You seem to be hitting
http://java.net/jira/browse/GLASSFISH-16164.
Try using <property name="eclipselink.weaving.fetchgroups"
value="false"/> as a possible workaround.
On 5/18/2011 8:12 AM, forums_at_java.net wrote:
> Hi,
>
> I'm having the same problem here. This is my setup:
> The SessionBean:
> @Stateless
> @TransactionAttribute(TransactionAttributeType.REQUIRED)
> publicclass CalculateBean implements CalculateBeanRemote {
>
> @PersistenceContext(unitName = "CalculationJPA")
> private EntityManager em;
>
> @Override
> public Result getResult(Integer id) {
> Result result= em.find(Result.class, id);
> //Checked here: result has an resultId and a resultName,
> they are not null
> return result;
> }
> }
> The RemoteInterface:
> @Remote
> public interface CalculateBeanRemote {
> public Result getResult(Integer id);
> }
> The Entity:
> @Entity
> @Table(name = "Result")
> public class Result implements Serializable{
>
> @Id
> private Integer resultId;
>
> @Column(nullable = false, length = 800)
> private String resultName;
>
> public Result() {
> }
> public Result(Integer id, String name) {
> super();
> this.resultId= id;
> this.resultName= name;
> }
> //getters and setters
> }
> In my Servlet:
> Context context = getInitialContext();
> CalculateBeanRemote calculator = (CalculateBeanRemote)
>
> context.lookup("java:global/TestEjbEnterpriseApplication/TestEjbEnterpriseApplication-ejb/CalculateBean!com.mycompany.jee.ejb.CalculateBeanRemote");
>
> Result result = calculator.getResult(new Integer(9)); //Here I
> receive
> a Result with null resultId and null resultName
>
> My persistence.xml
> <persistence-unit name="CalculationJPA" transaction-type="JTA">
> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
> <class>com.itcan.jee.ejb.model.Insurance</class>
> <properties>
> <property name="javax.persistence.jdbc.url"
> value="jdbc:derby://localhost:1527/sample"/>
> <property name="javax.persistence.jdbc.password" value="app"/>
> <property name="javax.persistence.jdbc.driver"
> value="org.apache.derby.jdbc.ClientDriver"/>
> <property name="javax.persistence.jdbc.user" value="app"/>
> </properties>
> </persistence-unit>
>
> So, the fields in the result are set in CalculateBean, but in my
> servlet I
> receive null-fields.
>
> I have done the same example but without setting my Result class to
> being an
> Entity, and there it works normally.
>
> So the problem seems that the Entity is not returned correctly to the
> client.
>
> Can anybody help?
>
> Thank you in advance!
>
> Regards
>
>
> --
>
> [Message sent by forum member 'MohamzJava']
>
> View Post: http://forums.java.net/node/794504
>
>