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Articles indexed Monday May 10 2010

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  • Freeze columns in JXTable

    - by black-rocky
    I'd like to be able to freeze columns in JXTable just like in Excel spreadsheet and came across this project: xframe-swing's JXTable. Just wondering if there is a tutorial for this project. Note that this is not the same as JXTable in swingx project. Or perhaps there is another way?

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  • sudo taking long time

    - by Sam
    On a Ubuntu 9 64bit Linux machine, sudo takes longer time to start. "sudo echo hi" takes 2-3 minutes. strace on sudo tells poll("/etc/pam.d/system-auth", POLLIN) timesout after 5 seconds and there are multiple calls(may be a loop) to same system call (which causes 2-3min delay). Any idea why sudo has to wait for /etc/pam.d/system-auth? Any tunable to make sudo to timeout faster? Thanks Samuel

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  • Attempting to connect to a CORBA Service using corbaloc url

    - by Megasaur
    String[] orbargs= {}; org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(orbargs, null); org.omg.CORBA.Object cobj = orb.string_to_object("corbaloc:iiop:10.1.1.200:6969/OurServiceHelper"); _OurServiceHelper cpsh = _OurServiceHelperHelper.narrow(cobj); // Get's stuck cpsh.ourMethod(); That narrow just hangs. My service is setup to run on a static port. And we know it works since we usually look it up through the NamingService. What am I doing wrong?

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  • JQuery Ajax error handling, show custom exception messages

    Hey Folks, I am wondering if there is some way where I can show custom exception messages as an alert in my Jquery ajax error message. For example, say if I want to throw an exception in server side via Struts by "throw new ApplicationException("User name already exists");", I want to catch this message(User name already exists) in Jquery ajax error message. jQuery("#save").click(function(){ if(jQuery('#form').jVal()){ jQuery.ajax({ type: "POST", url: "saveuser.do", dataType:"html", data:"userId="+encodeURIComponent(trim(document.forms[0].userId.value)), success:function(response){ jQuery("#usergrid").trigger("reloadGrid"); clear(); alert("Details saved successfully!!!"); }, error:function (xhr, ajaxOptions, thrownError){ alert(xhr.status); alert(thrownError); } }); } } ); On the second alert where I alert thrown error, I am getting undefined and the status code is 500. I am not sure where I am going wrong. Please let me know on this. Thanks, Dukes

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  • In an extension method how do a create an object based on the implementation class

    - by Greg
    Hi, In an extension method how do a create an object based on the implementation class. So in the code below I wanted to add an "AddRelationship" extension method, however I'm not sure how within the extension method I can create an Relationship object? i.e. don't want to tie the extension method to this particular implementation of relationship public static class TopologyExtns { public static void AddNode<T>(this ITopology<T> topIf, INode<T> node) { topIf.Nodes.Add(node.Key, node); } public static INode<T> FindNode<T>(this ITopology<T> topIf, T searchKey) { return topIf.Nodes[searchKey]; } public static bool AddRelationship<T>(this ITopology<T> topIf, INode<T> parentNode, INode<T> childNode) { var rel = new RelationshipImp(); // ** How do I create an object from teh implementation // Add nodes to Relationship // Add relationships to Nodes } } public interface ITopology<T> { //List<INode> Nodes { get; set; } Dictionary<T, INode<T> > Nodes { get; set; } } public interface INode<T> { // Properties List<IRelationship<T>> Relationships { get; set; } T Key { get; } } public interface IRelationship<T> { // Parameters INode<T> Parent { get; set; } INode<T> Child { get; set; } } namespace TopologyLibrary_Client { class RelationshipsImp : IRelationship<string> { public INode<string> Parent { get; set; } public INode<string> Child { get; set; } } } public class TopologyImp<T> : ITopology<T> { public Dictionary<T, INode<T>> Nodes { get; set; } public TopologyImp() { Nodes = new Dictionary<T, INode<T>>(); } } thanks

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  • port to subdomain

    - by takeshin
    I have installed Hudson using apt-get, and the Hudson server is available on example.com:8080. For example.com I use standard port *:80 and some virtual hosts set up this way: # /etc/apache2/sites-enabled/subdomain.example.com <Virtualhost *:80> ServerName subdomain.example.com ... </Virtualhost> Here is info about Hudson process: /usr/bin/daemon --name=hudson --inherit --env=HUDSON_HOME=/var/lib/hudson --output=/var/log/hudson/hudson.log --pidfile=/var/run/hudson/hudson.pid -- /usr/bin/java -jar /usr/share/hudson/hudson.war --webroot=/var/run/hudson/war 987 ? Sl 1:08 /usr/bin/java -jar /usr/share/hudson/hudson.war --webroot=/var/run/hudson/war How should I forward: http:// example.com:8080 to: http:// hudson.example.com

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  • Problem using AVAudioRecorder.

