How do I catch the constraint violation exception from EclipseLink?

Question

I am using EclipseLink in my web application, and I am having a hard time gracefully catching and handling Exceptions it generates. I see from this thread what seems to be a si

Answer 1

Edit your persistence.xml adding the following property:

property name="eclipselink.exception-handler" value="your.own.package.path.YourOwnExceptionHandler"

Now create the class YourOwnExceptionHandler (on the correct package). It requires to implement org.eclipse.persistence.exceptions.ExceptionHandler.

Create a non argument constructor and the required method handleException(...).

Inside this method, you can catch the exceptions!