Bonjour,
Je suis sur hibernate depuis un moment pour une appli. Avant j'utilisais un Set<Competence>, mais je dois passer à un Map<Competence,Integer>.

J'ai regardé sur pas mal de sites, mais les réponses ne corrigent pas l'erreur.
Voici l'exception levée :

Edit : avec le code c'est mieux...
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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    @ElementCollection(targetClass=Competence.class,fetch=FetchType.EAGER)
    @MapKey(name="id")
    @ManyToMany(targetEntity = Competence.class, cascade = {
        CascadeType.PERSIST, CascadeType.MERGE })
    private Map<Competence,Integer> competences = new HashMap<Competence,Integer>();
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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java.lang.IllegalArgumentException: Can not set java.lang.Long field com.zenika.kbzen.domain.AbstractEntity.id to java.lang.Integer
     at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:146)
     at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:150)
     at java.lang.reflect.Field.get(Field.java:358)
     at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:59)
     at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:227)
     at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:3875)
     at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:3583)
     at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:203)
     at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:242)
     at org.hibernate.type.EntityType.getIdentifier(EntityType.java:456)
     at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:121)
     at org.hibernate.persister.collection.AbstractCollectionPersister.writeElement(AbstractCollectionPersister.java:815)
     at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1203)
     at org.hibernate.action.CollectionRecreateAction.execute(CollectionRecreateAction.java:58)
     at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
     at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
     at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:188)
     at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
     at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
     at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
     at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
     at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
     at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:76)
     at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:467)
     at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
     at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
     at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
     at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
     at $Proxy39.persist(Unknown Source)
     at com.zenika.kbzen.service.support.GenericEntityServiceImpl.insert(GenericEntityServiceImpl.java:41)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196)
     at $Proxy40.insert(Unknown Source)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:416)
     at org.apache.wicket.proxy.$Proxy29.insert(Unknown Source)
     at com.zenika.kbzen.pages.HomePage$1.onClick(HomePage.java:72)
     at org.apache.wicket.markup.html.link.Link.onLinkClicked(Link.java:188)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:211)
     at org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:192)
     at org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:173)
     at org.apache.wicket.request.RequestHandlerStack.executeRequestHandler(RequestHandlerStack.java:84)
     at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:206)
     at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:248)
     at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:131)
     at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:184)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
     at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
     at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
     at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
     at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
     at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:440)
     at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
     at org.mortbay.jetty.Server.handle(Server.java:322)
     at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
     at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
     at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
     at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
     at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
     at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
     at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Pourriez-vous m'expliquer d'où elle vient? Étant novice en hibernate, je pense qu'il cherche à créer une clé pour l'Integer mais j'en suis pas sur...
Je vous remercie par avance pour vos réponses.