Re: [rules-users] Accessing maps (hashmaps) keys and values in rules
Hi,
I can't seem to make this syntax work in Drools 4.0.2. Pls. see my sample
code below.
class MyClass {
String id;
String name;
MyClass(String id, String name){
this.id = id;
this.name = name;
}
:
getter, setter methods
:
}
MyClass obj = new MyClass("1"", "name");
TreeMap mapOfObj = new TreeMap();
mapOfObj.put("keyOfObj", obj);
DRL file
---
global java.util.TreeMap mapOfObj;
rule chkobj
when
obj : MyClass(mapOfObj["keyOfObj"].id == "1");
eval(obj.getName() == "name");
I'm getting this error: org.drools.RuntimeDroolsException:
java.lang.NullPointerException
at
org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:76)
Is my syntax correct and has someone used this in 4.0.2 or should I move on
to Drools 4.0.3? Thanks in advance.
Regards,
shaz
Edson Tirelli-3 wrote:
>
>Denis,
>
>If you are using latest build from trunk (I'm not sure it already works
> in MR3), you can use a simplified MVEL syntax:
>
> when
> Person( address["business"].phone == "" )
> then
> ...
> end
>
>Although, the above will be converted into an inline-eval. Not as bad
> as
> a top level eval, but still more costly then using regular fields.
>
>[]s
>Edson
>
> 2007/7/19, Ryan, Dennis (Dennis) <[EMAIL PROTECTED]>:
>>
>> We are using Maps (HashMaps) in our rules and the only way we have found
>> to access keys and values in the Map in the "when" clauses is thru use on
>> eval() which I know is a big no-no by rules purists. Is there a better
>> way,
>> maybe some shorthand I'm not familiar with to deal with Maps in the when
>> clause?
>>
>>
>>
>> Thanks,
>>
>> Dennis
>>
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
>
> --
> Edson Tirelli
> Software Engineer - JBoss Rules Core Developer
> Office: +55 11 3529-6000
> Mobile: +55 11 9287-5646
> JBoss, a division of Red Hat @ www.jboss.com
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
[EMAIL PROTECTED]
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RE: [rules-users] Problem with DSL in Drools 4.0.3
I finally figured out the problem. I didn't know that you couldn't mix mvel and a DSL in a rule. So by following those 8 steps, essentially that's what was happening. tansey wrote: > > I've tried this in clean installs of different versions of eclipse and > it's still not recognizing it, so I must be missing a step. The following > is what I did: > > 1. File -> New -> Drools -> Rule Project -> Finish > 2. Added new Domail Specific Language named mylang.dsl to the source > folder src/main/rules > 3. Removed all of the template rules except the Log one > 4. Added "expander mylang.dsl" after import statement in Sample.drl > 5. Uncommented line 45 (Reader dsl = ...) in DroolsTest.java > 6. Commented out line 54: builder.addPackageFromDrl( source ); > 7. Uncommented line 57: builder.addPackageFromDrl( source, dsl ); > 8. Right-clicked on DroolsTest.java -> Run As -> Java Application > > The program throws an exception saying it is unable to expand several > lines. Did I do something wrong? If not, do these steps work for anyone > else? > -- View this message in context: http://www.nabble.com/Problem-with-DSL-in-Drools-4.0.3-tf4722439.html#a13523090 Sent from the drools - user 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] Using java.util.List in rules
Do you have an import statement for importing
TipoCaracteristica?
I see you are already using TipoMolde.CABELO which I
assume is another public static variable in the
TipoMolde class.
If none of these work can you post your drl file?
Rahul
--- Anderson Pazza Mello <[EMAIL PROTECTED]> wrote:
> Yes I'm Brazilian
> I need to improve my english I now hehehe
>
> About the problem... I solved it.
>
> But now I'm getting this error when I use a static
> property in the rules:
>
> Exception in thread "AWT-EventQueue-0"
> org.drools.RuntimeDroolsException:
> Exception executing predicate
> [EMAIL PROTECTED]
> at
> org.drools.rule.PredicateConstraint.isAllowed(
> PredicateConstraint.java:197)
> at
>
org.drools.reteoo.FromNode.assertTuple(FromNode.java:70)
> at
>
org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:29)
> at
> org.drools.reteoo.EvalConditionNode.assertTuple(
> EvalConditionNode.java:150)
> at
>
org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at
>
org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> at
>
org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at
>
org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> at
>
org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at
>
org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> .
> .
> .
>
> Caused by: org.mvel.PropertyAccessException: unable
> to resolve property:
> unable to resolve token:
> TipoCaracteristica.CABELO_TOTALMENTE_CALVO
> at
> org.mvel.ast.PropertyASTNode.initializePropertyNode(
> PropertyASTNode.java:86)
> at
>
org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(
> PropertyASTNode.java:23)
> at
>
org.mvel.ast.BinaryOperation.getReducedValueAccelerated(
> BinaryOperation.java:20)
> at
> org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
> at
>
org.mvel.CompiledExpression.getValue(CompiledExpression.java:99)
> at
> org.mvel.MVEL.executeExpression(MVEL.java:219)
> at
>
org.drools.base.mvel.MVELPredicateExpression.evaluate(
> MVELPredicateExpression.java:36)
> at
> org.drools.rule.PredicateConstraint.isAllowed(
> PredicateConstraint.java:191)
> ... 44 more
>
> Example:
>
> Property :
> public class TipoCaracteristica implements
> java.io.Serializable{
> .
> .
>
> public static int CABELO_TOTALMENTE_CALVO = 37;
> .
> .
> .
> }
>
> rule:
>
> rule "CABELO_TOTALMENTE_CALVO resposta nao / Chama
> Tipo de Cabelo"
> salience 90
> when
> e : Especialista(perguntado == false)
> Especialista( $retrato : retratoUser)
> Retrato($lstCaracRetrato : lstCarac) from
> $retrato
> Retrato($lstMolde : lstMolde) from $retrato
> Molde(tipoMolde.codTipMolde ==
> TipoMolde.CABELO && $lstCaracMolde:
> lstCarac) from $lstMolde
> //CABELO_TIPO = 10
> eval(naoPerguntou($lstCaracMolde, 10))
> //CABELO_TOTALMENTE_CALVO = 37 e
> RESPOSTA_SIM = 154
> Caracteristica(tipCarac.codTipCarac ==
> TipoCaracteristica.CABELO_TOTALMENTE_CALVO &&
> valor.codValor == 154) from
> $lstCaracMolde
> then
>
>
buscarMontarPergunta(e,Pergunta.CABELO_TIPO,Especialista.CABELO);
> e.perguntado = true;
> update(e);
> end
>
> I get some statics properties like
> "TipoMolde.CABELO" without errors, but I
> can't use the properties from this class
> (TipoCaracteristica). Did you know
> why?
> If I use de value like this "valor.codValor == 154",
> I have no problem.
>
> 2007/10/29, Edson Tirelli <[EMAIL PROTECTED]>:
> >
> >
> > Anderson,
> >
> > What is the error? Can you provide a self
> contained example?
> > Using the "from CE" as showed before works.
> >
> > BTW, are you Brazilian? Your name sounds like
> a Brazilian name.
> >
> > []s
> > Edson
> >
> > 2007/10/27, Anderson Pazza Mello
> <[EMAIL PROTECTED]>:
> > >
> > > How can I test all elements of the list?
> > > Can I need to use something like "for (int
> i.)"?
> > >
> > > I'm trying to do that but it is not working...
> > >
> > > "Caracteristica( codCarac != 0 ) from
> $caracList"
> > >
> > >
> > >
> > > My test:
> > >
> > > e : Especialista (perguntado == false)
> > > Especialista( $moldeList :
> retratoUser.lstMolde )
> > > Molde( tipoMolde == TipoMolde.CABELO)
> from $moldeList
> > >
> > >
> > > When the property "tipoMolde ==
> TipoMolde.CABELO" the rule must to be
> > > fired. The List $moldeList has 5 elements.
> > >
> > > any idea?
> > >
> > >
> > > 2007/10/3, Edson Tirelli < [EMAIL PROTECTED]>:
> > > >
> > > > Use the "from" CE:
> > > >
> > > > rule "This rule will fire once for each
> Caracteristica whose codCarac
> > > > is != 0"
> > > > when
> > > > Especialista( $caracList :
> retratoUser.lstCarac )
> > > > Caracteristica( codCarac != 0 ) from
> $caracList
> > >
RE: [rules-users] Problem with DSL in Drools 4.0.3
I've tried this in clean installs of different versions of eclipse and it's still not recognizing it, so I must be missing a step. The following is what I did: 1. File -> New -> Drools -> Rule Project -> Finish 2. Added new Domail Specific Language named mylang.dsl to the source folder src/main/rules 3. Removed all of the template rules except the Log one 4. Added "expander mylang.dsl" after import statement in Sample.drl 5. Uncommented line 45 (Reader dsl = ...) in DroolsTest.java 6. Commented out line 54: builder.addPackageFromDrl( source ); 7. Uncommented line 57: builder.addPackageFromDrl( source, dsl ); 8. Right-clicked on DroolsTest.java -> Run As -> Java Application The program throws an exception saying it is unable to expand several lines. Did I do something wrong? If not, do these steps work for anyone else? -- View this message in context: http://www.nabble.com/Problem-with-DSL-in-Drools-4.0.3-tf4722439.html#a13521507 Sent from the drools - user 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] Problem with removePackage()
Can you try 4.0.3? There was some fix for package management included in
4.0.2 if I'm not mistaken...
