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From Sebastien Arbogast <sebastien.arbog...@gmail.com>
Subject [CHS] Lazy loading exception
Date Mon, 09 May 2005 04:52:02 GMT
Hi,

I studied CHS sample very carefully and so far I had managed to make
my own Spring/Hibernate/Cocoon-based application work fine. But now I
have added a supplementary level of aggregation to fit in the needs of
the binding framework. I wanted to edit a list of users but the
binding specification needs a wrapping bean around this collection so
I added a Repository entity in my architecture to aggregate users (and
other entities of my system).
So now I try to edit my users list using the binding framework thanks
to the following flowscript code :

//Users management
function listUsers(form){
    getSchaman();
    var repository = schaman.getRepository();
    
    form.load(repository);
    form.showForm("internal/users-list");
    form.save(repository);
    
    cocoon.sendPage("internal/users");
}

where schaman is my global service bean and repository is my wrapping
bean with a Set of users inside. And when I access the users section,
the form is displayed (indicating that the binding is fine) but it's
empty (whereas I'm sure there is only one user in the repository as
I'm authenticated as this user) and I have the following exception in
tomcat log :

- Failed to lazily initialize a collection - no session or session was closed
net.sf.hibernate.LazyInitializationException: Failed to lazily
initialize a collection - no session or session was closed
	at net.sf.hibernate.collection.PersistentCollection.initialize(PersistentCollection.java:209)
	at net.sf.hibernate.collection.PersistentCollection.read(PersistentCollection.java:71)
	at net.sf.hibernate.collection.Set.size(Set.java:106)
	at org.apache.commons.jxpath.util.ValueUtils.getLength(ValueUtils.java:141)
	at org.apache.commons.jxpath.ri.model.beans.BeanPropertyPointer.getLength(BeanPropertyPointer.java:196)
	at org.apache.commons.jxpath.ri.model.beans.PropertyIterator.getLength(PropertyIterator.java:295)
	at org.apache.commons.jxpath.ri.model.beans.PropertyIterator.setPositionIndividualProperty(PropertyIterator.java:148)
	at org.apache.commons.jxpath.ri.model.beans.PropertyIterator.setPosition(PropertyIterator.java:127)
	at org.apache.commons.jxpath.ri.axes.ChildContext.setPosition(ChildContext.java:106)
	at org.apache.commons.jxpath.ri.axes.ChildContext.nextNode(ChildContext.java:89)
	at org.apache.commons.jxpath.ri.EvalContext.performIteratorStep(EvalContext.java:160)
	at org.apache.commons.jxpath.ri.EvalContext.hasNext(EvalContext.java:118)
	at org.apache.cocoon.forms.binding.RepeaterJXPathBinding.doLoad(RepeaterJXPathBinding.java:113)
	at org.apache.cocoon.forms.binding.JXPathBindingBase.loadFormFromModel(JXPathBindingBase.java:162)
	at org.apache.cocoon.forms.binding.ComposedJXPathBindingBase.doLoad(ComposedJXPathBindingBase.java:96)
	at org.apache.cocoon.forms.binding.ContextJXPathBinding.doLoad(ContextJXPathBinding.java:52)
	at org.apache.cocoon.forms.binding.JXPathBindingBase.loadFormFromModel(JXPathBindingBase.java:162)
	at org.apache.cocoon.forms.binding.JXPathBindingBase.loadFormFromModel(JXPathBindingBase.java:176)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:230)
	at org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1244)
	at org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:1134)
	at org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:190)
	at org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:138)
	at org.mozilla.javascript.continuations.InterpretedFunctionImpl.call(InterpretedFunctionImpl.java:121)
	at org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1244)
	at org.apache.cocoon.components.flow.javascript.fom.FOM_JavaScriptInterpreter.callFunction(FOM_JavaScriptInterpreter.java:755)
	at org.apache.cocoon.components.treeprocessor.sitemap.CallFunctionNode.invoke(CallFunctionNode.java:135)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
	at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
	at org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode.invoke(ActTypeNode.java:138)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.handleCocoonRedirect(ConcreteTreeProcessor.java:298)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.access$000(ConcreteTreeProcessor.java:47)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor$TreeProcessorRedirector.cocoonRedirect(ConcreteTreeProcessor.java:339)
	at org.apache.cocoon.environment.ForwardRedirector.redirect(ForwardRedirector.java:59)
	at org.apache.cocoon.components.flow.AbstractInterpreter.forwardTo(AbstractInterpreter.java:209)
	at org.apache.cocoon.components.flow.javascript.fom.FOM_JavaScriptInterpreter.forwardTo(FOM_JavaScriptInterpreter.java:894)
	at org.apache.cocoon.components.flow.javascript.fom.FOM_Cocoon.forwardTo(FOM_Cocoon.java:698)
	at org.apache.cocoon.components.flow.javascript.fom.FOM_Cocoon.jsFunction_sendPage(FOM_Cocoon.java:269)
	at inv8.invoke()
	at org.mozilla.javascript.FunctionObject.doInvoke(FunctionObject.java:523)
	at org.mozilla.javascript.FunctionObject.call(FunctionObject.java:438)
	at org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1244)
	at org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:1134)
	at org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:190)
	at org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:138)
	at org.mozilla.javascript.continuations.InterpretedFunctionImpl.call(InterpretedFunctionImpl.java:121)
	at org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1244)
	at org.mozilla.javascript.ScriptableObject.callMethod(ScriptableObject.java:1591)
	at org.apache.cocoon.components.flow.javascript.fom.FOM_JavaScriptInterpreter.handleContinuation(FOM_JavaScriptInterpreter.java:843)
	at org.apache.cocoon.components.treeprocessor.sitemap.CallFunctionNode.invoke(CallFunctionNode.java:123)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
	at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:243)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
	at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:243)
	at org.apache.cocoon.Cocoon.process(Cocoon.java:608)
	at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1123)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
	at java.lang.Thread.run(Unknown Source)

And I've double checked my OpenSessionInViewFilter is well setup and
initialized.
Does anyone know where it can come from ?

Thx in advance...

-- 
Sebastien ARBOGAST

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