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• Utilisez-vous le framework Web JBoss Seam destiné à simplifier le développement d'applications Web ? Partagez votre expérience

  L'équipe Java vous propose un débat concernant le framework Web JBoss Seam. Ce framework, disponible depuis début 2005 et proposé par Gaving King le créateur d'Hibernate, veut simplifier le développement d'applications Web. Pour cela Seam se base sur les standards EJB3 et JSF proposés par Java EE et se focalise à réduire la complexité de ces différentes briques (voir article Présentation globale de Seam pour les principes de base). Aujourd'hui Seam atteint la version 3 et offre de nombreuses avancées pour simplifier le développement Web. En parallèle, de nombreux framework Web ont déjà su s'...

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• How do I best remove an entity from my game loop when it is dead?

  - by Iain

  Ok so I have a big list of all my entities which I loop through and update. In AS3 I can store this as an Array (dynamic length, untyped), a Vector (typed) or a linked list (not native). At the moment I'm using Array but I plan to change to Vector or linked list if it is faster. Anyway, my question, when an Entity is destroyed, how should I remove it from the list? I could null its position, splice it out or just set a flag on it to say "skip over me, I'm dead." I'm pooling my entities, so an Entity that is dead is quite likely to be alive again at some point. For each type of collection what is my best strategy, and which combination of collection type and removal method will work best?

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• What are famous windows programming framework in work field?

  - by Moon

  Hi, I am a php programmer. Ever since I started working in php industry, companies I worked with used zend framework, codeigniter, and cake php. So...in windows programming world, what are equivalent to zend framework, codeigniter, and cake php? The reason I am asking this question is because I am about to start windows programming. I am not asking for a certain language. I would like to know many frameworks as possible. p.s: someone please add 'framework' and 'popular' tags for me...

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• Dojo 1.8 : première beta pour le framework JavaScript avec des composant pour mobiles et la pagination, les versions 1.4 et 1.7 révisées

  Dojo 1.8 : première beta pour le framework JavaScript Avec des composants pour la pagination et pour mobiles, les versions 1.4 et 1.7 révisées L'équipe Dojo annonce trois révisions de son framework. Dojo 1.4.4 Tout d'abord, il y a la mise à niveau de la version 1.4 avec sa révision 1.4.4. Étrange idée de réviser une ancienne version lorsqu'on sait que nous en sommes déjà à la version 1.7 ? Pas tout à fait. Les versions du framework sont parfois fort différentes et afin d'éviter aux développeurs de devoir recod...

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• La RC de Rails 3 repoussée au 11 juin et premières infos sur la version 3.1 du framework

  Mise à jour du 09/06/10 La RC de Rails 3 repoussée au 11 juin Et premières infos sur la version 3.1 du framework La RC du framework était attendue pour hier. Mais c'est une quatrième beta qui a fait son apparition. Des retards de dernières minutes ont empêché Rails 3 de sortir pendant la RailsConf qui se déroule actuellement à Baltimore, objectif initialement prévu par l'équipe de développement. Le fondateur du framework, David Heinemeier Hansson, reste cependant confiant puisque la RC devrait finalement arriver ce vendredi 11. Pour mémoire Rails 3 marque une avancée majeure pour la technologie. Cette ver...

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• Le Zend Framework 2 est sorti, réécriture complète du code pour plus de modularité, flexibilité et sécurité

  Le Zend Framework 2 est sorti Réécriture complète du code pour plus de modularité, flexibilité et sécurité La société Zend Technologies PHP vient d'annoncer par envois de mail et communiqué de presse la sortie de son Framework : Zend Framework 2. Cette version téléchargeable dès maintenant sera officiellement présentée le mercredi 12 septembre dans un webinar mené par le président : Matthew Weier O'Phinney. [IMG]http://idelways.developpez.com/news/images/zend-logo.png[/IMG] On peut noter que cela fait plusieurs mois que nous attendons cette version, mainte fois annoncée, mainte fois reportée. Elle arrive cinq ans après le lancement de la ver...

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• I finished "Beginning Android Games", should I use its framework?

  - by orod

  I've worked through Mario Zechner's "Beginning Android Games" and have made my own pong and asteroids game using the framework used in the book. I have also downloaded the source code for Replica Island and am able to run that. I like Replica Island's framework over the one I made from reading the book. Some differences are that Replica Island uses different activities for each screen instead of Zechner's Screen class and that Replica Island can use a lot of textures and isn't limited to textures with dimensions of powers of 2. If I'm serious about writing games and apps for Android should I learn Replica Island's framework and use that instead of the one I made while reading Zechner's book?

