[jboss-user] [JBoss Seam] - 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)


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