How can I resolve a class cast exception when opening the persistence.xml editor

[brlombar]

I just installed Eclipse Luna - specifically

Version: Luna Service Release 2 (4.4.2)

Build id: 20150219-0600

I also just installed JBoss Tolls version 4.2.2.Final form the eclipse marketplace.

When I try to open a persistence.xml file I get the following error:

java.lang.ClassCastException: org.jboss.tools.hibernate.jpt.ui.internal.persistence.details.HibernatePersistenceXmlUiDefinition cannot be cast to org.eclipse.jpt.jpa.ui.PersistenceResourceUiDefinition

If I uninstall the JBoss Tools the error goes away, but then I don't have the enhanced editing capability provided by JBoss Tools.

Is there any way to fix this?

Message was edited by: Bruce Lombardi In response to several posts, I have added a StackTrace, ScreenShot and zip of small Eclipse project. And I corrected the version to 4.2.2.Final. Note - The stack trace is from the original project, which I can't attache for many reasons. In the small project, the file does open without the stack trace, but only to a single pane editor (see screen shot).

[akazakov]

I also just installed JBoss Tolls version 4.4.2.Final form the eclipse marketplace.

You mean 4.2.2.Final, right?

[dgolovin]

Could you also attach or post full stacktrace for exception?  We could try to fix it and put into coming service release.

[koen.aers]

Hey Bruce,

It is important that you, just like what Denis suggests, attach the stack trace. But it would also be good to attach a minimal project that can be used to reproduce the issue and/or a description of the actions and the conditions that are needed to reproduce it. I have tried to reproduce this with a vanilla JPA 2.1 project without success.

Cheers,

Koen