Re: [rules-users] Ask for help on rule authoring

If the age is String type, can I use Integer.parseInt(age) to change to integer and then evaluate it? like when ad : ApplicationData(Integer.parseInt(age) < 0) then ad.setReturnMsg("age should not be negative 0") end 2011/3/26 Wolfgang Laun <wolfgang.laun(a)gmail.com&gt;: > Sorry, I don't use guided editors. > -W > > On 25 March 2011 18:17, Benson Fung <benson.redhat(a)gmail.com&gt; wrote: >> >> Hi Wolfgang, >> >> I managed to author this rule(ApplicationData( age == null || age == >> "" )) via Technical Rules editor of BRMS. >> However, I cannot create this rule via Business Rule Guided Editor of >> BRMS. >> >> Could you let me know how? >> >> >> Thanks >> >> >> >> 2011/3/26 Wolfgang Laun <wolfgang.laun(a)gmail.com&gt;: >> > You can't use a method call as the left hand side operand in a >> > constraint; >> > thus >> > age.size() == 0 >> > is not correct. >> > >> > Do you really mean >> > age == "null" >> > >> > Probably >> > ApplicationData( age == null || age == "" ) >> > is the right thing to do, provided that ApplicationData.age is a String. >> > >> > -W >> > >> > On 25 March 2011 17:32, Benson Fung <benson.redhat(a)gmail.com&gt; wrote: >> >> >> >> Hi, >> >> >> >> I got the following rule problem. >> >> >> >> The rule is like : >> >> >> >> 1. | rule "Rule1" >> >> 2. | dialect "mvel" >> >> 3. | when >> >> 4. | ad : ApplicationData( age == "null" , >> >> age.size() >> >> == 0) >> >> 5. | then >> >> 6. | ad.setReturnMsg( "age should not be null or >> >> empty" >> >> ); >> >> 7. | end >> >> >> >> where setReturnMsg is a method of ApplicationData Fact(); >> >> >> >> However, I got the validation error : >> >> >> >> [Rule1] [ERR 101] Line 4:49 no viable alternative at input ')' in rule >> >> "Rule1" in pattern ApplicationData >> >> [Rule1] [ERR 102] Line 4:51 mismatched input '==' expecting ')' in >> >> rule "Rule1" in pattern ApplicationData >> >> >> >> Please help what the problem is. >> >> >> >> >> >> Thanks >> >> _______________________________________________ >> >> 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