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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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• Ubuntu Github ssh keys issue

  - by Alex Baranosky

  I followed every step given in this guide: http://help.github.com/linux-key-setup/ When I get to the end I am able to ssh to [email protected], getting the response: PTY allocation request failed on channel 0 Hi AlexBaranosky! You've successfully authenticated, but GitHub does not provide shell access. Connection to github.com closed But when I go to clone my repo it fails saying: Permission denied (publickey). fatal: The remote end hung up unexpectedly I've used Github a lot, but this is my first use of it from an Ubuntu computer, is there something I am missing here? Any help is greatly appreciated. Alex

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• JQuery live event binding prevents additional callbacks

  - by Alex Ciminian

  Hey! I was building an AJAX listing of elements in my site, with the ability to delete them (also via AJAX). The following piece of code handles the deletion: $('ul.action-menu a.delete').live('click', function () { $.post($(this).attr('href'), function (data) { var recvData = eval( '(' + data + ')' ); if ((recvData.status == 1) && (recvData.delId)) { $('#alert-' + recvData.delId).fadeOut(); } else { alert(recvData.message); } }); return false; }); This works just fine. The problem is that, for elements that were not there when the page was loaded (i.e. that were added dynamically), the post callback does not get executed and it doesn't fade out after being deleted (the AJAX call is being made, it just doesn't execute the callback). Do you have any idea why this is happening? Thanks, Alex

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• Nginx A/B testing

  - by Alex

  Hey, I'm trying to do A/B testing and I'm using Nginx fo this purpose. My Nginx config file looks like this: events { worker_connections 1024; } error_log /usr/local/experiments/apps/reddit_test/error.log notice; http { rewrite_log on; server { listen 8081; access_log /usr/local/experiments/apps/reddit_test/access.log combined; location / { if ($remote_addr ~ "[02468]$") { rewrite ^(.+)$ /experiment$1 last; } rewrite ^(.+)$ /main$1 last; } location /main { internal; proxy_pass http://www.reddit.com/r/lisp; } location /experiment { internal; proxy_pass http://www.reddit.com/r/haskell; } } } This is kind of working, but css and js files woon't load. Can anyone tell me what's wrong with this config file or what would be the right way to do it? Thanks, Alex

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• How to sign installation files of a Visual Studio .msi

  - by Alex

  This may be a duplicate, though I can't find it at this time. If so please point me in the right direction. I recently purchased an authenticode certificate from globalsign and am having problems signing my files for deployment. There are a couple of .exe files that are generated by a project and then put into a .msi. When I sign the .exe files with the signtool the certificate is valid and they run fine. The problem is that when I build the .msi (using the visual studio setup project) the .exe files loose their signatures. So I can sign the .msi after it is built, but the installed .exe files continue the whole "unknown publisher" business. How can I retain the signature on these files for installation on the client machine? You help is appreciated. -Alex

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• xamlparser error after clickonce deployment.Application crashing after installation

