent(txtDesc) .addComponent(txtQty) .addComponent(txtPrice)) .addContainerGap(71, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(btnFirst) .addComponent(btnNext) .addComponent(btnLast) .addComponent(btnUpdate) .addComponent(btnInsert) .addComponent(btnDelete) .addComponent(btnPrev)) .addGap(66, 66, 66) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(jLabel1) .addComponent(txtPartNum, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(txtDesc, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel2)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(txtQty, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel3)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(txtPrice, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel4)) .addContainerGap(102, Short.MAX_VALUE)) ); pack(); }// </editor-fold> private void formWindowOpened(java.awt.event.WindowEvent evt) { try { this.txtPartNum.setText(rs.getString("Partnum")); this.txtDesc.setText(rs.getString("Description")); this.txtPrice.setText(rs.getString("Price")); this.txtQty.setText(rs.getString("Quantity")); } catch (SQLException e) { } } private void btnNextActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: try { System.out.println(rs.getCursorName()); rs.next(); rs.moveToCurrentRow(); System.out.println(rs.getCursorName()); this.txtPartNum.setText(rs.getString("Partnum")); this.txtDesc.setText(rs.getString("Description")); this.txtPrice.setText(rs.getString("Price")); this.txtQty.setText(rs.getString("Quantity")); System.out.println(rs.getRow()); } catch (Exception e) { } } private void btnLastActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: try { rs.last(); this.txtPartNum.setText(rs.getString("Partnum")); this.txtDesc.setText(rs.getString("Description")); this.txtPrice.setText(rs.getString("Price")); this.txtQty.setText(rs.getString("Quantity")); } catch (Exception e) { } } private void btnFirstActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: try { rs.first(); this.txtPartNum.setText(rs.getString("Partnum")); this.txtDesc.setText(rs.getString("Description")); this.txtPrice.setText(rs.getString("Price")); this.txtQty.setText(rs.getString("Quantity")); } catch (Exception e) { } } private void btnPrevMouseClicked(java.awt.event.MouseEvent evt) { // TODO add your handling code here: try { int i; i = rs.getRow(); if (i > 0) { rs.previous(); System.out.println(rs.getRow()); this.txtPartNum.setText(rs.getString("Partnum")); this.txtDesc.setText(rs.getString("Description")); this.txtPrice.setText(rs.getString("Price")); this.txtQty.setText(rs.getString("Quantity")); } else { System.out.println("FALSE"); } } catch (Exception e) { } } /** * @param args the command line arguments */ public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new DataNavigator().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JButton btnDelete; private javax.swing.JButton btnFirst; private javax.swing.JButton btnInsert; private javax.swing.JButton btnLast; private javax.swing.JButton btnNext; private javax.swing.JButton btnPrev; private javax.swing.JButton btnUpdate; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel4; private javax.swing.JTextField txtDesc; private javax.swing.JTextField txtPartNum; private javax.swing.JTextField txtPrice; private javax.swing.JTextField txtQty; // End of variables declaration } CLASS OBJECT CODE: import java.sql.*; import javax.swing.JOptionPane; public class DataInterface { private static DataInterface dbint = null; private static Connection conn = null; // connection object. private static ResultSet rset = null; public DataInterface(String ODBCDSN) { try { // See if the driver is present. Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); // Open connection to database. conn = DriverManager.getConnection(ODBCDSN); JOptionPane.showMessageDialog(null, "Database successfully opened"); } catch (Exception e) { JOptionPane.showMessageDialog(null, e.toString()); } } public Connection getConnection() { return conn; } public static DataInterface getInstance() { return dbint; } public static ResultSet getResultSet() { return rset; } public PreparedStatement setStatement(String a) throws SQLException{ PreparedStatement stmt = conn.prepareStatement(a); return stmt; }

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• Upgrade to Delphi 2010, or stick with Delphi 7 "forever"?

