[rules-dev] Drools trunk build issue - any info?

Wed Jan 13 23:05:08 EST 2010

I have been trying to synchronize and get my patch to work with the latest
version of Drools 5.1.0.SNAPSHOT code from
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk without success.

I tried the same snapshot build on another of the Tohu projects that didn't
use the new patched code and got the same error.

I had tried to build the whole JBoss snapshot from the root pom. Had
encountered several issues due to dependency issues. What would you advise
in these circumstances? I can roll back my local version to a version that
works with the patched code (but then this will not work with the next
version containing the current changes as it is).

I have included the error below....(may give someone more info about the
issue).

org.drools.runtime.rule.ConsequenceException: rule: LoyaltyCard

        at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handl
eException(DefaultConsequenceExceptionHandler.java:23)
        at org.drools.common.DefaultAgenda.fireActivation
(DefaultAgenda.java:981
)
        at org.drools.common.DefaultAgenda.fireNextItem
(DefaultAgenda.java:918)
        at org.drools.common.DefaultAgenda.fireAllRules
(DefaultAgenda.java:1130)

        at org.drools.common.AbstractWorkingMemory.fireAllRules
(AbstractWorkingM
emory.java:739)
        at org.drools.common.AbstractWorkingMemory.fireAllRules
(AbstractWorkingM
emory.java:705)
        at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules
(StatefulKno
wledgeSessionImpl.java:200)
        at org.drools.command.runtime.rule.FireAllRulesCommand.execute
(FireAllRu
lesCommand.java:56)
        at org.drools.command.runtime.rule.FireAllRulesCommand.execute
(FireAllRu
lesCommand.java:13)
        at org.drools.runtime.impl.BatchExecutionImpl.execute
(BatchExecutionImpl
.java:35)
        at org.drools.runtime.impl.BatchExecutionImpl.execute
(BatchExecutionImpl
.java:15)
        at org.drools.impl.StatefulKnowledgeSessionImpl.execute
(StatefulKnowledg
eSessionImpl.java:826)
        at org.drools.impl.StatefulKnowledgeSessionImpl.execute
(StatefulKnowledg
eSessionImpl.java:811)
        at org.drools.runtime.pipeline.impl.ExecutorStage.execute
(ExecutorStage.
java:29)
        at org.drools.runtime.pipeline.impl.ExecutorStage.receive
(ExecutorStage.
java:19)
        at org.drools.runtime.pipeline.impl.BaseEmitter.emit
(BaseEmitter.java:31
)
        at
org.drools.runtime.pipeline.impl.XStreamFromXmlTransformer.receive(XS
treamFromXmlTransformer.java:47)
        at org.drools.runtime.pipeline.impl.BaseEmitter.emit
(BaseEmitter.java:31
)
        at
org.drools.runtime.pipeline.impl.StatefulKnowledgeSessionPipelineImpl
.insert(StatefulKnowledgeSessionPipelineImpl.java:40)
        at drools.rex.SessionExecutor$.execute(SessionExecutor.scala:26)
        at drools.rex.Server.execute(Server.scala:32)
        at drools.rex.StatefulServer.doPost(Server.scala:75)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle
(ServletHolder.java:487
)
        at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:3
62)
        at org.mortbay.jetty.security.SecurityHandler.handle
(SecurityHandler.jav
a:216)
        at org.mortbay.jetty.servlet.SessionHandler.handle
(SessionHandler.java:1
81)
        at org.mortbay.jetty.handler.ContextHandler.handle
(ContextHandler.java:7
26)
        at org.mortbay.jetty.webapp.WebAppContext.handle
(WebAppContext.java:405)

        at org.mortbay.jetty.handler.ContextHandlerCollection.handle
(ContextHand
lerCollection.java:206)
        at org.mortbay.jetty.handler.HandlerCollection.handle
(HandlerCollection.
java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:1
52)
        at org.mortbay.jetty.Server.handle(Server.java:324)
        at org.mortbay.jetty.HttpConnection.handleRequest
(HttpConnection.java:50
5)
        at org.mortbay.jetty.HttpConnection$RequestHandler.content
(HttpConnectio
n.java:843)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
        at org.mortbay.io.nio.SelectChannelEndPoint.run
(SelectChannelEndPoint.ja
va:395)
        at org.mortbay.thread.QueuedThreadPool$PoolThread.run
(QueuedThreadPool.j
ava:488)
Caused by: [Error: drools.insertLogical(questionnaire): null]
[Near : {... Unknown ....}]
             ^
[Line: 1, Column: 0]
        at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGet
Chain(ReflectiveAccessorOptimizer.java:373)
        at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAc
cessor(ReflectiveAccessorOptimizer.java:138)
        at org.mvel2.ast.ASTNode.getReducedValueAccelerated
(ASTNode.java:133)
        at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
        at org.mvel2.compiler.CompiledExpression.getValue
(CompiledExpression.jav
a:104)
        at org.mvel2.MVEL.executeExpression(MVEL.java:995)
        at org.drools.base.mvel.MVELConsequence.evaluate
(MVELConsequence.java:87
)
        at org.drools.common.DefaultAgenda.fireActivation
(DefaultAgenda.java:972
)
        ... 39 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(
ReflectiveAccessorOptimizer.java:930)
        at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGet
Chain(ReflectiveAccessorOptimizer.java:315)
        ... 46 more
Caused by: java.lang.NullPointerException
        at org.drools.reteoo.CollectNode.modifyTuple(CollectNode.java:354)
        at org.drools.reteoo.CollectNode.assertObject(CollectNode.java:259)
        at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject
(Singl
eObjectSinkAdapter.java:42)
        at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147)
        at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(
CompositeObjectSinkAdapter.java:360)
        at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(Co
mpositeObjectSinkAdapter.java:337)
        at org.drools.reteoo.ObjectTypeNode.assertObject
(ObjectTypeNode.java:184
)
        at org.drools.reteoo.EntryPointNode.assertObject
(EntryPointNode.java:147
)
        at org.drools.common.AbstractWorkingMemory.insert
(AbstractWorkingMemory.
java:1135)
        at org.drools.common.AbstractWorkingMemory.insert
(AbstractWorkingMemory.
java:1086)
        at org.drools.base.DefaultKnowledgeHelper.insertLogical
(DefaultKnowledge
Helper.java:129)
        at org.drools.base.DefaultKnowledgeHelper.insertLogical
(DefaultKnowledge
Helper.java:123)
        ... 52 more

Regards,

Peter Sellars
Senior Developer
Solnet Solutions Limited
Level 7, Brookfields House
19 Victoria Street, Auckland 1010, New Zealand
PO Box 6619, Auckland 1141, New Zealand
DDI: +64 9 977 5808  Mobile: +64 21 809 009
Main: +64 9 977 5800 Fax: +64 9 977 5801

www.solnetsolutions.co.nz
A Solnet Group Company

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