Explanation at bottom...

Hibernate version:

3.0.5

Mapping documents:

<class mutable="false" name="Lot" table="frlot">
<id name="id" column="lot_id" />
<property name="type" column="lot_type" />
<property name="subType" column="sub_lot_type" />
<property name="status" column="lot_process_state" />
<property name="state" column="lot_state" />
<property name="productionState" column="lot_prodctn_state" />
<property name="holdState" column="lot_hold_state" />
<property name="finishedState" column="lot_finished_state" />
<property name="inventoryState" column="lot_inv_state" />
<property name="priority" column="priority_class" />
<property name="externalPriority" column="priority" />
<property name="totalWaferQuantity" column="qty" />
<property name="productWaferQuantity" column="prod_qty" />
<property name="controlWaferQuantity" column="cntl_qty" />
<property name="processLagTime" column="process_lag_time" />
<property name="lastClaimTime" column="claim_time" type="com.amd.fabview.siview.hibernate.TimestampType" />
<property name="bankId" column="bank_id" />
<property name="parentLotId" column="split_lot_id" />
<property name="vendorLotId" column="vendor_lot_id" />
<property name="lastClaimUser" column="claim_user_id" />
<property name="createdTime" column="created_time" type="com.amd.fabview.siview.hibernate.TimestampType" />
<property name="activatedTime" column="activated_time" type="com.amd.fabview.siview.hibernate.TimestampType" />
<property name="releasedTime" column="released_time" type="com.amd.fabview.siview.hibernate.TimestampType" />
<property name="queuedTime" column="queued_time" type="com.amd.fabview.siview.hibernate.TimestampType" />
<set name="notesOrComments">
<key column="Lot_ID"/>
<one-to-many class="LotNoteOrComment"/>
</set>
</class>


Code between sessionFactory.openSession() and session.close():

Is not reached in this case.

Full stack trace of any exception that occurs:

Association references unmapped class: com.amd.fabview.siview.hibernate.LotNoteOrComment
at com.amd.fabview.siview.hibernate.HibernateFactory.getInstance(HibernateFactory.java:151)
at com.amd.fabview.siview.hibernate.HibernateFactory.getInstance(HibernateFactory.java:128)
at com.amd.fabview.siview.hibernate.HibernateFactory.getInstance(HibernateFactory.java:101)
at com.amd.fabview.siview.lot.LotOperationTransaction.getLotOperationSummaryCriteria(LotOperationTransaction.java:301)
at com.amd.fabview.siview.lot.LotOperationBuilder.getLotOperationEvents(LotOperationBuilder.java:405)
at com.amd.fabview.siview.lot.LotOperationBuilder.buildSummaryDataset(LotOperationBuilder.java:319)
at com.amd.fabview.siview.lot.LotOperationBuilder.generateHTMLOperationSummaryList(LotOperationBuilder.java:200)
at com.amd.fabview.siview.lot.LotHistoryFacade.generateHTMLOperationSummaryList(LotHistoryFacade.java:139)
at org.apache.jsp.jsp.com.amd.fabview.siview.lot.LotHistorySummary_jsp._jspService(org.apache.jsp.jsp.com.amd.fabview.siview.lot.LotHistorySummary_jsp:965)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:673)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:464)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:691)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:658)
at org.apache.jsp.jsp.com.amd.fabview.siview.CheckLot_jsp._jspService(org.apache.jsp.jsp.com.amd.fabview.siview.CheckLot_jsp:173)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:738)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)

Name and version of the database you are using:

Oracle 8i

The generated SQL (show_sql=true):

Not applicable in this case.

Debug level Hibernate log excerpt:

- processing extends queue
- processing collection mappings
- Mapping collection: com.amd.fabview.siview.hibernate.Equipment.chambers -> frprcrsc
- Servlet.service() for servlet jsp threw exception
com.amd.fabview.FabviewException: Association references unmapped class: com.amd.fabview.siview.hibernate.LotNoteOrComment
... (as above)

Explanation:

Basically, we have two classes - LotNote and LotComment. Both implement the interface LotNoteOrComment. We're trying to may a SortedSet from the Lot class to this LotNoteOrComment interface. I can quite successfully create a Session query against the interface, so I know that the two classes are mapped correctly and that they are both implementing the interface as designed. How can I teach Hibernate about this method without adding the Interface to the mapping file? Or is there a way to do so without losing the ability to cast to a more specific class?

These two classes are almost identical in structure, but are loaded from two different tables. Most code wants to see a sorted set interleaving both of them, and just uses the common methods, hence the interface.

Any assistance will be much appreciated.

-Richard Stanford

I think you can have a abstract class LotNoteOrComment and both LotNote and LotComment extend from this class.

Then you can have a mapping like:

<class name = LotNoteOrComment ... discriminator = -1>

<discriminator column="Lot_Type_Code" />
.....
<set name="notesOrComments">
<key column="Lot_ID"/>
<one-to-many class="LotNoteOrComment"/>
</set>

<!-- Mapping for subclasses -->
<subclass name="LotNote" discriminator-value="1">

</subclass>

<subclass name="LotComment" discriminator-value="2">

</subclass>
</class>

I haven't tried this out, but i think this should work for you.

Thanks, but I'm not sure that will work for us. I should have been a little more specific - something I forgot to say explicitly was that these two classes, while they share a common implementation, are each mapped to a completely different table on the database.