Hmm. What happens if you put @Basic annotations on the fields in Address?
-Patrick
On 8/13/07, Joe Grassel <[EMAIL PROTECTED]> wrote:
> Looks like the only query that goes out is:
>
>
> [main] openjpa.jdbc.SQL - <t 16515324, conn 1700554076> executing prepstmnt
> 1983018546 SELECT t0.EMP_TYPE, t1.id, t0.dept_id, t0.description,
> t0.manager_id FROM Employee t0 LEFT OUTER JOIN Address t1 ON t0.address_id =
> t1.id WHERE t0.id = ? [params=(int) 1]
>
>
> On Monday, August 13, 2007, at 02:37PM, "Patrick Linskey" <[EMAIL PROTECTED]>
> wrote:
> >> Is this a bug in OpenJPA, or is a proxy object supposed to be in the
> >> Address entity's place?
> >
> >I would expect the address data to be available.
> >
> >What SQL is produced by the find call?
> >
> >-Patrick
> >
> >On 8/13/07, Joe Grassel <[EMAIL PROTECTED]> wrote:
> >> Hello, I'm writing a program that is trying to capitalize on FetchGroups,
> >> but I'm hitting some behavior that I was not expecting, based on what I
> >> read from the manual.
> >>
> >> I have two entities, Employee and Address, as follows:
> >>
> >> @Entity
> >> @FetchGroups({
> >> @FetchGroup(name="DescFetchGroup", attributes= [EMAIL
> >> PROTECTED](name="description")} ),
> >> @FetchGroup(name="AddressFetchGroup", attributes= [EMAIL
> >> PROTECTED](name="address")} )
> >> //...
> >> })
> >> public class Employee {
> >> @Id
> >> private int id;
> >>
> >> //...
> >>
> >> @Basic(fetch=FetchType.LAZY)
> >> private String description;
> >>
> >> @OneToOne(fetch=FetchType.LAZY)
> >> private Address address;
> >>
> >> //...
> >>
> >> }
> >>
> >> and
> >>
> >> @Entity
> >> public class Address {
> >> @Id
> >> private int id;
> >>
> >> private String street;
> >> private String city;
> >> private String state;
> >> private int zip;
> >>
> >> //...
> >>
> >> public String toString()
> >> {
> >> StringBuffer sb = new StringBuffer();
> >> sb.append("Address(id=").append(this.id).append(")");
> >> sb.append(": street=").append(getStreet());
> >> sb.append(": city=").append(getCity());
> >> sb.append(": state=").append(getState());
> >> sb.append(": zip=").append(getZip());
> >>
> >> return new String(sb);
> >> }
> >> }
> >>
> >> This is what I'm trying to do:
> >>
> >> // ...
> >> OpenJPAEntityManager oem = (OpenJPAEntityManager) em;
> >> oem.getFetchPlan().addFetchGroups("DescFetchGroup");
> >> oem.getFetchPlan().addFetchGroups("AddressFetchGroup");
> >>
> >> oem.clear();
> >> Employee emp = oem.find(Employee.class, 1);
> >> oem.clear();
> >>
> >> if (emp.getDescription() != null)
> >> System.out.println("Employee description=" + emp.getDescription());
> >> else
> >> System.out.println("Description is null");
> >>
> >> if (emp.getAddress() != null)
> >> System.out.println("Employee address=" + emp.getAddress());
> >> else
> >> System.out.println("Address is null");
> >>
> >> // ...
> >>
> >> I get the following results:
> >>
> >> Employee description=Description 1
> >> Employee address=Address(id=1): street=null: city=null: state=null: zip=0
> >>
> >> It looks like an empty proxy object containing just the Address entity's
> >> primary key is returned. I was under the impression that with the
> >> AddressFetchGroup added to the fetch plan, that the whole (Address)
> >> entity's persistent state would be eagerly loaded.
> >>
> >> Is this a bug in OpenJPA, or is a proxy object supposed to be in the
> >> Address entity's place?
> >>
> >
> >
> >--
> >Patrick Linskey
> >202 669 5907
> >
> >
>
--
Patrick Linskey
202 669 5907
