[OPENJPA-546] Generates SQL update for unchanged entities within transaction

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 1.0.2
• Environment: OpenJPA 1.0.2; PostgreSQL 8.3.0 and probably for other RDBMS
• Assignee: Unassigned
• Reporter: Georgi Naplatanov
• Created: 27/Mar/08 06:46
• Updated: 09/Mar/10 18:35
• Resolved: 16/Apr/08 23:30

Description

OpenJPA generates and executes SQL update for unchanged entities within transaction.

Example:

factory = Persistence.createEntityManagerFactory("....",System.getProperties()) ;
em = factory.createEntityManager() ;
em.getTransaction().begin() ;
Query q = em.createQuery("SELECT ......... ");
List l = q.getResultList() ;
System.out.println(l.size()) ;
em.getTransaction().commit() ;
em.close() ;
factory.close() ;