  - by tim11g

  I am an individual user of Delphi, starting back in the early Turbo Pascal days. I have quite a bit of code developed over the years, but I have never sold software commercially or used it for business. Historically, Borland supported the non-professional users with lower cost versions, but Embarcadero does not. As I consider upgrading to Delphi 2010, I am put off by the high price. Embarcadero is also trying to "encourage" upgrading by threatening to charge "new user" prices for upgrades after Dec 31st. I have several questions for the community to help me decide whether to upgrade. 1) I have read about difficulties updating existing code to support the unicode string types. I have no need for unicode strings, and I am happy with the string support in D7. Will I have to modify existing code and components just to re-compile under D2010? Or are there compiler options to allow backward compatibility if new string types are not required? 2) The main reason I'm considering upgrading is for IDE improvements, and to get access to new APIs added to Windows since 2002. Are there any Windows 7 APIs or capabilities that would be impossible to support from my programs compiled using using Delphi 7 (assuming appropriate JEDI API libraries, for example)? 3) Is there anything else about Delphi 2010 that is really compelling for someone who is primarily interested in Win32 apps, and not working with databases? I have read that D2010 is slow to load, and other versions between D7 and D2010 have had stability issues, and the help system was "broken". What is the biggest benefit to D2010?

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• C# Find and Replace RegEx with wildcard search and addition of value

  - by fraXis

  Hello, The below code is from my other questions that I have asked here on SO. Everyone has been so helpful and I almost have a grasp with regards to RegEx but I ran into another hurdle. This is what I basically need to do in a nutshell. I need to take this line that is in a text file that I load into my content variable: X17.8Y-1.Z0.1G0H1E1 I need to do a wildcard search for the X value, Y value, Z value, and H value. When I am done, I need this written back to my text file (I know how to create the text file so that is not the problem). X17.8Y-1.G54G0T2 G43Z0.1H1M08 I have code that the kind users here have given me, except I need to create the T value at the end of the first line, and use the value from the H and increment it by 1 for the T value. For example: X17.8Y-1.Z0.1G0H5E1 would translate as: X17.8Y-1.G54G0T6 G43Z0.1H5M08 The T value is 6 because the H value is 5. I have code that does everything (does two RegEx functions and separates the line of code into two new lines and adds some new G values). But I don't know how to add the T value back into the first line and increment it by 1 of the H value. Here is my code: StreamReader reader = new StreamReader(fDialog.FileName.ToString()); string content = reader.ReadToEnd(); reader.Close(); content = Regex.Replace(content, @"X[-\d.]+Y[-\d.]+", "$0G54G0"); content = Regex.Replace(content, @"(Z(?:\d*\.)?\d+)[^H]*G0(H(?:\d*\.)?\d+)\w*", "\nG43$1$2M08"); //This must be created on a new line This code works great at taking: X17.8Y-1.Z0.1G0H5E1 and turning it into: X17.8Y-1.G54G0 G43Z0.1H5M08 but I need it turned into this: X17.8Y-1.G54G0T6 G43Z0.1H5M08 (notice the T value is added to the first line, which is the H value +1 (T = H + 1). Can someone please modify my RegEx statement so I can do this automatically? I tried to combine my two RegEx statements into one line but I failed miserably. Thanks so much, Shawn

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• Data loss when downloading data from LDAP server