  - by black sensei

  Hello Good People, I've built an WPF application with visual studio 2008 and created an installer for it.Works fine so far.I realized it lacks the automatic updates feature, and after trying several solutions, i decided to give a try to clickonce deployment.After a successful deployment on a network server, i 've noticed that the application crashes after installation of the downloaded app.It complains about this: Cannot create instance of 'Login' defined in assembly 'MyApplication, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Exception has been thrown by the target of an invocation. Error in markup file 'MyApplication;component/login.xaml' Line 1 Position 9. here is the stacktrace at System.Windows.Markup.XamlParseException.ThrowException(String message, Exception innerException, Int32 lineNumber, Int32 linePosition, Uri baseUri, XamlObjectIds currentXamlObjectIds, XamlObjectIds contextXamlObjectIds, Type objectType) at System.Windows.Markup.XamlParseException.ThrowException(ParserContext parserContext, Int32 lineNumber, Int32 linePosition, String message, Exception innerException) at System.Windows.Markup.BamlRecordReader.ThrowExceptionWithLine(String message, Exception innerException) at System.Windows.Markup.BamlRecordReader.CreateInstanceFromType(Type type, Int16 typeId, Boolean throwOnFail) at System.Windows.Markup.BamlRecordReader.GetElementAndFlags(BamlElementStartRecord bamlElementStartRecord, Object& element, ReaderFlags& flags, Type& delayCreatedType, Int16& delayCreatedTypeId) at System.Windows.Markup.BamlRecordReader.BaseReadElementStartRecord(BamlElementStartRecord bamlElementRecord) at System.Windows.Markup.BamlRecordReader.ReadElementStartRecord(BamlElementStartRecord bamlElementRecord) at System.Windows.Markup.BamlRecordReader.ReadRecord(BamlRecord bamlRecord) at System.Windows.Markup.BamlRecordReader.Read(Boolean singleRecord) at System.Windows.Markup.TreeBuilderBamlTranslator.ParseFragment() at System.Windows.Markup.TreeBuilder.Parse() at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream) at System.Windows.Application.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc) at System.Windows.Application.LoadComponent(Uri resourceLocator, Boolean bSkipJournaledProperties) at System.Windows.Application.DoStartup() at System.Windows.Application.<.ctorb__0(Object unused) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at myApplication.App.Main() here is just the region the debugger is pointing to <Window x:Class="MyApplication.Login" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:src="clr-namespace:MyApplication" xmlns:UI="clr-namespace:UI;assembly=UI" Title="My Application" Height="400" Width="550" ResizeMode="NoResize" WindowStyle="ThreeDBorderWindow" WindowStartupLocation="CenterScreen" Name="Logine" Loaded="Logine_Loaded" Closed="Logine_Closed" Icon="orLogo.ico"> But the installer version as in the msi from setup project works fine.so i cannot see where the error is comming from since i can have design view. Question 1 : Does any one have a similar issue, or is that a known issue? Question 2 : If it's a known issue then what are alternative.I might give up on the clickonce but then i my automatic update feature will be lost (as in there is none which is not ovekill or seriously outdated that i can find right now). thanks for reading this and for pointing me to the right direction.

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• SQL Anywhere 11, JZ0C0: Connection is already closed

  - by Alex

  SLOVED see commend I develop am webservice based on apache tomcat 6.0.26, apache cxf 2.2.7, spring 3.0, hibernate 3.3 and sybase sqlanywhere 11. im using the latest JDBC Driver from SYBASE jconn.jar Version 6. The persistence layer is based on spring + hibernate dao, the connection is configured via a JNDI datasoure (META-INF directory). It seems that, during longer times of inactivity, the connection from the webservice to the database is closed. Exception: java.sql.SQLException: JZ0C0: Connection is already closed. Best regards, Alex

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• Template engine recommendations

  - by alex

  I'm looking for a template engine. Requirements: Runs on a JVM. Java is good; Jython, JRuby and the like, too... Can be used outside of servlets (unlike JSP) Is flexible wrt. to where the templates are stored (JSP and a lot of people require the templates to be stored in the FS). It should provide a template loading interface which one can implement or something like that Easy inclusion of parameterized templates- I really like JSP's tag fragments Good docs, nice code, etc., the usual suspects I've looked at JSP- it's nearly perfect except for the servlet and filesystem coupling, Stringtemplate- I love the template syntax, but it fails on the filesystem coupling, the documentation is lacking and template groups and stuff are confusing, GXP, TAL, etc. Ideas, thoughts? Alex

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• How to create multiple SOAP webservice clients in same netbeans 6.8 project

  - by James Black

  I have a project that is largely just to help one application make connections to an SAP server, for real-time updates. So the first web service client works fine, but I try to create a second and it seems to hang and I expect part of the problem is that it is trying to create a new Service class, but the namespace for all the webservices are identical, but the wsdl is obviously different, so it can't create the client. I can do it manually, by just having Service1, Service2, etc, or making some other change, but the issue is that Netbeans should be able to do this easily. I can't use Eclipse as the wsimport parameters that Netbeans uses works, in Eclipse I would need to do too much to make it work, so I will go with the easier tool. I don't want to create a new project for each webservice, as that just seems to be perpetuating a design error. So, how can I easily create multiple webservice clients that will all have the same target namespace, using Netbeans 6.8+?

