Re: Question on object trees and ODMG use

[Thomas Mahler]

Hi again Russel,

Russell Smyth wrote:

In trying to get our application working, I am not sure if we are having a mapping problem, or if I dont understand OJB/ODMG (quite possible) so I have
a few questions that will help me narrow down my problem:

1 - does ODMG autoload a complete object graph?

This depends on your repository. ODMG uses the same repository information as the PersistenceBroker. All repective information can be found in Tutorial3.html and in repository.html

ours does not seem to - it
will
only load the first level deep. If this is as it should be, I can stop
looking, however
if it should load the whole graph, I will have more to look at!

It should be easy to configure full loading.

2 - If I have an interface MyInterface, and a class MyClass that implements
that
interface, and a class MyContainedClass which MyClass contains a reference
to

  MyInterface
     /^\
      |
   MyClass -- > MyContainedClass

  when I do an OQL query "select classes from MyInterface", should any
returned
MyClass objects have their MyContainedClass references loaded?

As mentioned above: It depends on repository if loading is done or not, if proxies are used or not, if prefetching is used or not, etc.

What I am
observing
is that this will not work, however if I simply change the query to "select classes from MyClass" the MyClass instances returned do have their
references loaded.

Mhh? We must have a look at your entity classes and at your repository_user.xml.

cheers,
Thomas

I think I have my repo configured properly, but knowing these answers may
help me determine so.

Thankyou in advance
Russell




--
To unsubscribe, e-mail:   <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>

--
To unsubscribe, e-mail:   <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>