  - by Ricky D'Amelio

  Hi there. This question comes from a previous one I asked about handling NSData objects: http://stackoverflow.com/questions/2453785/converting-nsdata-to-an-nsstring-representation-is-failing. I have reached the point where I am taking an NSImage, turning it into NSData and uploading those data bytes to the LDAP server. I am doing this like so; //connected successfully to LDAP server above... struct berval photo_berval; struct berval *jpegPhoto_values[2]; photo_berval.bv_len = [photo length]; photo_berval.bv_val = [photo bytes]; jpegPhoto_values[0] = &photo_berval; jpegPhoto_values[1] = NULL; mod.mod_type = "jpegPhoto"; mod.mod_op = LDAP_MOD_REPLACE|LDAP_MOD_BVALUES; mod.mod_bvalues = jpegPhoto_values; mods[0] = &mod; mods[1] = NULL; //perform the modify operation rc = ldap_modify_ext_s(ld, givenModifyEntry, mods, NULL, NULL); That happens with no errors, and you can see a big blob of data when you're in the command line. My problem is, when I go to access the same data at a later stage, I am getting an image file back that's about 120 times smaller than the original image. //find the jpegPhoto attribute photoA = ldap_first_attribute(ld, photoE, &photoBer); while (strcasecmp(photoA, "jpegphoto") != 0) { photoA = ldap_next_attribute(ld, photoE, photoBer); } //get the value of the attribute if ((list_of_photos = ldap_get_values_len(ld, photoE, photoA)) != NULL) { //get the first JPEG photo_data = *list_of_photos[0]; selectedPictureData = [NSData dataWithBytes:&photo_data length:sizeof(photo_data)]; [selectedPictureData writeToFile:@"/Users/username/Desktop/Photo 2.jpg" atomically:YES]; NSLog (@"%@", selectedPictureData); Has anyone successfully done this before or can anyone see what I might be doing wrong? I appreciate anyone's help. Sorry to post so many questions! Ricky.

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• Elmah on a WebServer

  - by Subbarao

  I Setup Elmah to work on a website. It works fine on my local machine but when I moved it to a web server I get this exception Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Unrecognized configuration section elmah/security. Source Error: Line 110: </connectionStrings> Line 111: <elmah> Line 112: <security allowRemoteAccess="1" /> Line 113: <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="CadaretGrantConnectionString"/> Line 114: <!-- Don't log 404 --> It shows me a error at Line 112. What should be done in order to get Elmah to work with remote access? Below is my configuration <elmah> <security allowRemoteAccess="1" /> <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="ConnectionString"/> <!-- Don't log 404 --> <errorFilter> <test> <equal binding="HttpStatusCode" value="404" valueType="Int32"/> </test> </errorFilter> </elmah>

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• accelerating Wheel - psychtoolbox in matlab

  - by ariel

  Hi I am trying to write a code that will show an acceleration wheel. as long as the user press 'a' the wheel should accelerate counterclock wize. the thing is that it turn in the right direction but it doesn't accelerate. This is the code I am using . PTB-3 windows XP. img=imread('c:\images.jpg'); [yimg,ximg,z]=size(img); rot_spd = 1; larrow = KbName('a'); % modify this for Windows rarrow = KbName('b'); [w,rect]=Screen('OpenWindow',0,[0 0 0]); sx = 400; % desired x-size of image (pixels) sy = yimg*sx/ximg; % desired y-size--keep proportional t = Screen('MakeTexture',w,img); bdown=0; th = 0; % initial rotation angle (degrees) HideCursor while(~any(bdown)) % exit loop if mouse button is pressed [x,y,bdown]=GetMouse; [keyisdown,secs,keycode] = KbCheck; if(keycode(larrow)) th = th - rot_spd-1; % accelerate counterclockwise th end if(keycode(rarrow)) th = th + rot_spd+1; % accelerate clockwise th end destrect=[x-sx/2,y-sy/2,x+sx/2,y+sy/2]; Screen('DrawTexture',w,t,[],destrect,th); Screen('Flip',w); end Screen('Close',w) ShowCursor If anyone has an odea why it doesn't accelerate I'd appriciate it very much. Ariel

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• VB.Net Custom Object Master-Detail Data Binding

  - by clawson

  Since beginning to use VB.Net some years ago I have become slowly familiar with using the data binding features of .Net, however I often find my self bewildered by it's behavior and instead of discover the correct way it should work I find some dirty work around to suit my needs and continue on. Needless to say my problems continue to arise. I am using Custom Objects as the Data Sources for by controls and often entire forms. I find it frustrating to separate business logic and the graphical interface. (That could be a new question entirely.) So for a lot of objects I generate a form which has the DataBindingSource for the object. When I create each from using the New Constructor I explicitly pass to it the object to which it should be bound, and then set this passed object as the DataSource of the BindingSource. (That's a mouthful!) Now the Master object (say, bound to each form) often contains a List of objects which I like to have displayed in a DataGridView. I (sometimes) create and modify these child objects in their own form (again creating a databind the same way as the master form) but when I add them to the List in the master object the DataGridView won't update with the new items. So my question really has a few layers: How can I easily/efficiently/correctly update this DataGridView with the list of Detail objects when I add them to the list of the Master object. Is this approach to DataBinding good/viable. What's the best way to separate business logic from graphical interface. Thanks for the help!