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• Detecting (on the server side) when a Flex client disconnects from BlazeDS destination

  - by Alex Curtis

  Hi all, I'd like to know whether it's possible to easily detect (on the server side) when Flex clients disconnect from a BlazeDS destination please? My scenario is simply that I'd like to try and use this to figure out how long each of my clients are connected for each session. I need to be able to differentiate between clients as well (ie so not just counting the number of currently connected clients which I see in ds-console). Whilst I could program in a "I'm now logging out" process in my clients, I don't know whether this will fire if the client simply navigates away to another web page rather than going though said logout process. Can anyone suggest if there's an easy way to do this type of monitoring on the server side please. Many thanks, Alex

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• WPF data validation is overriding theme on the interface

  - by black sensei

  Hello! Good People I built a WPF application and manage to get the validation working thanks to posts on stackoverflow.The only probblem i'm having is that it's overriding the theme i'm using. example the theme makes the textboxes look like a round rectangle but after setting the binding it look like the default textboxes. here is my code : <Button.Style> <Style TargetType="{x:Type Button}"> <Setter Property="IsEnabled" Value="false" /> <Style.Triggers> <!-- Require the controls to be valid in order to press OK --> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding ElementName=txtEmail, Path=(Validation.HasError)}" Value="false" /> </MultiDataTrigger.Conditions> <Setter Property="IsEnabled" Value="true" /> </MultiDataTrigger> </Style.Triggers> </Style> </Button.Style> code behind is : //Form loaded event code txtEmail.GetBindingExpression(TextBox.TextProperty).UpdateSource(); I've tried to look into the theme file but i was quickly lost.i thought i could use that file like a web css file.Now i've disabled the data binding because of that.Is there any work around for this? thanks for reading this

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• Classic ASP Request.Form removes spaces?

  - by alex

  I'm trying to figure this oddity out... in classic ASP i seem to be losing spaces in Request.Form values... ie, Request.Form("json") is {"project":{"...","administrator":"AlexGorbatchev", "anonymousViewUrl":null,"assets":[],"availableFrom":"6/10/20104:15PM"... However, CStr(Request.Form) is json={"project":{"__type":"...":"Alex Gorbatchev", "anonymousViewUrl":null,"assets":[],"availableFrom":"6/10/2010 4:15 PM"... Here's the entire code :) <%@ language="VBSCRIPT"%> <% Response.Write(CStr(Request.Form("json"))) Response.Write(CStr(Request.Form)) %> Somebody please tell me I haven't lost all my marbles...

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• Using Windows Integrated Auth & Anonymous during redirect on IIS7

  - by James Black

  I have an application we bought that I need to integrate, and it uses jakarta connection to get to the application from IIS. So, the basic operation is: user goes to the url Gets redirected to the application SSO is enabled, so redirected back to IIS for fetching of domain credentials Back to application If username is blank show login page, else let user in. This is a simplification of all the steps, but the basic idea is here. My difficulty is that I need both Windows Integrated Auth and anonymous on, as some users won't have credentials, and need to be prompted for a username/password. I have looked at: http://stackoverflow.com/questions/2068546/iis-windows-authentication-before-anonymous already, but the user doesn't get to click on a link to decide. The application goes back to IIS looking for login.aspx and from there I want to either get their domain credentials or pass back to the application empty strings to signify that there are no credentials. It seems this isn't going to be possible though as if anonymous is on it doesn't make the 401 request so the credentials aren't passed. If I can't get this to work with just using an ASP page, could it be done using an ISAPI filter, or a module?

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• Java / Tomcat memory leak in RedHat Linux?

