Get entity as return of collection in entity framework

Question

how to get entity as return of collection in entity framework,,, i dont have any idea...
when i select entity and then get column information then no column return .....

Answer 1

The way the Oracle provider works right now requires that you use a cursor, even if you want to map it to an entity. To map it to an entity, that cursor needs to contain the necessary columns to form the entity (ie: it's returning data from the same table).
Here's an example from one I have mapped:
CREATE OR REPLACE PROCEDURE ENVMSTR.P_ORG_UNIT_R_BY_STAFF
STAFF_ID_P IN NUMBER
, RESULT_CURSOR_P OUT SYS_REFCURSOR
) AS
BEGIN
OPEN RESULT_CURSOR_P FOR
select *
from dept_organizational_unit d
where deptorgunit_cd = (select deptorgunit_cd from staff where staff_id = STAFF_ID_P)
or deptorgunit_cd in ( select deptorgunitrel_parent_cd from dept_org_unit_relation
start with deptorgunitrel_child_cd = (select deptorgunit_cd from staff where staff_id = STAFF_ID_P)
connect by prior deptorgunitrel_parent_cd = deptorgunitrel_child_cd);
END P_ORG_UNIT_R_BY_STAFF;
web.config:
<add name="ENVMSTR.P_ORG_UNIT_R_BY_STAFF.RefCursor.RESULT_CURSOR_P" value="implicitRefCursor bindinfo='mode=Output'" />
With those things set up, I'm able to import the function and map it to the entity that represents the dept_organizational_unit table (that entity is called OrgUnit in the model, but it doesn't really matter what you call it). The interesting thing I found is that in this situation I didn't actually have to add config file entries for each column in the cursor, probably because it maps perfectly to the entity. If I was trying to use a complex type instead then I probably would (and the configuration required to do that gets horrific in a hurry).