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• Delphi dbExpress and Interbase: Unicode migration steps and risks?

  - by mjustin

  Currently, our database uses Win1252 as the only character encoding. We will have to support Unicode in the database tables soon, which means we have to perform this migration for four databases and around 80 Delphi applications which run in-house in a 24/7 environment. Are there recommendations for database migrations to UTF-8 (or UNICODE_FSS) for Delphi applications? Some questions listed below. Many thanks in advance for your answers! are there tools which help with the migration of the existing databases (sizes between 250 MB and 2 GB, no Blob fields), by dumping the data, recreating the database with UNICODE_FSS or UTF-8, and loading the data back? are there known problems with Delphi 2009, dbExpress and Interbase 7.5 related to Unicode character sets? would you recommend to upgrade the databases to Interbase 2009 first? (This upgrade is planned but does not have a high priority) can we simply migrate the database and Delphi will handle the Unicode character sets automatically, or will we have to change all character field types in every Datamodule (dfm and source code) too? which strategy would you recommend to work on the migration in parallel with the normal development and maintenance of the existing application? The application runs in-house so development and database administration is done internally. Update: one problem I found now is that there are two different persistent field types for Unicode and non Unicode character fields. For the existing database, dbExpress creates TStringField objects. For the Unicode database fields, dbExpress creates (or expects!) TWideStringField objects. So we can not just change the database and the connection code page to Unicode. We also have to modify all datamodules to use the new field type. The modified datamodule however will not be backwards compatible.

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• Java 1.4 singleton containing a mutable field

  - by Philippe

  Hi, I'm working on a legacy Java 1.4 project, and I have a factory that instantiates a csv file parser as a singleton. In my csv file parser, however, I have a HashSet that will store objects created from each line of my CSV file. All that will be used by a web application, and users will be uploading CSV files, possibly concurrently. Now my question is : what is the best way to prevent my list of objects to be modified by 2 users ? So far, I'm doing the following : final class MyParser { private File csvFile = null; private static Set myObjects = Collections.synchronizedSet(new HashSet); public synchronized void setFile(File file) { this.csvFile = file; } public void parse() FileReader fr = null; try { fr = new FileReader(csvFile); synchronized(myObjects) { myObjects.clear(); while(...) { // foreach line of my CSV, create a "MyObject" myObjects.add(new MyObject(...)); } } } catch (Exception e) { //... } } } Should I leave the lock only on the myObjects Set, or should I declare the whole parse() method as synchronized ? Also, how should I synchronize - both - the setting of the csvFile and the parsing ? I feel like my actual design is broken because threads could modify the csv file several times while a possibly long parse process is running. I hope I'm being clear enough, because myself am a bit confused on those multi-synchronization issues. Thanks ;-)

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• Python - Code snippet not working on Python 2.5.6, using IDLE

  - by Francisco P.

