On 28/11/2013, Tales Costa <tales(a)ibiseng.com&gt; wrote: > Hi, > > I am new to Drools and Optaplanner and have built a first model and > succeeded running with java score calculation. Now am struggling trying to > use rules for score. > > Have read "Drools Expert User Guide" and looked through Optaplanner > examples but am still confused. Main difficult is discovering what can do > and can´t do with java dialect within the "when" and "then" blocks. Are > there tutorial and/or other references I could look into for more > information on this ? The rules are actually quite simple. LHS: Any boolean expression is valid, with the shortcuts for accessing members. If the parser misbehaves, try eval() - there it's pure Java. RHS: Java code, as in any method, plus the "macros" defined in Expert. That said, some things should not be done: * Never use side effects in LHS expressions that modifies anything in working memory. * Don't write long "then" parts; calling static methods is preferred. -W > > regards > > Tales > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users