Hibernate version:
3.0.2

Mapping documents:
<hibernate-mapping package="wpi.metier">
<class name="Contrat" node="r">
<composite-id name="contratPK">
<key-property name="id" type="string" node="@id"/>
<key-property name="code" type="string" node="code"/>
<key-property name="validite" type="string" node="validite"/>
</composite-id>
<property name="client" type="string" node="client"/>
<property name="contrat" type="string" node="contrat"/>
<property name="contact" type="string" node="contact"/>
<property name="famFile" type="string" node="famFile"/>
<property name="famUrl" type="string" node="famUrl"/>
</class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():
Session dom4jSession = session.getSession(EntityMode.DOM4J);
Session pojoSession = session.getSession(EntityMode.POJO);

Transaction transaction = session.beginTransaction();

/* Lecture du document avec DOM4J */
SAXReader saxReader = new SAXReader();

String xmlfile= this.getRequest().getSession(false).getServletContext().getRealPath("/") + "ressources" + java.io.File.separator + "xml" + java.io.File.separator + "wpi-contrats.xml";

Document xmldb = saxReader.read(xmlfile);
List users = xmldb.selectNodes("//r");
Iterator it = users.iterator();

while(it.hasNext()){
Element element = (Element) it.next();

/* Recuperation de la clé composite */
ContratPK contratpk = new ContratPK();
contratpk.setId(element.attributeValue("id"));
contratpk.setCode(element.elementText("code"));
contratpk.setValidite(element.elementText("validite"));

/* Pour tester ... */
contrat = new Contrat();

contrat.setId(element.attributeValue("id"));
contrat.setCode(element.elementText("code"));
contrat.setValidite(element.elementText("validite"));
contrat.setClient(element.elementText("client"));
contrat.setContact(element.elementText("contact"));
contrat.setContrat(element.elementText("contrat"));
contrat.setFamFile(element.elementText("famFile"));
contrat.setFamUrl(element.elementText("famUrl"));
contrat.setContratPK(contratpk);

pojoSession.merge("wpi.metier.Contrat",contrat);
pojoSession.flush();

Object pojo = pojoSession.get("wpi.metier.Contrat",contratpk );

Object dom4j = dom4jSession.get("wpi.metier.Contrat",contratpk );


Ce code n'est pas tout à fait cohérent mais devait me permettre de "découvrir" la syntaxe extacte de la representation XML de mes elements.

le pojoSession.get fonctionne sans aucun pb mais le dom4jSession.get fait un ClassCastException

Full stack trace of any exception that occurs:

java.lang.ClassCastException
at org.hibernate.property.Dom4jAccessor$AttributeGetter.get(Dom4jAccessor.java:171)
at org.hibernate.tuple.AbstractComponentTuplizer.getPropertyValue(AbstractComponentTuplizer.java:61)
at org.hibernate.tuple.AbstractComponentTuplizer.getPropertyValues(AbstractComponentTuplizer.java:67)
at org.hibernate.type.ComponentType.getPropertyValues(ComponentType.java:307)
at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:158)
at org.hibernate.engine.EntityKey.generateHashCode(EntityKey.java:103)
at org.hibernate.engine.EntityKey.<init>(EntityKey.java:47)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:76)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:799)
at wpi.databean.ListeContratsDBBean.select(ListeContratsDBBean.java:88)
at wpi.singleton.SingletonContrats.init(SingletonContrats.java:96)
at wpi.singleton.SingletonContrats.<init>(SingletonContrats.java:26)
at wpi.singleton.SingletonContrats.getInstance(SingletonContrats.java:36)
at org.apache.jsp.jsp.Contrats_jsp._jspService(Contrats_jsp.java:141)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)



Je vois pas du tout pourquoi ce ClassCastException ;-( !!!!

Qui peut m'aider ???