org.drools.osgi.api.Activator.stop() - java.lang.IllegalStateException: The service has been unregistered
by tkleszczynski
Hello,
I noticed problem/bug with stopping bundle org.drools.api (knowledge-api).
Problem occurs when OSGi framework stops this bundle. Method
org.drools.osgi.api.Activator.stop() firstly invokes
this.serviceRegistry.unregister() and then this.registryTracker.close().
Unfortunately DroolsServiceTracker uses reference to service which has been
unregistered.
I think this problem can be fixed by moving
this.serviceRegistry.unregister(); to end of
org.drools.osgi.api.Activator.stop() method, after code which stops service
trackers. Then service will be still registered during service trackers
closing. Maybe would be worth to create JIRA issue and fix it in next
version.
Drools version: 5.4.0.Final
Equinox version: 3.7.0
stacktrace from OSGi console:
unregistering : org.drools.io.impl.ResourceFactoryServiceImpl@1d686c1 :
interface org.drools.io.ResourceFactoryService
org.osgi.framework.BundleException: Exception in
org.drools.osgi.api.Activator.stop() of bundle org.drools.api.
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:791)
at
org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.stop(AbstractBundle.java:464)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.stop(AbstractBundle.java:456)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._stop(FrameworkCommandProvider.java:361)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute(FrameworkCommandInterpreter.java:209)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(FrameworkConsole.java:155)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.runConsole(FrameworkConsole.java:140)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConsole.java:104)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IllegalStateException: The service has been
unregistered
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getReferenceImpl(ServiceRegistrationImpl.java:277)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getReference(ServiceRegistrationImpl.java:266)
at
org.drools.osgi.api.Activator$DroolsServiceTracker.removedService(Activator.java:115)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1006)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1)
at org.osgi.util.tracker.AbstractTracked.untrack(AbstractTracked.java:352)
at org.osgi.util.tracker.ServiceTracker.close(ServiceTracker.java:412)
at org.drools.osgi.api.Activator.stop(Activator.java:67)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
... 13 more
Nested Exception:
java.lang.IllegalStateException: The service has been unregistered
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getReferenceImpl(ServiceRegistrationImpl.java:277)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getReference(ServiceRegistrationImpl.java:266)
at
org.drools.osgi.api.Activator$DroolsServiceTracker.removedService(Activator.java:115)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1006)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1)
at org.osgi.util.tracker.AbstractTracked.untrack(AbstractTracked.java:352)
at org.osgi.util.tracker.ServiceTracker.close(ServiceTracker.java:412)
at org.drools.osgi.api.Activator.stop(Activator.java:67)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
at
org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.stop(AbstractBundle.java:464)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.stop(AbstractBundle.java:456)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._stop(FrameworkCommandProvider.java:361)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute(FrameworkCommandInterpreter.java:209)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(FrameworkConsole.java:155)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.runConsole(FrameworkConsole.java:140)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConsole.java:104)
at java.lang.Thread.run(Thread.java:662)
Nested Exception:
java.lang.IllegalStateException: The service has been unregistered
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getReferenceImpl(ServiceRegistrationImpl.java:277)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getReference(ServiceRegistrationImpl.java:266)
at
org.drools.osgi.api.Activator$DroolsServiceTracker.removedService(Activator.java:115)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1006)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1)
at org.osgi.util.tracker.AbstractTracked.untrack(AbstractTracked.java:352)
at org.osgi.util.tracker.ServiceTracker.close(ServiceTracker.java:412)
at org.drools.osgi.api.Activator.stop(Activator.java:67)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
at
org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.stop(AbstractBundle.java:464)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.stop(AbstractBundle.java:456)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._stop(FrameworkCommandProvider.java:361)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute(FrameworkCommandInterpreter.java:209)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(FrameworkConsole.java:155)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.runConsole(FrameworkConsole.java:140)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConsole.java:104)
at java.lang.Thread.run(Thread.java:662)
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14 years
persisted StatefulKnowledgeSession failed to maintain the length of Sliding window?
by henrychen
Hi, all:
I'm a newbie to Drools.
I'm trying to restore stateful knowledge session using
JPAKnowledgeService after restarting server.
