Discussions

EJB programming & troubleshooting: Handling auto-incrementing field as primary key in cmp ejb

Bookmark and Share Get thread feed

  1. Handling auto-incrementing field as primary key in cmp ejb (2 messages)

    • Posted by: Nic Holbrook
    • Posted on: November 21 2001 10:36 EST
    I was just wondering if there is anything special that needs to be done in handling this situation... On this table, the database auto-increments and assigns a value to the primary key field on create... Will the cmp ejb just return this value on a create call, or is there anything special that needs to be done to handle this situation properly?

    Thanks

    Nic
    Reply to this

    Threaded Messages (2)

  2. Handling auto-incrementing field as primary key in cmp ejb[ Go to top ]

    Forget the combination of autocounter fields and CMP. It does not work and there has a lot written of lines been written here about the generation of primary keys for CMP beans.
    Reply to this Reply to original

  3. Handling auto-incrementing field as primary key in cmp ejb[ Go to top ]

    Nic,

    We are trying to do the same thing. It seems that auto-generated primary keys are not officially supported with EJB 2.0 CMP, but several vendors do support it. You might want to check out the following:

    http://www.mail-archive.com/ejbinterest at java dot sun dot com/msg19000.html

    http://edocs.bea.com/wls/docs61/ejb/cmp.html#1066165

    Good luck!

    Rick
    Reply to this Reply to original