    - by tek3
    Hi all, I am facing a strange problem with AVAudioRecorder. In my application i need to record audio and play it. I am creating my player as : if(recorder) { if(recorder.recording) [recorder stop]; [recorder release]; recorder = nil; } NSString * filePath = [NSHomeDirectory() stringByAppendingPathComponent: [NSString stringWithFormat:@"Documents/%@.caf",songTitle]]; NSDictionary *recordSettings = [[NSDictionary alloc] initWithObjectsAndKeys: [NSNumber numberWithFloat: 44100.0],AVSampleRateKey, [NSNumber numberWithInt: kAudioFormatAppleIMA4],AVFormatIDKey, [NSNumber numberWithInt: 1], AVNumberOfChannelsKey, [NSNumber numberWithInt: AVAudioQualityMax],AVEncoderAudioQualityKey,nil]; recorder = [[AVAudioRecorder alloc] initWithURL: [NSURL fileURLWithPath:filePath] settings: recordSettings error: nil]; recorder.delegate = self; if ([recorder prepareToRecord] == YES){ [recorder record]; I am releasing and creating player every time i press record button. But the problem is that ,AVAudiorecorder is taking some time before starting to record , and so if i press record button multiple times continuously ,my application freezes for some time. The same code works fine without any problem when headphones are connected to device...there is no delay in recording, and the app doesn't freeze even if i press record button multiple times. Any help in this regard will be highly appreciated. Thanx in advance.

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  • Browser side code editor component

    - by Serious
    Hello, do you know any browser-side component, in HTML/Javascript, Flash, Applet or Silverlight, that would allow source code edition with syntax highlighting and auto-completion. CodeMirror has a good syntax highlighting support but does not seem to support auto-completion. If no such editor exists do you know any way to implement auto-completion using HTML and javascript or any other browser-side technology ? Thanks by advance.

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  • MySQL: Get unique values across multiple columns in alphabetical order

    - by RuCh
    Hey everyone, If my table looks like this: id | colA | colB | colC =========================== 1 | red | blue | yellow 2 | orange | red | red 3 | orange | blue | cyan What SELECT query do I run such that the results returned are: blue, cyan, orange, red, yellow Basically, I want to extract a collective list of distinct values across multiple columns and return them in alphabetical order. I am not concerned with performance optimization, because the results are being parsed to an XML file that will serve as a cache (database is hardly updated). So even a dirty solution would be fine. Thanks for any help!

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  • The best way to implement drawing features like Keynote

    - by Shamseddine
    Hi all, I'm trying to make a little iPad tool's for drawing simple geometrical objects (rect, rounded rect, ellipse, star, ...). My goal is to make something very close to Keynote (drawing feature), i.e. let the user add a rect (for instance), resizing it and moving it. I want too the user can select many objects and move them together. I've thought about at least 3 differents ways to do that : Extends UIView for each object type, a class for Rect, another for Ellipse, ... With custom drawing method. Then add this view as subview of the global view. Extends CALayer for each object type, a class for Rect, another for Ellipse, ... With custom drawing method. Then add this layer as sublayer of the global view layer's. Extends NSObject for each object type, a class for Rect, another for Ellipse, ... With just a drawing method which will get as argument a CGContext and a Rect and draw directly the form in it. Those methods will be called by the drawing method of the global view. I'm aware that the two first ways come with functions to detect touch on each object, to add easily shadows,... but I'm afraid that they are a little too heavy ? That's why I thought about the last way, which it seems to be straight forward. Which way will be the more efficient ??? Or maybe I didn't thought another way ? Any help will be appreciated ;-) Thanks.

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  • What are the benefits of prototypal inheritance over classical?

    - by Pierreten
    So I finally stopped dragging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the life of me can't figure out what benefits are to be had from object instances using other instances for inheritance.

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  • C++/CLI: Compiling static library with /CLR support

    - by user289770
    We have old (working) code that consists of a static library compiled with /CLR, and a C++/CLI DLL that links to the static lib. We are about to add new features to this static lib. Now, I've have heard from numerous sources that CLR static libraries are not supported by Microsoft, and therefore I'm pushing to clean this up and switch to DLL before we start adding new features to this project. However, I haven't been able to find any official information from Microsoft regarding this (say, from MSDN - other than their forums). I will appreciate any resources about this whole "static lib with CLR" issue.

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  • How can i get more than one jpg. or txt file from any folder?

