Hibernate Many-To-One Foreign Key Default 0

Posted by user573648 on Stack Overflow See other posts from Stack Overflow or by user573648
Published on 2011-01-13T03:48:54Z Indexed on 2011/01/13 3:53 UTC
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java

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hibernate

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orm

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many-to-one

I have a table where the the parent object has an optional many-to-one relationship. The problem is that the table is setup to default the fkey column to 0.

When selecting, using fetch="join", etc-- the default of 0 on the fkey is being used to try over and over to select from another table for the ID 0. Of course this doesn't exist, but how can I tell Hibernate to treat a value of 0 to be the same as NULL-- to not cycle through 20+ times in fetching a relationship which doesn't exist?

<many-to-one name="device" lazy="false" class="Device" not-null="true" access="field" cascade="none" not-found="ignore">
<column name="DEVICEID" default="0" not-null="false"/>

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