Hi Dan, thank you, that helped. I was blind.
best regards Andreas ----- Ursprüngliche Mail ----- Von: "Dan Haywood" <[email protected]> An: "users" <[email protected]> Gesendet: Dienstag, 4. November 2014 09:30:15 Betreff: Re: jdo find object for refernced object strategy Hi, If I understand you correctly, you want to write a query "select from A where b = :someB" ? If so, take a look at these examples from Estatio [1], [2] HTH Dan [1] https://github.com/estatio/estatio/blob/ISIS-537-use-bootstrap/dom/src/main/java/org/estatio/dom/agreement/AgreementRole.java#L74 [2] https://github.com/estatio/estatio/blob/ISIS-537-use-bootstrap/dom/src/main/java/org/estatio/dom/agreement/AgreementRoles.java#L67 On 4 November 2014 08:23, Lechner Andreas <[email protected]> wrote: > Hi, > > maybe it is a stupid question, but was is the best strategie for the > following > sceanrio? > > I have a class A, that contains a reference to class B. > How do i find all classes A wich have the special class B? > > I use following annotations for my classes: > @PersistenceCapable(identityType=IdentityType.DATASTORE) > @DatastoreIdentity(strategy=IdGeneratorStrategy.INCREMENT, column="id") > @Version(strategy=VersionStrategy.VERSION_NUMBER, column="version") > > I was looking in the JDO help, but I am blind maybe. > > best regards > Andreas >
