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• How to profile the execution of an OSGi deployment?

  - by Jaime Soriano

  I'm starting the development of an OSGi bundle for an application that will be deployed in a device with some hardware limitations. I'd like to know how could I profile the execution of that bundle to be always sure that it's going to fit with its dependencies in the final device. It would be nice to have a profiler to know how much memory is each bundle using, to localize bottle necks and to compare different implementations of the same service. Is there any profiler for OSGi deployments or should I use a general Java profiler? For developing I'm using Pax runner with Apache felix to run the bundle and maven to manage project dependencies and building.

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• How do I fix this JBoss EJB client authentication issue?

  - by Rich

  I have an EJB deployed under JBoss (we're moving a project to it from Weblogic), I can get an EJBHome reference to the EJB via a JNDI lookup. The login-config.xml is set to use the module org.jboss.security.auth.spi.BaseCertLoginModule. When my client code tries to invoke the create method via reflection, calling invoke, I get an InvocationException which wraps an AccessException, which wraps a final exception of javax.security.auth.login.FailedLoginException: Password Incorrect/Password Required at org.jboss.security.auth.spi.UsernamePasswordLoginModule.login(UsernamePasswordLoginModule.java:213).... Am I missing some client code to use BaseCertLoginModule instead of UsernamePasswordLoginModule? Thanks in advance, any suggestions appreciated, apologies for not posting the entire stacktrace but it's on a secured network without internet access.

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• Unit Testing in QTestLib - running single test / tests in class / all tests

  - by Dave

  I'm just starting to use QTestLib. I have gone through the manual and tutorial. Although I understand how to create tests, I'm just not getting how to make those tests convenient to run. My unit test background is NUnit and MSTest. In those environments, it was trivial (using a GUI, at least) to alternate between running a single test, or all tests in a single test class, or all tests in the entire project, just by clicking the right button. All I'm seeing in QTestLib is either you use the QTEST_MAIN macro to run the tests in a single class, then compile and test each file separately; or use QTest::qExec() in main() to define which objects to test, and then manually change that and recompile when you want to add/remove test classes. I'm sure I'm missing something. I'd like to be able to easily: Run a single test method Run the tests in an entire class Run all tests Any of those would call the appropriate setup / teardown functions.

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• What is the correct syntax for using HTML builder with mixed content in Groovy 1.7?

  - by stian

  On the Groovy example page there is an example of how to use Groovy HTML builder with mixed content: p [ "This is some", b"mixed", "text. For more see the", ahref:'http://groovy.codehaus.org' ["Groovy"], "project" ] This is however not working for me, I get an error message like: expecting ']', found 'mixed' @ line 33, column 23. b"mixed", ^ 1 error The Groovy example page states that: [Note: the syntax in some of these examples is slightly out-dated. See chapter 8 of GINA in the mean-time until these examples are updated.] My suspicion therefore is that the syntax of the HTML builder has changed, however I don't have the book so I cannot check and I cannot seem to find any relevant example of this working online. Does anyone know how the syntax is supposed to be in Groovy 1.7 and have got this working?

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• jQuery UI Draggable-Droppable overflow:visible

  - by Jeff

  Sadly, I am unable to provide any JSFiddle for this issue, as I cant seem to reproduce it outside my project. I have a container where there are some boxes, that can be arranged using drag and drop, by utilizing jQuery UI. The problem is, that the container is overflow:auto; but it needs to be overflow:visible;, but if I do that, jQuery UI malfunctions. When a box drag is initiated, it will immediatly jump up aproximately 400-500px. This is how the draggable is created: $(".draggable").draggable({ revert: 'invalid', // when not dropped, the item will revert back to its initial position containment: '#editContainer', // stick to demo-frame if present helper: 'original', cursor: 'move' }); Is this a bug with jQuery UI, or can this be fixed on my end? I apologize for the lack of source code.

