Re: [rules-users] Concurrency problem in PackageClassLoader
I also was getting this error. I brought out package building logic to execute
once, and KnowledgeSession related logic to repeat the required number of times.
Seems there required some delay in preparing rules related classes into one
package during iteration and loading the same. Above step was working fine for
me.
Pseudo code:
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
// this will parse and compile in one step
// get the compiled packages (which are serializable)
CollectionKnowledgePackage pkgs = null;
// add the packages to a knowledgebase (deploy the knowledge packages).
KnowledgeBase kbase = null;
StatefulKnowledgeSession ksession = null;
// constructor to be called once
public RuleEngine (byte[] rules) {
kbuilder.add(ResourceFactory.newByteArrayResource(rules),ResourceType.DRL);
// Check the builder for errors
if (kbuilder.hasErrors()) {
System.out.println(kbuilder.getErrors().toString());
throw new RuntimeException(Unable to compile drl.);
}
pkgs = kbuilder.getKnowledgePackages();
// add the packages to a knowledgebase (deploy the knowledge
packages).
kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(pkgs);
}
// this method will be called required number of times
public void fire(Object obj) {
ksession = kbase.newStatefulKnowledgeSession();
ksession.addEventListener(new DebugAgendaEventListener());
ksession.addEventListener(new DebugWorkingMemoryEventListener());
// setup the audit logging
//KnowledgeRuntimeLogger logger =
KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, log/drools.log);
ksession.insert(obj);
ksession.fireAllRules();
//logger.close();
ksession.dispose();
}
Check this out.
Thanks Regards
Santhosh Pallerla
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of nicolas
Sent: Thursday, September 29, 2011 8:09 AM
To: rules-users@lists.jboss.org
Subject: [rules-users] Concurrency problem in PackageClassLoader
Hi,
We are using a single (Drools 5.1.1) Stateless Sessions for the parallel
processing of thousands of facts.
From time to time we experienced the following error :
org.drools.runtime.rule.ConsequenceException: rule: Priorite - Groupe:
TMK2612G01, P10
at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:927)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:856)
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1071)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:785)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:751)
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218)
at
acme.srv.ept.service.impl.traitement.MoteurTraitementDemandes.traiterDemande(MoteurTraitementDemandes.java:121)
(...)
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$AbstractMapIterator.checkConcurrentMod(Unknown
Source)
at java.util.HashMap$AbstractMapIterator.makeNext(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at java.util.HashMap.analyzeMap(Unknown Source)
at java.util.HashMap.rehash(Unknown Source)
at java.util.HashMap.rehash(Unknown Source)
at java.util.HashMap.putImpl(Unknown Source)
at java.util.HashMap.put(Unknown Source)
at
org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:503)
at java.lang.ClassLoader.loadClass(ClassLoader.java:609)
at
acme.srv.ept.regle.Rule_Priorite___Groupe__TMK2612G01__P10_0DefaultConsequenceInvoker.evaluate(Rule_Priorite___Groupe__TMK2612G01__P10_0DefaultConsequenceInvoker.java:29)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:917)
... 49 more
We get the same error when we used a pool of Stateless Sessions (serial access)
based on the same KnowledgeBase for the processing.
Thanks,
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[rules-users] Guvnor and Axis2
Hi, I am using an own web service (Axis2; tomcat 6) to interact with Guvnor. All drools related jars (drools*, mvel*, knowledge-api) are contained in the lib folder of service's aar file. Via knowledge-api the service interacts with the guvnor repository. Unfortunately this doesn't work. At runtime a ClassNotFoundException has been thrown. A look into details revealed that the ClassLoader havn't loaded all jars containing in webservice's lib folder. Has anybody an idea what's going wrong. I'm not sure if this is an issue of drools, the axis2 engine or the tomcat engine. Thanks, Mario ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] [rules-dev] java.lang.NullPointerException while testing
First of all, I' moving this to drools-users list.
The problem seems to be that the application is not finding the change-set
file. Where is the ChangeSet(12).xml file placed? Is it reachable at the
first level of the classpath? Try to debug and see if the resource is in the
classpath. Try with this first:
this.getClass().getClassLoader().getResource(ChangeSet(12).xml);
Another solution could be to use a URLResource pointing to package's
change-set in Guvnor.
Best Regards,
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Thu, Sep 29, 2011 at 9:15 AM, shubhranshu shubhranshu.sw...@gmail.comwrote:
Hello everybody,
I am new to drools. We have to integrate drools in our application. After
lot of searching a found something very helpful. Here is what I did.
I created a new package say test.
I uploaded a new jar file which contains my model.
I created a new category say banking.
Then I created a rule under the banking category in test package.
Finally I create a new snapshot for deployment.
