Exception is thrown when removing entity with null/invalid CMR value

Let's look at the following example.

T_Parent
==============
(pk)
--------------
1
2

T_Child
==============
(pk) (fk)
--------------
1 1
2 1
3 null
4 3

Let say, table T_Child and T_Parent have a 1-M relationship.
This relationship is modelled using CMR such that, no fk constraint and cascade
delete is required. It is fine when removing the record 1 and 2 from T_Child but
when removing records 3 and 4, exception is thrown.

Here is the stack trace
--------------------------
16:00:37,108 ERROR [LogInterceptor] TransactionRolledbackLocalException in method: null, causedBy:
javax.ejb.NoSuchObjectLocalException: Entity not found: primaryKey=[.0.]
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:182)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:342)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:149)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:128)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.EntityContainer.internalInvoke(EntityContainer.java:514)
at org.jboss.ejb.Container.invoke(Container.java:854)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.invokeRemoveRelation(JDBCCMRFieldBridge.java:1211)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.destroyRelationLinks(JDBCCMRFieldBridge.java:1026)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.destroyRelationLinks(JDBCCMRFieldBridge.java:1012)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.destroyRelationLinks(JDBCCMRFieldBridge.java:996)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.setInstanceValue(JDBCCMRFieldBridge.java:890)
at org.jboss.ejb.plugins.cmp.jdbc.CascadeDeleteStrategy$NoneCascadeDeleteStrategy.removedIds(CascadeDeleteStrategy.java:52)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.removeFromRelations(JDBCCMRFieldBridge.java:393)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCEntityBridge.removeFromRelations(JDBCEntityBridge.java:308)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCRemoveEntityCommand.execute(JDBCRemoveEntityCommand.java:91)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.removeEntity(JDBCStoreManager.java:682)
at org.jboss.ejb.plugins.CMPPersistenceManager.removeEntity(CMPPersistenceManager.java:506)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.removeEntity(CachedConnectionInterceptor.java:454)
at org.jboss.ejb.EntityContainer.remove(EntityContainer.java:530)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.invocation.Invocation.performCall(Invocation.java:345)
at org.jboss.ejb.EntityContainer$ContainerInterceptor.invoke(EntityContainer.java:1159)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCRelationInterceptor.invoke(JDBCRelationInterceptor.java:72)
at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke(EntitySynchronizationInterceptor.java:273)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
at org.jboss.ejb.plugins.EntityReentranceInterceptor.invoke(EntityReentranceInterceptor.java:111)
at org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(EntityInstanceInterceptor.java:211)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockInterceptor.java:89)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:53)
at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:48)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:105)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:316)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:149)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:128)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.EntityContainer.internalInvoke(EntityContainer.java:514)
at org.jboss.ejb.Container.invoke(Container.java:854)
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:413)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:44)
at $Proxy703.remove(Unknown Source)
at eo.session.admin.AdminSessionBean.deleteOffice(AdminSessionBean.java:2433)
at eo.web.action.admin.DeleteOfficeAction.execute(DeleteOfficeAction.java:55)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at eo.web.EoEdgeUserAccessTrackerFilter.doFilter(EoEdgeUserAccessTrackerFilter.java:84)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at eo.web.EoEdgeSessionFilter.doFilter(EoEdgeSessionFilter.java:58)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at eo.web.EoEdgeSecurityFilter.doFilter(EoEdgeSecurityFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at eo.web.EoEdgeLogFilter.doFilter(EoEdgeLogFilter.java:84)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:44)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:169)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)