Thanks to both of you for the quick response! Howard
2009/3/20 Edson Tirelli <[email protected]> > > Wolfgang is right in its suggestion. > > Just to explain what the problem is, in previous versions of drools, > forall() could not be used with an embedded from. It is fixed in trunk. > > []s > Edson > > 2009/3/20 Wolfgang Laun <[email protected]> > > You don't need forall to solve your problem. The following rule prints all >> patient names which don't have problem 4711; omitting the 'not' prints >> those suffering from Colognitis. >> >> rule lookJoe >> when >> $patient: Patient() >> not ( Problem( code == "4711" ) from $patient.problemList ) >> then >> System.out.println( $patient.getName() ); >> end >> >> 'not' implies quantification (or exhaustive search over the domain). >> Without 'not' also searches all Problem entries of the current Patient >> so it would fire again if the patient has a problem stored more than >> once. >> >> -W >> >> >> > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss, a division of Red Hat @ www.jboss.com > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > >
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