How to use composite entities which driven by different PU via hibernate

Question

Hi experts,
There are 2 different persistence unit in my project.
PU_A: Application entities, that can execute all crud operations.
PU_B: This one has some views which contains outside data. I can just read data from here
But i want to create foreign key in some entities which are in PU_A by using immutable-entity which managed by PU_B persistence-unit.
If you could view on following snippets. I have IncomingPaperwork entity which is driven by PU_A and ProjectView which is driven by PU_B.
After i applied this issue; When deploy the application exception that is below occured :
30-Jan-2013 15:13:05 o'clock EET> <Warning> <Deployer> <BEA-149078> <Stack trace for message 149004
weblogic.application.ModuleException:
     at weblogic.ejb.container.deployer.EJBModule$1.execute(EJBModule.java:326)
     at weblogic.deployment.PersistenceUnitRegistryInitializer.setupPersistenceUnitRegistries(PersistenceUnitRegistryInitializer.java:62)
     at weblogic.servlet.internal.WebAppModule.initPersistenceUnitRegistry(WebAppModule.java:411)
     at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:365)
     at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:176)
     Truncated. see log file for complete stacktrace
Caused By: org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.acme.model.entity.IncomingPaperwork.projectView references an unknown entity: com.acme.integrationmodel.entity.ProjectView
     at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java:81)
     at org.hibernate.cfg.AnnotationConfiguration.processEndOfQueue(AnnotationConfiguration.java:456)
     at org.hibernate.cfg.AnnotationConfiguration.processFkSecondPassInOrder(AnnotationConfiguration.java:438)
     at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:309)
     at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1162)
     Truncated. see log file for complete stacktrace
>
[03:13:05 PM] #### Deployment incomplete. ####
Is there a way to achieve this? Any suggestions?
Thanks in advance
___persistence.xml___
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="PU_A" transaction-type="JTA">
<description>This unit manages all application entities</description>
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/A_DS</jta-data-source>
<class>com.acme.model.entity.IncomingPaperwork</class>
<properties>
<property name="hibernate.jndi.url" value="t3://localhost:7101"/>
<!--DataSource-->
<property name="hibernate.connection.datasource"
value="jdbc/A_DS"/>
<property name="hibernate.transaction.manager_lookup_class"
value="org.hibernate.transaction.WeblogicTransactionManagerLookup"/>
<property name="hibernate.dialect"
value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.use_sql_comments" value="true"/>
<property name="hibernate.current_session_context_class" value="jta"/>
<property name="hibernate.archive.autodetection" value="jar,class"/>
</properties>
</persistence-unit>
<persistence-unit name="PU_B" transaction-type="JTA">
<description>This unit manages all integration entities</description>
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/B_DS</jta-data-source>
<class>com.acme.integrationmodel.entity.ProjectView</class>
<properties>
<property name="hibernate.jndi.url" value="t3://localhost:7101"/>
<!--DataSource-->
<property name="hibernate.connection.datasource"
value="jdbc/B_DS"/>
<property name="hibernate.transaction.manager_lookup_class"
value="org.hibernate.transaction.WeblogicTransactionManagerLookup"/>
<property name="hibernate.dialect"
value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.use_sql_comments" value="true"/>
<property name="hibernate.current_session_context_class" value="jta"/>
</properties>
</persistence-unit>
</persistence>
___IncomingPaperwork.class___
import com.arsivist.structure.BaseEntity;
import com.acme.integrationmodel.entity.ProjectView;
import com.acme.model.entity.listener.EntityListener;
import com.acme.model.entity.listener.IncomingPaperworkListener;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
@Entity(name = "IncomingPaperwork")
@Table(name = "INCOMINGPAPERWORKS")
@SequenceGenerator(name = "INCOMINGPAPERWORK_SEQ", sequenceName = "INCOMINGPAPERWORK_SEQ", allocationSize = 1)
@EntityListeners( { EntityListener.class, IncomingPaperworkListener.class })
public class IncomingPaperwork extends BaseEntity
private Company company;
private ProjectView projectView;
public IncomingPaperwork()
entityName = "IncomingPaperwork";
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "INCOMINGPAPERWORK_SEQ")
@Column(name = "ID")
public int getId()
return id;
public void setId(int id)
this.id = id;
public void setCompany(Company company)
this.company = company;
@ManyToOne(targetEntity = com.acme.model.entity.Company.class, cascade = { })
@JoinColumn(name = "COMPANYID", nullable = false)
public Company getCompany()
return company;
public void setProjectView(ProjectView projectView)
this.projectView = projectView;
@ManyToOne(targetEntity = com.acme.integrationmodel.entity.ProjectView.class, cascade = { })
@JoinColumn(name = "PROJECTVIEWID")
public ProjectView getProjectView()
return projectView;
___ProjectView.class___
import com.arsivist.structure.BaseEntityView;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import org.hibernate.annotations.Immutable;
import org.hibernate.annotations.Subselect;
@Entity(name = "ProjectView")
@Immutable
@Subselect("SELECT * FROM ProjectView")
public class ProjectView extends BaseEntityView
private String code;
private String name;
public ProjectView()
entityName = "ProjectView";
public ProjectView(int id, String name)
entityName = "ProjectView";
this.id = id;
this.name = name;
@Id
@Column(name = "ID")
public int getId()
return id;
public void setId(int id)
this.id = id;
public void setCode(String code)
this.code = code;
@Column(name = "CODE")
public String getCode()
return code;
public void setName(String name)
this.name = name;
@Column(name = "NAME")
public String getName()
return name;
@Override
public String toString()
return "" + getName();
Edited by: webyildirim on Jan 30, 2013 5:36 AM

Answer 1

Not quite what I meant - I was suggesting you load the entity immediately after reading it from PU_B, or anytime before associating it into PU_A, so before the merge. What you have not shown though is any code on how you are obtaining IntegrationDepartment and integrating it into PU_A, or what you mean by it is returning a refreshed version of Topic. This problem could also be the result of how your provider works internally - this is a TopLink/EclipseLink forum post so I cannot really tell you why you get the exception other than it would be expected to work as described with EclipseLink as the JPA provider.
So the best suggestions I can come up with are prefetch your entity, try posting in a hibernate forum, or try using EclipseLink/TopLink so someone here might be better able to help you with any problems that arise.
Best Regards,
Chris