Senlin Liang wrote: 
One more question: does drools index intermediate results (such as the
inserted objects in actions)?
Any inserted object used in == constraints is indexed for that constraint.
Is there any cost-based optimization for queries?
no
Thanks

On Wed, Oct 15, 2008 at 9:10 AM, Senlin Liang <senlin.liang@gmail.com> wrote:
  
Hi all,

I got one question: How does drools index the objects in memory? Does
it use hashing index, based on what? Or drools uses adaptive indexing?

Thanks a lot,
Senlin