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Re: [eclipselink-users] Entity name must be unique in a persistence unit 
Hi Leon,
Regarding the erroneous error messages in Eclipse, I think it is possible that you are using WTP 2.0 (Dali JPT 1.0) and have not updated to the latest maintenance versions. Try looking for updates in the update manager, and pick up the latest WTP updates, including Dali JPT 1.0.2 and any other patches, and these messages should go away. We've improved our handling of classes being listed or not listed in various places. 

Neil

Leon Derks wrote:

Hi Guy,
True, but then I get several "This mapped class is not contained in any persistence unit" alerts in Eclipse. 
But at runtime it works fine.

Leon



Guy Pelletier wrote:

Hi Leon,
The orm.xml is discovered automatically so you don't need to add the <class> specifications either if those classes are defined in the orm.xml. 

Cheers,
Guy

----- Original Message ----- From: "Leon Derks" <leon.derks@xxxxxxxxxx>
To: "Guy Pelletier" <guy.pelletier@xxxxxxxxxx>; "EclipseLink User Discussions" <eclipselink-users@xxxxxxxxxxx> 
Sent: Tuesday, April 15, 2008 3:28 PM
Subject: Re: [eclipselink-users] Entity name must be unique in a persistence unit 



Hi Guy,
Indeed removing <mapping-file>META-INF/orm.xml</mapping-file> and adding domain classes with <class></class> solves the problem. 

I will enter the bug.

Leon

Guy Pelletier wrote:

This is a bug.
In the mean time remove the <mapping-file>META-INF/orm.xml</mapping-file> specification from your persistence.xml and please enter a bug. 

Cheers,
Guy
----- Original Message ----- From: "Leon Derks" <leon.derks@xxxxxxxxxx> 
To: "EclipseLink User Discussions" <eclipselink-users@xxxxxxxxxxx>
Sent: Tuesday, April 15, 2008 11:19 AM
Subject: [eclipselink-users] Entity name must be unique in a persistence unit 



Hello again,

I added an id property in Every class.
When I configure the persistence.xml file with hibernate everything works fine. 

But when I configure it for eclipselink I get an error (see below)

Below you see a part of my persistence.xml

Persistence xml configuration
       ......
       ......
       <!-- EclipseLink -->

<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
       <mapping-file>META-INF/orm.xml</mapping-file>
       <properties>
<property name="eclipselink.jdbc.driver" value="oracle.jdbc.driver.OracleDriver"/> <property name="eclipselink.jdbc.url" value="jdbc:oracle:thin:@localhost:1521:xe"/> 
           <property name="eclipselink.jdbc.user" value="pli"/>
           <property name="eclipselink.jdbc.password" value="pli"/>
<property name="eclipselink.target-database" value="org.eclipse.persistence.platform.database.oracle.Oracle10Platform"/> <property name="eclipselink.logging.level" value="FINEST"/> 
       </properties>
        <!-- Hibernate
       <provider>org.hibernate.ejb.HibernatePersistence</provider>
       <mapping-file>META-INF/orm.xml</mapping-file>
       <properties>
           <property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true"/> <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" /> <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver"/> <property name="hibernate.connection.url" value="jdbc:oracle:thin:@localhost:1521:xe"/> <property name="hibernate.connection.username" value="pli"/> <property name="hibernate.connection.password" value="pli"/> 
        </properties>
       -->
   ......
   ......
Internal Exception: Exception [EclipseLink-7237] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.ValidationException Exception Description: Entity name must be unique in a persistence unit. Entity name [CatalogProduct] is used for the entity classes [*****.model.CatalogProduct] and [*****.model.CatalogProduct]. at org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:121) at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:87) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60) at com.philips.lighting.guidecontrol.model.ImportTest.<init>(ImportTest.java:13) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
   at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
   at junit.framework.TestSuite.createTest(TestSuite.java:131)
   at junit.framework.TestSuite.addTestMethod(TestSuite.java:114)
   at junit.framework.TestSuite.<init>(TestSuite.java:75)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestLoader.getTest(JUnit3TestLoader.java:102) at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestLoader.loadTests(JUnit3TestLoader.java:59) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:445) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196) 

Leon
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