hi all
when i try to query using the gae.parent-pk IN a list, it is failing
with a ClassCastException below. i can use the parent key in a query
for a single value fine.
any ideas why this doesnt work?
java.lang.ClassCastException: java.util.ArrayList cannot be cast to
com.google.appengine.api.datastore.Key
at
org.datanucleus.store.appengine.query.DatastoreQuery.internalPkToKey(DatastoreQuery.java:
14
this is the query
---------------------------
Query chatUserQuery = em.createQuery("Select c from ChatUser c where
c.parentKey=:parentKey");
chatUserQuery.setParameter("parentKey", keyList);
chatUserList = (List<ChatUser>) chatUserQuery.getResultList();
this is the JPA
----------------------
public class ChatUser {
public static final String CLASS_NAME = "ChatUser";
public static final String FIND_BY_PARENT_KEY =
"ChatUser.findByParentKey";
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Key key;
@Basic
@Extension(vendorName="datanucleus", key="gae.parent-pk", value =
"true")
private Key parentKey;
}
-lp
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