Drools problem

[earnest.dyke]

Greetings all,


I am using Seam 2.0.0 and Drools 4.0.7. I am getting the following exception when my rule is compiled on first access.

_Rule:_


package org.ebsinc.ia.rules

#list any import classes here.

import org.ebsinc.ia.entity.BenefitAnalysis;
import org.ebsinc.ia.entity.RetirementEligibility;

#declare any global variables here

rule "Verify FERS"
        when
                $ba : BenefitAnalysis(plan == "FERS")
                $elig : RetirementEligibility(eligible == false)
        then
                System.out.println("FERS retirement");
                $elig.setReason("ok");
end


_components.xml_

        <drools:rule-base name="securityRules" >
                <drools:rule-files>
                        <value>/security.drl</value>
                </drools:rule-files>
        </drools:rule-base>

        <drools:rule-base name="retirementEligibility">
                <drools:rule-files>
                        <value>/RetirementEligibility.drl</value>
                </drools:rule-files>
        </drools:rule-base>
        <drools:managed-working-memory name="retirementEligibilityWM" scope="event"
                auto-create="true" rule-base="#{retirementEligibility}" />
_Exception:_


2008-08-26 08:40:37,750 ERROR [STDERR]         at org.drools.rule.builder.dialect.java.JavaConsequenceBuilder.build(JavaConsequenceBuilder.java:123)
        at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:67)
        at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:446)
        at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304)
        at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167)
        at org.jboss.seam.drools.RuleBase.compileRuleBase(RuleBase.java:58)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
        at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:125)
        at org.jboss.seam.Component.callComponentMethod(Component.java:2074)
        at org.jboss.seam.Component.callCreateMethod(Component.java:1997)
        at org.jboss.seam.Component.newInstance(Component.java:1968)
        at org.jboss.seam.Component.getInstance(Component.java:1865)
        at org.jboss.seam.Component.getInstance(Component.java:1832)
        at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
        at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
        at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:166)
        at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:53)
        at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
        at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
        at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
        at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
        at org.jboss.seam.core.Expressions$1.getValue(Expressions.java:112)
        at org.jboss.seam.drools.ManagedWorkingMemory.getRuleBaseFromValueBinding(ManagedWorkingMemory.java:78)
        at org.jboss.seam.drools.ManagedWorkingMemory.getStatefulSession(ManagedWorkingMemory.java:67)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
        at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:125)
        at org.jboss.seam.Component.callComponentMethod(Component.java:2074)
        at org.jboss.seam.Component.unwrap(Component.java:2100)
        at org.jboss.seam.Component.getInstance(Component.java:1879)
        at org.jboss.seam.Component.getInstance(Component.java:1832)
        at org.jboss.seam.Component.getInstanceInAllNamespaces(Component.java:2174)
        at org.jboss.seam.Component.getValueToInject(Component.java:2126)
        at org.jboss.seam.Component.injectAttributes(Component.java:1590)
        at org.jboss.seam.Component.inject(Component.java:1408)
        at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:45)
        at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
        at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
        at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:155)
        at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:91)
        at org.ebsinc.ia.action.AgentAction_$$_javassist_2.getClientSearchKey2(AgentAction_$$_javassist_2.java)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at javax.el.BeanELResolver.getValue(BeanELResolver.java:62)
        at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
        at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
        at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53)
        at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
        at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
        at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
        ... 89 more
Caused by: org.mvel.UnresolveablePropertyException: unable to resolve token: declr.identifier
        at org.mvel.ASTNode.getReducedValue(ASTNode.java:324)
        at org.mvel.ast.PropertyASTNode.getReducedValue(PropertyASTNode.java:32)
        at org.mvel.MVELInterpretedRuntime.parseAndExecuteInterpreted(MVELInterpretedRuntime.java:110)
        at org.mvel.MVELInterpretedRuntime.parse(MVELInterpretedRuntime.java:58)
        at org.mvel.TemplateInterpreter.execute(TemplateInterpreter.java:403)

[thejavafreak]

I think you should ask this in the JBoss Rules mailing list as you would get a better answer there:
https://lists.jboss.org/mailman/listinfo/rules-users

[tsurdilovic]

I am guessing you are using a wrong MVEL version. Check your MVEL jar to make sure it is the correct one for Drools version you have.