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• Creating a web-service client directly from the source

  - by ben

  Hi, I am trying to generate the WS client jar directly from the @Webservice class(es). Let's take this example : package com.example.maven.jaxws.helloservice; import javax.jws.WebService; @WebService public class Hello { public String sayHello(String param) { ; return "Hello " + param; } } I can generate a war file and use glassfish to serve this webservice, and from there I can use the glassfish WSDL URL to generate the client sources. What I am trying to do is to skip the glassfish part. From my maven project defining the webservice, I would like to use the jaxws-maven-plugin to create the client classes but I cannot find any way to specify the actual URL of the webservice. It should be possible right? @see also http://stackoverflow.com/questions/2097789/creating-a-web-service-client-with-a-known-but-inaccessible-wsdl

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• TDD and encapsulation priority conflict

  - by Hanseh

  Hi, I just started practicing TDD in my projects. I'm developing a project now using php/zend/mysql and phpunit/dbunit for testing. I'm just a bit distracted on the idea of encapsulation and the test driven approach. My idea behind encapsulation is to hide access to several object functionalities. To make it more clear, private and protected functions are not directly testable(unless you will create a public function to call it). So I end up converting some private and protected functions to public functions just to be able to test them. I'm really violating the principles of encapsulation to give way to micro function testability. Is this the correct way of doing it?

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• Best practice? iphone: sync data

  - by Andy Jacobs

  So i'm working on a project where there is data visualization. My ultimate goal is that i have a set of data shipped with the download of the iphone app. But i want it connected to a backend, that if the iphone has a connection with the internet. it can sync the changes from the backend. The syncing is no problem or the connection between the backend & the iphone. But what should i use as data storage on my iphone? what is the best way. my data is purely text and doesn't have to be secure. But it's main feature should be updating certain parts of data ( adding and deleting are not so important ) so what is the easiest (read: least time consuming development ) or the best way? sqlite? plist? ..?

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• Avoiding thumbnail name collisions with sorl-thumbnail

  - by Owen Nelson

  Understanding that I should probably just dig into the source to come up with a solution, I'm wondering if anyone has come up with a tactic for dealing with this. In my project, I have a lot of images being generated outside of the application. I'm isolating them on the filesystem based on a model's pk. For example, a model instance with a pk of 121 might have the following images: .../thumbs/1/2/1/img.1.jpg .../thumbs/1/2/1/img.2.jpg ... .../thumbs/1/2/1/img.27.jpg Since the image filenames themselves are not guaranteed to be unique, I'm looking for a way to inform sorl (at runtime) that I'd like to prefix thumbs for this model with the instance pk value. Is this even possible without patching sorl?

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• Changing an extention method from linq-to-sql to entity framework

  - by Jova

  I'm changing my project from working with Linq-to-SQL to working with Entity Framework. I have some extention methods that extend the classes created by LINQ and I'm wondering how to change them to work with the entities instead Here's an example. public static int GetPublishedArticlesCount(this Table<Article> source) { return GetPublishedArticles(source.Context as DataContext, null).Count(); } This method gets the number of published articles. Instead of using this Table<Article>, what should I use instead?

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• Use of Hibernate 3.0 with EJB 3.0 & JPA

  - by SOA Nerd

  Where I'm working the guys that are sitting across from me are working on a project. This is a JavaEE app which uses Struts, Spring, EJB 3.0, JPA, and Hibernate 3.0. They are using EJB 3.0 entity beans with annotations. I've been asking them why Hibernate 3.0 is in this mix and noone can seem to tell me. It feels like they've included Hibernate 3.0 because they were told to but are not using it for anything that they can't get from EJB 3.0 entity beans/JPA. They're using CMP and accessing all of the database functions via EJBs. Can Hibernate give you anything in this setup that can't be provided by EJB 3.0/JPA?

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• WSDL: What do I do with it? Add service Reference? Noobie question

  - by Johnny

  Hey guys! I have been given a WSDL with all the method requests and responses, and all the objects I'll need to use for creating a few webmethods. The thing is, I don't know what to do with it. I've added the WSDL as a Service Reference. I can see the methods and structures, I can instantiate them, it's all there, but the project doesn't build as soon as I add the WSDL. "Error 2 The type name 'ServiceReference1' does not exist in the type 'WSPELab.WSPELab' C:\Users\JJ\Documents\Visual Studio 2008\Projects\WSPELab\WSPELab\Service References\ServiceReference1\Reference.cs 21 111 WSPELabSLN Is it a stupid namespace error on my part? EDIT : Forgot to add this. With the WSDL added, can I used the structures it contains directly? Or are they just "listings" for me to implement? Thanks!

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• Are there any good resources for developing Entity Framework 4 code-first?