[]s
Edson
2007/10/31, igor_b <[EMAIL PROTECTED]>:
>
>
> Hi,
>
> I'm using drools 4.0.1. I'm first adding one package to my RuleBase
> object,
> and everything works just fine:
>
> ...
> builder.addPackageFromDrl(new InputStreamReader(resource.getInputStream
> ()));
>
> if(ruleBase == null) {
> ruleBase = RuleBaseFactory.newRuleBase();
> }
> ruleBase.addPackage(builder.getPackage());
>
>
> But after some time i need to refresh my rules, so i'm using following
> code
> to remove previous package:
>
> ruleBase.removePackage("org.sample.mypackage");
>
> and i'm getting the following error:
>
> java.lang.NullPointerException
> at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java
> :222)
> at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java
> :272)
> at
> org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java
> :460)
> at
> com.diosphere.diomedia.common.drools.impl.RulesServiceImpl.refresh(
> RulesServiceImpl.java:121)
> at
> com.diosphere.diomedia.service.impl.PromotionManagerImpl.refreshDRLs(
> PromotionManagerImpl.java:39)
> 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 uk.ltd.getahead.dwr.impl.ExecuteQuery.execute(ExecuteQuery.java
> :170)
> at
> uk.ltd.getahead.dwr.impl.DefaultProcessor.doExec(DefaultProcessor.java
> :552)
> at
> uk.ltd.getahead.dwr.impl.DefaultProcessor.handle(DefaultProcessor.java:88)
> at uk.ltd.getahead.dwr.DWRServlet.doPost(DWRServlet.java:178)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
> ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(
> ApplicationFilterChain.java:206)
> at
> com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(
> PageFilter.java:118)
> at
> com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(
> PageFilter.java:52)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
> ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(
> ApplicationFilterChain.java:206)
> at
> net.sf.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java
> :167)
> at
> net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(
> FilterToBeanProxy.java:120)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
> ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(
> ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(
> StandardWrapperValve.java:230)
> at
> org.apache.catalina.core.StandardContextValve.invoke(
> StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
> :128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
> :104)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(
> StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java
> :261)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(
> Http11Protocol.java:581)
> at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(
> JIoEndpoint.java:447)
> at java.lang.Thread.run(Thread.java:619)
>
> Does anyone have a clue what might be the problem, and how to fix it?
> Kind regards!
> --
> View this message in context:
> http://www.nabble.com/Problem-with-removePackage%28%29-tf4727072.html#a13516014
> Sent from the drools - user mailing list archive at Nabble.com.
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
Edson Tirelli
Software Engineer - JBoss Rules Core Developer
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com
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Re: [rules-users] Initialize Global
I am doing something similar and having some issues. I am physically
calling setGlobal, but it doesn't seem to be getting setexample
global String USER_NAME;
rule "Initialize Globals"
salience 100
when
eval(USRE_NAME == null )
then
String name = "Josh";
drools.getWorkingMemory().setGlobal("USER_NAME", name);
System.out.println("Local Name : " + name);
System.out.println("Global Name : " + USER_NAME);
end
This produces
Josh
Null
Not sure I fully follow what is happening.I am calling setGlobal, but
the value does not appear to get set, thus the null in the last output
statement.
Also any other rule I have set up that utilizes the USER_NAME global won't
fire, ie
rule "Second Rule to Fire"
when
eval(USER_NAME != null)
then
System.out.println("Fired Second Rule);
end
This rule never fires.
Can anyone explain this? And just to clarify, yes, USER_NAME is going to be
immutable once set.
Thanks in advance!
Joshua
Kris Verlaenen wrote:
>
> You can create a rule that initializes your global, preferrably with a
> high
> salience so it gets executed first:
>
> rule "InitializeGlobal" salience 100
> when
> then
> ArrayList objectList = new ArrayList();
> objectList.add("1");
> objectList.add("2");
> drools.getWorkingMemory().setGlobal("objectList", objectList);
> end
>
> Kris
>
> - Original Message -
> From: "drools_user" <[EMAIL PROTECTED]>
> To:
> Sent: Wednesday, October 24, 2007 7:35 PM
> Subject: [rules-users] Initialize Global
>
>
>>
>> How do I initialize a global fact in the drl file? I want use the JSR94
>> API
>> and avoid using the Drools API inside the Java code. I would like to
>> access
>> the same variable every execution of a stateful session without having to
>> reinstantiate the variable after each execution?
>>
>> Basically I want to define a global like this:
>> # Define global variable
>> global List objectList ;
>>
>> # Part that does not work
>> objectList = new ArrayList() ;
>> objectList.add("1");
>> objectList.add("2");
>>
>>
>> Thanks
>> --
>> View this message in context:
>> http://www.nabble.com/Initialize-Global-tf4685186.html#a13388685
>> Sent from the drools - user mailing list archive at Nabble.com.
>>
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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[rules-users] Problem with removePackage()
Hi,
I'm using drools 4.0.1. I'm first adding one package to my RuleBase object,
and everything works just fine:
...
builder.addPackageFromDrl(new InputStreamReader(resource.getInputStream()));
if(ruleBase == null) {
ruleBase = RuleBaseFactory.newRuleBase();
}
ruleBase.addPackage(builder.getPackage());
But after some time i need to refresh my rules, so i'm using following code
to remove previous package:
ruleBase.removePackage("org.sample.mypackage");
and i'm getting the following error:
java.lang.NullPointerException
at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:222)
at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:272)
at
org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java:460)
at
com.diosphere.diomedia.common.drools.impl.RulesServiceImpl.refresh(RulesServiceImpl.java:121)
at
com.diosphere.diomedia.service.impl.PromotionManagerImpl.refreshDRLs(PromotionManagerImpl.java:39)
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 uk.ltd.getahead.dwr.impl.ExecuteQuery.execute(ExecuteQuery.java:170)
at
uk.ltd.getahead.dwr.impl.DefaultProcessor.doExec(DefaultProcessor.java:552)
at
uk.ltd.getahead.dwr.impl.DefaultProcessor.handle(DefaultProcessor.java:88)
at uk.ltd.getahead.dwr.DWRServlet.doPost(DWRServlet.java:178)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at
com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
net.sf.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:167)
at
net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:120)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Does anyone have a clue what might be the problem, and how to fix it?
Kind regards!
--
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Re: [rules-users] RE: JavaConsequenceBuilder.buildNullPointerException
Already did. Will be included in the next release:
http://jira.jboss.com/jira/browse/JBRULES-1311
[]s
Edson
2007/10/31, Michael Fuller <[EMAIL PROTECTED]>:
>
> Thank you so very much. Yes, changing the parse to handle this would be
> very helpful.
>
>
> --
>
> *From:* [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] *On Behalf Of *Edson Tirelli
> *Sent:* Wednesday, October 31, 2007 12:32 PM
> *To:* Rules Users List
> *Subject:* Re: [rules-users] RE:
> JavaConsequenceBuilder.buildNullPointerException
>
>
>
>
>Michael,
>
>The problem is you missed the "" on:
>
> $result.addPassedRule(leaders in same location);
>
>
> I will fix the parser code to not throw NPE for this anymore.
>
> Thanks,
> Edson
>
> 2007/10/31, Michael Fuller <[EMAIL PROTECTED]>:
>
> Sure. Thanks
>
>
>
> package validActions;
>
> import myPackage.domain.leader.LeaderImpl;
>
> import myPackage.domain.location.LocationImpl;
>
> import myPackage.domain.leader.LeaderTypeImpl;
>
> import myPackage.rivoli.service.rules.RuleResult;
>
>
>
> rule "leaders in same location"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leaders in same
> location")
>
> $loc : LocationImpl()
>
> $leaderName : String()
>
> $leader1 : LeaderImpl(name == $leaderName, location == $loc)
>
> $leader2 : LeaderImpl(name != $leaderName, this != $leader1, location
> == $loc)
>
> then
>
> $result.addPassedRule(leaders in same location);
>
> update($result);
>
> end
>
>
>
> rule "leaders king and heir"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leaders king and heir")
>
> $leaderName : String()
>
> $king : LeaderTypeImpl(name == "King")
>
> $heir : LeaderTypeImpl(name == "Heir")
>
> $leader1 : LeaderImpl(name == $leaderName, leaderType == $king)
>
> $leader2 : LeaderImpl(name != $leaderName, this != $leader1,
> leaderType == $heir)
>
> then
>
> $result.addPassedRule("leaders king and heir");
>
> update($result);
>
> end
>
>
>
> rule "leader in capital"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leader in capital")
>
> $loc : LocationImpl(capital == true)
>
> $leader1 : LeaderImpl(location == $loc)
>
> then
>
> $result.addPassedRule("leader in capital");
>
> update($result);
>
> end
>
>
>
> rule "leader in homeland"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leader in homeland")
>
> $loc : LocationImpl(homeland == true)
>
> $leader1 : LeaderImpl(location == $loc)
>
> then
>
> $result.addPassedRule("leader in homeland");
>
> update($result);
>
> end
>
>
>
> rule "abdication allowed"
>
> when
>
> $result : RuleResult (rulesPassed not contains "abdication allowed"
>
> && rulesPassed contains "leaders in same location"
>
> && rulesPassed contains "leaders king and heir")
>
> then
>
> $result.addPassedRule("abdication allowed");
>
> update($result);
>
> end
>
>
> --
>
> *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> *On Behalf Of *Edson Tirelli
> *Sent:* Tuesday, October 30, 2007 2:31 PM
> *To:* Rules Users List
> *Subject:* Re: [rules-users] RE:
> JavaConsequenceBuilder.buildNullPointerException
>
>
>
>Michael,
>
>Can you show us your rule(s) please? it is raising the NPE when trying
> to get the list of variables you use in the consequence... as soon as we
> determine what the real problem is, I can fix the error message...
