[jboss-jira] [JBoss JIRA] (DROOLS-538) Unable to resolve class error , drools 5.5 in concurrent execution. JSR94Support and Spring

[Davide Sottara (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12981698#comment-12981698 ] 

Davide Sottara edited comment on DROOLS-538 at 7/2/14 6:45 PM:
---------------------------------------------------------------

Clone the Git repository on your dev machine
{code}
git clone https://github.com/droolsjbpm/drools.git
{code}
then switch to the 5.6 branch
{code}
git checkout 5.6.x
{code}
You can then use "mvn install" from the root directory to compile the jars


was (Author: dsotty):
Go to https://github.com/droolsjbpm/drools, select the 5.6 branch and clone it on your dev machine.
You can then use "mvn install" from the root directory to compile the jars

> Unable to resolve class error , drools 5.5 in concurrent execution. JSR94Support and Spring 
> --------------------------------------------------------------------------------------------
>
>                 Key: DROOLS-538
>                 URL: https://issues.jboss.org/browse/DROOLS-538
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 5.5.0.Final
>         Environment: Linux Red Hat , Enterprise, JDK 1.6, Drools 5.5.Final 
>            Reporter: Maruthi Shanmugam
>            Assignee: Mark Proctor
>            Priority: Blocker
>
> We use Drools 5.5 and drool implementation is done through Spring JSR94Support API>
> The Rule engine is called in concurrent mode,
> i.e , JSR94Support.executeStateless(name,list) is executed through multiple threads.
> And when the rules are executed  we randomly get the following exception
> org.drools.RuntimeDroolsException: Unable to resolve class 'someclass(this is sample)here actual class is printed>'
>         at org.drools.base.ClassFieldAccessorCache.getClass(ClassFieldAccessorCache.java:126)
>         at org.drools.base.ClassFieldAccessorCache.getClassObjectType(ClassFieldAccessorCache.java:48)
>         at org.drools.reteoo.ClassObjectTypeConf.<init>(ClassObjectTypeConf.java:83)
>         at org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:71)
>         at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:159)
>         at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903)
>         at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847)
>         at org.drools.reteoo.ReteooStatelessSession.executeWithResults(ReteooStatelessSession.java:273)
> The rules are registered every 15 minutes through RuleAdministrator.registerRuleExecutionset ,
> so whenever we refresh the rules and the subsequent thread even after the registration is completed, fails with the above message. This happens only when the rules are invoked concurrently. 



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