I suspect you may not have read the documentation. Take a look at the "from" keyword. ________________________________ From: rules-users-bounces(a)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(a)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

Hi Jean-Baptiste, Here is a good (complete) example you can try following: http://www.redhatmagazine.com/2008/07/11/jboss-drools-meets-hibernate/ With kind regards, Mike ________________________________ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of BINET JEAN-BAPTISTE Sent: 11 August 2008 08:06 To: Rules Users List Subject: RE: [rules-users] Use of a DAO in LHS On the contrary of what you said I read the documentation. And there is this sentence : "The next example shows how we can reason over the results of a hibernate query. The Restaurant pattern will reason over and bind with each result in turn:" but after there is no example !!!! I already tried to use the from keyword but I didn't succeed in writting a good syntax. So, that's why I ask the question. The only thing I succeed in is to write a function which uses my dao to do SQL query.Then I call this function with "eval" in the LHS. But how to use the "from" keyword ??? BR Jean-Baptiste ________________________________ De : rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] De la part de Anstis, Michael (M.) Envoyé : vendredi 8 août 2008 17:36 À : Rules Users List Objet : RE: [rules-users] 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(a)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(a)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