[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5405) many-to-one id="true" is not picked up by hibernate in orm.xml

[Rolf Thunbo (JIRA)]

many-to-one id="true" is not picked up by hibernate in orm.xml
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                 Key: HHH-5405
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5405
             Project: Hibernate Core
          Issue Type: Bug
          Components: metamodel
    Affects Versions: 3.5.2
            Reporter: Rolf Thunbo


When making a composite key referring to a target entity something like the following ORM XML should be defined:

<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings xmlns="http://java.sun.com/xml/ns/persistence/orm"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_2_0.xsd"
version="2.0">
<entity class="Subscription">
<table name="SUBSCRIPTION"/>
<id-class class="SubscriptionKey"/>
<attributes>
...
<many-to-one name="owner" id="true">
<join-column name="FK_SUBSCRIBER_CVR"/>
</many-to-one>
</attributes>
</entity>
</entity-mappings>

But for some reason the id attribute is not picked up by Hibernate, and therefore it does not interpret the relation as a primary key. A workaround is to add a id tag referring to the same property, but it would be nice of Hibernate would pick up the id attribute on the many-to-one relation.

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