Re: [rules-users] Re: Drools indexing
Thanks Mark!
I got another question: what kind of indexing is used in drools? what
field does it index?
I checked the online manual, it seems that I uses hashing index, but i
am not sure the details.
The reason that I am asking this question is that: drools runs really
faster for one of my program. In this program, there is information
about DBLP publications:
a(primary key, property, values), where primary key is the primary
key of one publication, property can be one of "author, year, ...",
and value is the value of the property. I run the query by joining the
tables together using the primary key. Drools runs really fast for
this program.
I am wondering whether there is anything behind to make drools fast.
Senlin
On Wed, Oct 15, 2008 at 3:41 PM, Mark Proctor <mproctor(a)codehaus.org> wrote:
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(a)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
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Senlin Liang