Mike questions

Mike answers

• Nullable Date column merge problem
• How do I express a polymorphic association in JPA?
• JPA and GregorianCalendar
• How to do a timestamp comparison with JPA query?
• Is there a way to change the JPA fetch type on a method?
• JPA EntityManager: Why use persist() over merge()?
• Logging JPA SQL with Weblogic 10.3