I'm having a problem writing a query to get a list of objects by
filtering for a another entities key.
Object A has many object Bs.
Object A
@PersistenceCapable(identityType=IdentityType.APPLICATION, detachable
= "true")
public class A {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent(mappedBy = "A")
private List<Key> Bs;
Object B
@PersistenceCapable(identityType=IdentityType.APPLICATION, detachable
= "true")
public class B {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent
private Key A;
I know the id key for object A and I want to query object B and return
all Bs that have object A.
I have tried...
1) List<Key> B = A.getBs();
but this has returned me null
2) String query = "select from " + B.class.getName() + " WHERE A == "
+ A.getKey().getId() + " order by creationDate asc";
but this returns no results
I know i have valid data in the datastore since i am viewing A's data
and i know that A's key is 5, yet no matter how i query for it.. i get
no results.
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