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Editorial Team
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Asked: 2026-05-20T12:36:51+00:00

I am looking for a way to save or update records, according to the

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I am looking for a way to save or update records, according to the table’s unique key which is composed of several columns).

I want to achieve the same functionality used by INSERT ... ON DUPLICATE KEY UPDATE – meaning to blindly save a record, and have the DB/Hibernate insert a new one, or update the existing one if the unique key already exists.

I know I can use @SQLInsert( sql="INSERT INTO .. ON DUPLICATE KEY UPDATE"), but I was hoping not to write my own SQLs and let Hibernate do the job. (I am assuming it will do a better job – otherwise why use Hibernate?)

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  1. Editorial Team

    This doesn’t really sound like a clean approach to me. It would be better to first see if an entity with given key(s) exists. If so, update it and save it, if not create a new one.

    EDIT

    Or maybe consider if merge() is what you’re looking for:

    • if there is a persistent instance with the same identifier currently associated with the session, copy the state of the given object onto the persistent instance
    • if there is no persistent instance currently associated with the session, try to load it from the database, or create a new persistent instance
    • the persistent instance is returned
    • the given instance does not become associated with the session, it remains detached

    < http://docs.jboss.org/hibernate/core/3.3/reference/en/html/objectstate.html

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