  - by KallDrexx

  I am trying to convert my model-first project to code-first, as I can see dealing with the models with the graphical designer will become hard. Unfortunately, with all my googling I can't find one good reference that describes how to do code-first development. Most resources are out of date (so out of date they refer to it as code-only), and the other references I can find seem to assume you understand the basics of context building and code-first (for example, they reference code to build contexts but don't describe where that code should actually go, and how it's actually run). Are there any decent resources for code-first development, that describe how to map your POCO entities into a database schema?

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• In CAB is a service it's own module?

  - by David Anderson

  I'm learning Composite Application Block and I've hit a rock about services. I have my shell application in its own solution, and of course a test module in its own solution (developed and testing completely independent and external of the shell solution). If I created a service named "Sql Service", would I need to put this in it's own library, so that both the shell, and the module know the types? If that's the case, then for good practice, should I put the service project in the shell solution, or external just like a module (in it's own solution), even though it's not loaded as a module? Then, what about references? Should the shell reference this directly, add then add the service? Or load it as a module and add the service? I have a lot of confusion on where I should create my services, and if I should reference or load as modules..

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• Spring Web Service Client Tutorial or Example Required

  - by Nirmal

  Hello All... I need to jump into the Spring Web Service Project, in that I required to implement the Spring Web Service's Client Only.. So, I have already gone through with Spring's Client Reference Document. So, I got the idea of required classes for the implementation of Client. But my problem is like I have done some googling, but didn't get any proper example of both Client and Server from that I can implement one sample for my client. So, if anybody gives me some link or tutorial for proper example from that I can learn my client side implementation would be greatly appreciated. Thanks in advance...

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• how to push data from BlazeDS without recieve message from Flex client?

  - by Teerasej

  Hi, everyone I am using BlazeDS for data-push feature in my Flex application project. From the official tutorial, Getting started with BlazeDS, it shows messaging example with producer/consumer from API. but how can I implement server side which doesn't need to be invoke from Flex client, but from within server-side instead. I got some idea but I don't know how to do because I'm a Flex developer, not Java developer, so I think you can help me. In Google, there's a tutorial show about I need to extend ServiceAdapter class in Java-side, which extends Invoke method. Do I need to extend other class instead of this to do what I want? How to configure the message-config.xml to get the result like I describe above?

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• Options for Linux OS executable archive files - self installers

  - by Matt1776

  I am looking to create a web-project that is able to install with a program. The user should be able to download an archive file or tar file, run it (executable), and the setup script would ask for paths and configurable values and then unpack its 'payload' and sorting out the contents for deployment. This would be a Linux version of the MSI installer. Is there such a thing for Linux operating systems? This does not involve kernel level manipulations. All it needs to do is copy directories and files on the filesystem, which should cover about 80% if not more of all the *nix distributions.

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• Best practice for sharing code between OSX and IOS app

  - by Alberto

  I am creating an iOS version of an existing OSX app and am wondering what the best practices are for sharing code between the two. The code in question only depends on the foundation framework and the Sqlite dynamic library, so it should compile and run fine on both platforms. It seems to me there are three possible options: Create a single project with and OSX and an IOS targets, add source files to each target as appropriate. Create two separate projects for the OSX and IOS apps, put shared code in a common location in the workspace and add it as reference to both projects. Create three projects: OSX app, IOS app and a shared static library with an OSX and an IOS targets; add each library target to the respective application. Is there any reason one of the above approaches may be better than the other two? If not, option 2 seems to be the simplest by far.

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• Gridview with row headers

  - by Seagull

  I am using the ASP.NET3.5 gridview control in a new project. My problem is that the gridview presents data in basic tabular format, whereas I want a grid with row header / grouping behaviors. An example of this would be Outlook web interface, which can group emails by date, as well as allowing you to select individual emails to display. My problem: I can't see how this could be easily done with Gridview? I did find a product called Telerik that has a seemingly fancy Gridview, but I am hesitant to spend money on a single components that now also locks me into a third-party framework...

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• How do you find time for improving your programming skills?

  - by Snehal

  I'm a Java/J2ee programmer working in India. I'm very passionate about programming and I constantly strive to hone my programming skills by reading blogs, solving Project euler questions, learning new technologies, developing small apps etc;. But I find it very difficult to manage my time. Working for 12 hrs a day in office leaves me stressed out and spend my weekends with my family. So i hardly have like 5-6 hrs per week to actually work on something of my interest which will help me improve. How do you manage time so that you find time to improve your current standing? EDIT: 12 hours includes 1hour of travel & 1 hr of break(lunch/coffee). Effectively I work for 10 hours per day in office which is mandated by my organization. -Snehal

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• Where are config files for class libraries physically located?

