Is it possible to get the associated persistence unit name of an EntityManager object? For example, you have @PersistenceContext( unitName="fooPU" ) private EntityManager em; Is it possible to ...

We have an application that has a number of entity classes for which there must be two tables. The tables are identical, with the only difference being the name. The common solutions offered here o...

In a web application using struts2 ejb hibernate, is it possible to tell the application to find or create an entity for a specific persistence-unit name, which is written in persistence.xml file, ...

I have a JavaEE project that makes use of multiple persistence units. Is there any way to specify which persistence unit a particular JPA Entity belongs to? Some entities are in one data source, wh...

I have a Java Web application that contains a Persistence unit. In this persistence unit I can select an existing data source or create a new data source. When I run this web application on the bui...

Context: Jboss5.1, MySql 5.0 I've tried a lot of possibilities .. a simple @GeneratedValue or other solution specifing explicitly the sequence generator, but also have the same problem... There is...

I use JPA persistence for my data models with Eclipselink as the persistence provider. I have a modular (OSGi) application and one of the modules contains the standard data model and a persistence ...

Some people, including me, have been struggling with merging entities from different modules (jars) into a single persistence unit (especially with JavaSE, for instance here JPA 2.0: Adding entity ...

I have configured two persistence units in my JPA/Hibernate configuration. Now i need to execute different import.sql for each persistence unit. How can I specify which import.sql should be execute...

I am trying to use 2 persistence units within the same transaction in a Java EE application deployed on Glassfish. The 2 persistence units are defined in persistence.xml, as follows: <persiste...