3 Replies Latest reply on Aug 30, 2007 6:59 PM by Tomas Cerny

    Seam 2.0B1: selectItems, convertEntity, and lazy fetching

    Hung Tang Apprentice

      Not entirely sure if this is Seam 2.0B1 related, but I'm encountering some problems after upgrading where I'm getting an "org.hibernate.MappingException: Unknown entity:" message every time I try to update a form that uses a s:selectItems. I'm encountering this problem in two scenarios: (1) @OneToOne with lazy fetching enabled. (2) @ManyToOne--regardless if lazy fetching is turned on or not.

      I noticed that EntityConverterStore is picking up the first option in the selection list as the proxied-version of the entity, whose value expression is specified on the selectOneMenu component. This is why it's causing the problem. But why is it doing that? I suspect that when loading the entire list to fill the dropdown, the EM is loading a previously cached proxied of the entity.

      Any ideas how to fix this problem?

      ## components.xml

       <fwk:entity-query name="regions" ejbql="select r from Region r"/>
      


      ## Location.java
      @Entity
      public class Location {
      
       @OneToOne(fetch = FetchType.LAZY)
       @JoinColumn(name = "regionid", nullable = false)
       private Region region;
      
      


      ## location.xhtml
      
       <h:selectOneMenu required="true"
       value="#{location.region}">
       <s:selectItems value="#{regions.resultList}"
       var="region"
       label="#{region.regionName}"
       noSelectionLabel="Please select"
       hideNoSelectionLabel="true"/>
       <s:convertEntity/>
       </h:selectOneMenu>
      


      Stack trace

      14:36:37,506 [http-127.0.0.1-8080-2] ERROR DebugPageHandler:23 - redirecting to debug page
      org.hibernate.MappingException: Unknown entity: a.b.c.Region_$$_javassist_54
       at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
       at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:68)
       at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
       at org.hibernate.impl.SessionImpl.get(SessionImpl.java:815)
       at org.hibernate.impl.SessionImpl.get(SessionImpl.java:808)
       at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:174)
       at org.jboss.seam.persistence.EntityManagerProxy.find(EntityManagerProxy.java:85)
       at org.jboss.seam.framework.EntityIdentifier.find(EntityIdentifier.java:32)
       at org.jboss.seam.ui.converter.EntityConverterStore.get(EntityConverterStore.java:48)
       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:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
       at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
       at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
       at org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:38)
       at org.jboss.seam.util.Work.workInTransaction(Work.java:39)
       at org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:32)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
       at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
       at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
       at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151)
       at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87)
       at org.jboss.seam.ui.converter.EntityConverterStore_$$_javassist_59.get(EntityConverterStore_$$_javassist_59.java)
       at org.jboss.seam.ui.converter.EntityConverter.getAsObject(EntityConverter.java:88)
       at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:152)
       at com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:197)
       at com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:359)
       at javax.faces.component.UIInput.getConvertedValue(UIInput.java:934)
       at javax.faces.component.UIInput.validate(UIInput.java:860)
       at javax.faces.component.UIInput.executeValidate(UIInput.java:1065)
       at javax.faces.component.UIInput.processValidators(UIInput.java:666)
       at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
       at javax.faces.component.UIForm.processValidators(UIForm.java:229)
       at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
       at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:662)
       at org.ajax4jsf.framework.ajax.AjaxViewRoot.access$201(AjaxViewRoot.java:53)
       at org.ajax4jsf.framework.ajax.AjaxViewRoot$3.invokeRoot(AjaxViewRoot.java:315)
       at org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:53)
       at org.ajax4jsf.framework.ajax.AjaxContext.invokeOnRegionOrRoot(AjaxContext.java:191)
       at org.ajax4jsf.framework.ajax.AjaxViewRoot.processValidators(AjaxViewRoot.java:329)
       at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
       at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:87)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:63)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:46)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:73)
       at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
       at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:40)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:63)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:140)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
       at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)