The Java Persistence API is a really neat thing but it can drive you up-the-wall when you’re trying to setup your entities and annotations to match your desired database schema. In this example, I’ll cover a seemingly simple case of having a many-to-many relationship between two entities with additional columns in the association table. [...]
One of the somewhat unclear aspects of the Java Persistence API is exactly how Java entities are populated from database tables. Those of you familiar with Hibernate probably know that you require a setter method in your Java POJO which corresponds to the column that you want mapped. JPA lifts that requirement and [...]
Update: As of June 6th, 2007, this is now in the Codehaus Sandbox repository.
I get an email once a week asking the whereabouts of the properties plugin for Maven so I thought I’d put it up somewhere.
If you think this is useful, vote in favor of it – Codehaus JIRA MOJO-535.
It has three goals (for [...]
The two dozen ORM frameworks listed on java-source.net don’t even count the numerous homegrown ones used so passionately by their makers that they’re blind to all the other crap that’s out there. There’s simply too many bored developers trying to come up with a specific solution to a general problem and if it weren’t [...]