In my rules I use Drools Fusion's Sliding Length Window to processing
events. Below is a sample:
package com.sample
import com.sample.Event;
import java.util.List;
declare Event
@role(event)
end
rule "test"
when
$list : List() from collect(Event() over window: length(2))
then
System.out.println("list size:" + $list.size());
end
And I have done what should be done according to the manual reference.
When I running my test
case below:
@Test
public void test_persistedsession() {
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
loadDRL(kbase);
Environment env = KnowledgeBaseFactory.newEnvironment();
env.set( EnvironmentName.ENTITY_MANAGER_FACTORY,
Persistence.createEntityManagerFactory( "org.drools.persistence.jpa" ) );
env.set( EnvironmentName.TRANSACTION_MANAGER,
TransactionManagerServices.getTransactionManager());
//create a persisted statefulknowledgesession
StatefulKnowledgeSession ksession =
JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
ksession.insert(new Event());
ksession.fireAllRules();
ksession.insert(new Event());
ksession.fireAllRules();
//reload the persisted session
ksession =
JPAKnowledgeService.loadStatefulKnowledgeSession(ksession.getId(), kbase,
null, env);
ksession.insert(new Event());
ksession.fireAllRules();
ksession.insert(new Event());
ksession.fireAllRules();
}
Then I found that the result is:
Hibernate: insert into SessionInfo (id, lastModificationDate,
rulesByteArray, startDate, OPTLOCK) values (null, ?, ?, ?, ?)
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
*list size:1*
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
*list size:2*
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
*list size:3*
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
*list size:4*
Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?,
startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
As I have declared that the length of window is 2, how can the size of list
increase to 3, 4 and more?
I am using the 5.2.0 final. May be I have missed something, please help me.
Any help will be appreciated.
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14 years
Continuous Planning values for task planning
by Josef Bajada
Hi,
I am new to Drools and Drools Planner, so apologies if I am asking anything
obvious.
My objective is to implement a simple (for now) planner which schedules
tasks according to 2 main criteria:
- Their duration (in seconds)
- Their dependencies on other tasks (e.g. Hard Constraint that Task B has
to start between 180 and 200 seconds after Task A finishes).
Since there are gaps between dependent tasks as part of the hard
constraints other tasks can be fitted in between dependent tasks.
So the Solver needs to find the optimal start time for each task that
satisfies the hard constraints, and in the shortest total timeline possible
to complete all tasks (soft constraint).
The main problem I am finding is that this start time, which is essentially
the planning variable is a continuous variable.
Chapter 4 of the Drools documentation mentions very briefly (Section
4.3.4.1) that planning variables can be continuous, but there does not
seem to be any more details about how to achieve this.
Even if the planning variable was discrete (say bins of 5 second
intervals), there is no upper bound as such.
How is it best to handle such planning variables in Drools Planner?
thanks,
josef
14 years
ClasscastException in drools ant task
by sk_mutyala
Hi All,
I am trying to build a sample drools project using ant and getting the below
error. I am using "drools-distribution-5.4.0.Final" release jars in my
project. Unable to get this issue resolved as not sure what really went
wrong.
