[News.eclipse.technology.eclipselink] JPA: adding entities to EntityMana

[Rüdiger Herrmann <rherrmann@xxxxxxxxxxxxxx>]

Hi,

my understanding of how to register entities that should participate 
in the persistence mechanism, is that they need to be declared in 
persistence.xml.

As in my case, there is an extension point to contribute entity 
classes, I was looking for a way to programmatically add/register 
entity classes to an EntityManagerFactory
All entity classes are known before the EntityManagerFactory has to 
be created, but not at development-time.

I had a piece of code like the following in mind:

  emf = Persistence.createEntityManagerFactory( "pu" );
  // cast factory to EclipseLink implementation or similar
  EclipseLinkEMF factory = emf;
  // read class names from extension registry
  Class[] entityCalsses = ...
  for( int i = 0; i < entityClasses.length; i++ ) {
    // make entity class known by EntityManagerFactory
    factory.registerEntityClass( entityClasses[ i ] );
  }


Thanks in advance
Rüdiger