[jboss-user] [JBoss Seam] - Re: @Filter example

[anescu]

Ok, I have some progress:

1) I defined 2 entity managers in components.xml:
 <core:managed-persistence-context name="entityManager"
  |       auto-create="true"
  |       persistence-unit-jndi-name="java:/entityManagerFactory"/>
  | 
  | <core:filter name="hubFilteredChannels">
  |    <core:name>hubFilteredChannels</core:name>
  |    <core:parameters>
  |       <key>currentHub</key>
  |       <value>#{currentHub}</value>
  |    </core:parameters>
  | </core:filter>
  | 
  | <core:managed-persistence-context name="filteredEntityManager"
  |          auto-create="true"
  |          entity-manager-factory="#{entityManager}">
  |    <core:filters><value>#{hubFilteredChannels}</value></core:filters>
  | </core:managed-persistence-context>

2) Then I override the getPersistenceContextName in my entity List class: 
@Override
  | protected String getPersistenceContextName()
  | {
  |    System.out.println( "### debug step" );
  |    return "filteredEntityManager";
  | }

3) Now i can deploy and browse the other parts of the application as before using the filter, but i get an exception when opening the entity list screen, something about a ClassCastException:


Caused by: java.lang.ClassCastException: org.jboss.seam.persistence.EntityManagerProxy
  | 	at org.jboss.seam.core.ManagedPersistenceContext.getEntityManagerFactoryFromJndiOrValueBinding(ManagedPersistenceContext.java:169)
  | 	at org.jboss.seam.core.ManagedPersistenceContext.initEntityManager(ManagedPersistenceContext.java:77)
  | 	at org.jboss.seam.core.ManagedPersistenceContext.getEntityManager(ManagedPersistenceContext.java:105)
  | 	at sun.reflect.GeneratedMethodAccessor137.invoke(Unknown Source)

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