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https://issues.apache.org/jira/browse/OPENJPA-2064?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Heath Thomann updated OPENJPA-2064:
-----------------------------------
Affects Version/s: (was: 2.2.0)
1.2.2
2.0.0
> Use of UpdateManager and SchemaFactory together may not yield expected
> results.
> -------------------------------------------------------------------------------
>
> Key: OPENJPA-2064
> URL: https://issues.apache.org/jira/browse/OPENJPA-2064
> Project: OpenJPA
> Issue Type: Bug
> Components: jdbc
> Affects Versions: 1.2.2, 2.0.0
> Reporter: Heath Thomann
> Assignee: Heath Thomann
> Priority: Minor
>
> Take the issue and solutions described
> https://issues.apache.org/jira/browse/OPENJPA-1936. The JIRA describes a
> situation where a constraint violation can occur. One of the solutions is to
> set the following property:
> <property name="openjpa.jdbc.SchemaFactory"
> value="native(ForeignKeys=true)"/>
> However, the same constraint violation can reoccur which the above
> SchemaFactory property is used in combination with the following
> UpdateManager (UM) setting:
> <property name="openjpa.jdbc.UpdateManager" value="operation-order"/>
> When a user sets
> 'operation-order' on the UM, it tells the UM to specifically honor the order of the operations (e.g.
> inserts, removes). For example, the 'Parent' entity described in
> OPENJPA-1936 may be removed by the user's app (a remove operation) before the
> 'Child' entity. Using just the SchemaFactory setting alone, OpenJPA would
> detect the constraint violation and actually order the deletes such that the
> 'Child' entity is removed first, then the 'Parent' (even though the user's
> operations where the opposite). However, when the above UM property is used,
> the order in which the user's code executes the remove operations will be
> honored. This can lead to confusion, that is, the user may expect the
> SchemaFactory to always detect, and handle, a database constraint.
> While there is nothing wrong with the two properties being used together, it
> would be helpful for OpenJPA to detect that a user is using the above two
> properties and log a warning in the event a constrain violation is detected
> at runtime. This JIRA will be used to investigate such a warning. A test
> will soon follow which will reproduce a constrain violation when the two
> properties are used together.
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