Then I get the changeset.xml
change-set xmlns='http://drools.org/drools-5.0/change-set'
xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
xs:schemaLocation='http://drools.org/drools-5.0/change-set
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd
'
add
resource
source='
http://localhost:8080/guvnor-5.2.0.Final-tomcat-6.0/org.drools.guvnor.Guvnor/package/Banking/Test
'
type='PKG' /
/add
/change-set
Below is the code to test
package com.test;
import junit.framework.TestCase;
import org.drools.KnowledgeBase;
import org.drools.agent.KnowledgeAgent;
import org.drools.agent.KnowledgeAgentConfiguration;
import org.drools.agent.KnowledgeAgentFactory;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
public class Test extends TestCase{
public void testDroolsWithGuvnor() throws Exception {
KnowledgeBase knowledgeBase = createKnowledgeBase();
StatefulKnowledgeSession session =
knowledgeBase.newStatefulKnowledgeSession();
try {
Person person = new Person();
person.setAge(20);
session.insert(person);
assertTrue(session.getFactCount() == 1);
session.fireAllRules();
assertTrue(session.getFactCount() == 2);
}
finally {
session.dispose();
}
}
public static KnowledgeBase createKnowledgeBase(){
KnowledgeAgentConfiguration kaconf =
KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
kaconf.setProperty( drools.agent.scanDirectories, false
);
KnowledgeAgent kagent =
KnowledgeAgentFactory.newKnowledgeAgent( test
agent, kaconf );
kagent.applyChangeSet(
ResourceFactory.newClassPathResource(ChangeSet(12).xml));
return kagent.getKnowledgeBase();
}
}
But when i try to test it using junit i get the following exception.
java.lang.NullPointerException
at
org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:223)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:189)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:174)
at com.test.Test.createKnowledgeBase(Test.java:34)
at com.test.Test.testDroolsWithGuvnor(Test.java:15)
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 junit.framework.TestCase.runTest(TestCase.java:168)
at junit.framework.TestCase.runBare(TestCase.java:134)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)
at junit.framework.TestSuite.runTest(TestSuite.java:243)
at junit.framework.TestSuite.run(TestSuite.java:238)
at
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
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
Re: [rules-users] DROOLS PLANNER - getting started
Do you now if org.drools.eclipse.feature - 5.1.1 is compatible with drools-planner 5.2? Thanks :) -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3378637.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] DROOLS PLANNER - getting started - drools-eclipse-plugin
I 'd recommend using org.drools.eclipse.feature - 5.2 with drools planner 5.2 because drools-planner 5.2 uses drools-core 5.2 and org.drools.eclipse.feature - 5.2 uses the same exact version. But 5.1.1 probably mostly works too to edit the score drl files. Op 29-09-11 10:16, vik schreef: Do you now if org.drools.eclipse.feature - 5.1.1 is compatible with drools-planner 5.2? Thanks :) -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3378637.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- With kind regards, Geoffrey De Smet ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] DROOLS PLANNER - getting started - drools-eclipse-plugin
Do you know if I have to install JBoss Drools Guvnor to work with Drools Planner to write rules? -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3378730.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] DROOLS PLANNER - getting started - drools-eclipse-plugin
Not needed, it's optional. Op 29-09-11 11:05, vik schreef: Do you know if I have to install JBoss Drools Guvnor to work with Drools Planner to write rules? -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3378730.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- With kind regards, Geoffrey De Smet ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] DROOLS PLANNER - getting started - drools-eclipse-plugin
I apologize for bothering you so frequently :)... I still have a problem... I imported examples\source into eclipse and each time a run it the following error shows up The working directory should be set to drools-planner-examples. at org.drools.planner.examples.common.business.SolutionBusiness.updateDataDirs(SolutionBusiness.java:101) -- View this message in context: http://drools.46999.n3.nabble.com/DROOLS-PLANNER-getting-started-tp3030567p3378876.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Not able to call parameterizied Java method in LHS
I am facing one more issue with calling a method in lhs of the rule ..
When I call a method as mentioned below ('getValue' is the method in class
'customObject' and 'numberofObjects' is method in class 'AnotherObject') ;
the drl file has problems in saving in eclipse.
The error says like 'Multiple Markers at this line'
***
rule A
when
$B : customObject()
$C : AnotherObject()
eval($C.numberofObjects($B.getValue(Database)) 10)
then
rhs of the rule
end
Please help me in this regard..
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Re: [rules-users] Regression with Drools 5.3.0-CR1
JBRULES-2995 is fixed now, except for a corner case when using .class
literals with fully qualified class names. This will be fixed in MVEL for
5.3 final release.
