@ Override public EntityManager createEntityManager ( Map arg0 ) { if ( TraceComponent . isAnyTracingEnabled ( ) && tc . isDebugEnabled ( ) ) Tr . debug ( tc , "createEntityManager : " + this ) ; throw new UnsupportedOperationException ( "This operation is not supported on a pooling EntityManagerFactory." ) ; }
Pooled entity managers have their properties already defined . A provider exploiting the pool cannot use this method .