[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4901) One should not map IdClass properties in the mapping

[Emmanuel Bernard (JIRA)]

One should not map IdClass properties in the mapping
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                 Key: HHH-4901
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4901
             Project: Hibernate Core
          Issue Type: Improvement
          Components: core
    Affects Versions: 3.5.0-Beta-4
            Reporter: Emmanuel Bernard


A better fix for HH-4895 is explained below

AbstractEntityPersister#1847
we try and map the identifier with "id" (as no property named "id" is present)
The path is then nullified when calling initComponentPropertyPaths (it's not a qualified path)
We end up "remapping" the emp property but the one from the IdClass which is returned by getIdentifierType() in AbstractEntityPersister 

HbmBinder does map it twice but since we don't have the type mismatch between idclass and the actual property hosted by the entity we don't fall into this bug

Somehow, we should not run AbstractEntityPersister#1847 if getIdentiierType() is the IdClass (ie there is an identifier mapper
but I don't know how to detect that)

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