Hello, What is the best practice for reusing rules? I've got a license number validation rule that I need to reuse for different fact types. For example, the first rule uses the license number in a CitationDTO fact: rule "Citation DL Number" ruleflow-group "CitationEntryValidationFlow" when CitationDTO($dln : citationSubject.driverLicense.driverAuthorizationId not matches "^.{5,15}$") then resultHolder.setMessage(GenericCitationFieldIds.DLN,"DLN [{0}] must be at least 5 characters long and no more than 15 characters long.", new Object[]{$dln}); end Then I have another rule that uses the license number from the InCourtSearchDTO: rule "InCourt DL Number" ruleflow-group "InCourtSearchValidationGroup" when InCourtSearchDTO( $d : dln not matches "^.{5,15}$") then resultHolder.setMessage(UserLogonFieldIds.END_DT,"DLN [{0}] must be at least 5 characters long and no more than 15 characters long.", new Object[]{$d}); end Obviously this is a poor implementation because the license number check 'not matches "^.{5,15}$"' is duplicated. Is there a way I can reuse this rule? Thanks! _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks for the reply. I was hoping to avoid refactoring the fact objects. 2009/12/15 Edson Tirelli <ed.tirelli(a)gmail.com&gt; > > 2 ways: > > 1. If you have a common superclass/interface for your objects and the > superclass/interface has the method to return your dln, just make use of > inheritance: > > when > MyDTOInterface( dln not matches "^.{5,15}$") > then > // do something > > 2. If you want to use composition instead, make dln a top level fact: > > when > DLN( id not matches "^.{5,15}$") > then > // do something > > Edson > > 2009/12/15 Jason Davidson <jljdavidson(a)gmail.com&gt; > >> Hello, >> >> What is the best practice for reusing rules? I've got a license number >> validation rule that I need to reuse for different fact types. For example, >> the first rule uses the license number in a CitationDTO fact: >> rule "Citation DL Number" >> ruleflow-group "CitationEntryValidationFlow" >> when >> CitationDTO($dln : >> citationSubject.driverLicense.driverAuthorizationId not matches "^.{5,15}$") >> then >> resultHolder.setMessage(GenericCitationFieldIds.DLN,"DLN [{0}] >> must be at least 5 characters long and no more than 15 characters long.", >> new Object[]{$dln}); >> end >> >> Then I have another rule that uses the license number from the >> InCourtSearchDTO: >> rule "InCourt DL Number" >> ruleflow-group "InCourtSearchValidationGroup" >> when >> InCourtSearchDTO( $d : dln not matches "^.{5,15}$") >> then >> resultHolder.setMessage(UserLogonFieldIds.END_DT,"DLN [{0}] must >> be at least 5 characters long and no more than 15 characters long.", new >> Object[]{$d}); >> end >> >> Obviously this is a poor implementation because the license number check >> 'not matches "^.{5,15}$"' is duplicated. Is there a way I can reuse this >> rule? >> >> Thanks! >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss by Red Hat @ www.jboss.com > > _______________________________________________ > 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