2:22 p.m.
Named query does not support entity attribute with generic type
---------------------------------------------------------------
Key: EJB-372
URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-372
Project: Hibernate Entity Manager
Issue Type: Bug
Components: EntityManager
Affects Versions: 3.3.2.GA
Environment: hibernate-3.3.0.CR1, hibernate-annotations-3.4.0.CR1
Reporter: louie
Attachments: test-case.zip
We are using the generic to define a template for our entity.
For example, we have the following abstract template class:
@MappedSuperclass
public abstract class AbstractIdentifier<T> {
@Id
@SequenceGenerator(name = "AbstractIdentifier", sequenceName =
"identifier_id")
@GeneratedValue(generator="AbstractIdentifier")
private int id;
@ManyToOne(optional=false)
private T entity;
....
}
We have the following concrete class:
@Entity
@AssociationOverride(name="entity",
joinColumns=@JoinColumn(name="myEntity"))
public class Identifier extends AbstractIdentifier<MyEntity> {
public MyEntity getMyEntity () {
return super.getEntity();
}
public void setMyEntity (final MyEntity myEntity) {
super.setEntity(myEntity);
}
}
If we defined a named query, such as:
@NamedQueries( {
@NamedQuery(name = "myquery", query = "select idf.myEntity from
Identifier idf where idf.identifier = :identifier")})
Then, at runtime, we got the following error message:
run:
[java] Executing 'C:\Program Files\Java\jdk1.6.0_05\jre\bin\java.exe' with
arguments:
[java] '-classpath'
[java]
'C:\workspaces\test-case\test-case\lib\antlr-2.7.6.jar;C:\workspaces\test-case\test-case
\lib\cglib.jar;C:\workspaces\test-case\test-case\lib\commons-collections-3.1.jar;C:\workspaces\test-
case\test-case\lib\commons-logging-1.1.1.jar;C:\workspaces\test-case\test-case\lib\dom4j-1.6.1.jar;C
:\workspaces\test-case\test-case\lib\ejb3-persistence.jar;C:\workspaces\test-case\test-case\lib\free
marker.jar;C:\workspaces\test-case\test-case\lib\hibernate-annotations.jar;C:\workspaces\test-case\t
est-case\lib\hibernate-commons-annotations.jar;C:\workspaces\test-case\test-case\lib\hibernate-entit
ymanager.jar;C:\workspaces\test-case\test-case\lib\hibernate-tools.jar;C:\workspaces\test-case\test-
case\lib\hibernate3.jar;C:\workspaces\test-case\test-case\lib\hsqldb.jar;C:\workspaces\test-case\tes
t-case\lib\javassist-3.6.0.GA.jar;C:\workspaces\test-case\test-case\lib\jboss-archive-browsing.jar;C
:\workspaces\test-case\test-case\lib\jta.jar;C:\workspaces\test-case\test-case\lib\log4j-1.2.15.jar;
C:\workspaces\test-case\test-case\lib\ojdbc14.jar;C:\workspaces\test-case\test-case\lib\persistence-
api-1.0.jar;C:\workspaces\test-case\test-case\lib\persistence-api.jar;C:\workspaces\test-case\test-c
ase\lib\slf4j-api-1.4.2.jar;C:\workspaces\test-case\test-case\lib\slf4j-log4j12-1.5.2.jar;C:\workspa
ces\test-case\test-case\bin'
[java] 'Tester'
[java]
[java] The ' characters around the executable and arguments are
[java] not part of the command.
[java] log4j:WARN No appenders could be found for logger
(org.hibernate.cfg.annotations.Version
).
[java] log4j:WARN Please initialize the log4j system properly.
[java] Exception in thread "main" javax.persistence.PersistenceException:
org.hibernate.Hiberna
teException: Errors in named queries: myquery
[java] at
org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.j
ava:737)
[java] at
org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersis
tence.java:121)
[java] at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:52)
[java] at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
[java] at Tester.main(Unknown Source)
[java] Caused by: org.hibernate.HibernateException: Errors in named queries: myquery
[java] at
org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:374)
[java] at
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1304)
[java] at
org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfigura
tion.java:859)
[java] at
org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.j
ava:730)
[java] ... 4 more
[java] Java Result: 1
It looks like that hibernate can not parsing the generic type MyEntity correct.
Please help. Thanks.
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