Drools Salience and no-loop
by gboro54
So I have setup my drools execution as follows:
1.A single thread is pooling Orders from the db and insert them into X
number of sessions(10) running on separate threads(fireUntilHalt()).
2. I have a set up rules which need to execute first to allow other rules
to fire so I have rules such as:
rule "main 1"
salience 1000
no-loop true
when
<some_conditions>
then
<modify order info>(update is invoked)
end
3. There is another set of rules which then check the Order for these
preconditions along with others
rule "sub 1"
salience 100
no-loop true
when
<some_conditions>
<main 1 consequences present>
then
<modify order info>(no update invoked as other rules in the
session don't care)
end
4. I then have a single rule which has a low salience and should be last
rule to fire in the activation which retracts the Order and hands it to a
service for post processsing
rule "END"
salience -100
no-loop true
when
ord:Order
then
retract(ord);
invokeService(ord);
end
The problem I am having is that my END rule is being invoked on certain
Orders in working memory before the other activation have taken any affect(I
have verified this by send a replicated order 1000 times and each time a
large majority his the service before anything was modified on the order).
Am I missing something?
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12 years, 1 month
Re: [rules-users] Using 'in' operator to find objects inside a list
by FrankVhh
As documented:
Use 'memberOf' instead of 'in'.
Regards,
Frank
purna wrote
>
> drl file looks like this..
> global ArrayList<Long> accountNumberBlackList
> .
> .
> .
> rule blackListToCheck
> when
> "$transaction : Transaction(accountTo.number in
> (accountNumberBlackList))"
>
> then
> $transaction.setStatus(Transaction.Status.DENIED);
> //.. do something else?
> end
>
> I want to use 'in' operator to find numbers that are stored in global
> variable accountNumberBlackList.
> Is the above syntax(in double quotes) correct?
> is there any alternative to look inside a list?
>
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12 years, 1 month
(no subject)
by Christabelle Galea
g.christabelle(a)gmail.com
12 years, 1 month
java.lang.ArrayIndexOutOfBoundsException thrown in mvel2's compiler when running drools5.3 final.
by Miles Wen
hi all,
the exception below is usually thrown when the system is busy(usually 9-10
am everyday);
The rules runs perfectly when unit test or any other time when the system
is not very busy(like 22:00 - 4:00 every day);
Our system processes 13000000 pieces of data each day, with
4-5 java.lang.ArrayIndexOutOfBoundsException thrown on average.It's not
very often but doubtful.
The logs are shown below:
2012-03-07 10:10:33,683 [] ERROR ruleservice.RuleServiceImpl - Error
occurred while invoking business filter!
java.lang.reflect.InvocationTargetException
at
com.alibaba.china.avatar.offer.rulematch.OfferMatchFilter$$FastClassByCGLIB$$18f6f037.invoke(<generated>)
at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53)
at
com.alibaba.china.ruleservice.RuleServiceImpl.bindParamAndInvoke(RuleServiceImpl.java:264)
at
com.alibaba.china.ruleservice.RuleServiceImpl.match(RuleServiceImpl.java:82)
at sun.reflect.GeneratedMethodAccessor248.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at
com.alibaba.china.avatar.interceptor.KeyDataLoggingAfterThrowingInterceptor.invoke(KeyDataLoggingAfterThrowingInterceptor.java:24)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
com.alibaba.dragoon.patrol.spring.DragoonMethodInterceptor.invoke(DragoonMethodInterceptor.java:106)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy16.match(Unknown Source)
at
com.alibaba.china.avatar.offer.decode.OfferMessageAction.run(OfferMessageAction.java:39)
at
com.alibaba.china.rialto.core.module.DefaultActionModule.doWork(DefaultActionModule.java:375)
at
com.alibaba.china.rialto.core.module.DefaultActionModule.runModule(DefaultActionModule.java:252)
at
com.alibaba.china.rialto.core.module.ModuleRunner.run(ModuleRunner.java:31)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.drools.RuntimeDroolsException: Exception executing predicate
Helper.containsAny(offerSubject, ((Set)colMap.get("_set_212")))
at
org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:298)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:130)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:458)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:386)
at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:215)