>
>[]s
>Edson
>
> 2007/10/30, Michael Fuller <[EMAIL PROTECTED]>:
>
> I have the following code: (note String[] ruleFiles contains only one
> string)
>
>
>
> public class Engine {
>
> private static RuleBase ruleBase;
>
>
>
> public void start(String[] ruleFiles) throws Exception {
>
> PackageBuilderConfiguration cfg = new
> PackageBuilderConfiguration();
>
> JavaDialectConfiguration javaConf = (JavaDialectConfiguration)
> cfg.getDialectConfiguration("java");
>
> javaConf.setCompiler(JavaDialectConfiguration.ECLIPSE);
>
> PackageBuilder builder = new PackageBuilder(cfg);
>
> for (String file : ruleFiles) {
>
> builder.addPackageFromDrl(new InputStreamReader(
> ClassLoader.getSystemResourceAsStream(file)));
>
> }
>
> Package pkg = builder.getPackage();
>
>
>
> PackageBuilderErrors errors = builder.getErrors();
>
> if (errors.getErrors().length != 0) {
>
> // do something
>
> }
>
>
>
> RuleBaseConfiguration conf = new RuleBaseConfiguration();
>
> conf.setAssertBehaviour(
> RuleBaseConfiguration.AssertBehaviour.EQUALITY);
>
>
>
> ruleBase = RuleBaseFactory.newRuleBase();
>
> ruleBase.addPackage(pkg);
>
> ruleBase.newStatefulSession(false);
>
>
>
> }
>
> }
>
>
>
> At the builder.addPackageFromDrl(new InputStreamReader(
> ClassLoader.getSy
RE: [rules-users] Problem with DSL in Drools 4.0.3
I have included a reference to "expander" in my DRL. The files look as
follows:
(src/main/rules/mylang.dsl)
[consequence][]Log "{msg}"=System.out.println("{msg}");
(src/main/rules/Sample.drl)
package com.sample
expander mylang.dsl
import com.sample.DroolsTest.Message;
rule "Hello World"
when
m : Message( status == Message.HELLO, message : message )
then
System.out.println( message );
m.setMessage( "Goodbye cruel world" );
m.setStatus( Message.GOODBYE );
update( m );
end
rule "GoodBye"
no-loop true
when
m : Message( status == Message.GOODBYE, message : message )
then
System.out.println( message );
m.setMessage( message );
end
(src/main/java/DroolsTest.java)
package com.sample;
import java.io.InputStreamReader;
import java.io.Reader;
import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.compiler.PackageBuilder;
import org.drools.rule.Package;
/**
* This is a sample file to launch a rule package from a rule source file.
*/
public class DroolsTest {
public static final void main(String[] args) {
try {
//load up the rulebase
RuleBase ruleBase = readRule();
WorkingMemory workingMemory = ruleBase.newStatefulSession();
//go !
Message message = new Message();
message.setMessage( "Hello World" );
message.setStatus( Message.HELLO );
workingMemory.insert( message );
workingMemory.fireAllRules();
} catch (Throwable t) {
t.printStackTrace();
}
}
/**
* Please note that this is the "low level" rule assembly API.
*/
private static RuleBase readRule() throws Exception {
//read in the source
Reader source = new InputStreamReader(
DroolsTest.class.getResourceAsStream( "/Sample.drl" ) );
//optionally read in the DSL (if you are using it).
Reader dsl = new InputStreamReader(
DroolsTest.class.getResourceAsStream(
"/mylang.dsl" ) );
//Use package builder to build up a rule package.
//An alternative lower level class called "DrlParser" can also
be used...
PackageBuilder builder = new PackageBuilder();
//this wil parse and compile in one step
//NOTE: There are 2 methods here, the one argument one is for
normal DRL.
//builder.addPackageFromDrl( source );
//Use the following instead of above if you are using a DSL:
builder.addPackageFromDrl( source, dsl );
//get the compiled package (which is serializable)
Package pkg = builder.getPackage();
//add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage( pkg );
return ruleBase;
}
public static class Message {
public static final int HELLO = 0;
public static final int GOODBYE = 1;
private String message;
private int status;
public String getMessage() {
return this.message;
}
public void setMessage(String message) {
this.message = message;
}
public int getStatus() {
return this.status;
}
public void setStatus( int status ) {
this.status = status;
}
}
}
Anstis, Michael (M.) wrote:
>
> Can you provide your DRL and DSL?
>
> Have you included a reference to "expander" in your DRL?
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of tansey
> Sent: 31 October 2007 07:55
> To: rules-users@lists.jboss.org
> Subject: [rules-users] Problem with DSL in Drools 4.0.3
>
>
> I'm new to Drools, and I've setup the latest version of it in Eclipse 3.2.
> I'm having trouble whenever I try to use a DSL though. I took the
> standard
> Hello World example and added the 'mylang.dsl' file, and changed the lines
> in DroolsTest.readRule() as follows:
>
> private static RuleBase readRule() throws Exception {
> //read in the source
> Reader source = new InputStreamReader(
> DroolsTest.class.getResourceAsStream( "/Sample.drl" ) );
>
> //optionally rea
RE: [rules-users] RE: JavaConsequenceBuilder.buildNullPointerException
Thank you so very much. Yes, changing the parse to handle this would be
very helpful.
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Edson Tirelli
Sent: Wednesday, October 31, 2007 12:32 PM
To: Rules Users List
Subject: Re: [rules-users] RE:
JavaConsequenceBuilder.buildNullPointerException
Michael,
The problem is you missed the "" on:
$result.addPassedRule(leaders in same location);
I will fix the parser code to not throw NPE for this anymore.
Thanks,
Edson
2007/10/31, Michael Fuller <[EMAIL PROTECTED]>:
Sure. Thanks
package validActions;
import myPackage.domain.leader.LeaderImpl;
import myPackage.domain.location.LocationImpl;
import myPackage.domain.leader.LeaderTypeImpl;
import myPackage.rivoli.service.rules.RuleResult;
rule "leaders in same location"
salience 10
when
$result : RuleResult(rulesPassed not contains "leaders in same
location")
$loc : LocationImpl()
$leaderName : String()
$leader1 : LeaderImpl(name == $leaderName, location == $loc)
$leader2 : LeaderImpl(name != $leaderName, this != $leader1,
location == $loc)
then
$result.addPassedRule(leaders in same location);
update($result);
end
rule "leaders king and heir"
salience 10
when
$result : RuleResult(rulesPassed not contains "leaders king and
heir")
$leaderName : String()
$king : LeaderTypeImpl(name == "King")
$heir : LeaderTypeImpl(name == "Heir")
$leader1 : LeaderImpl(name == $leaderName, leaderType == $king)
$leader2 : LeaderImpl(name != $leaderName, this != $leader1,
leaderType == $heir)
then
$result.addPassedRule("leaders king and heir");
update($result);
end
rule "leader in capital"
salience 10
when
$result : RuleResult(rulesPassed not contains "leader in capital")
$loc : LocationImpl(capital == true)
$leader1 : LeaderImpl(location == $loc)
then
$result.addPassedRule("leader in capital");
update($result);
end
rule "leader in homeland"
salience 10
when
$result : RuleResult(rulesPassed not contains "leader in homeland")
$loc : LocationImpl(homeland == true)
$leader1 : LeaderImpl(location == $loc)
then
$result.addPassedRule("leader in homeland");
update($result);
end
rule "abdication allowed"
when
$result : RuleResult (rulesPassed not contains "abdication allowed"
&& rulesPassed contains "leaders in same location"
&& rulesPassed contains "leaders king and heir")
then
$result.addPassedRule("abdication allowed");
update($result);
end
From: [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED]
] On Behalf Of Edson
Tirelli
Sent: Tuesday, October 30, 2007 2:31 PM
To: Rules Users List
Subject: Re: [rules-users] RE:
JavaConsequenceBuilder.buildNullPointerException
Michael,
Can you show us your rule(s) please? it is raising the NPE when
trying to get the list of variables you use in the consequence... as
soon as we determine what the real problem is, I can fix the error
message...
