Hello:
I have a GAE (and a GWT) app where in I am using JDO for the datastore
integration. I have an entity Customer who can have multiple
addresses.
CUSTOMER Entity:
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Customer {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
Long id;
@Persistent
String customerID;
@Persistent
String customerName;
@Element(dependent = "true")
private List<Address> customerAddress;
...
ADDRESS Entity
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Address {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent
private String name;
@Persistent
private String type;
@Persistent
private String line1;
@Persistent
private String line2;
@Persistent
private String city;
@Persistent
private String state;
..
QUERY..
PersistenceManager pm = PMF.get().getPersistenceManager();
// Check if the customer already exists..
Query queryCustomer = pm.newQuery(Group.class, "customerID ==
customerIDParam");
queryCustomer
.declareParameters("String customerIDParam");
List<Customer> customerList = (List<Customer>)
pm.newQuery(queryCustomer).execute(customerData.getCustomerID());
When the query is executed I get an exception:
throws java.lang.IllegalArgumentException' threw an unexpected
exception:
com.google.appengine.api.datastore.DatastoreNeedIndexException: no
matching index found.. <datastore-index kind="Address"
ancestor="true" source="manual">
<property name="customerAddress_INTEGER_IDX" direction="asc"/>
</datastore-index>
I am wondering if I am doing something wrong here. My expectation was
that since this is a basic One to Many dependent relationship, I dont
have to maintain any kind of indices. Any feedback would be
appreciated.
Thanks a lot.
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