I switched from 2.1final to 2.1.2 and got the following exception :

14-02-2004 13:17:15:437 ERROR net.sf.hibernate.AssertionFailure:22 - an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session)
net.sf.hibernate.AssertionFailure: cannot access loading collection
at net.sf.hibernate.collection.PersistentCollection.initialize(PersistentCollection.java:196)
at net.sf.hibernate.collection.PersistentCollection.read(PersistentCollection.java:71)
at net.sf.hibernate.collection.Set.contains(Set.java:122)
at com.uniclick.afbah.modele.dossier.Dossier.addVictime(Dossier.java:273)
at com.uniclick.afbah.modele.dossier.victime.Victime.setDossier(Victime.java:128)
at com.uniclick.afbah.modele.dossier.victime.Victime$$BulkBeanByCGLIB$$f45730ac.setPropertyValues(<generated>)
at net.sf.hibernate.persister.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:208)
at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:2174)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:240)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:910)
at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:885)
at net.sf.hibernate.loader.OneToManyLoader.initialize(OneToManyLoader.java:80)
at net.sf.hibernate.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:284)
at net.sf.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:3226)
at net.sf.hibernate.collection.PersistentCollection.initialize(PersistentCollection.java:200)
at net.sf.hibernate.collection.PersistentCollection.read(PersistentCollection.java:71)
at net.sf.hibernate.collection.Set.isEmpty(Set.java:114)
at com.uniclick.afbah.modele.dossier.Dossier.getListeAnomalies(Dossier.java:453)
at com.uniclick.afbah.modele.dossier.Dossier.isIncomplet(Dossier.java:443)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.commons.beanutils.PropertyUtils.getSimpleProperty(PropertyUtils.java:1185)
at org.displaytag.util.LookupUtil.getBeanProperty(LookupUtil.java:200)
at org.displaytag.model.Column.getValue(Column.java:95)
at org.displaytag.model.Column.createChoppedAndLinkedValue(Column.java:146)
at org.displaytag.model.Column.getOpenTag(Column.java:122)
at org.displaytag.tags.TableTag.getTableBody(TableTag.java:1400)
at org.displaytag.tags.TableTag.getHTMLData(TableTag.java:1149)
at org.displaytag.tags.TableTag.doEndTag(TableTag.java:872)
at freemarker.ext.jsp.TagTransformModel$TagWriter.endEvaluation(TagTransformModel.java:313)
at freemarker.ext.jsp.TagTransformModel$TagWriter.afterBody(TagTransformModel.java:289)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:116)
at freemarker.core.Environment.visit(Environment.java:171)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:171)
at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)
at freemarker.core.Environment.visit(Environment.java:171)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:171)
at freemarker.core.Environment.process(Environment.java:156)
at freemarker.template.Template.process(Template.java:219)
at freemarker.ext.servlet.FreemarkerServlet.process(FreemarkerServlet.java:423)
at freemarker.ext.servlet.FreemarkerServlet.doPost(FreemarkerServlet.java:370)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:432)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:356)
at com.opensymphony.webwork.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:64)
at com.opensymphony.webwork.dispatcher.WebWorkResultSupport.execute(WebWorkResultSupport.java:53)
at com.opensymphony.xwork.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:268)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:37)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:37)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.uniclick.xwork.interceptors.AuthorizationInterceptor.intercept(AuthorizationInterceptor.java:74)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:37)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.uniclick.xwork.interceptors.ExceptionInterceptor.intercept(ExceptionInterceptor.java:59)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.uniclick.xwork.interceptors.AuthentificationInterceptor.intercept(AuthentificationInterceptor.java:56)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:116)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:182)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(Unknown Source)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.uniclick.hibernate.HibernateFilter.doFilter(HibernateFilter.java:62)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2416)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)

Here is the mapping :

<set
name="victimes"
lazy="true"
inverse="true"
cascade="all"
sort="unsorted"
>

<key
column="dossier_id"
/>

<one-to-many
class="com.uniclick.afbah.modele.dossier.victime.Victime"
/>
</set>

And I've a standard implementation of hashCode and equals on the Victime object :

public boolean equals(Object other)
{
if ( !(other instanceof Victime) )
return false;

Victime castOther = (Victime) other;

return new EqualsBuilder().append(this.getId(),castOther.getId()).isEquals();
}

public int hashCode()
{
return new HashCodeBuilder().append(this.getId()).toHashCode();
}



I cant undertand this problem ....
Any help appreciated.
Thank you a lot.

When I just change the hibernate2.1.2.jar for the hibernate2.1.1.jar, it works, so I believe there is a problem with the 2.1.2 release ...

Am I the only one to get this problem ????????

Look at this:



It should be kinda clear why this sequence of calls is dangerous. Hibernate is trying to construct a graph of objects and then you call a method of a collection that is still in an inconsistent state.

Very interesting ... So for you, the following code is anti-pattern for Hibernate ?????

VICTIME object :
public void setDossier(Dossier dossier)
{
if (this.dossier != dossier)
{
if (this.dossier != null)
this.dossier.removeVictime(this);
this.dossier = dossier;
if (dossier != null)
dossier.addVictime(this);
}
}


DOSSIER object :
public void addVictime(Victime victime)
{
if (!this.victimes.contains(victime))
{
this.victimes.add(victime);
victime.setDossier(this);
}
}

Yes, interfering with a currently lazy loading collection in a set Method is definately an antipattern.

Does it make sense to add an entry in the faq for this kind of problem ?

If it ever gets a FAQ we will add an entry, not as long as only 2 people had that problem.

As far I am concerned, I think it's an important concept of design to point out, because my previous code was a classic collection management pattern (Poseidon, an UML tool, generates this kind of code) ...
My 2 cents.

There is a FAQ in the wiki area. Public updates are available and encouraged.

dharma, sure you can add it to the FAQ from the Forum if you want, sorry for being so grumpy, just ignore me on some occasion :)

I know it's not the right place, but I cannot post a new entry in the faqs from the forum.


Your account enables:

participation on the Forum
comments on the Wiki


Is there a min of posts to reach ????

This should work. Just click on the "Edit this Page" link in the page header.

Some pages are of course locked down for some access groups and users, but all in the "Community Area" section of the website should be free to edit.

We're talking about this FAQ http://www.hibernate.org/Documentation/FAQsFromTheForum