  - by BadNinja

  My guess is that this question will fall under the category of "duh", but, nevertheless, I'm confused. When using config files in, for example, a Windows Forms Application, the config file can be found in C:\Program files\CompanyName\ProductName\Application.exe.config. However, with the class library I'm developing I do not see a "ClassLibrary.dll.config" file in the install folder after installing it (in tandem with another project) from Visual Studio. Even though I do not see the file anywhere, retrieving data from it works correctly. Plus, running the following code from a method within the class library returns the path you would expect: C:\Program files\CompanyName\ProductName\ClassLibrary.dll.config. If someone could shed some light on what I'm missing here, that would be really awesome. public static string MyMethod() { Assembly assem = Assembly.GetExecutingAssembly(); Configuration config = ConfigurationManager.OpenExeConfiguration(assem.Location); return "The assembly location was: " + assem.Location + Environment.NewLine + "The config file path was: " + config.FilePath; // Gives me "C:\Program files\CompanyName\ProductName\ClassLibrary.dll.config" }

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• "Unable to start program" on Debug Immediately After Successful Build

  - by TZ_Geek

  When I try to run my first application with the debugger, I get a pop up which says: Visual C__ 2008 Express Edition This project is out of date: ProgName - Debug Win32 Would you like to build it? [Yes[ [No] [Cancel] [ ] Do not show this dialog again? I find this somewhat bothersome, because the very last thing that I did just before that was build the application. And the build did complete successfully (immediately before I clicked on Start Debugging -- F5.) The second time I pressed with wrong cilck on the Answer [No] on the same msg Now, I can't compile my apps What exactly does "do not show this dialog again" mean? It sounds to me like its going to remember my answer and use the same answer every time this situation occurs in the future. I did some stuffs like "Clean Solution" then "Build Solution" then "Start Debugging" ,but the same problem what's the solution ,how can I reset this message to make it work again .

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• ASP.NET MVC: How to transfer more than one object to View method?

  - by ile

  I finished NerdDinner tutorial and now I'm playing a bit with project. Index page shows all upcoming dinners: public ActionResult Index() { var dinners = dinnerRepository.FindUpComingDinners().ToList(); return View(dinners); } In DinnerRepository class I have method FindAllDinners and I would like to add to above Index method number of all dinners, something like this: public ActionResult Index() { var dinners = dinnerRepository.FindUpComingDinners().ToList(); var numberOfAllDinners = dinnerRepository.FindAllDinners().Count(); return View(dinners, numberOfAllDinners); } Of course, this doesn't work. As I'm pretty new to OOP I would need help with this one. Thanks, Ile

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• .NET custom form designer: How to implement IMenuCommandService?

  - by jonny

  I've got a report form designer written long ago for a database project. It used a lot of winapi magic hence i was forced to rewrite some parts 'in proper way'. Thanks to some articles from MSDN magazine (here and here) and CodeProject i was able to implement designer surface, toolbox and undo/redo engine. Every resource i discovered on the topic so far is a bit outdated. Can you point to fresh/comprehensive article? Code from article mentioned above seems not working. MenuCommandService.ShowContextMenu is called but nothing appears since there aren't any DesignerVerbs in globalVerbs collection. Should i add 'standard' ones, corresponded to designer actions such as cut/paste, manually? If yes, how can i accomplish this?

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• different location of AndroidManifest.xml

  - by didito

  i have a custom buildchain for an android project. there is a build.xml and build.properties. build.properties contains this line: manifest.file =${env.WORK_FOLDER}/AndroidManifest.xml and WORK_FOLDER is correctly set to proj_root_work. the layout is like the following: proj_root-_work [DIR] (some stuff gets preprocessed and all finally copied here - src, res, assets and the AndroidManifest.xml) -build.xml -build.properties then i call ant for my build configuration from the proj_root and it complains about not finding AndroidManifest.xml. when i put it in my proj_root it works, but i really want it in my _Work directory. i read that the file HAS TO BE in the root, what is the point then of the build.properties entry? also i saw some custom parameters to aapt.exe ... any hints welcome, thx

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