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• jQuery 1.8 permettra de construire son propre build du framework JavaScript, sa déclinaison pour UI mobile également

  JQuery 1.8 permettra de construire son propre build Du framework JavaScript, sa déclinaison pour UI mobile également Nous l'avouons sans détour, c'est avec un peu de retard que nous nous faisons l'écho de la sortie de la pré-version de JQuery 1.8 et de la version officielle de JQuery Mobile 1.1.0. Mais comme dit le dicton, mieux vaut tard que jamais. Principale nouveauté de la pré-version 1.8 du Framework JavaScript, la possibilité de construire son propre build pour ajouter ou ne garder que les modules voulus (ajax, css, dimensions, effects, offset). Du côté de la version pour navigateurs mobiles du framework - qui permet de réaliser des UI tactiles (fortement inspirées d'...

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• Trying to build OpenSimulator.. nant fails

  - by Gary

  Output of nant is: Buildfile: file:///root/opensim-0.6.8-release/OpenSim.build Target framework: Mono 2.0 Profile Target(s) specified: build [echo] Using 'mono-2.0' Framework init: Debug: [echo] Platform unix build: [nant] /root/opensim-0.6.8-release/OpenSim/Framework/Servers/HttpServer/OpenSim.Framework.Servers.HttpServer.dll.build build Buildfile: file:///root/opensim-0.6.8-release/OpenSim/Framework/Servers/HttpServer/OpenSim.Framework.Servers.HttpServer.dll.build Target framework: Mono 2.0 Profile Target(s) specified: build build: [echo] Build Directory is /root/opensim-0.6.8-release/OpenSim/Framework/Servers/HttpServer/bin/Debug [csc] Compiling 29 files to '/root/opensim-0.6.8-release/OpenSim/Framework/Servers/HttpServer/bin/Debug/OpenSim.Framework.Servers.HttpServer.dll'. [csc] /root/opensim-0.6.8-release/OpenSim/Framework/Servers/HttpServer/AsynchronousRestObjectRequester.cs(103,41): error CS0246: The type or namespace name `TResponse' could not be found. Are you missing a using directive or an assembly reference? [csc] Compilation failed: 1 error(s), 0 warnings BUILD FAILED - 0 non-fatal error(s), 1 warning(s) /root/opensim-0.6.8-release/OpenSim/Framework/Servers/HttpServer/OpenSim.Framework.Servers.HttpServer.dll.build(14,6): External Program Failed: /usr/lib/pkgconfig/../../lib/mono/2.0/gmcs.exe (return code was 1) Total time: 1.2 seconds. BUILD FAILED Nested build failed. Refer to build log for exact reason. Total time: 1.3 seconds. OS is Fedora 7. Any ideas appreciated. :)

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• What's the best C# recommendation engine or framework?

  - by cDima

  Is there anyway to use the examples for the "My Media" Microsoft research project? My Media is a "dynamic personalization and recommendation software framework toolkit" ( http://www.mymediaproject.org ), but out of the box it doesn't provide a sample database (only a LINQ-to-SQL .dbml schema), I don't believe it will be easy to re-create by hand. I was hoping to understand recommendation engines and machine learning with this C#/.Net as a testbed, but without a simple quick start or db it seems impractical. Any suggestions? (I guess it's time to switch to Java with Apache's Mahout, Weka or something similar?)

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• Linq Problem - Sequence contains no matching element

  - by Pino

  Ok I have the following, set-up and am recieving the following error. returnData.Options = this.ProductOptions.Select(o => o.ToDataModel()).ToList(); This line of code should do a conversion from DAL Entity (Subsonic) to a ViewModel. However I am recieving the following error message Server Error in '/' Application. Sequence contains no matching element Now, I've checked and the this.ProductOptions variable contains 3 results. Whats does this error meen and how can I debug it?

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• split a list using linq

  - by Anonym

  I've the following code: var e = someList.GetEnumerator(); var a = new List<Foo>(); var b = new List<Foo>(); while(e.MoveNext()) { if(CheckCondition(e.Current)) { b.Add(e.Current); break; } a.Add(e.Current); } while(e.MoveNext()) b.Add(e.Current) This looks ugly. Basically, iterate through a list and add elements to one list until some condition kicks in, and add the rest to another list. Is there a better way e.g. using linq ? CheckCondition() is expensive, and the lists can be huge so I'd prefer to not do anything that iterates the lists twice.