  - by black-rocky

  Hi, I've got a Red Hat box with 6G memory running Tomcat and I'm trying to figure out how much memory I have left on the box. Problem is, top & jconsole is showing one figure (around 200M), and system monitor is showing a different figure (around 2G). Does anybody know what the difference is? I'm not sure if there is a memory leak happenning here, but the highest memory consumer is a tomcat process that's taking 2.2G of memory. Screenshots below:

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• Accessing the selected element inside a templated textblock bound to a wpf listbox

  - by black sensei

  Hello good people , i'm trying to achieve a functionality but i'm don't know how to start it. I'm using vs 2008 sp1 and i'm consuming a webservice which returns a collection (is contactInfo[]) that i bind to a ListBox with little datatemplate on it. <ListBox Margin="-146,-124,-143,-118.808" Name="contactListBox" MaxHeight="240" MaxWidth="300" MinHeight="240" MinWidth="300"> <ListBox.ItemTemplate> <DataTemplate> <TextBlock> <CheckBox Name="contactsCheck" Uid="{Binding fullName}" Checked="contacts_Checked" /><Label Content="{Binding fullName}" FontSize="15" FontWeight="Bold"/> <LineBreak/> <Label Content="{Binding mobile}" FontSize="10" FontStyle="Italic" Foreground="DimGray" /> <Label Content="{Binding email}" FontStyle="Italic" FontSize="10" Foreground="DimGray"/> </TextBlock> </DataTemplate> </ListBox.ItemTemplate> </ListBox> Every works fine so far. so When a checkbox is checked i'll like to access the information of the labels (either the) belonging to the same row or attached to it and append the information to a global variable for example (for each checkbox checked). My problem right now is that i don't know how to do that. Can any one shed some light on how to do that? if you notice Checked="contacts_Checked" that's where i planned to perform the operations. thanks for reading and helping out

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• How to sort a list so that managers are always ahead of their subordinates

  - by James Black

  I am working on a project using Groovy, and I would like to take an array of employees, so that no manager follows their subordinates in the array. The reason being that I need to add people to a database and I would prefer not to do it in two passes. So, I basically have: <employees> <employee> <employeeid>12</employeeid> <manager>3</manager> </employee> <employee> <employeeid>1</employeeid> <manager></manager> </employee> <employee> <employeeid>3</employeeid> <manager>1</manager> </employee> </employees> So, it should be sorted as such: employeeid = 1 employeeid = 3 employeeid = 12 The first person should have a null for managers. I am thinking about a binary tree representation, but I expect it will be very unbalanced, and I am not certain the best way to do this using Groovy properly. Is there a way to do this that isn't going to involve using nested loops?

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• Confused over behavior of List.mapi in F#

  - by James Black

  I am building some equations in F#, and when working on my polynomial class I found some odd behavior using List.mapi Basically, each polynomial has an array, so 3*x^2 + 5*x + 6 would be [|6, 5, 3|] in the array, so, when adding polynomials, if one array is longer than the other, then I just need to append the extra elements to the result, and that is where I ran into a problem. Later I want to generalize it to not always use a float, but that will be after I get more working. So, the problem is that I expected List.mapi to return a List not individual elements, but, in order to put the lists together I had to put [] around my use of mapi, and I am curious why that is the case. This is more complicated than I expected, I thought I should be able to just tell it to make a new List starting at a certain index, but I can't find any function for that. type Polynomial() = let mutable coefficients:float [] = Array.empty member self.Coefficients with get() = coefficients static member (+) (v1:Polynomial, v2:Polynomial) = let ret = List.map2(fun c p -> c + p) (List.ofArray v1.Coefficients) (List.ofArray v2.Coefficients) let a = List.mapi(fun i x -> x) match v1.Coefficients.Length - v2.Coefficients.Length with | x when x < 0 -> ret :: [((List.ofArray v1.Coefficients) |> a)] | x when x > 0 -> ret :: [((List.ofArray v2.Coefficients) |> a)] | _ -> [ret]

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• Generate webservice soap client from wsdl when server using Windows Integrated Authentication

  - by James Black

  There is an SAP server that has some webservices I need to use, so I am trying to use wsimport to generate the client stubs. I don't want to find all the wsdls and schemas that are referenced and modify them to do it locally, as that isn't sustainable, if they service should change. So, how can I use wsimport to fetch a wsdl and generate the client stubs when the server is using Windows Integrated Authentication, where even the wsdl requires credentials.

