Robert,
Here is the working SQL
select customer.billAddressOID, custAddress.oid, customerID, lastName
from customer, custAddress where customer.billAddressOID =
custAddress.oid;
This SQL returns the result set that I am needing. My brain is stuck
in SQL, and I am trying to train myself to think from the Cayenne
perspective. I would like to end up with a List of Customer entities.
Customer has two addresses (billing & shipping both are to-one
relationships). I would like to search for a list of Customers based
on individual fields in each of the address entities.
Thanks,
Joe
On Mar 14, 2009, at 3:53 PM, Robert Zeigler wrote:
Hi Joe,
How about:
SelectQuery query = new SelectQuery(Entity1.class);
query.setQualifier(ExpressionFactory.matchExp(Entity1.EN|
TITY2_PROPERTY,entity2));//where ENTITY2_PROPERTY is the name of
object property in entity1 that points to entity2
List<Entity1> e1 = objectContext.performQuery(query);//note: perform
query is NOT generified, so you'll get a warning here.
Robert
On Mar 14, 2009, at 3/141:29 PM , Joe Baldwin wrote:
I am attempting to create the simplest Cayenne-expedient method of
doing the following query. (I can easily do this in SQL but am a
tad confused with the Cayenne Expression method.)
I have an Entity (E1) with a one to one relationship with a second
entity (E2). I would like to perform a SELECT Query with a filter
on one of the fields of the relationship-entity (E2.F1) and return
a list of the first entity (E1List).
What is the most efficient Cayenne way to do this? (I am still a
bit confused concerning how to construct efficient queries in the
object domain vs the relational domain.)
Thanks,
Joe
