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SessionClosed, EntityManager

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kooudy

Post subject: SessionClosed, EntityManager

Posted: Tue Aug 07, 2007 7:15 am

Newbie

Joined: Thu Jun 21, 2007 9:24 am
Posts: 7

Hello, I have:

Code:

@Stateful
@Scope(ScopeType.SESSION)
@Name("project")
public class Project implements ProjectLocalIF {
  @PersistenceContext
  private EntityManager em;

  ...
}

There are beans with OneToMany and ManyToMany EAGER fetching.
I want to LAZY fetching but:

When I try to access attributes LazyInitialization is thrown (session closed).

But I don't close any session - I work only with EntityManager inside statefull bean.

Can somebody give some point or idea.

Thank you very much

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kooudy

Post subject:

Posted: Tue Aug 07, 2007 11:02 am

Newbie

Joined: Thu Jun 21, 2007 9:24 am
Posts: 7

Similar threads:
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4066873#4066873
http://osdir.com/ml/user-groups.ajug.members/2007-01/msg00035.html

Code:

16:57:15,093 ERROR [LazyInitializationException] failed to lazily initialize a collection of role: cz.test.specializationBeans, no session or session was closed
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: cz.test.specializationBeans, no session or session was closed
        at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
        at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
        at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97)
        at org.hibernate.collection.PersistentSet.isEmpty(PersistentSet.java:146)
        at org.apache.commons.el.EmptyOperator.apply(EmptyOperator.java:134)
        at org.apache.commons.el.UnaryOperatorExpression.evaluate(UnaryOperatorExpression.java:163)
        at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:383)
        at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:1075)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:189)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:98)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:442)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:216)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:98)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:442)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:419)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:440)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:419)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:75)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:442)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:216)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:98)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:442)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:419)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:440)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:419)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:75)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
        at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:442)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:216)
        at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:98)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)

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