[]s
Edson
2007/10/30, Michael Fuller <[EMAIL PROTECTED]>:
I have the following code: (note String[] ruleFiles contains only one
string)
public class Engine {
private static RuleBase ruleBase;
public void start(String[] ruleFiles) throws Exception {
PackageBuilderConfiguration cfg = new
PackageBuilderConfiguration();
JavaDialectConfiguration javaConf = (JavaDialectConfiguration)
cfg.getDialectConfiguration("java");
javaConf.setCompiler(JavaDialectConfiguration.ECLIPSE);
PackageBuilder builder = new PackageBuilder(cfg);
for (String file : ruleFiles) {
builder.addPackageFromDrl(new
InputStreamReader(ClassLoader.getSystemResourceAsStream(file)));
}
Package pkg = builder.getPackage();
PackageBuilderErrors errors = builder.getErrors();
if (errors.getErrors().length != 0) {
// do something
}
RuleBaseConfiguration conf = new RuleBaseConfiguration();
conf.setAssertBehaviour(RuleBaseConfiguration.AssertBehaviour.EQUALITY);
ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(pkg);
ruleBase.newStatefulSession(false);
}
}
At the builder.addPackageFromDrl(new
InputStreamReader(ClassLoader.getSystemResourceAsStream(file))); line
I'm getting the following exception:
java.lang.NullPointerException
at
org.drools.rule.builder.dialect.java.JavaConsequenceBuilder.build(JavaCo
nsequenceBuilder.java:54)
at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:67)
at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:446)
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304)
at
org.drools.compiler.PackageBuilder.addPackag
RE: [rules-users] Executing rules actions asynchronously
My thinking is that when the Web Service returns (asynchronously through JMS or by an extra thread that you created) to insert the result into the memory perhaps as a generic reply object so other rules will fire when the object is inserted, depending of course on the contents of the reply object. You will have to use a stateful session for this to work and I think that you will have to keep calling the fireAllRules() after each returning Web Service reply is inserted into the working memory. About JMS it is a much better alternative of creating asynchronous requests than creating your own threads, as you will find support for Thread Pooling, Transactions, Priority queues etc. depending on the JMS implementation. Of course you can achieve the same with creating your own threads but I think it will be a lot of work. Spyros Spyros Sakellariou Principal Product Manager - Solution Architect Markopoulo Ave. 19002 Paiania Athens, Greece Tel. +30 210 667 9874 Mob. +30 694 700 7984 email [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlos Vieira Sent: Wednesday, October 31, 2007 5:46 PM To: Rules Users List Subject: Re: [rules-users] Executing rules actions asynchronously Hi Spyros, Well, i tried launching a thread for each Web Service call, and it works ok... but i need to use the return of Web Service in the right side of the rule to, for example, insert another fact... so, i have to wait for the execution... What i want is to execute a set of actions (in the right side of a rule) in a different thread. But i will look for JMS to see capabilities, and to see if fit my purposes. Thx for the help Regards Carlos V. Spyros Sakellariou wrote: > Hi Carlos, > > I don't know if this is possible in drools but an alternative is instead of > calling web services synchronously from drools, to call them asynchronously > using JMS. That way you don't have to wait for each service to return. > > Spyros > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Carlos Vieira > Sent: Wednesday, October 31, 2007 5:02 PM > To: rules-users@lists.jboss.org > Subject: [rules-users] Executing rules actions asynchronously > > Hi, > > I'm facing a situation, that maybe some of you just solved out in the past. > I need that the execution of matched rules ( Activations that are > already in the Agenda, referencing those rules) is done asynchronously. > > In more detail, i need that each set of actions owned by two or more > rules, runs in a separated thread. > The problem here is that i need to invoke external Web Services in rule > actions well, some Web Services may take too long to return > something, what makes the other actions of other rules to wait for > this... what is not an expected behavior... > > Any one knows if jboss rules already support this kind of approach? If > not, any one has passed through this? > Accessing to the mechanism of firing individual rules seems to be the > best way, overriding a couple of classes. how can i fire just one > rule with jboss rules? is this the best choice? > > Well, if anyone has any idea, it would be nice > > Regards > Carlos V. > > ___ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Using java.util.List in rules
Anderson,
For some reason, MVEL is not resolving your class. Are you using latest
drools version with latest MVEL jar?
Can you send me a self contained test with this rule?
[]s
Edson
2007/10/31, Anderson Pazza Mello <[EMAIL PROTECTED]>:
>
> Do you know why? *
>
> =)
>
> 2007/10/30, Anderson Pazza Mello <[EMAIL PROTECTED]>:
> >
> > Yes I'm Brazilian
> > I need to improve my english I now hehehe
> >
> > About the problem... I solved it.
> >
> > But now I'm getting this error when I use a static property in the
> > rules:
> >
> > Exception in thread "AWT-EventQueue-0" org.drools.RuntimeDroolsException:
> > Exception executing predicate
> > [EMAIL PROTECTED]
> > at org.drools.rule.PredicateConstraint.isAllowed(
> > PredicateConstraint.java:197)
> > at org.drools.reteoo.FromNode.assertTuple(FromNode.java :70)
> > at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> > SingleTupleSinkAdapter.java:29)
> > at org.drools.reteoo.EvalConditionNode.assertTuple(
> > EvalConditionNode.java:150)
> > at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple (
> > SingleTupleSinkAdapter.java:20)
> > at org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> > at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> > SingleTupleSinkAdapter.java:20)
> > at org.drools.reteoo.FromNode.assertTuple (FromNode.java:87)
> > at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> > SingleTupleSinkAdapter.java:20)
> > at org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> > .
> > .
> > .
> >
> > Caused by: org.mvel.PropertyAccessException: unable to resolve property:
> > unable to resolve token: TipoCaracteristica.CABELO_TOTALMENTE_CALVO
> > at org.mvel.ast.PropertyASTNode.initializePropertyNode(
> > PropertyASTNode.java:86)
> > at org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(
> > PropertyASTNode.java :23)
> > at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(
> > BinaryOperation.java:20)
> > at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
> > at org.mvel.CompiledExpression.getValue(CompiledExpression.java:99)
> > at org.mvel.MVEL.executeExpression(MVEL.java:219)
> > at org.drools.base.mvel.MVELPredicateExpression.evaluate (
> > MVELPredicateExpression.java:36)
> > at org.drools.rule.PredicateConstraint.isAllowed(
> > PredicateConstraint.java:191)
> > ... 44 more
> >
> > Example:
> >
> > Property :
> > public class TipoCaracteristica implements java.io.Serializable{
> > .
> > .
> >
> > public static int CABELO_TOTALMENTE_CALVO = 37;
> > .
> > .
> > .
> > }
> >
> > rule:
> >
> > rule "CABELO_TOTALMENTE_CALVO resposta nao / Chama Tipo de Cabelo"
> > salience 90
> > when
> > e : Especialista(perguntado == false)
> > Especialista( $retrato : retratoUser)
> > Retrato($lstCaracRetrato : lstCarac) from $retrato
> > Retrato($lstMolde : lstMolde) from $retrato
> > Molde(tipoMolde.codTipMolde == TipoMolde.CABELO &&
> > $lstCaracMolde: lstCarac) from $lstMolde
> > //CABELO_TIPO = 10
> > eval(naoPerguntou($lstCaracMolde, 10))
> > //CABELO_TOTALMENTE_CALVO = 37 e RESPOSTA_SIM = 154
> > Caracteristica(tipCarac.codTipCarac ==
> > TipoCaracteristica.CABELO_TOTALMENTE_CALVO && valor.codValor == 154)
> > from $lstCaracMolde
> > then
> > buscarMontarPergunta(e,Pergunta.CABELO_TIPO,Especialista.CABELO
> > );
> > e.perguntado = true;
> > update(e);
> > end
> >
> > I get some statics properties like "TipoMolde.CABELO" without errors,
> > but I can't use the properties from this class (TipoCaracteristica). Did you
> > know why?
> > If I use de value like this " valor.codValor == 154", I have no problem.
> >
> > 2007/10/29, Edson Tirelli < [EMAIL PROTECTED]>:
> > >
> > >
> > > Anderson,
> > >
> > > What is the error? Can you provide a self contained example?
> > > Using the "from CE" as showed before works.
> > >
> > > BTW, are you Brazilian? Your name sounds like a Brazilian name.
> > >
> > > []s
> > > Edson
> > >
> > > 2007/10/27, Anderson Pazza Mello <[EMAIL PROTECTED] >:
> > > >
> > > > How can I test all elements of the list?
> > > > Can I need to use something like "for (int i.)"?
> > > >
> > > > I'm trying to do that but it is not working...
> > > >
> > > > "Caracteristica( codCarac != 0 ) from $caracList"
> > > >
> > > >
> > > >
> > > > My test:
> > > >
> > > > e : Especialista (perguntado == false)
> > > > Especialista( $moldeList : retratoUser.lstMolde )
> > > > Molde( tipoMolde == TipoMolde.CABELO) from $moldeList
> > > >
> > > >
> > > > When the property "tipoMolde == TipoMolde.CABELO" the rule must to
> > > > be fired. The List $moldeList has 5 elements.
> > > >
> > > > any idea?
> > > >
> > > >
> > > > 2007/10/3, Edson Tirelli < [EMAIL PROTECTED]>:
> > > > >
> > > > > Use the "from" CE:
> > > > >
> > > >
Re: [rules-users] RE: JavaConsequenceBuilder.buildNullPointerException
Michael,
The problem is you missed the "" on:
$result.addPassedRule(leaders in same location);
I will fix the parser code to not throw NPE for this anymore.