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• exception with Linq to SQL using sdf file

  - by Ben

  Hi, I've set up a project with an SDF local database file and am trying to access it using an LINQ To SQL (".dbml") file. I have used the connection string provided by the sdf file and can instanciate the object with out a problem: thisDataContext = new MyDataContext(GetConnectionString()); However, whenever i try to access any information from it eg var collection = (from MyObject p in thisDataContext.MyTable select p); I get the error - "The table name is not valid. [ Token line number (if known) = 2,Token line offset (if known) = 14,Table name = Person ]" I am using Visual Studio 2008 SP1 .Net 3.5 and SQL 2008 CE. I gather something similar happened for SQL 2005 CE and a Hotfix was released, but i would have thought the fix would have been fixed in this version before release. Does anyone know the fix for this? Thanks

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• linq Except and custom IEqualityComparer

  - by Joe

  I'm trying to implement a custom comparer on two lists of strings and use the .Except() linq method to get those that aren't one one of the lists. The reason I'm doing a custom comparer is because I need to do a "fuzzy" compare, i.e. one string on one list could be embedded inside a string on the other list. I've made the following comparer ` public class ItemFuzzyMatchComparer : IEqualityComparer { bool IEqualityComparer<string>.Equals(string x, string y) { return (x.Contains(y) || y.Contains(x)); } int IEqualityComparer<string>.GetHashCode(string obj) { if (Object.ReferenceEquals(obj, null)) return 0; return obj.GetHashCode(); } } ` When I debug, the only breakpoint that hits is in the GetHashCode() method. The Equals() never gets touched. Any ideas?

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• Listing subdirectories 3 levels deep using LINQ C#

  - by paradox

  I'd like to know if there is a better alternative to my following code (preferably using LINQ) #region List and filter directories to only 3 levels deep // List all subdirectories within main directory string[] folders = Directory.GetDirectories(@"C:\pdftest\", "*" ,SearchOption.AllDirectories); List<string> subdirectories = new List<string>(); //Filter away all main directories, now we are left with subdirectories 3 levels deep for (int i = 0; i<folders.Length; i++) { int occurences = folders[i].Split('\\').Length-1; if (occurences==4) subdirectories.Add(folders[i]); } #endregion

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• dotConnect LINQ to MySQL Issue

  - by Saravanan I M

  I am using dotConnect LINQ to MySQL and i have the following error. what would be the cause for this issue annot convert parameter value of type 'System.String' to MySQL type 'MySqlType.TimeStamp'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Cannot convert parameter value of type 'System.String' to MySQL type 'MySqlType.TimeStamp'. Source Error: Line 93: { Line 94: string loginLowered = login.ToLower(); Line 95: return context.ISVs.Where(u = u.Email == loginLowered).SingleOrDefault() == null; Line 96: Line 97: }

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• ASP.NET MVC2 - using LINQ-generated class

  - by ile

  There are few things not clear to me about ASP.NET MV2. In database I have table Contacts with several fields, and there is an additional field XmlFields of which type is xml. In that field are stored additional description fields. There are 4 classes: Contact class which corresponds to Contact table and is defined by default when creating LINQ classes ContactListView class which inherits Contact class and has some additional properties ContactXmlView class that contains fields from XmlFields field ContactDetailsView class which merges ContactListView and ContactXmlView into one class and this one is used to display data in view pages ContactListView class has re-defined some properties from Contact class (so that I can add [Required] filter used for validation) - but I get warning message: 'ObjectTest.Models.Contacts.ContactListView.FirstName' hides inherited member 'SA.Model.Contact.FirstName'. Use the new keyword if hiding was intended. ContactDetailsView class is also used in a form when creating new contact and adding it to database. I am not sure if this is correct way, and the warning message confuses me a bit. Any advise about this? Thanks, Ile

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• NHibernate.Linq to Criteria API translation help needed

  - by Arnis L.

  I'm not sure how to add paging to this: Session.Linq<Article>() .Where(art => art.Tags.Any(t => t.Name == tag)).ToList(). So i decided to use Criteria API. var rowCount = Session.CreateCriteria(typeof(Article)) .SetProjection(Projections.RowCount()).FutureValue<Int32>(); var res = Session.CreateCriteria(typeof(Article)) .Add(/* any help with this? :) */) .SetFirstResult(page * pageSize) .SetMaxResults(pageSize) .AddOrder(new Order("DatePublish", true)) .Future<Article>(); totalCount = rowCount.Value; Any help appreciated.

