rules file character encoding and spring
by Joachim Van der Auwera
I have a rules description like this:
<drools:kbase id="bodKBase">
<drools:resources>
<drools:resource type="DRL"
source="classpath:be/vlaanderen/awv/dc/bod/rule/Dienstbevel.drl"/>
<drools:resource type="DRL"
source="classpath:be/vlaanderen/awv/dc/bod/rule/Kostenberekening.drl"/>
</drools:resources>
</drools:kbase>
How can I specify the character encoding for this?
It is working fine on linux (everything is UTF-8), but gives a problem on
Windows machine where it complains about the character set.
Thanks for the help.
Kind regards,
Joachim
13 years, 3 months
problem when upgrading to 5.4.0.Final, got UnsupportedOperationException on an update call
by Michal Bali
Hi all,
I am upgrading an application from 5.3.0.Final to 5.4.0.Final and I am
getting the following exception:
Exception executing consequence for rule "ruleThatFails" in
indexingproblem.remove.me.anditworks:
java.lang.UnsupportedOperationException
at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1212)
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1446)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
at com.mycompany.app.IndexingProblemMain.main(IndexingProblemMain.java:36)
Caused by: java.lang.UnsupportedOperationException
at org.drools.reteoo.BaseLeftTuple.getPrevious(BaseLeftTuple.java:480)
at org.drools.core.util.index.LeftTupleList.remove(LeftTupleList.java:114)
at org.drools.core.util.index.LeftTupleList.removeAdd(LeftTupleList.java:68)
at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:310)
at
org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:304)
at
org.drools.reteoo.LeftTupleSource.modifyLeftTuple(LeftTupleSource.java:278)
at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:437)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateModifyLeftTuple(SingleLeftTupleSinkAdapter.java:205)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateModifyObject(SingleLeftTupleSinkAdapter.java:235)
at
org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68)
at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421)
at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
at
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
at
indexingproblem.remove.me.anditworks.Rule_ruleThatFails_b159773c7b1a41a2a93044d2816b96ca.defaultConsequence(Rule_ruleThatFails_b159773c7b1a41a2a93044d2816b96ca.java:9)
at
indexingproblem.remove.me.anditworks.Rule_ruleThatFails_b159773c7b1a41a2a93044d2816b96caDefaultConsequenceInvokerGenerated.evaluate(Unknown
Source)
at
indexingproblem.remove.me.anditworks.Rule_ruleThatFails_b159773c7b1a41a2a93044d2816b96caDefaultConsequenceInvoker.evaluate(Unknown
Source)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1277)
... 6 more
I have tried to create a minimal test case that recreates this issue, here
it is:
package indexingproblem.remove.me.anditworks;
declare Criteria
processed : boolean
end
declare CheeseCriteria extends Criteria
end
rule setUp
salience 10000
when
then
insert(new CheeseCriteria());
end
rule aaa
when
CheeseCriteria( )
then
end
rule bbb
when
CheeseCriteria( )
then
end
rule ccc
when
CheeseCriteria( )
then
end
rule eeeFalse
when
Criteria( processed == false )
then
end
declare Filter
end
rule fffTrue
when
Criteria( processed == true )
Filter( )
then
end
rule ruleThatFails
when
$criteria : Criteria( processed == false )
then
modify($criteria) {
setProcessed(true)
}
end
I've tried to run it on 5.5.0-SNAPSHOT, but I got the same result. Note
that if you change the rule package to be "package indexingproblem" the
exception is not thrown. The code for building the KnowledgeBase is
standard, I haven't used any additional options. No fact is inserted only
one fireAllRules call.
Please let me know if I should create a new JIRA ticket for this or if I am
doing something wrong.
Thanking you in advance.
Best regards,
Michal
13 years, 3 months
Issue with From Clause - Class Cast Error
by tosmun
Hi All,
I am having a very strange issue with my knowledge base... I have the
following Rule:
...
rule "root_host"
no-loop true
ruleflow-group 'initialize-appliance-definitions'
when
$app:ApplianceType
(
type == ApplianceTypeIdentifier.APPLIANCE_ROOT
);
not( ApplianceTypeObject() from $app.getObjectTypes());
then
//Do something
end;
...
And the ApplianceType class is defined as:
...
public class ApplianceType
{
private ApplianceTypeIdentifier type;
private List<ApplianceTypeObject> objectTypes;
public ApplianceType(ApplianceTypeIdentifier type,
List<ApplianceTypeObject> initialObjectTypes)
{
this.type = type;
if(initialObjectTypes == null)
this.objectTypes = new ArrayList<ApplianceTypeObject>();
else
this.objectTypes = initialObjectTypes;
}
public ApplianceType(ApplianceTypeIdentifier type)
{
this(type, null);
}
public ApplianceTypeIdentifier getType()
{
return type;
}
public List<ApplianceTypeObject> getObjectTypes() {
return objectTypes;
}
}
When attempting to fireAllRules() I receive the following error:
...
