No inheritance - there must be only one override set when mis-configured prefetches.

Wed, 01 Jul 2009 23:28:56 -0700 

Hi
Just to let everyone know, if you are using prefetches and by mistake use two routes to the same objects this exception will come up. Example to illustrate: 
SelectQuery on Company
added prefetches
Company.EMPLOYEE+"."+Employee.PERSON
Company.CONTRACTOR+"."+Employee.PERSON
will produce a runtime error.
The error message is a little confusing, is it easy to make it more informative? 
Marcin
[java] WARNING: org.apache.cayenne.CayenneRuntimeException: [v.3.0- SNAPSHOT ${project.build.date} ${project.build.time}] Exception processing message org.apache.cayenne.remote.QueryMessage of type Query [java] org.apache.cayenne.CayenneRuntimeException: [v.3.0- SNAPSHOT ${project.build.date} ${project.build.time}] Exception processing message org.apache.cayenne.remote.QueryMessage of type Query [java] at org .apache .cayenne .remote .service.BaseRemoteService.processMessage(BaseRemoteService.java:167) [java] at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source) [java] at sun .reflect .DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25) 
     [java]     at java.lang.reflect.Method.invoke(Method.java:585)
[java] at com.caucho.hessian.server.HessianSkeleton.invoke(HessianSkeleton.java: 180) [java] at com.caucho.hessian.server.HessianSkeleton.invoke(HessianSkeleton.java: 109) [java] at com.caucho.hessian.server.HessianServlet.service(HessianServlet.java: 396) [java] at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502) [java] at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1124) [java] at ish.oncourse.server.SecurityFilter.doFilter(SecurityFilter.java:110) [java] at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1115) [java] at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361) [java] at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 216) [java] at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) [java] at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) [java] at org .mortbay .jetty .handler.ContextHandlerCollection.handle(ContextHandlerCollection.java: 230) [java] at org .mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java: 114) [java] 02 Jul 2009 15:40:33,670 [2467...@qtp0-5 ] INFO org.apache.cayenne.access.QueryLogger :453 - *** error. [java] java.lang.IllegalArgumentException: No inheritance - there must be only one override set [java] at org .apache .cayenne .access.jdbc.DataRowPostProcessor.<init>(DataRowPostProcessor.java:118) [java] at org .apache .cayenne .access .jdbc .DataRowPostProcessor.createPostProcessor(DataRowPostProcessor.java:105) [java] at org .apache .cayenne.access.jdbc.SelectAction.performAction(SelectAction.java:84) [java] at org .apache .cayenne.access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java: 87) [java] at org.apache.cayenne.access.DataNode.performQueries(DataNode.java:274) [java] at org .apache .cayenne .access.DataDomainQueryAction.runQuery(DataDomainQueryAction.java:422) [java] at org.apache.cayenne.access.DataDomainQueryAction.access $000(DataDomainQueryAction.java:66) [java] at org.apache.cayenne.access.DataDomainQueryAction $2.transform(DataDomainQueryAction.java:395) [java] at org.apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java: 846) [java] at org .apache .cayenne .access .DataDomainQueryAction .runQueryInTransaction(DataDomainQueryAction.java:392) [java] at org .apache .cayenne .access.DataDomainQueryAction.execute(DataDomainQueryAction.java:118) [java] at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:739) [java] at org .apache .cayenne .util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java: 333) [java] at org .apache .cayenne .util.ObjectContextQueryAction.execute(ObjectContextQueryAction.java:96) [java] at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1268) [java] at org .apache .cayenne .access .ClientServerChannelQueryAction .runQuery(ClientServerChannelQueryAction.java:119) [java] at org .apache .cayenne .access .ClientServerChannelQueryAction .execute(ClientServerChannelQueryAction.java:65) [java] at org .apache .cayenne.access.ClientServerChannel.onQuery(ClientServerChannel.java:81) [java] at org .apache .cayenne.remote.service.DispatchHelper.dispatch(DispatchHelper.java:39) [java] at org .apache .cayenne .remote .service.BaseRemoteService.processMessage(BaseRemoteService.java:152) [java] at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source) [java] at sun .reflect .DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25) 
     [java]     at java.lang.reflect.Method.invoke(Method.java:585)
[java] at com.caucho.hessian.server.HessianSkeleton.invoke(HessianSkeleton.java: 180) [java] at com.caucho.hessian.server.HessianSkeleton.invoke(HessianSkeleton.java: 109) [java] at com.caucho.hessian.server.HessianServlet.service(HessianServlet.java: 396) [java] at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
     [java]     at org.mortbay.jetty.Server.handle(Server.java:324)
[java] at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534) [java] at org.mortbay.jetty.HttpConnection $RequestHandler.content(HttpConnection.java:879) [java] at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:828) [java] at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207) [java] at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403) [java] at org.mortbay.jetty.bio.SocketConnector $Connection.run(SocketConnector.java:228) [java] at org.mortbay.thread.QueuedThreadPool $PoolThread.run(QueuedThreadPool.java:522)

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