Thanks,
Edson
2007/10/31, Michael Fuller <[EMAIL PROTECTED]>:
>
> Sure. Thanks
>
>
>
> package validActions;
>
> import myPackage.domain.leader.LeaderImpl;
>
> import myPackage.domain.location.LocationImpl;
>
> import myPackage.domain.leader.LeaderTypeImpl;
>
> import myPackage.rivoli.service.rules.RuleResult;
>
>
>
> rule "leaders in same location"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leaders in same
> location")
>
> $loc : LocationImpl()
>
> $leaderName : String()
>
> $leader1 : LeaderImpl(name == $leaderName, location == $loc)
>
> $leader2 : LeaderImpl(name != $leaderName, this != $leader1, location
> == $loc)
>
> then
>
> $result.addPassedRule(leaders in same location);
>
> update($result);
>
> end
>
>
>
> rule "leaders king and heir"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leaders king and heir")
>
> $leaderName : String()
>
> $king : LeaderTypeImpl(name == "King")
>
> $heir : LeaderTypeImpl(name == "Heir")
>
> $leader1 : LeaderImpl(name == $leaderName, leaderType == $king)
>
> $leader2 : LeaderImpl(name != $leaderName, this != $leader1,
> leaderType == $heir)
>
> then
>
> $result.addPassedRule("leaders king and heir");
>
> update($result);
>
> end
>
>
>
> rule "leader in capital"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leader in capital")
>
> $loc : LocationImpl(capital == true)
>
> $leader1 : LeaderImpl(location == $loc)
>
> then
>
> $result.addPassedRule("leader in capital");
>
> update($result);
>
> end
>
>
>
> rule "leader in homeland"
>
> salience 10
>
> when
>
> $result : RuleResult(rulesPassed not contains "leader in homeland")
>
> $loc : LocationImpl(homeland == true)
>
> $leader1 : LeaderImpl(location == $loc)
>
> then
>
> $result.addPassedRule("leader in homeland");
>
> update($result);
>
> end
>
>
>
> rule "abdication allowed"
>
> when
>
> $result : RuleResult (rulesPassed not contains "abdication allowed"
>
> && rulesPassed contains "leaders in same location"
>
> && rulesPassed contains "leaders king and heir")
>
> then
>
> $result.addPassedRule("abdication allowed");
>
> update($result);
>
> end
>
>
> --
>
> *From:* [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] *On Behalf Of *Edson Tirelli
> *Sent:* Tuesday, October 30, 2007 2:31 PM
> *To:* Rules Users List
> *Subject:* Re: [rules-users] RE:
> JavaConsequenceBuilder.buildNullPointerException
>
>
>
>Michael,
>
>Can you show us your rule(s) please? it is raising the NPE when trying
> to get the list of variables you use in the consequence... as soon as we
> determine what the real problem is, I can fix the error message...
>
>[]s
>Edson
>
> 2007/10/30, Michael Fuller <[EMAIL PROTECTED]>:
>
> I have the following code: (note String[] ruleFiles contains only one
> string)
>
>
>
> public class Engine {
>
> private static RuleBase ruleBase;
>
>
>
> public void start(String[] ruleFiles) throws Exception {
>
> PackageBuilderConfiguration cfg = new
> PackageBuilderConfiguration();
>
> JavaDialectConfiguration javaConf = (JavaDialectConfiguration)
> cfg.getDialectConfiguration("java");
>
> javaConf.setCompiler(JavaDialectConfiguration.ECLIPSE);
>
> PackageBuilder builder = new PackageBuilder(cfg);
>
> for (String file : ruleFiles) {
>
> builder.addPackageFromDrl(new InputStreamReader(
> ClassLoader.getSystemResourceAsStream(file)));
>
> }
>
> Package pkg = builder.getPackage();
>
>
>
> PackageBuilderErrors errors = builder.getErrors();
>
> if (errors.getErrors().length != 0) {
>
> // do something
>
> }
>
>
>
> RuleBaseConfiguration conf = new RuleBaseConfiguration();
>
> conf.setAssertBehaviour(
> RuleBaseConfiguration.AssertBehaviour.EQUALITY);
>
>
>
> ruleBase = RuleBaseFactory.newRuleBase();
>
> ruleBase.addPackage(pkg);
>
> ruleBase.newStatefulSession(false);
>
>
>
> }
>
> }
>
>
>
> At the builder.addPackageFromDrl(new InputStreamReader(
> ClassLoader.getSystemResourceAsStream(file))); line I'm getting the
> following exception:
>
> java.lang.NullPointerException
>
> at
> org.drools.rule.builder.dialect.java.JavaConsequenceBuilder.build(
> JavaConsequenceBuilder.java:54)
>
> at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java
> :67)
>
> at org.drools.compiler.PackageBuilder.addRule(
> PackageBuilder.java:446)
>
> at org.drools.compiler.PackageBuilder.addPackage(
> PackageBuilder.java:304)
>
> at org.drools.compiler.PackageBuilder.addPackageFromDrl(
>
Re: [rules-users] Executing rules actions asynchronously
Hi Spyros, Well, i tried launching a thread for each Web Service call, and it works ok... but i need to use the return of Web Service in the right side of the rule to, for example, insert another fact... so, i have to wait for the execution... What i want is to execute a set of actions (in the right side of a rule) in a different thread. But i will look for JMS to see capabilities, and to see if fit my purposes. Thx for the help Regards Carlos V. Spyros Sakellariou wrote: > Hi Carlos, > > I don't know if this is possible in drools but an alternative is instead of > calling web services synchronously from drools, to call them asynchronously > using JMS. That way you don't have to wait for each service to return. > > Spyros > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Carlos Vieira > Sent: Wednesday, October 31, 2007 5:02 PM > To: rules-users@lists.jboss.org > Subject: [rules-users] Executing rules actions asynchronously > > Hi, > > I'm facing a situation, that maybe some of you just solved out in the past. > I need that the execution of matched rules ( Activations that are > already in the Agenda, referencing those rules) is done asynchronously. > > In more detail, i need that each set of actions owned by two or more > rules, runs in a separated thread. > The problem here is that i need to invoke external Web Services in rule > actions well, some Web Services may take too long to return > something, what makes the other actions of other rules to wait for > this... what is not an expected behavior... > > Any one knows if jboss rules already support this kind of approach? If > not, any one has passed through this? > Accessing to the mechanism of firing individual rules seems to be the > best way, overriding a couple of classes. how can i fire just one > rule with jboss rules? is this the best choice? > > Well, if anyone has any idea, it would be nice > > Regards > Carlos V. > > ___ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > begin:vcard fn:Carlos Vieira n:Vieira;Carlos org;quoted-printable:Telbit - Tecnologias de Informa=C3=A7=C3=A3o email;internet:[EMAIL PROTECTED] version:2.1 end:vcard ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
RE: [rules-users] Executing rules actions asynchronously
Hi Carlos, I don't know if this is possible in drools but an alternative is instead of calling web services synchronously from drools, to call them asynchronously using JMS. That way you don't have to wait for each service to return. Spyros -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlos Vieira Sent: Wednesday, October 31, 2007 5:02 PM To: rules-users@lists.jboss.org Subject: [rules-users] Executing rules actions asynchronously Hi, I'm facing a situation, that maybe some of you just solved out in the past. I need that the execution of matched rules ( Activations that are already in the Agenda, referencing those rules) is done asynchronously. In more detail, i need that each set of actions owned by two or more rules, runs in a separated thread. The problem here is that i need to invoke external Web Services in rule actions well, some Web Services may take too long to return something, what makes the other actions of other rules to wait for this... what is not an expected behavior... Any one knows if jboss rules already support this kind of approach? If not, any one has passed through this? Accessing to the mechanism of firing individual rules seems to be the best way, overriding a couple of classes. how can i fire just one rule with jboss rules? is this the best choice? Well, if anyone has any idea, it would be nice Regards Carlos V. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Executing rules actions asynchronously
Hi, I'm facing a situation, that maybe some of you just solved out in the past. I need that the execution of matched rules ( Activations that are already in the Agenda, referencing those rules) is done asynchronously. In more detail, i need that each set of actions owned by two or more rules, runs in a separated thread. The problem here is that i need to invoke external Web Services in rule actions well, some Web Services may take too long to return something, what makes the other actions of other rules to wait for this... what is not an expected behavior... Any one knows if jboss rules already support this kind of approach? If not, any one has passed through this? Accessing to the mechanism of firing individual rules seems to be the best way, overriding a couple of classes. how can i fire just one rule with jboss rules? is this the best choice? Well, if anyone has any idea, it would be nice Regards Carlos V. begin:vcard fn:Carlos Vieira n:Vieira;Carlos org;quoted-printable:Telbit - Tecnologias de Informa=C3=A7=C3=A3o email;internet:[EMAIL PROTECTED] version:2.1 end:vcard ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Problem running JBRMS 4.0.3 on JBoss AS 4.2.1