at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:244)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:330)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:291)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:886)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:845)
at
org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:255)
at
com.alibaba.china.ruleservice.session.impl.drools5.TransientDrools5Session.insertFact(TransientDrools5Session.java:100)
at
com.alibaba.china.avatar.offer.rulematch.OfferMatchFilter.doFilter(OfferMatchFilter.java:57)
... 23 more
Caused by: [Error: unexpected end of statement]
[Near : {... Helper.containsAny(offerSubject,
((Set)colMap.get("_set_212"))) ....}]
^
[Line: 1, Column: 39]
at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:1215)
at
org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:128)
at org.mvel2.util.ParseTools.subCompileExpression(ParseTools.java:2090)
at org.mvel2.ast.Substatement.<init>(Substatement.java:37)
at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:1062)
at
org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:128)
at org.mvel2.util.ParseTools.subCompileExpression(ParseTools.java:2079)
at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:953)
at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:375)
at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:141)
at org.mvel2.ast.ASTNode.optimize(ASTNode.java:157)
at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:113)
at org.mvel2.MVELRuntime.execute(MVELRuntime.java:87)
at
org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:122)
at
org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:115)
at org.mvel2.MVEL.executeExpression(MVEL.java:930)
at
org.drools.base.mvel.MVELPredicateExpression.evaluate(MVELPredicateExpression.java:100)
at
org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:291)
... 35 more
Caused by: java.lang.ArrayIndexOutOfBoundsException
I looks like there's some issue in mvel2's parser.The problem occurs when
dynamic compiling mvel2 code.
And every ArrayIndexOutOfBoundsException is thrown around here:
'Helper.containsAny(offerSubject, ((Set)colMap.get("_set_212")))' .This is
a custom static function call which implements come sort of operation not
supported by drools5.
Is this a bug about mvel2?Or any one encountered this problem also? How
could I avoid it?
Thnaks!
--
Regards.
Miles. Wen
12 years, 1 month
load precompiled rule/ruleflow file in 5.3.0
by womuji
We are upgrading from Drools 5.1 to 5.3.0.Final, and running into issues with
loading precompiled rule/ruleflow files.
Previously, we precompiled our drl files using ant task
"org.drools.contrib.DroolsCompilerAntTask", e.g. rule1.drl to
rule1.drl.rules. We did the similar thing for ruleflow files, i.e.
precompiled all of our rf files to a single ruleflow.flow file. In our java
code, in 5.1, we load them as following:
DroolsObjectInputStream ruleFlowStream = null;
try
{
ruleFlowStream = new DroolsObjectInputStream(
new BufferedInputStream(
resourceLoader.getResource(
"classpath:ruleflow.flow"
).getInputStream()
)
);
org.drools.rule.Package ruleFlow =
(org.drools.rule.Package)ruleFlowStream.readObject();
ruleBase.addPackage(ruleFlow);
}
...
Same thing for the rule files.
My question is:
How do we load the precompiled file in 5.3 (we switch to the KnowledgeBase
API ) so that we can save the compiling time when loading?
Thanks.
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12 years, 1 month
how to invoke java method with variable arguments from drl file
by womuji
We are upgrading Drools from 5.1 to 5.3, and running into some issue when
invoking a Java method with
String variable arguments:
methodA(String... params)
how do we invoke this in a drl file? We used to call it in 5.1 as:
objA.methodA({"string1"});
and it works fine. Now in 5.3, it complains that
"unable to resolve method using strict-mode:
objA.methodA([Ljava.lang.Object;)]"
If we tried objA.methodA(new String[]{"string1"});
it complains that
"unable to resolve method using strict-mode:
objA.methodA([Ljava.lang.String;)]"
It passes the rule loading if we change to :
objA.methodA("string1");
but when actually running the rule, we are getting error saying
" unable to resolve method methodA(java.lang.String)"
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12 years, 1 month
Raising event signal from work item handler
by Swindells, Thomas
Within a work item, if you need to signal an event how would you do it?