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• Subsonic linq using activerecord very slow compared to simplerepository

  - by skiik

  Anyone know anything about why linq queries are about 6 times slower when querying using active record vs simplerepository? The below code runs 6 times slower than when i query the data using a simple repository. This code is executed 1000 times in a loop Thanks in advance string ret = ""; // if (plan == null) { plan =VOUCHER_PLAN.SingleOrDefault(x => x.TENDER_TYPE == tenderType); } if (plan == null) throw new InvalidOperationException("voucher type does not exist." + tenderType); seq = plan.VOUCHER_SEQUENCES.First(); int i = seq.CURRENT_NUMBER; seq.CURRENT_NUMBER += seq.STEP; seq.Save();

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• How to properly use CoreData validation & error framework ?

  - by Xav

  I've created a model in Xcode, and for various attributes I have minimum & maximum values defined and that are enforced by coreData at runtime. I'm using NSManagedObject validateValue:forKey:error to check for user input values. I was a bit disappointed to see that the localized error message is not specific, and I get a "The operation couldn't be completed. (Cocoa error 1620)" for too small values and a "The operation couldn't be completed. (Cocoa error 1610)" for too large values. It's written in the coreData documentation that "you can localize most aspects of a managed object model, including entity and property names and error messages". Unfortunately it's not very detailed on how you implement it for error messages. So How do you customize error message ? How do you localize them ? Is it possible to customize it in a way where it will mentioned the reference value ex: "Value should be lower than %@" or "Value should be higher than %@" ?

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• Any clever way to fix 'string or binary data would be truncated' warning with LINQ

  - by Simon_Weaver

  Is there a clever way to determine which field is causing 'string or binary data would be truncated' with LINQ. I've always ended up doing it manually by stepping through a debugger, but with a batch using 'SubmitChanges' I have to change my code to inserting a single row to find the culprit in a batch of rows. Am I missing something or in this day and age do I really have to still use a brute force method to find the problem. Please dont give me advice on avoiding this error in future (unless its something much cleverer than 'validate your data'). The source data is coming from a different system where I dont have full control anyway - plus I want to be lazy. PS. Does SQL Server 2008 actually tell me the field name. Please tell me it does! I'll upgrade!

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• How to persist non-trivial fields in Play Framework

  - by AlexR

  I am trying to persist complex objects using Ebeans in Play Framework (2.03). In particular, I've created a class that contains a field of type weka.classifier.Classifier (Weka is a popular machine learning library - see http://weka.sourceforge.net/doc/weka/classifiers/Classifier.html). Classifier implements Serializeable so I hoped that I can get away with something like @Entity @Table(name = "classifiers") public class ClassifierData extends Model { @Id public Long id; public Classifier classifier; } However, the Evolutions script suggests the following database structure: create table classifiers ( id bigint auto_increment not null, constraint pk_classifiers primary key (id)) ) In other words, it ignores the field of type Classifier. (The database is MySQL if it makes any difference) What should I do to store complex serializeable objects using Ebean/Evolutions/PlayFramework?

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• C# Linq: Restructuring object

  - by Ben

  I'd like to take an object like this: SortedList<string, SortedList<int, SortedList<DateTime, double>>> Data and, for a given 'int' value (key of first nested sorted list), restructure it like this: SortedList<DateTime, SortedList<string, double>> or, better yet, this: SortedList<DateTime, double[]> where each 'double[]' has as many elements as there are KeyValue pairs in the SortedList. I'm guessing Linq is the way to go, but can't figure it out. Thanks for any suggestions.

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• Missing System.Core.dll and others on Visual Studio 2010 Project targeting 3.5 Framework

  - by Mark Struzinski

  I just got Visual Studio 2010 installed and running on my development machine (alongside VS 2008). The first thing I did was make a copy of an existing project and convert it up to the VS 2010 project. I told the conversion wizard to leave the project targeting the 3.5 framework. The project compiles and runs just fine in VS 2008. When I go to build it, several of my references are marked as missing (System.Core, System.Xml.Linq, System.Data.DataSetExtensions). When I go to the Add Reference dialog, they are not present. Yet if I view the GAC at C:\Windows\Assembly, I can see the entries there. I have tried converting the projects to 4.0, then back down to 3.5, and also unloading/reloading the projects. Nothing works. Has anyone else ran across this problem?

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• How to write simple code in LInq

  - by user281180

  I have the following in my NotSelectedList. public List<TestModel> SelectedList = new List<TestModel>(); public List<TestModel>NotSelectedList = new List<TestModel>(); NotificationDetailsModel projects = new NotificationDetailsModel(); projects.ProjectID = Convert.ToInt32(Row["ProjectID"]); projects.Valid= Convert.ToBoolean(Row["Validity"]); NotSelectedList.Add(projects); How can I write a simple code in LINQ to select from the NotSelectedList where Validity == True and store the data in SelectedList?

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