Ok guys, Im check this problem at the moment/. On 10/31/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > I think there must be a bug with the 4.0.3 BRMS .war file. I upgraded > to 4.0.3 (including the BRMS .war file) and received the same errors > listed below when tring to login to the BRMS. I then copied the 4.0.1 > BRMS .war file to the server/deploy directory and everything works fine. > I also did a scan for 'drools-jbrms*' and deleted all files/folders each > time. All files are version 4.0.3 except for the .war file which is 4.0.1 > . > Any response from the Drools developers, does the 4.0.3 .war file not > work? > > On Wed, Oct 31, 2007 at 07:05:53AM -0700, Aziz Boxwala wrote: > > Switching to AS 4.2.0 may not be an easy option for us. Much of our > development > > product development has been done with 4.2.1. > > > > I did not have this problem with BRMS 4.0.0 running on AS 4.2.1. > > > > I should clarify that the exception is thrown when trying to login to > the BRMS. > > > > If there is no resolution, is it possible to get to earlier builds ( > 4.0.0 > > latest, or 4.0.1). The downloads page only lists 4.0.3. > > > > Thanks, > > --Aziz > > > > > - > > Aziz > > > > I have/had the same problem under Windows NT. I never received a > > resolution so I just stayed with 4.2.0. It must not work with 4.2.1. > > > > Rod > > On Fri, Oct 26, 2007 at 09:27:23AM -0700, Aziz Boxwala wrote: > > > I cannot > > get the BRMS to run on JBoss AS 4.2.1. (on Windows Vista). > > > > > > Any help/hints to fix this will be appreciated. This is the error I > get: > > > > > > 12:19:03,577 INFO [STDOUT] ERROR 26-10 12:19:03,576 > > > (Contexts.java:flushAndDestroyContexts:335) could not discover > > > transaction status > > > 12:19:03,579 INFO [STDOUT] ERROR 26-10 12:19:03,578 > > > (StandardWrapperValve.java:invoke:278) Servlet.service() for s > > > ervlet default threw exception > > > java.lang.IllegalStateException: Cannot create a session after the > response has > > > been committed > > > at org.apache.catalina.connector.Request.doGetSession > > > (Request.java:2284) > > > at org.apache.catalina.connector.Request.getSession( > Request.java:2066) > > > at > > org.apache.catalina.connector.RequestFacade.getSession > > > (RequestFacade.java:833) > > > at org.jboss.seam.servlet.ServletRequestSessionMap.put > > > (ServletRequestSessionMap.java:87) > > > at org.jboss.seam.servlet.ServletRequestSessionMap.put > > > (ServletRequestSessionMap.java:25) > > > at org.jboss.seam.contexts.BasicContext.set(BasicContext.java > :80) > > > at org.jboss.seam.Component.newInstance(Component.java:1980) > > > at org.jboss.seam.Component.getInstance(Component.java:1878) > > > at org.jboss.seam.Component.getInstance(Component.java:1857) > > > at org.jboss.seam.Component.getInstance(Component.java:1834) > > > at org.jboss.seam.web.Session.getInstance(Session.java:122) > > > at org.jboss.seam.contexts.Contexts.flushAndDestroyContexts > > > > > (Contexts.java:375) > > > at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java > :132) > > > at org.jboss.seam.servlet.ContextualHttpServletRequest.run > > > (ContextualHttpServletRequest.java:65) > > > at org.jboss.seam.web.ContextFilter.doFilter( > ContextFilter.java:37) > > > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > > > (ApplicationFilterChain.java:235) > > > at org.apache.catalina.core.ApplicationFilterChain.doFilter > > > (ApplicationFilterChain.java:206) > > > at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter > > > (ReplyHeaderFilter.java:96) > > > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > > > (ApplicationFilterChain.java:235) > > > at > > org.apache.catalina.core.ApplicationFilterChain.doFilter > > > (ApplicationFilterChain.java:206) > > > at org.apache.catalina.core.StandardWrapperValve.invoke > > > (StandardWrapperValve.java:230) > > > at org.apache.catalina.core.StandardContextValve.invoke > > > (StandardContextValve.java:175) > > > at > org.jboss.web.tomcat.security.SecurityAssociationValve.invoke > > > (SecurityAssociationValve.java:179) > > > at org.jboss.web.tomcat.security.JaccContextValve.invoke > > > (JaccContextValve.java:84) > > > at org.apache.catalina.core.StandardHostValve.invoke > > > (StandardHostValve.java:128) > > > at org.apache.catalina.valves.ErrorReportValve.invoke > > > (ErrorReportValve.java:104) > > > at > org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke > > > > > (CachedConnectionValve.java:157) > > > at org.apache.catalina.core.StandardEngineValve.invoke > > > (StandardEngineValve.java:109) > > > at org.apache.catalina.connector.CoyoteAdap
Re: [rules-users] Problem running JBRMS 4.0.3 on JBoss AS 4.2.1
I think there must be a bug with the 4.0.3 BRMS .war file. I upgraded to 4.0.3 (including the BRMS .war file) and received the same errors listed below when tring to login to the BRMS. I then copied the 4.0.1 BRMS .war file to the server/deploy directory and everything works fine. I also did a scan for 'drools-jbrms*' and deleted all files/folders each time. All files are version 4.0.3 except for the .war file which is 4.0.1. Any response from the Drools developers, does the 4.0.3 .war file not work? On Wed, Oct 31, 2007 at 07:05:53AM -0700, Aziz Boxwala wrote: > Switching to AS 4.2.0 may not be an easy option for us. Much of our > development > product development has been done with 4.2.1. > > I did not have this problem with BRMS 4.0.0 running on AS 4.2.1. > > I should clarify that the exception is thrown when trying to login to the > BRMS. > > If there is no resolution, is it possible to get to earlier builds (4.0.0 > latest, or 4.0.1). The downloads page only lists 4.0.3. > > Thanks, > --Aziz > > - > Aziz > > I have/had the same problem under Windows NT. I never received a > resolution so I just stayed with 4.2.0. It must not work with 4.2.1. > > Rod > On Fri, Oct 26, 2007 at 09:27:23AM -0700, Aziz Boxwala wrote: > > I cannot > get the BRMS to run on JBoss AS 4.2.1. (on Windows Vista). > > > > Any help/hints to fix this will be appreciated. This is the error I get: > > > > 12:19:03,577 INFO [STDOUT] ERROR 26-10 12:19:03,576 > > (Contexts.java:flushAndDestroyContexts:335) could not discover > > transaction status > > 12:19:03,579 INFO [STDOUT] ERROR 26-10 12:19:03,578 > > (StandardWrapperValve.java:invoke:278) Servlet.service() for s > > ervlet default threw exception > > java.lang.IllegalStateException: Cannot create a session after the response > > has > > been committed > > at org.apache.catalina.connector.Request.doGetSession > > (Request.java:2284) > > at > > org.apache.catalina.connector.Request.getSession(Request.java:2066) > > at > org.apache.catalina.connector.RequestFacade.getSession > > (RequestFacade.java:833) > > at org.jboss.seam.servlet.ServletRequestSessionMap.put > > (ServletRequestSessionMap.java:87) > > at org.jboss.seam.servlet.ServletRequestSessionMap.put > > (ServletRequestSessionMap.java:25) > > at org.jboss.seam.contexts.BasicContext.set(BasicContext.java:80) > > at org.jboss.seam.Component.newInstance(Component.java:1980) > > at org.jboss.seam.Component.getInstance(Component.java:1878) > > at org.jboss.seam.Component.getInstance(Component.java:1857) > > at org.jboss.seam.Component.getInstance(Component.java:1834) > > at org.jboss.seam.web.Session.getInstance(Session.java:122) > > at org.jboss.seam.contexts.Contexts.flushAndDestroyContexts > > > (Contexts.java:375) > > at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:132) > > at org.jboss.seam.servlet.ContextualHttpServletRequest.run > > (ContextualHttpServletRequest.java:65) > > at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:37) > > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > > (ApplicationFilterChain.java:235) > > at org.apache.catalina.core.ApplicationFilterChain.doFilter > > (ApplicationFilterChain.java:206) > > at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter > > (ReplyHeaderFilter.java:96) > > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > > (ApplicationFilterChain.java:235) > > at > org.apache.catalina.core.ApplicationFilterChain.doFilter > > (ApplicationFilterChain.java:206) > > at org.apache.catalina.core.StandardWrapperValve.invoke > > (StandardWrapperValve.java:230) > > at org.apache.catalina.core.StandardContextValve.invoke > > (StandardContextValve.java:175) > > at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke > > (SecurityAssociationValve.java:179) > > at org.jboss.web.tomcat.security.JaccContextValve.invoke > > (JaccContextValve.java:84) > > at org.apache.catalina.core.StandardHostValve.invoke > > (StandardHostValve.java:128) > > at org.apache.catalina.valves.ErrorReportValve.invoke > > (ErrorReportValve.java:104) > > at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke > > > (CachedConnectionValve.java:157) > > at org.apache.catalina.core.StandardEngineValve.invoke > > (StandardEngineValve.java:109) > > at org.apache.catalina.connector.CoyoteAdapter.service > > (CoyoteAdapter.java:241) > > at org.apache.coyote.http11.Http11Processor.process > > (Http11Processor.java:844) > > at > > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process > > (Http11Protocol.java:580) > > at org.apache.tomcat.util.net.JIoEndpoint
[rules-users] Problem drools-ant 4.0.2