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• testing dao with hibernate genericdao pattern with spring.Headache

  - by black sensei

  Hello good fellas! in my journey of learning hibernate i came across an article on hibernate site. i' learning spring too and wanted to do certain things to discover the flexibility of spring by letting you implement you own session.yes i don't want to use the hibernateTemplate(for experiment). and i'm now having a problem and even the test class.I followed the article on the hibernate site especially the section an "implementation with hibernate" so we have the generic dao interface : public interface GenericDAO<T, ID extends Serializable> { T findById(ID id, boolean lock); List<T> findAll(); List<T> findByExample(T exampleInstance); T makePersistent(T entity); void makeTransient(T entity); } it's implementation in an abstract class that is the same as the one on the web site.Please refer to it from the link i provide.i'll like to save this post to be too long now come my dao's messagedao interface package com.project.core.dao; import com.project.core.model.MessageDetails; import java.util.List; public interface MessageDAO extends GenericDAO<MessageDetails, Long>{ //Message class is on of my pojo public List<Message> GetAllByStatus(String status); } its implementation is messagedaoimpl: public class MessageDAOImpl extends GenericDAOImpl <Message, Long> implements MessageDAO { // mySContainer is an interface which my HibernateUtils implement mySContainer sessionManager; /** * */ public MessageDAOImpl(){} /** * * @param sessionManager */ public MessageDAOImpl(HibernateUtils sessionManager){ this.sessionManager = sessionManager; } //........ plus other methods } here is my HibernatUtils public class HibernateUtils implements SessionContainer { private final SessionFactory sessionFactory; private Session session; public HibernateUtils() { this.sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory(); } public HibernateUtils(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } /** * * this is the function that return a session.So i'm free to implements any type of session in here. */ public Session requestSession() { // if (session != null || session.isOpen()) { // return session; // } else { session = sessionFactory.openSession(); // } return session; } } So in my understanding while using spring(will provide the conf), i'ld wire sessionFactory to my HiberbernateUtils and then wire its method RequestSession to the Session Property of the GenericDAOImpl (the one from the link provided). here is my spring config core.xml <bean id="sessionManager" class="com.project.core.dao.hibernate.HibernateUtils"> <constructor-arg ref="sessionFactory" /> </bean> <bean id="messageDao" class="com.project.core.dao.hibernate.MessageDAOImpl"> <constructor-arg ref="sessionManager"/> </bean> <bean id="genericDAOimpl" class="com.project.core.dao.GenericDAO"> <property name="session" ref="mySession"/> </bean> <bean id="mySession" factory-bean="com.project.core.dao.SessionContainer" factory-method="requestSession"/> now my test is this public class MessageDetailsDAOImplTest extends AbstractDependencyInjectionSpringContextTests{ HibernateUtils sessionManager = (HibernateUtils) applicationContext.getBean("sessionManager"); MessageDAO messagedao =(MessageDAO) applicationContext.getBean("messageDao"); static Message[] message = new Message[] { new Message("text",1,"test for dummies 1","1234567890","Pending",new Date()), new Message("text",2,"test for dummies 2","334455669990","Delivered",new Date()) }; public MessageDAOImplTest() { } @Override protected String[] getConfigLocations(){ return new String[]{"file:src/main/resources/core.xml"}; } @Test public void testMakePersistent() { System.out.println("MakePersistent"); messagedao.makePersistent(message[0]); Session session = sessionManager.RequestSession(); session.beginTransaction(); MessageDetails fromdb = ( Message) session.load(Message.class, message[0].getMessageId()); assertEquals(fromdb.getMessageId(), message[0].getMessageId()); assertEquals(fromdb.getDateSent(),message.getDateSent()); assertEquals(fromdb.getGlobalStatus(),message.getGlobalStatus()); assertEquals(fromdb.getNumberOfPages(),message.getNumberOfPages()); } i'm having this error exception in constructor testMakePersistent(java.lang.NullPointerException at com.project.core.dao.hibernate.MessageDAOImplTest) with this stack : at com.project.core.dao.hibernate.MessageDAOImplTest.(MessageDAOImplTest.java:28) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at junit.framework.TestSuite.createTest(TestSuite.java:61) at junit.framework.TestSuite.addTestMethod(TestSuite.java:283) at junit.framework.TestSuite.(TestSuite.java:146) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:481) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1031) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:888) )) How to actually make this one work.I know this is a lot to stuffs and i'm thanking you for reading it.Please give me a solution.How would you do this? thanks

