1. How can I get information out of a junction table using JPA/EclipseLink? stackoverflow.com
I have the following many-to-many mapping:
2. Strange JPA behaviour: tables cleaned at app boot stackoverflow.com
Almost all is in the title... Persistence is working fine when app launched, and row are still in DB when the app is closed, but once app is loaded, rows got ...
3. EntityManager.merge() does not create table record stackoverflow.com
The following code fails to create a new record reliably.
Here's the code for the transfer record:
4. JPA and JPQL: NoResultException when selecting from multiple tables where one value is null stackoverflow.com
I'm using Java EE 6 and query a database using JPA's javax.persistence.Entitymanager. I have a JPQL query code snippet that looks like something like this: