[OJB-developers] How to dynamic lazy-load a field or a collection in runtime?

[John W. <hw...@re...>]

As my application needs a high performance design, I am wondering =
whether it is possible to modify the classdescriptor in the runtime, to =
disable the loading of unneeded fields, and for collections, don't load =
the collection object's primary keys at all (the collection may contain =
thousands of items), but load only when needed. Can I do it in the =
runtime?

Say that for an user, it has following categoties of info:
1. basic info: id, name,=20
2. extended info: home address
3. clob field: photo
4. collection: a long list of friends

When retrieve a list of users, it only need to retrieve the basic info; =
when view a specific user, it needs the extended info; when you want to =
photo, you need to clob fields. You certainly don't want to get the =
friends until you want to view a specific user, and also no need to =
retrieve primary keys of friends collection, too.

Is it possible to do using OJB?

Thanks a lot,
John W