Hi,

I am trying to get a heterogeneous list of objects in a list through hibernate and am using the @any mapping.
I have done the following it compiles and executes but it does not return any object
here is the pojo
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import org.hibernate.annotations.Any;
import org.hibernate.annotations.AnyMetaDef;
import org.hibernate.annotations.MetaValue;

@Entity
@Table(name = "entity_instance")
public class EntityInstance implements java.io.Serializable {

private Object attachment;
private Long id;
public EntityInstance() {
}
@Any(metaColumn = @Column(name = "entityType"))
@AnyMetaDef(idType = "long", metaType = "string", metaValues = {
@MetaValue(targetEntity = Comment.class, value = "C"),
@MetaValue(targetEntity = Document.class, value = "D") })
@JoinColumn(name = "instanceId")
public Object getAttachment() {
return attachment;
}

public void setAttachment(Object attachment) {
this. attachment = attachment;
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Long getId() {
return this.id;
}

public void setId(Long id) {
this.id = id;
}
}

and my hbm.xml file is as follows:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 22 Nov, 2009 11:31:40 AM by Hibernate Tools 3.2.4.GA -->
<hibernate-mapping>
<class name="com.ensarm.enwelib.orm.hibernate.domain.EntityInstance" table="entity_instance" >
<id name="id" type="java.lang.Long">
<column name="id" />
<generator class="identity" />
</id>
</class>
</hibernate-mapping>

here is the listing..
the record is as follows on the db
entity_instance
[1957, 1, C]

Session session = null;
try {
session = SchemaManager.getOrmSession();
Query query = session.createQuery("from EntityInstance where id=:value");
query.setLong("value", 1957);
List entitylist = query.list();
SchemaManager.releaseSession(session);
}
catch (Exception e) {
e.printStackTrace();
}


please let me know here I am wrong..

Hi,

The above implementation is right.
problem was actually
I was using the Configuration instead of AnnotationConfiguration to build the factory and hence it was not respecting the annotation
a few changes in the .cfg.xml file the above code works absolutely fine.I was also able to get the heterogeneous list of objects


but now when I am trying to save a new borrow entity with a new any object it does not work.
as shown in the example patch at this like from ur site..
http://opensource.atlassian.com/project ... -patch.txt

+ PropertySet set2 = new PropertySet("integer");
+ property = new IntegerProperty("age", 33);
+ set2.setSomeProperty(property);

+ set2.addGeneratedProperty(property);
+ s.save(set2);

+
+ t.commit();
+ s.close();


where I am also trying the same thing.

Book bk = new Book();
bk.setName("java");
Borrow brw = new Borrow();
brw.setItem(bk);
t.begin();
session.save(brw);


t.commit();

but it throws this exception

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.ensarm.enwelib.orm.hibernate.domain.Book


at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:242)
at org.hibernate.type.AnyType.nullSafeSet(AnyType.java:154)
at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2025)


at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2399)
at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2335)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2635)


at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:115)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263)


at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)


at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:365)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)


at com.ensarm.enwelib.orm.hibernate.AnyTest.testAny(AnyTest.java:56)
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 junit.framework.TestCase.runTest(TestCase.java:168)
at junit.framework.TestCase.runBare(TestCase.java:134)


at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)


at junit.framework.TestSuite.runTest(TestSuite.java:232)
at junit.framework.TestSuite.run(TestSuite.java:227)
at org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:76)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)


at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)


at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

please let me know where I am going wrong...

Komal