I try to generate a pkg file from a drl file so , i'm using drools-ant task (version 4.0.2) when i load my pkg file, there's a classcast exception: java.lang.ClassCastException: org.drools.reteoo.ReteooRuleBase cannot be cast to org.drools.rule.Package at org.drools.agent.FileScanner.readPackage(FileScanner.java:109) at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79) at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57) at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330) at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298) at org.drools.agent.RuleAgent.configure(RuleAgent.java:284) at org.drools.agent.RuleAgent.init(RuleAgent.java:208) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:148) at fr.biomerieux.qi.algo.common.inferenceengine.InferenceEngineControllerImpl.initializeRuleBaseFromPKG (InferenceEngineControllerImpl.java:128) at fr.biomerieux.qi.algorithms.testcase.inferenceengine.InferenceEngineTestCase.testInferenceEngineCase (InferenceEngineTestCase.java:52) 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:154) at junit.framework.TestCase.runBare(TestCase.java:127) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at fr.biomerieux.junit.BmxTestCase.run(BmxTestCase.java:64) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run( JUnit3TestReference.java:130) at org.eclipse.jdt.internal.junit.runner.TestExecution.run( TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests( RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests( RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run( RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main( RemoteTestRunner.java:196) ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Problem running JBRMS 4.0.3 on JBoss AS 4.2.1
Switching to AS 4.2.0 may not be an easy option for us. Much of our development product development has been done with 4.2.1. I did not have this problem with BRMS 4.0.0 running on AS 4.2.1. I should clarify that the exception is thrown when trying to login to the BRMS. If there is no resolution, is it possible to get to earlier builds (4.0.0 latest, or 4.0.1). The downloads page only lists 4.0.3. Thanks, --Aziz - Aziz I have/had the same problem under Windows NT. I never received a resolution so I just stayed with 4.2.0. It must not work with 4.2.1. Rod On Fri, Oct 26, 2007 at 09:27:23AM -0700, Aziz Boxwala wrote: > I cannot get the BRMS to run on JBoss AS 4.2.1. (on Windows Vista). > > Any help/hints to fix this will be appreciated. This is the error I get: > > 12:19:03,577 INFO [STDOUT] ERROR 26-10 12:19:03,576 > (Contexts.java:flushAndDestroyContexts:335) could not discover > transaction status > 12:19:03,579 INFO [STDOUT] ERROR 26-10 12:19:03,578 > (StandardWrapperValve.java:invoke:278) Servlet.service() for s > ervlet default threw exception > java.lang.IllegalStateException: Cannot create a session after the response > has > been committed > at org.apache.catalina.connector.Request.doGetSession > (Request.java:2284) > at org.apache.catalina.connector.Request.getSession(Request.java:2066) > at org.apache.catalina.connector.RequestFacade.getSession > (RequestFacade.java:833) > at org.jboss.seam.servlet.ServletRequestSessionMap.put > (ServletRequestSessionMap.java:87) > at org.jboss.seam.servlet.ServletRequestSessionMap.put > (ServletRequestSessionMap.java:25) > at org.jboss.seam.contexts.BasicContext.set(BasicContext.java:80) > at org.jboss.seam.Component.newInstance(Component.java:1980) > at org.jboss.seam.Component.getInstance(Component.java:1878) > at org.jboss.seam.Component.getInstance(Component.java:1857) > at org.jboss.seam.Component.getInstance(Component.java:1834) > at org.jboss.seam.web.Session.getInstance(Session.java:122) > at org.jboss.seam.contexts.Contexts.flushAndDestroyContexts > (Contexts.java:375) > at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:132) > at org.jboss.seam.servlet.ContextualHttpServletRequest.run > (ContextualHttpServletRequest.java:65) > at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:37) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > (ApplicationFilterChain.java:235) > at org.apache.catalina.core.ApplicationFilterChain.doFilter > (ApplicationFilterChain.java:206) > at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter > (ReplyHeaderFilter.java:96) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > (ApplicationFilterChain.java:235) > at org.apache.catalina.core.ApplicationFilterChain.doFilter > (ApplicationFilterChain.java:206) > at org.apache.catalina.core.StandardWrapperValve.invoke > (StandardWrapperValve.java:230) > at org.apache.catalina.core.StandardContextValve.invoke > (StandardContextValve.java:175) > at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke > (SecurityAssociationValve.java:179) > at org.jboss.web.tomcat.security.JaccContextValve.invoke > (JaccContextValve.java:84) > at org.apache.catalina.core.StandardHostValve.invoke > (StandardHostValve.java:128) > at org.apache.catalina.valves.ErrorReportValve.invoke > (ErrorReportValve.java:104) > at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke > (CachedConnectionValve.java:157) > at org.apache.catalina.core.StandardEngineValve.invoke > (StandardEngineValve.java:109) > at org.apache.catalina.connector.CoyoteAdapter.service > (CoyoteAdapter.java:241) > at org.apache.coyote.http11.Http11Processor.process > (Http11Processor.java:844) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process > (Http11Protocol.java:580) > at org.apache.tomcat.util.net.JIoEndpoint$Worker.run > (JIoEndpoint.java:447) > at java.lang.Thread.run(Thread.java:595) > > Thanks, > --Aziz > > ___ > rules-users mailing list > rules-users at lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
RE: [rules-users] RE: JavaConsequenceBuilder.buildNullPointerException
Sure. Thanks
package validActions;
import myPackage.domain.leader.LeaderImpl;
import myPackage.domain.location.LocationImpl;
import myPackage.domain.leader.LeaderTypeImpl;
import myPackage.rivoli.service.rules.RuleResult;
rule "leaders in same location"
salience 10
when
$result : RuleResult(rulesPassed not contains "leaders in same
location")
$loc : LocationImpl()
$leaderName : String()
$leader1 : LeaderImpl(name == $leaderName, location == $loc)
$leader2 : LeaderImpl(name != $leaderName, this != $leader1,
location == $loc)
then
$result.addPassedRule(leaders in same location);
update($result);
end
rule "leaders king and heir"
salience 10
when
$result : RuleResult(rulesPassed not contains "leaders king and
heir")
$leaderName : String()
$king : LeaderTypeImpl(name == "King")
$heir : LeaderTypeImpl(name == "Heir")
$leader1 : LeaderImpl(name == $leaderName, leaderType == $king)
$leader2 : LeaderImpl(name != $leaderName, this != $leader1,
leaderType == $heir)
then
$result.addPassedRule("leaders king and heir");
update($result);
end
rule "leader in capital"
salience 10
when
$result : RuleResult(rulesPassed not contains "leader in capital")
$loc : LocationImpl(capital == true)
$leader1 : LeaderImpl(location == $loc)
then
$result.addPassedRule("leader in capital");
update($result);
end
rule "leader in homeland"
salience 10
when
$result : RuleResult(rulesPassed not contains "leader in homeland")
$loc : LocationImpl(homeland == true)
$leader1 : LeaderImpl(location == $loc)
then
$result.addPassedRule("leader in homeland");
update($result);
end
rule "abdication allowed"
when
$result : RuleResult (rulesPassed not contains "abdication allowed"
&& rulesPassed contains "leaders in same location"
&& rulesPassed contains "leaders king and heir")
then
$result.addPassedRule("abdication allowed");
update($result);
end
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Edson Tirelli
Sent: Tuesday, October 30, 2007 2:31 PM
To: Rules Users List
Subject: Re: [rules-users] RE:
JavaConsequenceBuilder.buildNullPointerException
Michael,
Can you show us your rule(s) please? it is raising the NPE when
trying to get the list of variables you use in the consequence... as
soon as we determine what the real problem is, I can fix the error
message...
[]s
Edson
2007/10/30, Michael Fuller <[EMAIL PROTECTED]>:
I have the following code: (note String[] ruleFiles contains only one
string)
public class Engine {
private static RuleBase ruleBase;
public void start(String[] ruleFiles) throws Exception {
PackageBuilderConfiguration cfg = new
PackageBuilderConfiguration();
JavaDialectConfiguration javaConf = (JavaDialectConfiguration)
cfg.getDialectConfiguration("java");
javaConf.setCompiler(JavaDialectConfiguration.ECLIPSE);
PackageBuilder builder = new PackageBuilder(cfg);
for (String file : ruleFiles) {
builder.addPackageFromDrl(new
InputStreamReader(ClassLoader.getSystemResourceAsStream(file)));
}
Package pkg = builder.getPackage();
PackageBuilderErrors errors = builder.getErrors();
if (errors.getErrors().length != 0) {
// do something
}
RuleBaseConfiguration conf = new RuleBaseConfiguration();
conf.setAssertBehaviour(RuleBaseConfiguration.AssertBehaviour.EQUALITY);
ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(pkg);
ruleBase.newStatefulSession(false);
}
}
At the builder.addPackageFromDrl(new
InputStreamReader(ClassLoader.getSystemResourceAsStream(file))); line
I'm getting the following exception:
java.lang.NullPointerException
at
org.drools.rule.builder.dialect.java.JavaConsequenceBuilder.build(JavaCo
nsequenceBuilder.java:54)
at
org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:67)
at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:446)
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java
:167)
at
myPackage.rivoli.service.rules.Engine.start(Engine.java:33)
at
myPackage.rivoli.rules.LeaderKingAndHeirTest.setUp(LeaderKingAndHeirTest
.java:26)
at
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)
at
com.intellij.rt.execution.application.AppM
Re: [rules-users] Using java.util.List in rules
Do you know why? *
=)
2007/10/30, Anderson Pazza Mello <[EMAIL PROTECTED]>:
>
> Yes I'm Brazilian
> I need to improve my english I now hehehe
>
> About the problem... I solved it.
