4 Replies Latest reply on Oct 30, 2007 1:30 PM by jjarkko

from different persistence mana

jjarkko Oct 29, 2007 6:32 PM

Hello,
I'm trying to figure out how use different entity managers with s:convertEntity.

This is from Admin page which uses the adminEntityManager (EM without any restriction filters).

<h:selectManyListbox value="#{unit.manager}" size="4">
<s:selectItems value="#{managers}" var="yp" label="#{yp.name}" />
<s:convertEntity />
</h:selectManyListbox>

Now, this fails because the s:convertEntity has been configured to use (because it's also used elsewhere/other pages) restrictedEntityManager in components.xml.

Is there a way to use "multiple" EntityManagers aka have more than one entityConverter? I couldn't find a way to do that.

org.hibernate.TransientObjectException: The instance was not associated with this session
at org.hibernate.impl.SessionImpl.getIdentifier(SessionImpl.java:1375)
at org.jboss.seam.persistence.HibernatePersistenceProvider.getId(HibernatePersistenceProvider.java:51)
at org.jboss.seam.framework.EntityIdentifier.<init>(EntityIdentifier.java:15)
at org.jboss.seam.ui.EntityConverterStore.put(EntityConverterStore.java:61)
at org.jboss.seam.ui.EntityConverter.getAsString(EntityConverter.java:63)

components.xml:

<component name="org.jboss.seam.ui.entityConverter">
 <property name="entityManager">#{restrictedEntityManager}</property>
</component>


<core:managed-persistence-context name="restrictedEntityManager">
 <core:filters>
 <value>#{disabledFilter}</value>
 </core:filters>
</core:managed-persistence-context>

<core:managed-persistence-context name="adminEntityManager">
</core:managed-persistence-context>

1. Re: Multiple <s:convertEntity /> from different persistence

pmuir Oct 30, 2007 12:59 PM (in response to jjarkko)

RTFM: http://docs.jboss.org/seam/2.0.0.CR3/reference/en/html/controls.html#controls.tags
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2. Re: Multiple <s:convertEntity /> from different persistence

jjarkko Oct 30, 2007 1:11 PM (in response to jjarkko)

Sorry, I was only reading http://docs.jboss.org/seam/1.2.1.GA/reference/en/html/controls.html#controls.tags
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3. Re: Multiple <s:convertEntity /> from different persistence

jjarkko Oct 30, 2007 1:29 PM (in response to jjarkko)
And actually I solved the issue by using the unrestricted entity manager for getting the list and the use the restricted entity manger to load the entity.

public List <Manager> getManagers() { String query = "from Manager"; // use the unrestricted entity mananger to get the list Query q = adminEntityManager.createQuery(query); return = q.getResultList(); }

And later, when the admin is updating the entity
public Manager modify(Manager selectedManager) { return unrestrictedEntityManager.find(Manager.class, selectedManager.getId()); }

EntityManager.find() does load the entity, even if manager.deleted is not null (and deleted is less than todate). So the filter is not applied when using EntityManager.find(), but I'll need to check that this is always true.

And this works because s:convertEntity also uses the same unrestrictedEntityManager.
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4. Re: Multiple <s:convertEntity /> from different persistence

jjarkko Oct 30, 2007 1:30 PM (in response to jjarkko)
Ops, typo.
public Manager modify(Manager selectedManager) { return restrictedEntityManager.find(Manager.class, selectedManager.getId()); }
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