Hi, Our current code is using drools 5.0. We have some custom evaluators, which are working fine with 5.0. example *Code from Rule:* Student(code compareCode "426656000, 426979002, 427295004" ) Where Student is a class & "code" is String field in that class. & compareCode is a custom operator using custom evaluator. as follows. *code from OP class:* public static final Operator COMPARE_CODE = Operator.addOperatorToRegistry( "compareCode", false ); *Part from Evaluator Definitions class* private EvaluatorCache evaluators = new EvaluatorCache() { private static final long serialVersionUID = 100L; { addEvaluator( ValueType.STRING_TYPE, D1Operator.COMPARE_CODE, CodeEvaluator.INSTANCE ); } }; public static class CodeEvaluator extends BaseEvaluator { private static final long serialVersionUID = 100L; public final static Evaluator INSTANCE = new CodeEvaluator(); public CodeEvaluator() { super( ValueType.STRING_TYPE, D1Operator.COMPARE_CODE ); } public boolean evaluate(InternalWorkingMemory workingMemory, final InternalReadAccessor extractor, final Object object1, final FieldValue object2) { final Object value1 = extractor.getValue( workingMemory, object1 ); //System.out.println("************* in CodeEqualEvaluator.evaluate"); final Object value2 = object2.getValue(); if ( value1 == null ) { return value2 == null; } //return value1.equals( value2 ); return Utility.checkCode((String)value2, (String)value1); } Problem: Now If I update my Eclipse Drool plugin to 5.2.1 or 5.3 I start getting error Evaluator does not support type 'ValueType = 'Object' see attached snapshot/ http://drools.46999.n3.nabble.com/file/n3683440/Drool_problem.jpg Drool_problem.jpg Thanks. -- View this message in context: http://drools.46999.n3.nabble.com/Custom-Evaluator-compile-time-error-If-... 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 laune, I already tried it yesterday i.e change it OBJECT_TYPE, but then getting STING_TYPE error at some places in the rule.. Could you pls. explain what related change in drool API made after 5.0? -- View this message in context: http://drools.46999.n3.nabble.com/Custom-Evaluator-compile-time-error-If-... 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