Persistence unit not finding managed entity - spring

Question

#PersistenceContext entity manager cannot find an/any entity class which it appeared to have processed during container launch.
During persistence unit setup, it appears that the container finds and registers the entity:
2012-05-17 15:28:21,978 INFO [org.hibernate.cfg.annotations.Version] (main) Hibernate Annotations 3.4.0.GA
2012-05-17 15:28:21,997 INFO [org.hibernate.annotations.common.Version] (main) Hibernate Commons Annotations 3.1.0.GA
2012-05-17 15:28:22,004 INFO [org.hibernate.ejb.Version] (main) Hibernate EntityManager 3.4.0.GA
2012-05-17 15:28:22,039 INFO [org.hibernate.ejb.Ejb3Configuration] (main) Processing
PersistenceUnitInfo [
name: dashboardPu
...]
2012-05-17 15:28:22,069 WARN [org.hibernate.ejb.Ejb3Configuration] (main) Persistence provider caller does not implement the EJB3 spec correctly. PersistenceUnitInfo.getNewTempClassLoader() is null.
2012-05-17 15:28:22,146 INFO [org.hibernate.cfg.AnnotationBinder] (main) Binding entity from annotated class: scholastic.dashboard.dto.ReportRequest
2012-05-17 15:28:22,161 INFO [org.hibernate.cfg.annotations.QueryBinder] (main) Binding Named query: ReportRequest.getReportsByUser => from ReportRequest where userId = :userId
However, the later attempt to use that entity fails. I've verified that the entitymanager is indeed using dashboardPu (there are 3 persistence units in this ear) by dropping into the debugger and looking through the entitymanager>factory>persistenceUnit.
2012-05-17 15:28:54,730 DEBUG [org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter] (http-127.0.0.1-8080-2) Opening JPA EntityManager in OpenEntityManagerInViewFilter
2012-05-17 15:28:54,731 DEBUG [org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter] (http-127.0.0.1-8080-1) Using EntityManagerFactory 'dashboardEntityManagerFactory' for OpenEntityManagerInViewFilter
2012-05-17 15:28:54,731 DEBUG [org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter] (http-127.0.0.1-8080-1) Opening JPA EntityManager in OpenEntityManagerInViewFilter
2012-05-17 15:28:54,775 DEBUG [scholastic.dashboard.dao.ReportRequestDao] (http-127.0.0.1-8080-2) Get reports for secretuserid
2012-05-17 15:28:54,797 WARN [org.hibernate.hql.QuerySplitter] (http-127.0.0.1-8080-2) no persistent classes found for query class: from scholastic.dashboard.dto.ReportRequest where user_id = secretuserid
I got here by first having it fail to find the "ReportRequest.getReportsByUser" query using em.createNamedQuery(), then trying a query w/o using the full path name to the entity class from ReportRequest where userId = :userId, and then the query in the last code block line above.
Using JBoss 5.1, JPA 2, Hibernate 3.3 or 3.6, Spring 3.0.5.
Code snippets:
#Entity
#Table(name="td_report_request")
#NamedQueries({
#NamedQuery(name=ReportRequestDao.GET_REPORTS_BY_USER,
query="from ReportRequest where userId = :userId"),
})
public class ReportRequest extends SlmsGuidAbstract {...}
...
#Repository
public class ReportRequestDao {
#PersistenceContext
private EntityManager em;
public List<ReportRequest> getReportRequests(String userId) {
// TODO uncomment this line and remove the one after when we go to JBoss >= 6
// TypedQuery<ReportRequest> query = em.createNamedQuery(GET_REPORTS_BY_USER, ReportRequest.class);
// Query query = em.createNamedQuery(GET_REPORTS_BY_USER);
Query query = em.createQuery("from scholastic.dashboard.dto.ReportRequest where user_id = " + userId);
...
<bean id="dashboardEntityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="lycea.ds.jndi-MySqlDS" />
<property name="persistenceUnitName" value="dashboardPu"/>
</bean>
...
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="dashboardPu" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:/MySqlDS</jta-data-source>
<properties>
<property name="jboss.entity.manager.factory.jndi.name" value="java:/dashboardPu"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.query.factory_class" value="org.hibernate.hql.ast.ASTQueryTranslatorFactory"/>
<property name="hibernate.connection.release_mode" value="auto"/>
<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup" />
<property name="hibernate.hbm2ddl.auto" value="update"/>
</properties>
</persistence-unit>
</persistence>

Answer 1

Try adding annotated jpa class in persistance.xml inside tag <class/>