Should predicate constraints be sensitive to whitespace?? I have the following rule with a predicate constraint: rule "test" when valObj : MyValuesObject(a:aVal, b:bVal, c:cVal -> ((a.intValue() < (1/780) * (b.intValue() + c.intValue()) && (b.intValue() + c.intValue()) > 500000) then System.out.println("Alert condition met on obj:" + valObj); end Inserting whitespace into the predicate results in the following exception: org.drools.rule.InvalidRulePackage: unknown:155:85 mismatched token: [@1723,5226:5227='\r\n',<4>,155:85]; expecting type ')' unknown:156:28 mismatched token: [@1752,5256:5256='(',<23>,156:28]; expecting type ')' If instead I use an eval on the LHS, I can insert whitespace without an exception. In addition, I would like to know if there are any plans to simplify the syntax for similar types of rules, as the above is extremely unwieldy for the non-expert. For instance, I would vastly prefer to write the following: rule "test" when valObj : MyValuesObject(a:aVal, b:bVal, c:cVal) (a < (1/780)*(b+c)) ((b + c) > 500000) then System.out.println("Alert condition met on obj:" + valObj); end Also, since everything in rules needs to be an Object, is there any plan to make the operators deal with said Objects? That is, so I do not always have to de-reference with my eval or predicate objects with intValue() or floatValue() or whatever? In our application, the user (i.e. not a drools or java expert) will be writing the rules. The current syntax requirements for encoding the above simple rule makes me very nervous about our users ever being able to use the rules effectively. Thanks, Justine ------------------------------------------------------------------------ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Yay!! I was just looking into moving on to the trunk. Unfortunately we have a code freeze tomorrow, so it might have to wait a few days. Yes, apparently I made a typo when I typed in the example (trying to simplify it, argh!). And while I said it was sensitive to whitespace, the whitespace I actually meant was a line break. Here is the actual rule, which will compile without a line break in the predicate. However, if I insert a line break at the &&, it throws: rule "snapshot" no-loop true when snap : Scalper120Values(id:uniqueId, shares:sharesFilled, buy:buyShares, sell:sellShares ->((shares.intValue() < (1/780) * ( buy.intValue() + sell.intValue()))&&((buy.intValue() + sell.intValue()) > 500000))); then System.out.println("blah"); end On 2/8/07, Edson Tirelli <tirelli(a)post.com&gt; wrote: > > > Justine, > > It shouldn't be space sensitive. Where are you inserting the space > that is giving you the error? I see your line bellow is missing a ')' in > the end, but maybe it was a mistake when you wrote the e-mail... so, > could you please clarify? > > In trunk the syntax was simplified to almost what you asked for. In > trunk you can write: > > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users