This works fine now:
Primitives( classAttr == (java.lang.String.class),
eval(classAttr.equals( java.lang.String.class ) ),
classAttr == String.class )
Also, some improvements on the free form expression support:
$p1 : Person( age 2*10, 10 age )
$p2 : Person( age 2*$p1.age )
Please let me know if you find any other cases where free form
expressions are raising errors.
Thank you,
Edson
2011/9/26 Edson Tirelli ed.tire...@gmail.com
Ok, this is fixed:
https://issues.jboss.org/browse/JBRULES-3224
I will check JBRULES-2995 now.
Edson
2011/9/26 Edson Tirelli ed.tire...@gmail.com
Thanks Wolfgang. That is a different issue related to how MVEL deals
with class literals. I will check what's the status on it anyway.
Edson
2011/9/26 Wolfgang Laun wolfgang.l...@gmail.com
Note that https://issues.jboss.org/browse/JBRULES-2995 reported against
5.2.0.CR1 and still open might be related.
-W
2011/9/26 Edson Tirelli ed.tire...@gmail.com
Thomas,
Thanks for reporting. I will look into it.
Did you open a JIRA yet? Let me know or I will do it otherwise.
Edson
2011/9/26 Swindells, Thomas tswinde...@nds.com
I’ve just tried upgrading from Drools 5.3.0-CR1 from the beta and
I’ve hit a regression.
** **
JBoss seems to have been down for most of today so I haven’t been able
to raise a Jira for it.
** **
In our model we have Facts which contain fields of java.lang.class, we
then have a rule which checks that they aren’t null.
Eg
Fact { ClassObject classField}
** **
Rule “xyz”
When
Fact(classField != null)
Then
…
End
** **
This is giving the following exception
** **
Caused by: java.lang.ClassCastException:
org.drools.base.field.ObjectFieldImpl cannot be cast to
org.drools.base.field.ClassFieldImpl
at
org.drools.base.evaluators.EqualityEvaluatorsDefinition$ClassEqualEvaluator.evaluate(EqualityEvaluatorsDefinition.java:1772)
at
org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:87)
at
org.drools.rule.LiteralConstraint.isAllowed(LiteralConstraint.java:109)
at
org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:130)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:451)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:369)
at
org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:134)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:451)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:379)
at
org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:204)
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:882)
at
org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:180)
... 149 more
** **
Wrapping the classField != null within an eval appears to be a work
around.
** **
This is in the suspect method:
*public* *boolean* evaluate(InternalWorkingMemory
workingMemory,
*final* InternalReadAccessor
extractor,
*final* Object object1, *final*FieldValue
object2) {
Object value1 = extractor.getValue( workingMemory, object1
);
Object value2 = object2.getValue();
*if* ( value2 == *null* ) {
ClassFieldImpl classField = (ClassFieldImpl) object2;*
***
value2 = classField.resolve( workingMemory );
}
*return* *comparator*.equals( value1, value2 );
}
** **
I think the if statement just needs an instanceof check as well or some
other way to track the fact that null may be a valid value to be comparing
with!
** **
** **
Thomas
--
**
This message is confidential and intended only for the
Re: [rules-users] Concurrency problem in PackageClassLoader
Thank you Santhosh, Actually we already have the package building logic out of the session execution stuff. We will try to create directly a Stateful Session for each call as you did. For now we are using our Stateless Session as a factory for the Stateful (@see StatelessKnowledgeSessionImpl.execute(Object)). I'll update the post with the results. As a quick fix, we patched the JavaDialectRuntimeData class to synchronize the loadClass(..) method. We didn't get any other concurrency problem (yet). Regards, -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-Concurrency-problem-in-PackageClassLoader-tp3378045p3380185.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Expiry of events not occurring for sliding window
I've done a bit more looking -- based upon what I've read and what I've seen
via testing, you don't need to have a temporal constraint on a CE for it to
be expired, provided there is an explicit one declared. Is that correct?
That said...
Ok, maybe there is a silly mistake here, but I'm seeing the following expire
and retract objects (note no temporal constraint)
imports
declare CheeseTime
@role(event)
@expires(10s)
@timestamp(timeStamp)
end
rule Print Objects
when
$m:Object( )
from entry-point stat-stream
then
logger.warn( CheeseTime-- );
logger.warn( --+$m);
end
(note the Object() ) but not this
(same declarations except replacing the rule)
rule Print CheeseTime
when
$m:CheeseTime()
from entry-point stat-stream
then
logger.warn( Object-- );
logger.warn( --+$m);
end
For CheeseTime
public class CheeseTime {
private String type;
private long cost;
private Date timeStamp;
:
}
Clearly, I'm missing something...