>From a rules task you have access to the kcontext but generically this isn't available.
Thanks,
Thomas
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12 years, 1 month
Drools 5.3 partitioned rule base
by gboro54
I am trying to run a partitioned rule base as we have a need to evaluate a
large number of facts. We have around 160 rules which are coordinated using
jBPM rule-flow groups(intermingled with some lightweight business logic).
The business logic in the process executed quickly(80ms for 10,000 facts)
but the rules take sometime to evaluate(thus why I thought a partitioned
rule base would work). However when I try to run it I get the stack trace
below. Do I need to do something to the session as well?
java.lang.IllegalStateException: Error launching test
com.nasdaq.backoffice.billing.process.PhlxCoreProcessTest public void
com.nasdaq.backoffice.billing.process.PhlxCoreProcessTest.testPhlxCoreProcess()
at
org.jboss.arquillian.protocol.servlet.ServletMethodExecutor.invoke(ServletMethodExecutor.java:122)
at
org.jboss.arquillian.container.test.impl.execution.RemoteTestExecuter.execute(RemoteTestExecuter.java:120)
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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:90)
at
org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
at
org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:134)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:114)
at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)
at
org.jboss.arquillian.container.test.impl.execution.ClientTestExecuter.execute(ClientTestExecuter.java:57)
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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:90)
at
org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
at
org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
at
org.jboss.arquillian.container.test.impl.client.ContainerEventController.createContext(ContainerEventController.java:142)
at
org.jboss.arquillian.container.test.impl.client.ContainerEventController.createTestContext(ContainerEventController.java:129)
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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:90)
at
org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
at
org.jboss.arquillian.test.impl.TestContextHandler.createTestContext(TestContextHandler.java:89)
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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:90)
at
org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
at
org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:75)
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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:90)
at
org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
at
org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:60)
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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:90)
at
org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:134)
at
org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.test(EventTestRunnerAdaptor.java:111)
at org.jboss.arquillian.junit.Arquillian$6.evaluate(Arquillian.java:263)
at org.jboss.arquillian.junit.Arquillian$4.evaluate(Arquillian.java:226)
at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:314)
at org.jboss.arquillian.junit.Arquillian.access$100(Arquillian.java:46)
at org.jboss.arquillian.junit.Arquillian$5.evaluate(Arquillian.java:240)
at
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:185)
at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:314)
at org.jboss.arquillian.junit.Arquillian.access$100(Arquillian.java:46)
at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:199)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:147)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.io.WriteAbortedException: writing aborted;
java.io.NotSerializableException:
org.drools.impl.StatefulKnowledgeSessionImpl
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at
org.jboss.arquillian.test.spi.ExceptionProxy.readExternal(ExceptionProxy.java:177)
at java.io.ObjectInputStream.readExternalData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at
org.jboss.arquillian.protocol.servlet.ServletMethodExecutor.execute(ServletMethodExecutor.java:214)
at
org.jboss.arquillian.protocol.servlet.ServletMethodExecutor.executeWithRetry(ServletMethodExecutor.java:140)
at
org.jboss.arquillian.protocol.servlet.ServletMethodExecutor.invoke(ServletMethodExecutor.java:118)
... 75 more
Caused by: java.io.NotSerializableException:
org.drools.impl.StatefulKnowledgeSessionImpl
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at
org.jboss.arquillian.test.spi.ExceptionProxy.writeExternal(ExceptionProxy.java:227)
at java.io.ObjectOutputStream.writeExternalData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at
org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.writeObject(ServletTestRunner.java:229)
at
org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.executeTest(ServletTestRunner.java:163)
at
org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.execute(ServletTestRunner.java:126)
at
org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.doGet(ServletTestRunner.java:90)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
at
org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at
org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)
at
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
at java.lang.Thread.run(Unknown Source)
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12 years, 1 month