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• how to implement login and service features as in skype or msn chat in a wpf application

  - by black sensei

  Hello Good people! I'm building an WPF application that connect to web services for its operations.Things that i needed to be working are so far fine.Now i'll like to improve use experience by adding features like username editable combobox, sign me in when skype start and start when computer start. I have a fair idea about each feature but very small knowledge about their implementation. Question 1 username combobox : i use a combobox with isEditable set to true but i think it doesnt have the previous username, would that mean that i have to store every successful login username in a sqlite for example? Question 2 sign me in when skype start : i think about using sqlite after all to store the credentials and store the value (as in true or false) if autologin has to be performed. Question 3 start when computer start : i know it's about having is as service.but the process of using it as a service and removing its service when checkbox is checked or unckecked is a bit confusing to me. Question 4 Please wait(signing in) of skype if i want to do things like please wait at login(login is over webservice) in a WPF application should i use a animated gif in a grid that i can show when hiding the login combobox and passwordbox grid or i should use an animated object(for which i have no knowledge about for now) ? This post in mainly for you experts to either point me to the right resource and tell me what is done as best practice. things like dos and dons.Thanks for reading this and please let me have a clair idea about how to start implementing those features. thanks again

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• Running Awk command on a cluster

  - by alex

  How do you execute a Unix shell command (awk script, a pipe etc) on a cluster in parallel (step 1) and collect the results back to a central node (step 2) Hadoop seems to be a huge overkill with its 600k LOC and its performance is terrible (takes minutes just to initialize the job) i don't need shared memory, or - something like MPI/openMP as i dont need to synchronize or share anything, don't need a distributed VM or anything as complex Google's SawZall seems to work only with Google proprietary MapReduce API some distributed shell packages i found failed to compile, but there must be a simple way to run a data-centric batch job on a cluster, something as close as possible to native OS, may be using unix RPC calls i liked rsync simplicity but it seem to update remote notes sequentially, and you cant use it for executing scripts as afar as i know switching to Plan 9 or some other network oriented OS looks like another overkill i'm looking for a simple, distributed way to run awk scripts or similar - as close as possible to data with a minimal initialization overhead, in a nothing-shared, nothing-synchronized fashion Thanks Alex

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• github url style

  - by Alex Le

  Hi all, I wanted to have users within my website to have their own URL like http://mysite.com/username (similar to GitHub, e.g. my account is http:// github. com/sr3d). This would help with SEO since every profile is under the same domain, as apposed to the sub-domain approach. My site is running on Rails and Nginx/Passenger. Currently I have a solution using a bunch of rewrite in the nginx.conf file, and hard-coded controller names (with namespace support as well). I can share include the nginx.conf here if you guys want to take a look. I wanted to know if there's a better way of making the URL pretty like that. (If you suggest a better place to post this question then please let me know) Cheers, Alex

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• How to use IObservable/IObserver with ConcurrentQueue or ConcurrentStack

