[jboss-jira] [JBoss JIRA] Updated: (JBRULES-2481) Unable to reference globals in object constructors on RHS of rule

[ https://jira.jboss.org/jira/browse/JBRULES-2481?page=com.atlassian.jira.p... ] Chris DeLashmutt updated JBRULES-2481: -------------------------------------- Description: After migrating to Drools 5 from 4.0.7, it seems that you can't reference globals in object constructors on the RHS of a rule. Here is my DRL: package test.rules #list any import classes here. import test.domain.Field; #declare any global variables here global test.service.CalendarManager calendarManager; dialect "mvel" rule "FieldRuleTest.todayField" when then new Field("todayField",calendarManager.getToday()) end After reading this DRL with PackageBuilder, creating a StatefulSession from the resulting rulebase, setting the global, and then executing fireAllRules, I get the following exception: org.drools.runtime.rule.ConsequenceException: [Error: unable to access property (null parent): calendarManager] [Near : {... Unknown ....}] ^ [Line: 1, Column: 0] at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:980) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:917) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1126) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:697) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:663) at test.MvelBindingProblemTest.mvelBindingTestFailure(MvelBindingProblemTest.java:40) 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:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: [Error: unable to access property (null parent): calendarManager] [Near : {... Unknown ....}] ^ [Line: 1, Column: 0] at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:860) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:584) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:312) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:138) at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:133) at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:41) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileConstructor(ReflectiveAccessorOptimizer.java:1090) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeObjectCreation(ReflectiveAccessorOptimizer.java:1047) at org.mvel2.ast.NewObjectNode.getReducedValueAccelerated(NewObjectNode.java:158) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:104) at org.mvel2.MVEL.executeExpression(MVEL.java:995) at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:87) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:971) ... 27 more Attached is a project with a failing test case for this issue. If I simply add a silly reference to the global to the DRL as follows, everything works: rule "FieldRuleTest.todayField" when then stupidLocalVariable = calendarManager new Field("todayField",calendarManager.getToday()) end was: After migrating to Drools 5, it seems that you can't reference globals in object constructors on the RHS of a rule. Here is my DRL: package test.rules #list any import classes here. import test.domain.Field; #declare any global variables here global test.service.CalendarManager calendarManager; dialect "mvel" rule "FieldRuleTest.todayField" when then new Field("todayField",calendarManager.getToday()) end After reading this DRL with PackageBuilder, creating a StatefulSession from the resulting rulebase, setting the global, and then executing fireAllRules, I get the following exception: org.drools.runtime.rule.ConsequenceException: [Error: unable to access property (null parent): calendarManager] [Near : {... Unknown ....}] ^ [Line: 1, Column: 0] at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:980) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:917) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1126) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:697) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:663) at test.MvelBindingProblemTest.mvelBindingTestFailure(MvelBindingProblemTest.java:40) 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:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: [Error: unable to access property (null parent): calendarManager] [Near : {... Unknown ....}] ^ [Line: 1, Column: 0] at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:860) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:584) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:312) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:138) at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:133) at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:41) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileConstructor(ReflectiveAccessorOptimizer.java:1090) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeObjectCreation(ReflectiveAccessorOptimizer.java:1047) at org.mvel2.ast.NewObjectNode.getReducedValueAccelerated(NewObjectNode.java:158) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:104) at org.mvel2.MVEL.executeExpression(MVEL.java:995) at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:87) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:971) ... 27 more Attached is a project with a failing test case for this issue. If I simply add a silly reference to the global to the DRL as follows, everything works: rule "FieldRuleTest.todayField" when then stupidLocalVariable = calendarManager new Field("todayField",calendarManager.getToday()) end -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira