Use of a DAO in LHS

I suspect you may not have read the documentation.

Take a look at the "from" keyword.

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of BINET JEAN-BAPTISTE
Sent: 08 August 2008 16:01
To: rules-users@lists.jboss.org
Subject: [rules-users] Use of a DAO in LHS

Hello,

I have a DRL file in which I have a global variable representing a DAO.
So, I succeed in writting a rule which uses this DAO to run a SQL query
on the database from the RHS part.
But now, I would like to use my DAO in the LHS, I mean I want to fire my
rule only if a condition is ok on the result of my SQL query.
Is it possible to call a method of my DAO in the LHS part ?
I have not found an example.

Thanks.

Regards,

Jean-Baptiste