[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2282) Using "extends" with a $var in the parent causes Internal Error
Edson Tirelli (JIRA)
jira-events at lists.jboss.org
Tue Sep 22 11:15:49 EDT 2009
[ https://jira.jboss.org/jira/browse/JBRULES-2282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12486849#action_12486849 ]
Edson Tirelli commented on JBRULES-2282:
----------------------------------------
Committed revision 29434.
> Using "extends" with a $var in the parent causes Internal Error
> ---------------------------------------------------------------
>
> Key: JBRULES-2282
> URL: https://jira.jboss.org/jira/browse/JBRULES-2282
> Project: Drools
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: drools-compiler
> Affects Versions: 5.0.1.FINAL
> Environment: Win XP SP3, Drools 5.0.1
> Reporter: Jeremy Ary
> Assignee: Edson Tirelli
> Fix For: 5.1.0.M1
>
>
> TEST CASE (DRL):
> package org.drools.test;
> import org.drools.Cheese;
> import org.drools.Cheesery
> global java.util.List list;
> global Cheesery cheesery;
> rule "test A"
>
> when
> $a: Cheese ( type == "stilton" )
> then
> list.add( new String ("rule A") );
> end
> rule "test B" extends "test A"
> when
> $b: Cheese ( type == "cheddar" )
> $c: Cheese ( type == "brie" )
> then
> $a.setType( $c.getType() );
> //list.add( $a.getType() );
> list.add( new String ("rule B") );
> end
> TEST CASE (JAVA):
> public void testExtends() throws Exception {
>
> final PackageBuilder builder = new PackageBuilder();
> builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "extend_rule_test.drl" ) ) );
> final Package pkg = builder.getPackage();
> RuleBase ruleBase = getRuleBase();
> ruleBase.addPackage( pkg );
> ruleBase = SerializationHelper.serializeObject(ruleBase);
> final WorkingMemory workingMemory = ruleBase.newStatefulSession();
> final List list = new ArrayList();
> workingMemory.setGlobal( "list",
> list );
> final Cheese stilton = new Cheese( "stilton", 5 );
> final Cheese cheddar = new Cheese( "cheddar", 7 );
> final Cheese brie = new Cheese( "brie", 5 );
>
> final FactHandle stiltonHandle = workingMemory.insert( stilton );
> final FactHandle cheddarHandle = workingMemory.insert( cheddar );
> final FactHandle brieHandle = workingMemory.insert( brie );
>
> workingMemory.fireAllRules();
>
> System.out.println(list);
>
> assertTrue( list.size() > 0 );
> }
> Full stack trace:
> org.drools.rule.InvalidRulePackage: Internal Error : Unable to find declaration in list while generating the consequence invoker : [Rule name='test B']
> at org.drools.rule.Package.checkValidity(Package.java:477)
> at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:435)
> at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:389)
> at org.drools.integrationtests.ExtendsTest.testExtends(ExtendsTest.java:33)
> 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 junit.framework.TestCase.runTest(TestCase.java:154)
> at junit.framework.TestCase.runBare(TestCase.java:127)
> at junit.framework.TestResult$1.protect(TestResult.java:106)
> at junit.framework.TestResult.runProtected(TestResult.java:124)
> at junit.framework.TestResult.run(TestResult.java:109)
> at junit.framework.TestCase.run(TestCase.java:118)
> at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
> at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
> We debugged the test and traced the error back to a call to checkValidity() in AbstractRuleBase.java around like 435. If we comment out this call, we can continue with the debug and see that the three variables appear to be properly placed on the child rule object, but not before the validation check. However, running this way leads to a separate error and stack trace.
> org.drools.runtime.rule.ConsequenceException: java.lang.ArrayIndexOutOfBoundsException: -1
> at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23)
> at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:943)
> at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885)
> at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086)
> at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660)
> at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:627)
> at org.drools.integrationtests.ExtendsTest.testExtends(ExtendsTest.java:49)
> 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 junit.framework.TestCase.runTest(TestCase.java:154)
> at junit.framework.TestCase.runBare(TestCase.java:127)
> at junit.framework.TestResult$1.protect(TestResult.java:106)
> at junit.framework.TestResult.runProtected(TestResult.java:124)
> at junit.framework.TestResult.run(TestResult.java:109)
> at junit.framework.TestCase.run(TestCase.java:118)
> at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
> at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
> Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
> at org.drools.test.Rule_test_B_0ConsequenceInvoker.evaluate(Rule_test_B_0ConsequenceInvoker.java:20)
> at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:934)
> ... 21 more
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