<class name="ObjectDescription" entity-name="ObjectDescription" node="object">

      <id name="m_idx" column="objectdescidx" node="@idx">
         <generator class="uuid" />
      </id>

      <property name="m_name" unique="true" node="@name" column="name"/>

      <set name="m_attributes" inverse="true" lazy="false" cascade="all" embed-xml="true" node=".">
         <key column="objectdescidx"/>
         <one-to-many class="AttributeDescription" entity-name="AttributeDescription" node="attribute" embed-xml="true"/>
      </set>

   </class>

   <class name="AttributeDescription" entity-name="AttributeDescription" node="attribute">

      <id name="m_idx" column="attributedescidx" node="@idx">
         <generator class="uuid" />
      </id>

      <many-to-one name="m_owner" column="objectdescidx" entity-name="ObjectDescription" embed-xml="false" cascade="all"/>

      <property name="m_name" unique="false" column="name" node="@name"/>
      <property name="m_dataType" column="datatype" node="dataType"/>
      <property name="m_dataCategory" column="datacategory" node="dataCategory"/>
      <property name="m_length" column="length" node="length"/>
      <property name="m_accuracy" column="accuracy" node="accuracy"/>
      <property name="m_visibleName" column="visiblename" node="visibleName"/>
      <property name="m_databaseUnit" column="dbunit" node="databaseUnit" />
      <property name="m_uiUnit" column="uiunit" node="uiUnit"/>
      <property name="m_description" column="description" node="description"/>
      <property name="m_minValue" column="minvalue" node="minValue"/>
      <property name="m_maxValue" column="maxvalue" node="maxValue"/>
      <property name="m_mandatory" column="mandatory" node="mandatory"/>
      <property name="m_validatorClass" column="validatorclass"/>
      <property name="m_lookupClass" column="lookupclass"/>
      <property name="m_editorClass" column="editorclass"/>

   </class>

      Session session = getSession().getSession(EntityMode.DOM4J);
      Document out = DocumentHelper.createDocument();
      List results = session.createCriteria("ObjectDescription").setFetchMode("m_attributes",
         FetchMode.JOIN).add(Restrictions.idEq(objectdescription.getIdx())).list();
      for (int i = 0; i < results.size(); i++)
      {
         // add the customer data to the XML document
         Element customer = (Element) results.get(i);
         out.add(customer);
      }

      System.out.println(out.asXML());

16:36:47,312 ERROR [LogInterceptor] TransactionRolledbackException in method: public abstract void de.xxxx.YYYY.exportSchema(java.lang.String) throws java.rmi.RemoteException,java.lang.Exception, causedBy:
org.hibernate.HibernateException: Class not found: double
        at org.hibernate.type.ClassType.get(ClassType.java:28)
        at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:77)
        at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:68)
        at org.hibernate.type.AbstractType.hydrate(AbstractType.java:80)
        at org.hibernate.persister.entity.BasicEntityPersister.hydrate(BasicEnti
tyPersister.java:1680)
        at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:958)
        at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:909)
        at org.hibernate.loader.Loader.getRow(Loader.java:822)
        at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:297)
        at org.hibernate.loader.Loader.doQuery(Loader.java:395)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Lo
ader.java:210)
        at org.hibernate.loader.Loader.doList(Loader.java:1561)
        at org.hibernate.loader.Loader.list(Loader.java:1544)
        at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java
:111)
        at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1306)
        at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:299)
        at de.xxxx.YYYY.exportSchema(...)
        at sun.reflect.GeneratedMethodAccessor218.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.invocation.Invocation.performCall(Invocation.java:345)
        at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(S
tatelessSessionContainer.java:214)
        at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invo
ke(CachedConnectionInterceptor.java:185)
        at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(Stat
elessSessionInstanceInterceptor.java:130)
        at org.jboss.webservice.server.ServiceEndpointInterceptor.invoke(Service
EndpointInterceptor.java:51)
        at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidation
Interceptor.java:48)
        at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInte
rceptor.java:105)
        at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxIntercep
torCMT.java:335)
        at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:1
66)
        at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.
java:139)
        at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192)
        at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFacto
ryFinderInterceptor.java:122)
        at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:6
24)
        at org.jboss.ejb.Container.invoke(Container.java:873)
        at sun.reflect.GeneratedMethodAccessor211.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatch
er.java:141)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
        at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.
java:249)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
        at org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke
(JRMPInvoker.java:805)
        at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:
406)
        at sun.reflect.GeneratedMethodAccessor74.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
        at sun.rmi.transport.Transport$1.run(Transport.java:153)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
60)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
.java:701)
        at java.lang.Thread.run(Thread.java:595)

      List results = getSession()
       .createQuery("from ObjectDescription od left join fetch od.m_attributes where od.m_name like :name")
       .setString("name", objectdescription.getName())
       .list();
      for (int i = 0; i < results.size(); i++)
      {
         ObjectDescription od = (ObjectDescription)results.get(i);
         for (AttributeDescription ad : od.getAttributes())
         {
            System.out.println("1:"+od.getName()+"."+ad.getName());
         }
         List atts = getSession()
          .createQuery("from AttributeDescription a where a.m_owner like :idx")
          .setString("idx", od.getIdx())
          .list();
         for (int j = 0; j < atts.size(); j++)
         {
            AttributeDescription ad = (AttributeDescription)atts.get(j);
            System.out.println("2:"+od.getName()+"."+ad.getName());
         }
      }