Yes, it is always possible to modify/insert facts as a consequence of a rule... Form what part of the docs do you infer that facts cannot be modified as part of the rule consequence. -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-Possibly-stupid-question-bu... Sent from the Drools: User forum mailing list archive at Nabble.com.

Why would you need to do that? This flow is logically the same. rule "my rule" when ... then //Java code to modify fact goes here insert( fact ); end Joe -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of menada Sent: Thursday, July 28, 2011 2:20 PM To: rules-users(a)lists.jboss.org Subject: Re: [rules-users] Possibly stupid question... but I have to ask I meant to insert a fact and immediatly modify it, in the same rule consequence. I know you can insert OR modify in a consequence. I also know that when you modify a fact you actually retract the old one and insert a new one with the respective properties set. So, my question was, can you do something like this ? rule "my rule" when ... then insert( fact ); modify (fact ); end Where fact is the same? And if it's possible, can you give me a simple example? -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-Possibly-stupid-question-b ut-I-have-to-ask-tp3207666p3207709.html Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

On 28 July 2011 23:36, menada <eujenia(a)gmail.com&gt; wrote: (1) X x = new X(...); x.setA(...);...x.setZ(...); insert( x ); (2) X x = new X(...); insert( x ); modify( x ){ setA(...),..., setZ(...) } These two sequences are logically equivalent - you'll have equal objects and facts x at the end. But (1) is decidedly preferred because it is much less work for the engine. Consider: the "insert" in (2) sends it on one direction and then the modify instructs it otherwise. -W