1 Reply Latest reply: May 21, 2013 1:39 PM by chris_delahunt RSS

    Best way to implement auto increment in JPA.

      What is the best way to implement auto increment in JPA so that it will support all databases such as MySQL, MSSQL Server, Oracle etc. ? Or is there any way to set auto increment strategy in common place such as persistence.xml? Please help...
        • 1. Re: Best way to implement auto increment in JPA.
          All JPA strategies require something (like a table or sequence object) be in the database, with table sequencing being the most portable, though EclipseLink does allow custom sequence stratgies where you could use something else, such as the UUID. Sequencing is described here described here http://wiki.eclipse.org/EclipseLink/Examples/JPA/PrimaryKey with a custom UUID example shown here http://wiki.eclipse.org/EclipseLink/Examples/JPA/CustomSequencing .