[jboss-jira] [JBoss JIRA] (DROOLS-740) NoSuchMethodError at runtime while evaluating String and Long

[Toshiya Kobayashi (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050798#comment-13050798 ] 

Toshiya Kobayashi commented on DROOLS-740:
------------------------------------------

Toshiya>

Out of curiosity, why did you remove 20-times-loop from the test case? Is there any trick to force JIT compilation immediately?

Mario>

The trick I use to test and fix JIT compilation issues is setting this flag to true: https://github.com/droolsjbpm/drools/blob/master/drools-core/src/main/java/org/drools/core/rule/constraint/MvelConstraint.java#L62

This forces immediate JITting of constraints. When I fix a jit-related bug (and from time to time) I then ran the whole test suite with that flag set to true to check that jit compilation is working with all known use cases.

> NoSuchMethodError at runtime while evaluating String and Long
> -------------------------------------------------------------
>
>                 Key: DROOLS-740
>                 URL: https://issues.jboss.org/browse/DROOLS-740
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.2.0.Final
>            Reporter: Toshiya Kobayashi
>            Assignee: Mario Fusco
>             Fix For: 6.3.0.Beta1
>
>
> When you write a LHS like this,
> {noformat}
> Person( name == "Elizabeth" + new Long(2L) )
> {noformat}
> you will face NoSuchMethodError after 20 times evaluation.
> {noformat}
> testJittedConstraintStringAndLong(org.drools.compiler.integrationtests.Misc2Test)  Time elapsed: 1.216 sec  <<< ERROR!
> java.lang.NoSuchMethodError: java.lang.StringBuilder.append(Ljava/lang/Long;)Ljava/lang/StringBuilder;
> 	at ConditionEvaluator80a8832efb1646d488df2cde72963f02.evaluate(Unknown Source)
> 	at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:230)
> 	at org.drools.core.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:187)
> 	at org.drools.core.reteoo.AlphaNode.assertObject(AlphaNode.java:141)
> 	at org.drools.core.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:60)
> 	at org.drools.core.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:294)
> 	at org.drools.core.reteoo.EntryPointNode.assertObject(EntryPointNode.java:255)
> 	at org.drools.core.common.NamedEntryPoint.insert(NamedEntryPoint.java:277)
> 	at org.drools.core.common.NamedEntryPoint.insert(NamedEntryPoint.java:237)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:1495)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:1450)
> 	at org.drools.compiler.integrationtests.Misc2Test.testJittedConstraintStringAndLong(Misc2Test.java:7253)
> {noformat}



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