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Hibernate version: 3.1.3

Mapping documents:

<hibernate-mapping>
<class name="ClassA" lazy="false">
<list name="attributes" lazy="true" cascade="all-delete-orphan" inverse="false">
<key column="object_id" not-null="true"/>
<index column="order_seq"/>
<one-to-many class="ve.com.tcs.process.to.AttributeTo"/>
</list>
</class>
</hibernate-mapping>

<hibernate-mapping>
<class name="ClassB" lazy="false">
<list name="attributes" lazy="true" cascade="all-delete-orphan" inverse="false">
<key column="object_id" not-null="true"/>
<index column="order_seq"/>
<one-to-many class="ve.com.tcs.process.to.AttributeTo"/>
</list>
</class>
</hibernate-mapping>

Full stack trace of any exception that occurs:

org.hibernate.MappingException: duplicate property mapping: _attributesBackref

at org.hibernate.mapping.PersistentClass.checkPropertyDuplication(PersistentClass.java:414)

at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:404)

at org.hibernate.mapping.RootClass.validate(RootClass.java:192)

at org.hibernate.cfg.Configuration.validate(Configuration.java:984)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1169)

at ve.com.tcs.process.bf.ProcessBf.<init>(ProcessBf.java:139)

at ve.com.tcs.process.bf.ProcessBf.<clinit>(ProcessBf.java:119)

at _organizationUnit._jspService(organizationUnit.jsp:5)

at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)

at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:350)

at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)

at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)

at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)

at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:663)

at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330)

at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830)

at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:285)

at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:126)

at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)

at java.lang.Thread.run(Thread.java:534)


Name and version of the database you are using:Oracle10g release 2

I have an ATTRIBUTES table where I store additional attributes for other tables. I'm trying to map the relationship in two classes and I get Duplicate Backref

Repost

repost

I think that the problem is that your child class (AttributeTo) is a member of two different lists.

Hence it could have a different index for each of the lists.
Therefore you need seperate index columns for each of the lists:


<index column="order_seq_a"/>

....


<index column="order_seq_b"/>


Note: There may be other issues with the configuration I would strongly suggest that you don't reference the same child from two different lists.