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https://issues.apache.org/jira/browse/CAY-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15878745#comment-15878745
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Matt Watson commented on CAY-2242:
----------------------------------
Thanks for the quick resolution. I had a fix ready that I was going to clean up
this morning, but I like your solution better :)
> Vertical Inheritance: Cannot Insert Record With Multiple Flattened
> Relationships
> --------------------------------------------------------------------------------
>
> Key: CAY-2242
> URL: https://issues.apache.org/jira/browse/CAY-2242
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 4.0.M4
> Reporter: Matt Watson
> Assignee: Nikita Timofeev
> Labels: inheritance, multiple, relationship, vertical
> Fix For: 4.0.M5
>
> Attachments: CAY_2242_breaking_test.patch
>
>
> Copied and directly related to issue CAY-2122
> When using the following DbEntities:
> IV_OTHER (id, name)
> IV_BASE (id, type, name)
> IV_IMPL (id, attr1, attr2, other1_id, other2_id) (vertically inherits IV_BASE)
> all fields are non-null
> We end up with ObjEntities:
> IvOther
> IvBase (abstract)
> IvImpl extends IvBase
> When running the following code:
> {code:java}
> IvOther other1 = context.newObject(IvOther.class);
> other1.setName("other1");
> IvOther other2 = context.newObject(IvOther.class);
> other2.setName("other2");
> IvImpl impl = context.newObject(IvImpl.class);
> impl.setName("Impl 1");
> impl.setAttr1("attr1");
> impl.setAttr2("attr2");
> impl.setOther1(other1);
> impl.setOther2(other2);
> context.commitChanges();
> {code}
> Committing this errors in the database, because its trying to insert into the
> IV_IMPL table with a NULL value for OTHER2_ID
> The original issue (and test) was referring to an Entity that only had 1
> flattened relationship. I recently had to add another relationship to this
> Entity, and discovered the same bug pops up again. This time its because the
> new code does not handle merging the flattenedArcKeys if more than one exists
> per ObjectId.
> I will upload the breaking test shortly.
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