[hibernate-issues] [Hibernate-JIRA] Created: (HHH-3853) one-to-one mapping doesn support Primary Key Association

[Amar Singh (JIRA)]

one-to-one mapping doesn support Primary Key Association
--------------------------------------------------------

                 Key: HHH-3853
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3853
             Project: Hibernate Core
          Issue Type: Bug
          Components: envers
         Environment: Hibernate - core 3.4.0-SNAPSHOT, Hibernate - envers (trunk build from today)
            Reporter: Amar Singh
         Attachments: one-to-one-pk.zip

one-to-one mapping with primary key association doesn't seem to be working. Eg.

Code:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
                                   "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="org.hibernate.envers.test.integration.onetoone.bidirectional" default-lazy="false">
 <class name="BidirectionalRefIngPK" table="BIDIRECTIONAL_REFERENCING_ENTITY">
  <id name="id" type="long" column="BIDIRECTIONAL_REFERENCING_ID" >
   <generator class="foreign">
    <param name="property">reference</param>
   </generator>
  </id>
  <property name="data"/>
  <property column="BIDIRECTIONAL_REFERENCING_ID" generated="never" insert="false" lazy="false" name="id" type="long" update="false"/>  
  <one-to-one name="reference" cascade="save-update" class="BidirectionalRefEdPK" constrained="true" />
 </class>
 
 <class name="BidirectionalRefEdPK" table="BIDIRECTIONAL_REFERENCED_ENTITY">
  <id name="longId" type="long" column="BIDIRECTIONAL_REFERENCED_ID">
   <generator class="native"/>
  </id>
  <property name="data"/>
  <one-to-one name="referencing" cascade="all" class="BidirectionalRefIngPK" />
 </class>
</hibernate-mapping>

When we try to load a BidirectionalRefIngPK, the underlying query invokes RelatedAuditExpression and since its not a foreign-key based one-to-one association the loading fails in method addToQuery of RelatedAuditExpression at line 52 (relatedEntity==null) with the following exception:
Code:

"This criterion can only be used on a property that is a relation to another property."

TO REPRODUCE
~~~~~~~~~~~~~

Please find a zip file attached which has four files:

- BidirectionalPrimaryAssociation.java (actual testng test case)
- BidirectionalRefEdPK.java (Entity 1)
- BidirectionalRefIngPK.java (Entity 2)
- mappings.hbm.xml

Please put the three java files in its package (org.hibernate.envers.test.integration.onetoone.bidirectional)  and the mapping file in src/test/resources.

Now when you run envers tests you should see the failure. 

Thanks for this great component !


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