  Hello, everyone I am using a piece of self-modifying code for a college project. Here it is: import datetime import inspect import re import sys def main(): # print the time it is last run lastrun = 'Mon Jun 8 16:31:27 2009' print "This program was last run at ", print lastrun # read in the source code of itself srcfile = inspect.getsourcefile(sys.modules[__name__]) f = open(srcfile, 'r') src = f.read() f.close() # modify the embedded timestamp timestamp = datetime.datetime.ctime(datetime.datetime.now()) match = re.search("lastrun = '(.*)'", src) if match: src = src[:match.start(1)] + timestamp + src[match.end(1):] # write the source code back f = open(srcfile, 'w') f.write(src) f.close() if __name__=='__main__': main() Unfortunately, it doesn't work. Error returned: # This is the script's output This program is last run at Mon Jun 8 16:31:27 2009 # This is the error message Traceback (most recent call last): File "C:\Users\Rui Gomes\Desktop\teste.py", line 30, in <module> main() File "C:\Users\Rui Gomes\Desktop\teste.py", line 13, in main srcfile = inspect.getsourcefile(sys.modules[__name__]) File "C:\Python31\lib\inspect.py", line 439, in getsourcefile filename = getfile(object) File "C:\Python31\lib\inspect.py", line 401, in getfile raise TypeError('{!r} is a built-in module'.format(object)) TypeError: <module '__main__' (built-in)> is a built-in module I'd be thankful for any solutions.

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• How do you word wrap a RichTextField for Blackberry

  - by Kai

  I've been trying to modify a rich text field to display correctly in its half of the horizontal field. The goal is this: --------------------------- | address is | ***********| | very long | ** IMAGE **| | state, zip | ***********| --------------------------- Where address is a single string separate from the city and zip. I am modifying the address field like this: RichTextField addrField = new RichTextField(address) { public int getPreferredWidth() { return 200; } protected void layout(int maxWidth,int maxHeight) { super.layout(getPreferredWidth(),maxHeight); setExtent(getPreferredWidth(), getHeight()); } }; The results look like this: ----------------------------- | address is ve| ***********| | state, zip | ** IMAGE **| | | ***********| ----------------------------- where clearly the address is just going under the image. Both horizontal fields are static 200 pixels wide. It's not like the system wouldn't know where to wrap the address. However, I have heard it is not easy to do this and is not done automatically. I have had no success finding a direct answer online. I have found people saying you need to do it in a custom layout manager, some refer to the RichTextField API, which is of no use. But nobody actually mentions how to do it. I understand that I may need to read character by character and set where the line breaks should happen. What I don't know is how exactly to do any of this. You can't just count characters and assume each is worth 5 pixels, and you shouldn't have to. Surely there must be some way to achieve this in a way that makes sense. Any suggestions?

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• Managing Cisco programatically; Telnet vs SNMP?

  - by MikeHerrera

  I was recently approached by a network-engineer, co-worker who would like to offload his minor network admin duties to a junior-level helpdesk tech. The specific location in need of management acts as an ISP for tenants on its single-site property, so there's a lot of small adjustments being made on a daily basis. I am thinking it would be helpful to write him a winform app to manage the 32 Cisco devices, on-site. I'd like to initially provide functionality which could modify access control lists, port VLAN assignments, and bandwidth limitations per VLAN... adding more to the list as its deemed valuable. My initial thought was to emulate a telnet session with the network device; utilizing my network-engineer's familiarity with the command-line / IOS interaction. Minimal time would be required to learn Cisco IOS conventions, myself. Though while searching for solutions, it appears that most people favor SNMP. That, or, their specific circumstances pushed them in the direction of SNMP. I wanted to know if I've overlooked an obvious benefit of SNMP. Should I be using SNMP? Why or why not?

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• Android ignores scrollbarsize

  - by Maragues

  Hi, I'm trying to modify a ListView scrollbar's width without success <ListView android:id="@+id/android:list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:choiceMode="singleChoice" android:scrollbars="vertical" android:scrollbarTrackVertical="@drawable/scrollbar_vertical_track" android:scrollbarThumbVertical="@drawable/scrollbar_vertical_thumb" android:scrollbarSize="4px" android:clickable="true"/> First I tried using a drawable image 4px wide, but the .png was resized. Then I tried using a shape extracted from SamplesApi, without success. <shape xmlns:android="http://schemas.android.com/apk/res/android" android:width="40px"> <gradient android:startColor="#505050" android:endColor="#C0C0C0" android:angle="0"/> <corners android:radius="0dp" /> I've tried with and without the android:width attribute. There's a question on the same topic (http://stackoverflow.com/questions/2565083/width-of-a-scroll-bar-in-android), but it doesn't try anything different that what I'm already trying. As far as I know, creating my own theme shouldn't change the output. There's an example in SamplesApi (Views/ScrollBars). I tried modifying the scrollbarSize attribute without result. I know about ninepatch images, but there's an attribute which should do what I want. Any hint? Thanks in advance.