    - by Phsika
    Dear Sirs; i have two Application to listen network Stream : Server.cs on the other hand; send file Client.cs. But i want to send more files on a stream from any folder. For example. i have C:/folder whish has got 3 jpg files. My client must run. Also My server.cs get files on stream: Client.cs: private void btn_send2_Click(object sender, EventArgs e) { string[] paths= null; paths= System.IO.Directory.GetFiles(@"C:\folder" + @"\", "*.jpg", System.IO.SearchOption.AllDirectories); byte[] Dizi; TcpClient Gonder = new TcpClient("127.0.0.1", 51124); FileStream Dosya; FileInfo Dos; NetworkStream Akis; foreach (string path in paths) { Dosya = new FileStream(path , FileMode.OpenOrCreate); Dos = new FileInfo(path ); Dizi = new byte[(int)Dos.Length]; Dosya.Read(Dizi, 0, (int)Dos.Length); Akis = Gonder.GetStream(); Akis.Write(Dizi, 0, (int)Dosya.Length); Gonder.Close(); Akis.Flush(); Dosya.Close(); } } Also i have Server.cs void Dinle() { TcpListener server = null; try { Int32 port = 51124; IPAddress localAddr = IPAddress.Parse("127.0.0.1"); server = new TcpListener(localAddr, port); server.Start(); Byte[] bytes = new Byte[1024 * 250000]; // string ReceivedPath = "C:/recieved"; while (true) { MessageBox.Show("Waiting for a connection... "); TcpClient client = server.AcceptTcpClient(); MessageBox.Show("Connected!"); NetworkStream stream = client.GetStream(); if (stream.CanRead) { saveFileDialog1.ShowDialog(); // burasi degisecek string pathfolder = saveFileDialog1.FileName; StreamWriter yaz = new StreamWriter(pathfolder); string satir; StreamReader oku = new StreamReader(stream); while ((satir = oku.ReadLine()) != null) { satir = satir + (char)13 + (char)10; yaz.WriteLine(satir); } oku.Close(); yaz.Close(); client.Close(); } } } catch (SocketException e) { Console.WriteLine("SocketException: {0}", e); } finally { // Stop listening for new clients. server.Stop(); } Console.WriteLine("\nHit enter to continue..."); Console.Read(); } Please look Client.cs: icollected all files from "c:\folder" paths= System.IO.Directory.GetFiles(@"C:\folder" + @"\", "*.jpg", System.IO.SearchOption.AllDirectories); My Server.cs how to get all files from stream?

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  • Security / Protecting code in JavaScript

    - by Evans
    With all the recent hype about JavaScript and HTML5 replacing Flash, I wanted to know - How would it be possible to protect client-side js code? Of course, it is possible to obfuscate it, but that would only make it a little harder. Also, for games which submit high scores to the server, wouldn't it be incredibly easy to modify those scores before they are sent to the server? I know even Flash files can be decompiled, but they can be obfuscated and flash decompilation is not as easy as modifying data in JS - could be done easily using a plugin such as Firebug. I'd like to know everyone's views on this.

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  • Create a ASP.NET Generic gridview

    - by harold-sota
    I wont to create a User Control based in gridview that have the edit add delete incorporate, the problem is these: In the admin part of my web site i have to repeat the same action for view add delete update the data for different datasource. I wont to create a generic gridview that have incorporate these action. The gridview can take a xml file for configure him self dependently of the request for desplay the data. Any ideas how i can do it?

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  • Filestream in Sql Server 2008 Express

    - by Xaitec
    i tried to get it to work but i never seem to have to luck, i go a code snippet for a blog and still no dice. This is the code. EXEC sp_configure filestream_access_level, 1 GO RECONFIGURE GO CREATE DATABASE NorthPole ON PRIMARY ( NAME = NorthPoleDB, FILENAME = 'C:\Temp\NP\NorthPoleDB.mdf' ), FILEGROUP NorthPoleFS CONTAINS FILESTREAM( NAME = NorthPoleFS, FILENAME = 'C:\Temp\NP\NorthPoleFS') LOG ON ( NAME = NorthPoleLOG, FILENAME = 'C:\Temp\NP\NorthPoleLOG.ldf') GO

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  • Simple HTML problem with href

