[jboss-jira] [JBoss JIRA] Closed: (JBRULES-1157) threads using one ruleset throws exception

[Mark Proctor (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-1157?page=all ]

Mark Proctor closed JBRULES-1157.
---------------------------------

    Fix Version/s: 4.0.2
       Resolution: Done

Noticed this method is not thread safe:
org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode
So now it syncrhoniseson rulebase.pkgs, which is what other dynamic rule addition stuff does. Let me know if this doesn't fix the problem.


> threads using one ruleset throws exception
> ------------------------------------------
>
>                 Key: JBRULES-1157
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-1157
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 4.0.1
>         Environment: Windows XP, Eclipse 3.2
>            Reporter: Markus Fromme
>         Assigned To: Mark Proctor
>            Priority: Critical
>             Fix For: 4.0.2
>
>
> one ruleset for two threads using their own statefulsession and data results in this error:
> Exception in thread "Thread-1" java.lang.ArrayIndexOutOfBoundsException: 17
> 	at org.drools.util.AbstractHashTable$HashTableIterator.next(AbstractHashTable.java:257)
> 	at org.drools.util.AbstractHashTable$HashTableIterator.next(AbstractHashTable.java:262)
> 	at org.drools.util.ObjectHashSet.toArray(ObjectHashSet.java:130)
> 	at org.drools.common.AbstractRuleBase.getWorkingMemories(AbstractRuleBase.java:605)
> 	at org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:157)
> 	at org.drools.reteoo.Rete$ClassObjectTypeConf.<init>(Rete.java:418)
> 	at org.drools.reteoo.Rete.assertObject(Rete.java:153)
> 	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:196)
> 	at org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute(ReteooWorkingMemory.java:164)
> 	at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1260)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:864)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:826)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:627)
> 	at eu.cewe.drools.Client.run(Client.java:22)
> Exception in thread "Thread-0" java.lang.NullPointerException
> 	at org.drools.reteoo.ObjectTypeNode.attach(ObjectTypeNode.java:220)
> 	at org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:158)
> 	at org.drools.reteoo.Rete$ClassObjectTypeConf.<init>(Rete.java:418)
> 	at org.drools.reteoo.Rete.assertObject(Rete.java:153)
> 	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:196)
> 	at org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute(ReteooWorkingMemory.java:164)
> 	at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1260)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:864)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:826)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:627)
> 	at eu.cewe.drools.Client.run(Client.java:22)

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