save the transient instance before flushing

[odupont]

I receive an error when I use this querry in a Statefull Entity (selectApplication):

return em.createQuery("select a from Application a " +
"where lower(a.name) like :name " +
"and lower(a.description) LIKE :description " +
"and a.category = :category order by a.name")
.setParameter("name", name)
.setParameter("description", description)
.setParameter("category", category);

I have 2 entities: Application and Category.
This example comes from DVDStore and the name, description and Category comes from a JSF page:
<h:selectOneMenu value="#{selectApplication.category}">
<s:convertEntity />
<ui:remove> <f:selectItem itemLabel="Any" itemValue="#{anyCategory}" /></ui:remove>
<s:selectItems value="#{allCategories.resultList}" var="category" label="#{category.name}" noSelectionLabel="ANY" />
</h:selectOneMenu>

I receive this error:
javax.servlet.ServletException: Error calling action method of component with id _id39:_id54
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
...
Caused by: javax.faces.el.EvaluationException: /selectApplication.xhtml @48,51 action="#{selectApplication.doSearch}": javax.ejb.EJBTransactionRolledbackException: java.lang.IllegalStateException: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.mycompany.seam.refdata.model.Category
at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)

[christian.bauer]

Well, looks like the persistence context is flushed before you execute that query, because the query touches entities that have been modified. Either enable cascading persist on the association from Category to Application (I'm guessing here that this is the association in question), or call persist() on the Category instance before flushing/querying, or disable automatic flushing with FlushModeType.MANUAL by using a Seam-managed persistence context.

[squ1rr3l]

I'm getting a similar error, and as a SEAM newbie, I can't figure out how to fix it.

I used seam-gen to create a new project, then used new-entity. The resulting components allow me to create and edit, but the "delete" button produces the TransientObjectException:

16:08:25,384 ERROR [ExceptionFilter] exception root cause
javax.faces.FacesException: #{commentHome.remove}: org.hibernate.TransientObjectException:
 object references an unsaved transient instance - save the transient instance before flus
hing: gov.virginia.vec.IT.prov.Comment
 at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.j
ava:107)
 at javax.faces.component.UICommand.broadcast(UICommand.java:383)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180)
 at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:158)

 at org.ajax4jsf.framework.ajax.AjaxViewRoot.processApplication(AjaxViewRoot.java:3
46)
 at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.j
ava:97)
 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(ApplicationFil
terChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain
.java:206)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:82)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.j
ava:127)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
 at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
 at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
 at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:149)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil
terChain.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(ApplicationFil
terChain.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(SecurityAssociati
onValve.java:179)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.ja
va: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(CachedConnectionV
alve.java:157)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10
9)
 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$Http11ConnectionHandler.process(Http11P
rotocol.java:580)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: org.hibernate.TransientObjectException: obj
ect references an unsaved transient instance - save the transient instance before flushing
: gov.virginia.vec.IT.prov.Comment
 at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBinding
MethodExpressionAdapter.java:91)
 at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.j
ava:91)
 ... 45 more

[squ1rr3l]

Ok, is this a problem in the CVS version of org.jboss.seam.framework.EntityHome, or is it just me?

In the seam-gen created [entity]Home.java class, if I do this:

 log.info("Entity name: " + super.getEntityName());
 log.info("persist result: " + super.persist());
 log.info("remove result: " + super.remove());

I get the correct entity name, "persisted" is returned from the persist method, but then the above-reference exception when it gets to the remove().

I don't see any Hibernate commands on the log when calling persist, so maybe that is not working? The "Hibernate: delete ... " is written right before the exception.

[christian.bauer]

This was caused by getEntityName() in EntityHome and has been fixed in CVS.