    - by pallab
    I am trying to create images hyperlinked to some URL's and hyperlinks donot seem to work. I am using the code as given below at http://windchimes.co.in/index_w%20-%20Copy.html Can you tell me why the hyperlinks to the icons are not workking? <td width="29" style="padding-bottom: 42px;><a href="http://windchimes.co.in/blog" target="_blank"><img align="middle" title="blog" alt="blog" src="http://dl.dropbox.com/u/529534/windchimes/icon-blog.gif"></a></td><td width="29" style="padding-bottom: 42px;> <a href="http://www.linkedin.com/groups?gid=120310" target="_blank"><img align="middle" title="linkedin" alt="linkedin" src="http://dl.dropbox.com/u/529534/windchimes/icon-linkedin.gif"></a></td><td width="29" style="padding-bottom: 42px;> <a href="http://www.facebook.com/group.php?gid=72425590275" target="_blank"><img align="middle" title="facebook" alt="facebook" src="http://dl.dropbox.com/u/529534/windchimes/icon-facebook.gif"></a></td><td width="29" style="padding-bottom: 42px;> <a href="http://twitter.com/windchimesindia" target="_blank"><img align="middle" title="twitter" alt="twitter" src="http://dl.dropbox.com/u/529534/windchimes/icon-twitter.gif"></a></td><td width="29" style="padding-bottom: 42px;> <a href="http://www.youtube.com/user/Windchimesindia" target="_blank"><img align="middle" title="Youtube" alt="Youtube" src="http://dl.dropbox.com/u/529534/windchimes/icon-youtube.gif"></a><td>

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  • Binding DataGridComboBoxColumn to a one to many entity framework relation

    - by Cristian
    I have two tables in the model, one table contains entries related to the other table in a one to many relations, for example: Table User ID Name Table Comments ID UserID Title Text I want to show a datagrid in a WPF window with two columns, one text column with the User name and another column with a combobox showing all the comments made by the user. The datagrid definition is like this: <DataGrid AutoGenerateColumns="False" [layout options...] Name="dataGrid1" ItemsSource="{Binding}"> <DataGrid.Columns> <DataGridTextColumn Header="Name" Binding="{Binding Path=Name}"/> <DataGridComboBoxColumn Header="Comments" SelectedValueBinding="{Binding Path=UserID}" SelectedValuePath="ID" DisplayMemberPath="Title" ItemsSource="{Binding Path=Comments}" /> </DataGrid.Columns> </DataGrid> in the code I assign the DataContext like this: dataGrid1.DataContext = entities.Users; The entity User has a property named Comments that leads to all the comments made by the user. The queries are returning data and the user names are shown but the combobox is not being filled. May be the approach is totally wrong or I'm just missing a very simple point here, I'm opened to learn better methods to do this. Thanks

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  • ajax redirect dillema, how to get redirect URL OR how to set properties for redirect request

    - by Anthony
    First, I'm working in Google Chrome, if that helps. Here is the behavior: I send an xhr request via jquery to a remote site (this is a chrome Extension, and I've set all of the cross-site settings...): $.ajax({ type: "POST", contentType : "text/xml", url: some_url, data: some_xml, username: user, password: pass, success: function(data,status,xhr){ alert(data); }, error: function(xhr, status, error){ alert(xhr.status); } }); The URL that is being set returns a 302 (this is expected), and Chrome follows the redirect (also expected). The new URL returns a prompt for credentials, which are not being pulled from the original request, so Chrome shows a login dialog. If I put in the original credentials, I get back a response about invalid request sent (it's a valid HTTP request -- 200 -- the remote server just doesn't like one of the headers). When viewing the developer window in Chrome, there are two requests sent. The first is to the original URL with all settings set in the ajax request. The second is to the redirect URL, with a method of "GET", nothing from the "POST" field, and no credentials. I am at a loss as to what I can do. I either need to: Get the redirect URL so I can send a second request (xhr.getResponseHeader("Location") does NOT work), Have the new redirect request preserver the settings from the original request, or Get the final URL that the error came from so I can send another request. Ideally I don't want the user to have to put in their credentials a second time in this dialog box, but I'll take what I can get if I can just get the final URL.

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  • Hook a javascript event to page load

    - by Jagd
    I have an aspx that has the following javascript function being ran during the onload event of the body. <body onload="startClock();"> However, I'm setting the aspx up to use a master page, so the body tag doesn't exist in the aspx anymore. How do I go about registering the startClock function to run when the page is hit and still have it use a masterpage?

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  • sudo taking long time

    - by Sam
    On a Ubuntu 9 64bit Linux machine, sudo takes longer time to start. "sudo echo hi" takes 2-3 minutes. strace on sudo tells poll("/etc/pam.d/system-auth", POLLIN) timesout after 5 seconds and there are multiple calls(may be a loop) to same system call (which causes 2-3min delay). Any idea why sudo has to wait for /etc/pam.d/system-auth? Any tunable to make sudo to timeout faster? Thanks Samuel

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