JPQL inconsitency between hibernate and eclipselink

Question

I have the following query that works under Hibernate but not under eclipse:

select o from Organisation o where o.code=:code and o.type=:type

It is not clear to me why this is the case, I was hoping someone else could elaborate for us. The error being returned is:

Caused by: java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager: 
Exception Description: Error compiling the query [select o from Organisation o where  o.code=:code and o.type=:type]. Unknown entity type [Organisation].

We have made no other changes apart from switching the provider class in the persistence.xml file to indicate we are now using eclipselink.

Answer 1

Looks like EclipseLink is not scanning the portion of your JAR files/classes that contain the Organisation class. Declare it explicitly in persistence.xml and see what happens:

<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="YourPersUnit">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>

    <class>foo.bar.Organisation</class>
</persistence-unit>
</persistence>