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• Help with dynamic-wind and call/cc

  - by josh

  I am having some trouble understanding the behavior of the following Scheme program: (define c (dynamic-wind (lambda () (display 'IN)(newline)) (lambda () (call/cc (lambda (k) (display 'X)(newline) k))) (lambda () (display 'OUT)(newline)))) As I understand, c will be bound to the continution created right before "(display 'X)". But using c seems to modify itself! The define above prints (as I expected) IN, X and OUT: IN X OUT And it is a procedure: #;2> c #<procedure (a9869 . results1678)> Now, I would expect that when it is called again, X would be printed, and it is not! #;3> (c) IN OUT And now c is not a procedure anymore, and a second invokation of c won't work! #;4> c ;; the REPL doesn't answer this, so there are no values returned #;5> (c) Error: call of non-procedure: #<unspecified> Call history: <syntax> (c) <eval> (c) <-- I was expecting that each invokation to (c) would do the same thing -- print IN, X, and OUT. What am I missing?

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• Conditionally display row using JSF Datatable

  - by Elie

  I have some JSF code that currently works (as shown below), and I need to modify it to conditionally suppress the display of certain rows of the table. I know how to conditionally suppress the display of a particular cell, but that seems to create an empty cell, while what I'm trying to do is to not display the row at all. Any suggestions? <h:dataTable styleClass="resultsTable" id="t1" value="#{r.common}" var="com" headerClass="headerBackgrnd" rowClasses="rowOdd, rowEven" columnClasses="leftAlign, rightAlign, leftAlign"> <h:column> <h:outputText rendered="#{com.rendered}" styleClass="inputText" value="#{com.description}: " /> </h:column> <h:column> <h:outputText styleClass="outputText" value="#{com.v1}" /> </h:column> <h:column> <h:inputText styleClass="inputText" value="#{com.v2}" /> </h:column> </h:dataTable> Basically, the line that says #{com.rendered} will conditionally display the contents of a single cell, producing an empty cell when com.rendered is false. But I want to skip an entire row of the display under certain conditions - how would I go about doing that?

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• How to exclude R*.class files from a proguard build

  - by Jeremy Bell

  I am one step away from making the method described here: http://stackoverflow.com/questions/2761443/targeting-android-with-scala-2-8-trunk-builds work with a single project (vs one project for scala and one for android). I've come across a problem. Using this input file (arguments to) proguard: -injars bin;lib/scala-library.jar(!META-INF/MANIFEST.MF,!library.properties) -outjar lib/scandroid.jar -libraryjars lib/android.jar -dontwarn -dontoptimize -dontobfuscate -dontskipnonpubliclibraryclasses -dontskipnonpubliclibraryclassmembers -keepattributes Exceptions,InnerClasses,Signature,Deprecated, SourceFile,LineNumberTable,*Annotation*,EnclosingMethod -keep public class org.scala.jeb.** { public protected *; } -keep public class org.xml.sax.EntityResolver { public protected *; } Proguard successfully builds scandroid.jar, however it appears to have included the generated R classes that the android resource builder generates and compiles. In this case, they are located in bin/org/jeb/R*.class. This is not what I want. The android dalvik converter cannot build because it thinks there is a duplicate of the R class (it's in scandroid and also the R*.class files). How can I modify the above proguard arguments to exclude the R*.class files from the scandroid.jar so the dalvik converter is happy? Edit: I should note that I tried adding ;bin/org/jeb/R.class;etc... to the -libraryjars argument, and that only seemed to cause it to complain about duplicate classes, and in addition proguard decided to exclude my scala class files too.

