e.g. add an ID field to Person that is incremental in value on subsequent &quot;people&quot;<br><br>person1: Person( $firstName1: firstName, $id : id )<br>
 person2: Person( firstName != $firstName1, id &gt; $id )<br><br>This ensures only one match of person1 and person2 will occur, not person2 and person1.<br><br><div class="gmail_quote">On 29 March 2012 12:43, arup <span dir="ltr">&lt;<a href="mailto:arup4u2007@gmail.com">arup4u2007@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi laune<br>
Thanks for the solution. but i am confused a bit with point (b).<br>
how to add a constraint asserting an ordering between Persons in drl. sorry<br>
it may seem silly Qs but i&#39;m new to drools and really want to know that. Can<br>
u explain in detail. Thanks again for the solution.<br>
<br>
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