RuleBaseTask failed: Unable to load dialect
'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel:org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration'
at
org.drools.contrib.DroolsCompilerAntTask.execute(DroolsCompilerAntTask.java:159)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
at org.apache.tools.ant.Project.executeTarget(Project.java:1307)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at
org.eclipse.ant.internal.launching.remote.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:33)
at org.apache.tools.ant.Project.executeTargets(Project.java:1191)
at
org.eclipse.ant.internal.launching.remote.InternalAntRunner.run(InternalAntRunner.java:423)
at
org.eclipse.ant.internal.launching.remote.InternalAntRunner.main(InternalAntRunner.java:137)
Caused by: org.drools.RuntimeDroolsException: Unable to load dialect
'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel:org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration'
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:313)
at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:298)
at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:187)
at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:140)
at
org.drools.contrib.DroolsCompilerAntTask.getPackageBuilder(DroolsCompilerAntTask.java:556)
at
org.drools.contrib.DroolsCompilerAntTask.createWithPackageBuilder(DroolsCompilerAntTask.java:266)
at
org.drools.contrib.DroolsCompilerAntTask.execute(DroolsCompilerAntTask.java:156)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at
org.eclipse.ant.internal.launching.remote.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
... 2 more
Caused by: java.lang.ClassCastException:
org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:308)
at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:298)
at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:189)
at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:142)
at
org.drools.contrib.DroolsCompilerAntTask.getPackageBuilder(DroolsCompilerAntTask.java:558)
at
org.drools.contrib.DroolsCompilerAntTask.createWithPackageBuilder(DroolsCompilerAntTask.java:266)
at
org.drools.contrib.DroolsCompilerAntTask.execute(DroolsCompilerAntTask.java:156)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
at org.apache.tools.ant.Project.executeTarget(Project.java:1307)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at
org.eclipse.ant.internal.launching.remote.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:33)
at org.apache.tools.ant.Project.executeTargets(Project.java:1191)
... 2 more
Below is the list of jars added to my classpath,
--------------------------------------------
antlr-runtime.jar
drools-ant-5.4.0.Final.jar
drools-compiler-5.4.0.Final.jar
drools-core-5.4.0.Final.jar
drools-decisiontables-5.4.0.Final.jar
drools-jsr94-5.4.0.Final.jar
drools-persistence-jpa-5.4.0.Final.jar
drools-templates-5.4.0.Final.jar
drools-verifier-5.4.0.Final.jar
droolsjbpm-ide-common-5.4.0.Final.jar
jbpm-bpmn2.jar
jbpm-flow-builder.jar
jbpm-flow.jar
jsr94.jar
junit.jar
jxl.jar
knowledge-api.jar
knowledge-internal-api.jar
mvel2.jar
org.eclipse.jdt.core_3.6.1.v_A68_R36x.jar
xmlpull.jar
xpp3_min.jar
xstream.jar
build.xml
---------
<project name="DroolsProto" default="dist" basedir=".">
<property name="build.src" location="src"/>
<property name="build.target" location="target"/>
<property name="build.dist" location="dist"/>
<path id="build.lib.path">
<fileset dir="${build.src}/lib">
<include name="**/*.jar"/>
</fileset>
</path>
<taskdef name="droolscompiler"
classname="org.drools.contrib.DroolsCompilerAntTask">
<classpath refid="build.lib.path"/>
</taskdef>
<target name="clean">
<delete dir="${build.target}"/>
<delete dir="${build.dist}"/>
</target>
<target name="init">
<tstamp/>
<mkdir dir="${build.target}"/>
<mkdir dir="${build.dist}"/>
<record name="build.log" loglevel="verbose" append="false"/>
</target>
<target name="compile" depends="init">
<mkdir dir="${build.target}/classes"/>
<javac srcdir="${build.src}/main/java" destdir="${build.target}/classes">
<classpath refid="build.lib.path"/>
<include name="**/*.java"/>
</javac>
</target>
<target name="compile-rules">
<property name="pathelements" refid="build.lib.path"/>
<droolscompiler srcDir="${build.src}/main/rules"
toFile="${build.target}/classes/drl.pkg"
classpathref="build.lib.path">
<include name="*.drl" />
</droolscompiler>
</target>
<target name="bundle-resources" depends="compile-rules">
<copy todir="${build.target}/classes">
<fileset dir="${build.src}/main/resources"/>
</copy>
</target>
<target name="dist" depends="compile,bundle-resources"/>
</project>
Thanks in advance,
Suresh
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14 years
Issue with Drools Spring Integration documentation (v5.4)?
by dunnlow
Isn't Example 2.3 (below) incorrect in the 5.4 Drools Spring integration doc?
It looks like there are two problems. First, a typo "configurations" should
be "configuration" (without the 's'). Secondly, according to the .xsd it
looks to me like batch and configuration elements must be mutually exclusive
(they are defined as a choice under ksession). Am I misreading that?