  - by James Black

  I realized that when I am trying to process items in a concurrent queue using multiple threads while multiple threads can be putting items into it, the ideal solution would be to use the Reactive Extensions with the Concurrent data structures. My original question is at: http://stackoverflow.com/questions/2997797/while-using-concurrentqueue-trying-to-dequeue-while-looping-through-in-parallel/ So I am curious if there is any way to have a LINQ (or PLINQ) query that will continuously be dequeueing as items are put into it. I am trying to get this to work in a way where I can have n number of producers pushing into the queue and a limited number of threads to process, so I don't overload the database. If I could use Rx framework then I expect that I could just start it, and if 100 items are placed in within 100ms, then the 20 threads that are part of the PLINQ query would just process through the queue. There are three technologies I am trying to work together: Rx Framework (Reactive LINQ) PLING System.Collections.Concurrent structures

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• jQuery image crossfader problem

  - by Dr Casper Black

  Hey!, I have a image switcher fadein/out (it will crossfade iamges - auto(1 - x) ) and a pager but i cant manage to make the image rotation listen the click action on pager, when clicked on pager the image will NOT jup tu the specific img. The problem is in the rotate function the triggerID will hold the "rel" num of the current pager-element which is the equivalent to the image "list" num, so when clicked on the pager, the triggerID will show the rel number that was clicked... can i use that to display the image Here is the code for JQ: $(".paging a:first").addClass("active"); //Rotation rotate = function(){ var triggerID = $active.attr("rel"); //Get number of times to images $(".paging a").removeClass('active'); //Remove all active class $active.addClass('active'); //Add active class (the $active is declared in the rotateSwitch function) //CrossFade Animation var $activeImg = $('.image_reel img.active'); if ( $activeImg.length == 0 ) $activeImg = $('.image_reel img:last'); var $next = $activeImg.next().length ? $activeImg.next() : $('.image_reel img:first'); $activeImg.addClass('last-active'); $next.css({opacity: 0.0}) .addClass('active') .animate({opacity: 1.0}, 500, function() { $activeImg.removeClass('active last-active'); }); }; //Rotation and Timing Event rotateSwitch = function(){ play = setInterval(function(){ //Set timer - this will repeat itself every 3 seconds $active = $('.paging a.active').next(); //Move to the next paging if ( $active.length === 0) { //If paging reaches the end... $active = $('.paging a:first'); //go back to first } rotate(); //Trigger the paging and slider function }, 3000); //Timer speed in milliseconds (3 seconds) }; rotateSwitch(); //Run function on launch //On Click $(".paging a").click(function() { $active = $(this); //Activate the clicked paging //Reset Timer clearInterval(play); //Stop the rotation rotate(); //Trigger rotation immediately rotateSwitch(); // Resume rotation timer return false; //Prevent browser jump to link anchor }); The HTML code: <div class="image_reel"> <img src="images/slideshow/img1.jpg" alt="image 1" class="active"> <img src="images/slideshow/img2.jpg" alt="image 2"> <img src="images/slideshow/img3.jpg" alt="image 3"> <img src="images/slideshow/img4.jpg" alt="image 4"> </div> <div class="paging"> <a href="#" rel="1" title="image 1">&nbsp;</a> <a href="#" rel="2" title="image 2">&nbsp;</a> <a href="#" rel="3" title="image 3">&nbsp;</a> <a href="#" rel="4" title="image 4">&nbsp;</a> </div> plz help.

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• How to determine Windows.Diagnostics.Process from ServiceController

  - by Alex

  This is my first post, so let me start by saying HELLO! I am writing a windows service to monitor the running state of a number of other windows services on the same server. I'd like to extend the application to also print some of the memory statistics of the services, but I'm having trouble working out how to map from a particular ServiceController object to its associated Diagnostics.Process object, which I think I need to determine the memory state. I found out how to map from a ServiceController to the original image name, but a number of the services I am monitoring are started from the same image, so this won't be enough to determine the Process. Does anyone know how to get a Process object from a given ServiceController? Perhaps by determining the PID of a service? Or else does anyone have another workaround for this problem? Many thanks, Alex

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