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https://issues.apache.org/jira/browse/OPENJPA-2290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard Zowalla resolved OPENJPA-2290.
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Resolution: Fixed
Already fixed on master: 67c6a78eb (on master): BrokerImpl.isDetached now
returns false without a find when isIdentityAssigned sees a null PK field
(BrokerImpl.java:4943-4946,4957). Closing; please reopen if this still happens
with OpenJPA 4.x.
> merge new entity will search DB with 0 entity id.
> -------------------------------------------------
>
> Key: OPENJPA-2290
> URL: https://issues.apache.org/jira/browse/OPENJPA-2290
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 2.2.0
> Reporter: chunlinyao
> Priority: Minor
>
> I have a entity with Long id. When I merge a new entity. OpenJPA always query
> db with id = 0.
> The new entity's id == null, Why it query the db and translate the null to 0?
> The ApplicationIds.create() returns 0 LongId on a pc with null id. This cause
> openjpa query db with 0 id. When there have a id==0 entity in the db you will
> have some trouble.
> If I use GenerateType.IDENTITY with hsqldb, the id will generated start from
> 0. So If I run merge(new Entity()) two times, I only got one entity.
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