(I ask because I'd like to actually have a script AND configuration section
in my ksession spring definition, but...)
xsd:
======== Example 2.3 ========
<drools:ksession id="ksession1" type="stateless"
name="stateless1" kbase="kbase1"/>
<drools:ksession id="ksession2" type="stateful" kbase="kbase1"/>
<drools:ksession id="ksession3" type="stateful" kbase="kbase2>
<drools:batch>
<drools:insert-object ref="person" />
<drools:set-global identifier="list1">
<bean class="java.util.ArrayList" />
</drools:set-global>
<drools:startProcess process-id="start fire">
</drools:batch>
<drools:configurations>
<drools:keep-reference enabled="false" />
<drools:clock-type type="PSEUDO" />
</drools:configurations>
</drools:ksession>
===========================
I'm looking here:
http://docs.jboss.org/drools/release/5.4.0.Final/droolsjbpm-integration-d...
Thanks,
-J
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14 years
What is uberfire?
by Anton Hughes
Hi all
I saw a mention on the drools blog about Uberfire - but couldnt find much
information about it.
Can anyone please tell more about this project?
Thanks
14 years
Very Strange Bug: Rule fails to fire
by Wolfgang Laun
Sorry for the duplication, but this very strange bug sure needs a subject.
On 8 September 2012 13:07, Wolfgang Laun <wolfgang.laun(a)gmail.com> wrote:
> Scenario:
> 5.3.0, STREAM, fireUntilHalt() run in separate thread, AlertEvent events
> inserted every 1 or two seconds.
>
> The following rules should retract ClusterLink facts referencing the
> AlertCluster that is
> selected by the DissolveCluster fact. As soon as there is no such
> ClusterLink any
> more, the AlertCluster and the DissolveCluster facts are to be retracted:
>
> rule "remove link to dissolved AlertCluster"
> agenda-group "dissolve"
> auto-focus true
> when
> DissolveCluster( $cluster: cluster )
> AlertCluster( this == $cluster )
> $clusterLink: ClusterLink( $alertEvent: alertEvent, alertCluster ==
> $cluster )
> AlertEvent( this == $alertEvent ) from entry-point "Cluster Stream"
> then
> System.out.println( "Dissolving...!" );
> retract( $clusterLink );
> end
>
> rule "clean up after dissolving AlertCluster"
> agenda-group "dissolve"
> when
> $dissolveCluster: DissolveCluster( $cluster: cluster )
> $alertCluster: AlertCluster( this == $cluster )
> not ClusterLink( alertCluster == $cluster )
> then
> System.out.println( "Dissolve finished." );
> retract( $alertCluster );
> retract( $dissolveCluster );
> end
>
> Does anybody see anything wrong with these rules?
>
> The problem is that, after all ClusterLinks have been removed, the final
> clean-up rule
> is not executed.
>
> Luckily, the last CE in the first rule isn't necessary. If
> "AlertEvent(...) from ..."
> is removed, both rules work correctly.
>
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
14 years
(no subject)
by Wolfgang Laun
Scenario:
5.3.0, STREAM, fireUntilHalt() run in separate thread, AlertEvent events
inserted every 1 or two seconds.
The following rules should retract ClusterLink facts referencing the
AlertCluster that is
selected by the DissolveCluster fact. As soon as there is no such
ClusterLink any
more, the AlertCluster and the DissolveCluster facts are to be retracted:
rule "remove link to dissolved AlertCluster"
agenda-group "dissolve"
auto-focus true
when
DissolveCluster( $cluster: cluster )
AlertCluster( this == $cluster )
$clusterLink: ClusterLink( $alertEvent: alertEvent, alertCluster ==
$cluster )
AlertEvent( this == $alertEvent ) from entry-point "Cluster Stream"
then
System.out.println( "Dissolving...!" );
retract( $clusterLink );
end
rule "clean up after dissolving AlertCluster"
agenda-group "dissolve"
when
$dissolveCluster: DissolveCluster( $cluster: cluster )
$alertCluster: AlertCluster( this == $cluster )
not ClusterLink( alertCluster == $cluster )
then
System.out.println( "Dissolve finished." );
retract( $alertCluster );
retract( $dissolveCluster );
end
Does anybody see anything wrong with these rules?
The problem is that, after all ClusterLinks have been removed, the final
clean-up rule
is not executed.
Luckily, the last CE in the first rule isn't necessary. If "AlertEvent(...)
from ..."
is removed, both rules work correctly.
14 years