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• Google Contacts Error: If-Match or If-None-Match header or entry etag attribute required

  - by Ali

  Hi guys I'm following the example code as defined on this website: http://www.ibm.com/developerworks/opensource/library/x-phpgooglecontact/index.html I want to be able to integrate with my google apps account and play around with teh contacts. However I get this error whenever I try to run the modify contacts code: If-Match or If-None-Match header or entry etag attribute required This is my code: Zend_Loader::loadClass('Zend_Gdata_ClientLogin'); Zend_Loader::loadClass('Zend_Http_Client'); Zend_Loader::loadClass('Zend_Gdata_Query'); Zend_Loader::loadClass('Zend_Gdata_Feed'); $client = getGoogleClient('cp'); // this is a function I made - its working fine $client->setHeaders('If-Match: *'); $gdata = new Zend_Gdata($client); $gdata->setMajorProtocolVersion(3); $query = new Zend_Gdata_Query($id);// id is the google reference $entry = $gdata->getEntry($query); $xml = simplexml_load_string($entry->getXML()); $xml->name->fullName = trim($contact->first_name).' '.trim($contact->last_name); $entryResult = $gdata->updateEntry($xml->saveXML(), $id);

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• Implementing Struts 2 Interceptors using Struts 1

  - by Andriy Zakharchuk

  Hello all, I have a legacy application written with Struts 1. The only feature I was asked to add is to protect some actions. Currently any user can do whatever he/she wants. The idea is to allows all user see the data, but block modification operation, i.e. to modify data a user should log in. I know Struts2 has interceptors, so I could attach them to required actions and forward users to log in page when needed. But how can I do similar thing in Struts 1 application? My first idea was to create my own abstract Action class: public class AuthenticatedAction { public ActionForward execute( ActionMapping mapping, ActionForm form, HttpServletRequest theRequest, HttpServletResponse theResponse) { if (!logged) { // forward to log in form } else { doExecute(mapping, form, request, response); } } public abstract ActionForward doExecute( ActionMapping mapping, ActionForm form, HttpServletRequest theRequest, HttpServletResponse theResponse); } Then change all actions that require authentication from extends Action to extends AuthenticatedAction then add login form, login action (which performs authentications and puts this status into the session) and change JSP header tile to display authentication block, e.g., "You are (not logged in)/", Login/Logout. As I guess this should solve the problem. If this doesn't solve the problem, please explain me why. Is there any better (more elegant like interceptors are) way to do this? Thank you in advance.

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• Problem with sitecore home page

  - by Mirage

  hi guys i am new to site core and asp.net and iis. I have installed all on my server 2008. When i got to /localhost/sitecore/Website/sitecore. i get following error. Can anyone help me what is this and what should i need to do Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS. Source Error: Line 2575: <add verb="GET,HEAD" path="ScriptResource.axd" validate="false" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> Line 2576: </httpHandlers> Line 2577: <membership defaultProvider="sitecore"> -- this line shows errr Line 2578: <providers> Line 2579: <clear />

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• Forwarding an email with python smtplib

  - by robbles

  I'm trying to put together a script that automatically forwards certain emails that match a specific criteria to another email. I've got the downloading and parsing of messages using imaplib and email working, but I can't figure out how to forward an entire email to another address. Do I need to build a new message from scratch, or can I somehow modify the old one and re-send it? Here's what I have so far (client is an imaplib.IMAP4 connection, and id is a message ID): status, data = client.fetch(id, '(RFC822)') email_body = data[0][1] mail = email.message_from_string(email_body) # ...Process message... # This doesn't work forward = email.message.Message() forward.set_payload(mail.get_payload()) forward['From'] = '[email protected]' forward['To'] = '[email protected]' smtp.sendmail(user, ['[email protected]'], forward.as_string()) I'm sure there's something slightly more complicated I need to be doing with regard to the MIME content of the message. Surely there's some simple way of just forwarding the entire message though? # This doesn't work either, it just freezes...? mail['From'] = '[email protected]' mail['To'] = '[email protected]' smtp.sendmail(user, ['[email protected]'], mail.as_string())

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