[jboss-jira] [JBoss JIRA] Closed: (JBRULES-2202) Generated types should be Serializable
Edson Tirelli (JIRA)
jira-events at lists.jboss.org
Fri Jul 10 12:25:29 EDT 2009
[ https://jira.jboss.org/jira/browse/JBRULES-2202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edson Tirelli closed JBRULES-2202.
----------------------------------
Resolution: Done
Fixed. Thanks for reporting.
> Generated types should be Serializable
> --------------------------------------
>
> Key: JBRULES-2202
> URL: https://jira.jboss.org/jira/browse/JBRULES-2202
> Project: JBoss Drools
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: drools-compiler, drools-core
> Affects Versions: 5.0.0.FINAL, 5.0.1.FINAL
> Reporter: Edson Tirelli
> Assignee: Edson Tirelli
> Fix For: 5.1.0.M1
>
>
> Hello,
> Recently I've been working with Drools version 5.0.1 to set up an event processor. While doing so I have come
> across difficulties with the accumulate function, in that it will always throw a ClassCastException
> when inserting events that are declared within my drl file. To illustrate this I've set up an example which is
> shown below. I've search Google and the mailing list for several hours, but the only way past this problem
> appears to be that I will have to declare a class externally and make sure it implements Serializable. Does
> anyone has suggestions for another approach? Secondly, I would have assumed that since Drools was
> compiling these internally declared classes, that Serializable would have been implemented automatically. So
> is this a result of the generated class not implementing Serializable, or have I missed something in my rules
> file? Thanks.
> The important part of my drl file is:
> declare TestEvent
> @role( event )
> @expires(10s)
> id : String
> end
> #This rule works fine when 'Accumulate Count' is commented out, and is used to make
> #sure that the event inserting has worked.
> rule "Is It There"
> when
> TestEvent() from entry-point "test"
> then
> System.out.println("Found a TestEvent.");
> end
> #This rule throws a ClassCastException when a TestEvent is inserted.
> rule "Accumulate Count"
> when
> $n : Number() from accumulate($t : TestEvent() from entry-point "test", count($t))
> then
> System.out.println("Found " + $n + " events.");
> end
> The unit test does this:
> FactType testEventType = session.getKnowledgeBase().getFactType("com.drools.test", "TestEvent");
> for(int i = 0; i < 10; i++){
> Object testEvent = testEventType.newInstance();
> testEventType.set(testEvent, "id", "id");
> WorkingMemoryEntryPoint mainStream = session.getWorkingMemoryEntryPoint("test");
> mainStream.insert(event);
> session.fireAllRules();
> }
> The exception I receive is:
> org.drools.RuntimeDroolsException: java.lang.ClassCastException: com.drools.test.TestEvent cannot be cast to java.io.Serializable
> at org.drools.rule.Accumulate.accumulate(Accumulate.java:172)
> at org.drools.reteoo.AccumulateNode.modifyTuple(AccumulateNode.java:424)
> at org.drools.reteoo.AccumulateNode.assertObject(AccumulateNode.java:284)
> at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> at org.drools.reteoo.PropagationQueuingNode$AssertAction.execute(PropagationQueuingNode.java:326)
> at org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuingNode.java:221)
> at org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(PropagationQueuingNode.java:394)
> at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1486)
> at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:158)
> at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:122)
> at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:80)
> at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:28)
> at com.drools.test.MyUnitTest.testEvents(EvaluationTest.java:66)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.springframework.test.context.junit4.SpringTestMethod.invoke(SpringTestMethod.java:160)
> at org.springframework.test.context.junit4.SpringMethodRoadie.runTestMethod(SpringMethodRoadie.java:233)
> at org.springframework.test.context.junit4.SpringMethodRoadie$RunBeforesThenTestThenAfters.run(SpringMethodRoadie.java:333)
> at org.springframework.test.context.junit4.SpringMethodRoadie.runWithRepetitions(SpringMethodRoadie.java:217)
> at org.springframework.test.context.junit4.SpringMethodRoadie.runTest(SpringMethodRoadie.java:197)
> at org.springframework.test.context.junit4.SpringMethodRoadie.run(SpringMethodRoadie.java:143)
> at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:160)
> at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
> at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
> at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
> at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
> at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
> at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:97)
> at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
> 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.ClassCastException: com.drools.test.TestEvent cannot be cast to java.io.Serializable
> at org.drools.base.accumulators.JavaAccumulatorFunctionExecutor.accumulate(JavaAccumulatorFunctionExecutor.java:110)
> at org.drools.rule.Accumulate.accumulate(Accumulate.java:164)
> ... 36 more
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