Wolfgang, Thanks for the explanation. It helps.
regards On Fri, Nov 29, 2013 at 6:00 AM, Wolfgang Laun <wolfgang.l...@gmail.com>wrote: > On 28/11/2013, Tales Costa <ta...@ibiseng.com> 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@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >
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