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org.romaframework.aspect.persistence.PersistenceException: getQuery	at org.romaframework.aspect.persistence.datanucleus.jdo.JDOPersistenceHelper.getQuery(JDOPersistenceHelper.java:84)	at org.romaframework.aspect.persistence.datanucleus.jdo.JDOPersistenceHelper.queryByFilter(JDOPersistenceHelper.java:223)	at org.romaframework.aspect.persistence.datanucleus.jdo.JDOPersistenceHelper.queryByExample(JDOPersistenceHelper.java:195)	at org.romaframework.aspect.persistence.datanucleus.jdo.JDOBasePersistenceAspect.query(JDOBasePersistenceAspect.java:309)	at org.romaframework.core.repository.PersistenceAspectRepository.findByCriteria(PersistenceAspectRepository.java:48)	at org.romaframework.frontend.domain.crud.CRUDMain.executeQuery(CRUDMain.java:280)	at org.romaframework.frontend.domain.crud.CRUDMain.executePagingQuery(CRUDMain.java:258)	at org.romaframework.frontend.domain.crud.CRUDMain.searchByExample(CRUDMain.java:199)	at org.romaframework.frontend.domain.crud.CRUDMain.search(CRUDMain.java:185)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.romaframework.core.schema.reflection.SchemaActionReflection.invoke(SchemaActionReflection.java:46)	at org.romaframework.core.flow.Controller.executeAction(Controller.java:66)	at org.romaframework.aspect.view.echo2.form.EntityForm.executeAction(EntityForm.java:377)	at org.romaframework.aspect.view.echo2.form.EntityForm.actionPerformed(EntityForm.java:213)	at nextapp.echo2.app.button.AbstractButton.fireActionPerformed(AbstractButton.java:135)	at nextapp.echo2.app.button.AbstractButton$1.actionPerformed(AbstractButton.java:100)	at nextapp.echo2.app.button.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:70)	at nextapp.echo2.app.button.DefaultButtonModel.doAction(DefaultButtonModel.java:58)	at nextapp.echo2.app.button.AbstractButton.doAction(AbstractButton.java:121)	at nextapp.echo2.app.button.AbstractButton.processInput(AbstractButton.java:506)	at nextapp.echo2.app.update.ClientUpdateManager.process(ClientUpdateManager.java:116)	at nextapp.echo2.app.update.UpdateManager.processClientUpdates(UpdateManager.java:89)	at nextapp.echo2.webcontainer.ContainerSynchronizeService.renderUpdate(ContainerSynchronizeService.java:471)	at nextapp.echo2.webrender.service.SynchronizeService.service(SynchronizeService.java:279)	at nextapp.echo2.webrender.WebRenderServlet.process(WebRenderServlet.java:273)	at org.romaframework.aspect.view.echo2.Echo2StartupServlet.process(Echo2StartupServlet.java:52)	at nextapp.echo2.webrender.WebRenderServlet.doPost(WebRenderServlet.java:189)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)	at org.romaframework.web.RomaWebFilter.doFilter(RomaWebFilter.java:77)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1139)	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:378)	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)	at org.mortbay.jetty.Server.handle(Server.java:324)	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:535)	at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:880)	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747)	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)