Thanks! Wolfgang --- On Sun, 28/8/11, Wolfgang Laun <[email protected]> wrote:
From: Wolfgang Laun <[email protected]> Subject: Re: [rules-users] rule parse error for null check To: "Rules Users List" <[email protected]> Date: Sunday, 28 August, 2011, 11:33 PM See JBRULES-3064, dialect "mvel" flouts generic parameters. If you omit "<String,Integer>" after "new HashMap" all is well. Of course, this is another MVEL bug or restriction - who knows. But don't try to work around this by then if($u.subjectGradeMap == null){ $u.subjectGradeMap = new HashMap/*<String,Integer>*/(); } You'll just run into another MVEL bug. -W 2011/8/28 Neel <[email protected]> Hi,I'm using drools-5.3.0.Beta1. I've following rule file: import java.util.*; declare Student name : String @key subjectGradeMap : HashMap end rule "Subject grade points" dialect "mvel" when $u : Student() then if($u.subjectGradeMap == null) { $u.subjectGradeMap = new HashMap<String,Integer>(); } $u.subjectGradeMap["CompSc"] += 100; System.out.println("Marks added"); end I get following error while rule compilation: Unable to Analyse Expression if($u.subjectGradeMap == null); { $u.subjectGradeMap = new HashMap<String,Integer>(); }; $u.subjectGradeMap["CompSc"] += 100; System.out.println("Marks added");: [Error: was expecting type: java.lang.Object; but found type: <Unknown>] [Near : {... if($u.subjectGradeMap == null) ....}] ^ [Line: 1, Column: 1] : [Rule name='Subject grade points'] Please let me know if this is correct usage in the above scenario. Thanks, Neel _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users -----Inline Attachment Follows----- _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
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