Caused by: java.lang.ClassCastException: org.drools.reteoo.FromNode
incompatible with org.drools.reteoo.BetaNode
at org.drools.reteoo.ReteooBuilder.resetMasks(ReteooBuilder.java:303)
at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:267)
at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:459)
at
org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:1107)
at
org.drools.common.AbstractRuleBase.mergePackage(AbstractRuleBase.java:851)
at
org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:610)
at org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:472)
at
org.drools.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:150)
at
com.q1labs.frameworks.drools.DroolsEngine.getKnowledgeBase(DroolsEngine.java:139)
at com.q1labs.frameworks.drools.DroolsEngine.onInit(DroolsEngine.java:50)
at
com.q1labs.frameworks.naming.FrameworksNaming.initializeNewComponent(FrameworksNaming.java:951)
... 3 more
Any thoughts? I have been using from clauses just like this throughout my
project, and have had no issues with it to this point (even those which did
not use generics).
--
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Sent from the Drools: User forum mailing list archive at Nabble.com.
13 years, 3 months
Classcast exception in Drools ant task
by Mutyala Suresh kumar
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
13 years, 3 months
planning difficulty problem
by Ricardo
For example , I have 10 doctors planning for 3 hospitals in three shifts,
each hospital take maximum limit of 3 doctors only, In this case I have one
remaining doctor unassigned. My doubt is how planner handle this data? will
it be rejected or consider in other cycle or overwrite the planner solution?
please advise...
thanks,
-----
with kind regards,
--
View this message in context: http://drools.46999.n3.nabble.com/planning-difficulty-problem-tp4019857.html
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13 years, 3 months
Persistence in fireUntilHalt() loop
by Alberto R. Galdo
Hi,
We're running an application that uses Drools + JBPM 5 + Drools
integration our set-up can be seen as:
Some rule fires and creates a JBPM process ( a fact gets inserted into
drools using "kcontext.getKnowledgeRuntime().startProcess("testProcess")"
). We have a problem with the persistence of this processes. Persistence is
implemented with JPA and JTA. Our application runs with fireUntilHalt() and
when a process is launched from the consequence of any of the rules the
persistence of the process fails. If the application runs with
fireAllRules(), the persistence works like a charm.
The error shown is as follow:
Exception in thread "Thread-5" Exception executing consequence for rule
"Run Process" in com.sample: java.lang.NullPointerException
at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1101)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029)
at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1229)
at
org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:754)
at
org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:730)
at
org.drools.command.runtime.rule.FireUntilHaltCommand$1.run(FireUntilHaltCommand.java:50)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException
at
org.jbpm.persistence.processinstance.JPAProcessInstanceManager.addProcessInstance(JPAProcessInstanceManager.java:44)
at
org.jbpm.process.instance.AbstractProcessInstanceFactory.createProcessInstance(AbstractProcessInstanceFactory.java:36)
at
org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:182)
at
org.jbpm.process.instance.ProcessRuntimeImpl.createProcessInstance(ProcessRuntimeImpl.java:154)
at
org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:135)
at
org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:130)
at
org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1074)
at
org.drools.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:301)
at com.sample.Rule_Run_Process.defaultConsequence(Rule_Run_Process.java:9)
at com.sample.Rule_Run_ProcessDefaultConsequenceInvoker.evaluate(Unknown
Source)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091)
... 6 more
The problem is in this function:
public void addProcessInstance(ProcessInstance processInstance) {
ProcessInstanceInfo processInstanceInfo = new ProcessInstanceInfo(
processInstance, this.kruntime.getEnvironment() );
ProcessPersistenceContext context
= ((ProcessPersistenceContextManager)
this.kruntime.getEnvironment()
.get( EnvironmentName.PERSISTENCE_CONTEXT_MANAGER ))
.getProcessPersistenceContext();
// @PrePersist added to ProcessInstanceInfo because of this
context.persist( processInstanceInfo );
((org.jbpm.process.instance.ProcessInstance)
processInstance).setId( processInstanceInfo.getId() );
processInstanceInfo.updateLastReadDate();
internalAddProcessInstance(processInstance);
}
We think after that persist sentence, the entity manager would have to run
a flush sentence for the process instance is inserted into database and get
the ID.
Greets.
13 years, 3 months
