I have the below two requirement for Drools implementation. 1. To use a java method(with single argument) of my application class in the 'LHS' of the rule . 2. To pass the object set in 'RHS' of the rule back to my application. Is it possible to implement point 1 and point 2 as below ? Example : Application class is defined as : //Class for getting various types from my application package application.custom; public class Project { public string getStringValue(String name) { <Logic of the application> return ; } } //Class 2 for setting the rule result package application.customresults; public class ProjectResults { public void setResult(String name) { <Logic of the application> }} =========================================================================== Drl file like : package application.rules #I shall set the object 'projRes' in my appl using setGlobal global application.customresults.ProjectResults projRes ; import application.custom.Project; rule "project-1.option1" when $proj : application.custom.Project(); eval ($proj.getStringValue("Drools") .equals ("ABC")) # Logic specific to my application then #Requirement is to set and make use of the object 'projRes' in my application modify (projRes) {projRes.setResult("Drools project"); } end rule "project-1.option2" when $proj : application.custom.Project(); $projRes : application.customresults.ProjectResults(); eval ($proj.getStringValue("Java") .equals ("DEF")) # Logic specific to my application then #Requirement is to set and make use of the object 'projRes' in my application modify (projRes) {projRes.setResult("Java project"); } end Please let me know if the above way of writing the drl would suffice both the requirements (or) is there a better way to implement it. Thanks Dibya -- View this message in context: http://drools.46999.n3.nabble.com/Drools-Queries-with-relation-to-the-LHS... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Just to clarify .. 1. The fact ,that will be send from my appl ,will be having a list of name value pairs like Name Value ---------- ------------------- Drools ABC Java XYZ Pega false TimeOut 60 I have already java classes in my application which returns the value (when by pass the 'named string' to it) Eg : If I pass the named value as 'TimeOut' with a java method in my appl ,the method replies with value as '60' for the above object (datatype pertaining to the 'named value' will be returned..hence have different menthods to handle it).

2 . Second requirement is to pass the object ('projRes ') back to my application . To do this ,I tried to set the java object (referred here as 'projRes') for holding the result part of the drl and set it in WM using setGlobal(). Then I declare the same object in the 'global' part of the rule and use it in RHS of the rule.

Could anyone clarify ,if I can achieve the second requiremnt in this way (or) is there a bteer way todo it ? BR D -- View this message in context: http://drools.46999.n3.nabble.com/Drools-Queries-with-relation-to-the-LHS... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks .. Just to summarize : My modified drl file should be looking something like this (for both the requirements mentioned). Could you pls verify : =============================================================================== package application.rules global application.customresults.ProjectResults projRes ; import application.custom.Project; rule "project-1.option1" when $proj : Project(); eval ($proj.getStringValue("Drools") .equals ("ABC")) then projRes.setResult("Drools project"); end rule "project-1.option2" when $proj : Project(); eval ($proj.getStringValue("Java") .equals ("DEF")) then projRes.setResult("Java project"); end =============================================================================== -- View this message in context: http://drools.46999.n3.nabble.com/Drools-Queries-with-relation-to-the-LHS... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users