Re: [rules-users] list operations in "then" part

I cannot reproduce this error. Do NOT rely on the automatic substitution of getters for simple field accesses on a rule's right hand side, at least not for 5.2.0 CR. Moreover, I cannot compile the constraint    "jones" memberOf authors This should be written as    authors contains "jones". For further analysis full workable code reproducing the issue would be required. -W On 3 June 2011 22:47, Simon Chen <simonchennj(a)gmail.com&gt; wrote: > > Can I maybe do a for loop in the "then" part? Is there a documentation > regarding what is possible/impossible in the "then" part? > > Thanks. > -Simon > > On Fri, Jun 3, 2011 at 3:23 PM, Simon Chen <simonchennj(a)gmail.com&gt; wrote: > > No, this doesn't work... > > > > Drools-5.2 doesn't help either :-( > > > > 2011/6/2 Joe White <Joe.White(a)recondotech.com&gt;: > >> If you cast $b on the RHS it will probably work. We’ve had to do this > >> in the > >> past for rules like this. > >> > >> > >> > >> …. > >> > >> then: > >>  Test fact = new Test(); > >> > >> Book rhsBook = (Book)$b; > >>  fact.getList().addAll( rhsBook.authors ); > >>  insert(fact); > >> end > >> > >> > >> > >> > >> > >> From: rules-users-bounces(a)lists.jboss.org > >> [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mark Proctor > >> Sent: Thursday, June 02, 2011 8:52 AM > >> To: rules-users(a)lists.jboss.org > >> Subject: Re: [rules-users] list operations in "then" part > >> > >> > >> > >> On 02/06/2011 08:14, Wolfgang Laun wrote: > >> > >> On 1 June 2011 21:43, Simon Chen <simonchennj(a)gmail.com&gt; wrote: > >> > >> Hi all, > >> > >> I am always confused about what we can do in the "then" part of the > >> rule. > >> > >> In particular, I have problem duplicate a list. For example: > >> > >> when: > >>  $b: Book( "james" memberOf authors ) > >> then: > >>  Test fact = new Test(); > >>  fact.getList().addAll( $b.authors ); > >>  insert(fact); > >> end > >> > >> The error message reads like this: > >> > >> BuildError: Unable to build expression for 'consequence': [Error: > >> Failed to compile: 2 compilation error(s): > >>  - (1,7) unqualified type in strict mode for: $b > >>  - (1,12) unqualified type in strict mode for: authors] > >> > >> What is the right way to do this? > >> > >> Granted - the error message is a puzzle in itself, but basically, the > >> RHS > >> must be written according to Java rules. Hence, if $b is an object of > >> type > >> Book, $b.authors depends on the (Java!) visibility of member authors. > >> If it > >> isn't public, you must use the getter. > >> > >> I believe he's using "mvel" judging by the error. > >> > >> mark > >> > >> > >> -W > >> > >> > >> Thanks. > >> -Simon > >> _______________________________________________ > >> rules-users mailing list > >> rules-users(a)lists.jboss.org > >> https://lists.jboss.org/mailman/listinfo/rules-users > >> > >> > >> > >> > >> > >> _______________________________________________ > >> > >> rules-users mailing list > >> > >> rules-users(a)lists.jboss.org > >> > >> https://lists.jboss.org/mailman/listinfo/rules-users > >> > >> > >> > >> _______________________________________________ > >> rules-users mailing list > >> rules-users(a)lists.jboss.org > >> https://lists.jboss.org/mailman/listinfo/rules-users > >> > >> > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users