[jira] Updated: (OPENJPA-635) child record foreign key column set to null on deletion of parent record even foreign key delete action is set to "restrict"

["Xiaoqin Feng (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiaoqin Feng updated OPENJPA-635:
---------------------------------

    Priority: Trivial  (was: Major)

The original problem happened on JDO after migrate Kodo3.1 to Kodo4.1.
When I try to create a  corresponding automated openJPA test, I found the problem doesn't happen.
It doesn't go through this part of logic in RelationToManyInverseKeyFieldStrategy.delete() for openJPA case.

So I downgrade the bug to trivial.

Anyway I will attach the patch to make it work when column "nullable=false" is not set  and FK  delete/update action is restrict.


> child record foreign key column set to null on deletion of parent record even foreign key delete action is set to "restrict"
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-635
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-635
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jdbc
>    Affects Versions: 1.1.0
>         Environment: Windows
>            Reporter: Xiaoqin Feng
>            Priority: Trivial
>         Attachments: openjpa-635.patch
>
>
> When using an inverse key collection mapping, if you delete the parent 
> object, the FK column of the corresponding child record(s) are set to null. 
> If there is a null constraint on the column (as is normally the case in a FK 
> column), this will result in a null constraint error.  But we expect to get FK constraint error.
> For example,
>     @ManyToOne(optional=false)
>     @JoinColumn(name="PARENT_ID", nullable=false)
>     @ForeignKey
>     private OneManyParent parent;
> If we set  "nullable=false" in JoinColumn,  then it throws FK constraint exception as expected.
> But since the default deleteAction value for  "ForeignKey" annotation is "restrict", even "nullable=false" is not set, it should behave as "restrict".
> Note: for "Column" and "JoinColumn", the default value is "nullable=true".
> I checked RelationToManyInverseKeyFieldStrategy.delete(), ForeignKey deleteAction is not evaluated at all. It only check if Column is nullable.
> I will try to attach test case soon.

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