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[rules-users] Package snapshots in Guvnor have wrong list of rules
Using Guvnor 5.1.1, I build a package using a custom selector that filters on a rules' status; then take a snapshot. In the Package Snapshot tab selecting Business rule assets from the navigation tree shows all the rules from the package, not the filtered subset. But I know the selector worked because the binary version of the snapshot downloaded via the Deployment URL includes only the filtered subset. Why are the assets viewable in the tree not in sync with those in the deployed binary? -- View this message in context: http://drools.46999.n3.nabble.com/Package-snapshots-in-Guvnor-have-wrong-list-of-rules-tp3380570p3380570.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor Repository Report
Thank you Jilu, this is very helpfull. From: jliu [via Drools] ml-node+s46999n3378073...@n3.nabble.com To: sanjuk72 sank1...@yahoo.com Sent: Wednesday, September 28, 2011 10:51 PM Subject: Re: [rules-users] Guvnor Repository Report On 2011/9/29 2:07, Vincent Legendre wrote: Yes you can do all that (but don't know about getting history infos). A old post from Jervis Liu linked to more info on REST API here http://blog.athico.com/2011/03/atompub-interface-for-guvnor.html and http://community.jboss.org/wiki/AtomPubinterfaceforGuvnor The latest REST doc can be found from here: https://hudson.jboss.org/jenkins/job/guvnor/lastSuccessfulBuild/artifact/guvnor-docs/target/docbook/publish/en-US/html_single/index.html#d0e1856 Both package and asset version history info are supported. Cheers, Jervis But you may start by using the existing report. If you go under Guvnor and see the package page, in the URL listing part, you will find a documentation link, which generates a PDF report with all your assets (don't know for history). Le 28/09/2011 19:08, Michael Anstis a écrit : Have a look at the REST API documented in the user guide. I suspect you'll be able to get a list of packages, and for each a list of assets. On 28 September 2011 17:59, sanjuk72 [hidden email] wrote: I have a following need: We are maintaining all rules in GUVNOR. We need to run a weekly report displaying all the Rules and there related information like change history. Qs: How can I access the GUVNOR repository to get this information. If anyone can please help. Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-Repository-Report-tp3376667p3376667.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list [hidden email] https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list [hidden email] https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list [hidden email] https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list [hidden email] https://lists.jboss.org/mailman/listinfo/rules-users If you reply to this email, your message will be added to the discussion below: http://drools.46999.n3.nabble.com/Guvnor-Repository-Report-tp3376667p3378073.html To unsubscribe from Guvnor Repository Report, click here. -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-Repository-Report-tp3376667p3380871.html Sent from the Drools: User forum mailing list archive at Nabble.com.___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools 5 PseudoClock with StatelessKnowledgeSession
Hi, I wanted to know if you found any solution to this. I have a same issue, I need to run the legagcy rules and for that need to change the date that rules have using the date-effective and date-expiry. I was thinking of using this functionality, but it seems not available with Stateless Sessions. Please let me know thanks -- View this message in context: http://drools.46999.n3.nabble.com/Drools-5-PseudoClock-with-StatelessKnowledgeSession-tp62084p3380930.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools 5 PseudoClock with StatelessKnowledgeSession
Look at the interval timer test here from line 254 onwards, and the
subsequent cron tests:
https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/integrationtests/TimerAndCalendarTest.java#L254
On 13/10/2009 00:32, Ben Scott wrote:
Note: This e-mail is subject to the disclaimer contained at the bottom
of this message.
I'm wanting to use the date-effective and date-expiry rule metadata to
add date specific rule variants within my app. To test these I was
planning on using the pseudo clock and setting the expected date prior
to executing the rules within a StatelessKnowledgeSession. I can set
the clock easily enough, but can't understand why the
getSessionClock() method is missing? It's on the
StatefulKnowledgeSession, but not on the Stateless.
I'm initialising the session like this:
SessionConfiguration sessionConfiguration = new SessionConfiguration();
sessionConfiguration.setClockType( ClockType.PSEUDO_CLOCK );
StatelessKnowledgeSession session =
_testKnowledgeBase.newStatelessKnowledgeSession(sessionConfiguration);
The only thing I could think of to set the pseudo clock was to write a
command something like:
private static class SetPseudoClockCommand implements
org.drools.process.command.CommandBoolean {
public Boolean execute(ReteooWorkingMemory session) {
// Set the clock to the current date
pseudoSessionClock.advanceTime(new DateTime().getMillis(),
TimeUnit.MILLISECONDS);
// Add a couple of days
pseudoSessionClock.advanceTime(2, TimeUnit.DAYS);
return true;
}
}
But this doesn't appear to take any effect whilst rules are running.
Is there another way to get programmatic access to the session clock,
or some better way of changing the underlying date prior to rule
execution?
Ben.
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