1. Persisting a new but identical entity with JPA reporting duplicate entry stackoverflow.com
I have a JPA project connected to a MySQL database where my entity object is mapped to a table with a constraint on 2 columns. That is:
2. What is the proper way to ensure EntityManager connections are closed? stackoverflow.com
There are 19 methods in our DAO layer, each is some variation of this:
3. EntityManager.find method leading to MySQLIntegrityConstraintViolationException stackoverflow.com
When I execute
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'date' in field list is ambiguousThe class (Profile) I'm trying to find has a bi-directional ...
4. Can I share a persistence entity manager factory across multiple JADE agents stackoverflow.com
I've got a container of JADE agents, one of which currently interfaces with a mysql database using hibernate/persistence and I now want to extend the database access to other agents - ...