>
> But now I'm getting this error when I use a static property in the rules:
>
> Exception in thread "AWT-EventQueue-0" org.drools.RuntimeDroolsException:
> Exception executing predicate
> [EMAIL PROTECTED]
> at org.drools.rule.PredicateConstraint.isAllowed(
> PredicateConstraint.java:197)
> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:70)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:29)
> at org.drools.reteoo.EvalConditionNode.assertTuple(
> EvalConditionNode.java:150)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple (
> SingleTupleSinkAdapter.java:20)
> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at org.drools.reteoo.FromNode.assertTuple (FromNode.java:87)
> at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(
> SingleTupleSinkAdapter.java:20)
> at org.drools.reteoo.FromNode.assertTuple(FromNode.java:87)
> .
> .
> .
>
> Caused by: org.mvel.PropertyAccessException: unable to resolve property:
> unable to resolve token: TipoCaracteristica.CABELO_TOTALMENTE_CALVO
> at org.mvel.ast.PropertyASTNode.initializePropertyNode(
> PropertyASTNode.java:86)
> at org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(
> PropertyASTNode.java :23)
> at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(
> BinaryOperation.java:20)
> at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
> at org.mvel.CompiledExpression.getValue(CompiledExpression.java:99)
> at org.mvel.MVEL.executeExpression(MVEL.java:219)
> at org.drools.base.mvel.MVELPredicateExpression.evaluate (
> MVELPredicateExpression.java:36)
> at org.drools.rule.PredicateConstraint.isAllowed(
> PredicateConstraint.java:191)
> ... 44 more
>
> Example:
>
> Property :
> public class TipoCaracteristica implements java.io.Serializable{
> .
> .
>
> public static int CABELO_TOTALMENTE_CALVO = 37;
> .
> .
> .
> }
>
> rule:
>
> rule "CABELO_TOTALMENTE_CALVO resposta nao / Chama Tipo de Cabelo"
> salience 90
> when
> e : Especialista(perguntado == false)
> Especialista( $retrato : retratoUser)
> Retrato($lstCaracRetrato : lstCarac) from $retrato
> Retrato($lstMolde : lstMolde) from $retrato
> Molde(tipoMolde.codTipMolde == TipoMolde.CABELO && $lstCaracMolde:
> lstCarac) from $lstMolde
> //CABELO_TIPO = 10
> eval(naoPerguntou($lstCaracMolde, 10))
> //CABELO_TOTALMENTE_CALVO = 37 e RESPOSTA_SIM = 154
> Caracteristica(tipCarac.codTipCarac ==
> TipoCaracteristica.CABELO_TOTALMENTE_CALVO && valor.codValor == 154) from
> $lstCaracMolde
> then
> buscarMontarPergunta(e,Pergunta.CABELO_TIPO,Especialista.CABELO);
> e.perguntado = true;
> update(e);
> end
>
> I get some statics properties like "TipoMolde.CABELO" without errors, but
> I can't use the properties from this class (TipoCaracteristica). Did you
> know why?
> If I use de value like this " valor.codValor == 154", I have no problem.
>
> 2007/10/29, Edson Tirelli <[EMAIL PROTECTED]>:
> >
> >
> > Anderson,
> >
> > What is the error? Can you provide a self contained example?
> > Using the "from CE" as showed before works.
> >
> > BTW, are you Brazilian? Your name sounds like a Brazilian name.
> >
> > []s
> > Edson
> >
> > 2007/10/27, Anderson Pazza Mello <[EMAIL PROTECTED] >:
> > >
> > > How can I test all elements of the list?
> > > Can I need to use something like "for (int i.)"?
> > >
> > > I'm trying to do that but it is not working...
> > >
> > > "Caracteristica( codCarac != 0 ) from $caracList"
> > >
> > >
> > >
> > > My test:
> > >
> > > e : Especialista (perguntado == false)
> > > Especialista( $moldeList : retratoUser.lstMolde )
> > > Molde( tipoMolde == TipoMolde.CABELO) from $moldeList
> > >
> > >
> > > When the property "tipoMolde == TipoMolde.CABELO" the rule must to
> > > be fired. The List $moldeList has 5 elements.
> > >
> > > any idea?
> > >
> > >
> > > 2007/10/3, Edson Tirelli < [EMAIL PROTECTED]>:
> > > >
> > > > Use the "from" CE:
> > > >
> > > > rule "This rule will fire once for each Caracteristica whose
> > > > codCarac is != 0"
> > > > when
> > > > Especialista( $caracList : retratoUser.lstCarac )
> > > > Caracteristica( codCarac != 0 ) from $caracList
> > > > then
> > > > ...
> > > > end
> > > >
> > > >[]s
> > > >Edson
> > > >
> > > > 2007/10/3, Bhattacharya, Sougata <
> > > > [EMAIL PROTECTED]>:
> > > > >
> > > > > If I want to test for all ith element,
> > > > >
> > > > > Like this
> > > > >
> > > > >
> > > > >
> > > > > rule "Test"
> > > > >
> >
[rules-users] DroolsTab annoncement
Hello rules-users, DroolsTab (former JBRSTab) - DROOLS BASED SPATIAL SCENARIO SIMULATION PLUG-IN TO PROTEGE - published on http://oogis.ru/component/ option,com_remository/Itemid,34/func,fileinfo/id,2/lang,en/ New features: - Drools 4 rule engine support - Parallel tasks instead of sequential phases in scenarios - new exciting examples with accent on rule sets authoring Sincerely, Ru Ruslan P. Sorokin [EMAIL PROTECTED] OOGIS RLhttp://www.oogis.ru SPIIRAS http://www.spiiras.nw.ru St.Petersburg Russia ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
RE: [rules-users] Problem with DSL in Drools 4.0.3
Can you provide your DRL and DSL?
Have you included a reference to "expander" in your DRL?
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of tansey
Sent: 31 October 2007 07:55
To: rules-users@lists.jboss.org
Subject: [rules-users] Problem with DSL in Drools 4.0.3
I'm new to Drools, and I've setup the latest version of it in Eclipse 3.2.
I'm having trouble whenever I try to use a DSL though. I took the standard
Hello World example and added the 'mylang.dsl' file, and changed the lines
in DroolsTest.readRule() as follows:
private static RuleBase readRule() throws Exception {
//read in the source
Reader source = new InputStreamReader(
DroolsTest.class.getResourceAsStream( "/Sample.drl" ) );
//optionally read in the DSL (if you are using it).
Reader dsl = new InputStreamReader(
DroolsTest.class.getResourceAsStream(
"/mylang.dsl" ) );
//Use package builder to build up a rule package.
//An alternative lower level class called "DrlParser" can
also be used...
PackageBuilder builder = new PackageBuilder();
//this wil parse and compile in one step
//NOTE: There are 2 methods here, the one argument one is
for normal DRL.
//builder.addPackageFromDrl( source );
//Use the following instead of above if you are using a DSL:
builder.addPackageFromDrl( source, dsl );
//get the compiled package (which is serializable)
Package pkg = builder.getPackage();
//add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage( pkg );
return ruleBase;
}
Even if I remove all rules from the dsl file, it still gives me the same
error:
org.drools.rule.InvalidRulePackage:
[4] Unable to expand: m : Message( status == Message.HELLO, message :
message )
[6] Unable to expand: System.out.println( message );
[7] Unable to expand: m.setMessage( "Goodbye cruel world" );
[8] Unable to expand: m.setStatus( Message.GOODBYE );
[9] Unable to expand: update( m );
[5] Unable to expand: m : Message( status == Message.GOODBYE, message :
message )
[7] Unable to expand: System.out.println( message );
[8] Unable to expand: m.setMessage( message );
at org.drools.rule.Package.checkValidity(Package.java:424)
at
org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:361)
at com.sample.DroolsTest.readRule(DroolsTest.java:64)
at com.sample.DroolsTest.main(DroolsTest.java:21)
Anyone have an idea of what's wrong?
--
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597
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TR : RE : [rules-users] How to dump the clas s/src generated by .drl file?
Hi, I'm currently using Jboss Rules in it's 3.0.6 version, and I can't find the JavaRuleClassBuilder class, is anyone have an idea to recover the generated class from dsl & Drl file? (So helpfull for debugging ^_^). Thanks Olivier De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de Mark Proctor Envoyé : mardi 7 août 2007 12:27 À : Rules Users List Objet : Re: [rules-users] How to dump the class/src generated by .drl file? There is no standard api for this, you would have to get your hands dirty with the source. Look at JavaRuleClassBuilder and you can see where to put your printouts. Mark Yang Song wrote: Greetings everyone, Does anyone know how to dump the class generated from .drl file to disk? Or even better if the generated Java source file can be dumped? Looking for some hints here, I got a NPE when firing the rules. However, it is really hard to find out why the NEP was thrown... If I can have the dumped class file, then I can be disassemble it back to Java code. To debug this rule in Eclipse is a bit difficult here, because the project is a little "big" and we usually use logging to do debugging... java.lang.NullPointerException at monitor.Rule_ftp_other_host_alarm_0.consequence(Rule_ftp_other_host_alarm_0.java:23) at monitor.Rule_ftp_other_host_alarm_0ConsequenceInvoker.evaluate(Rule_ftp_other_host_alarm_0ConsequenceInvoker.java:26) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509) at org.drools.common.AbstractWorkingMemory.fireAllRules (AbstractWorkingMemory.java:430) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:392) at com.monitor.ruleengine.InferenceMachine.fireAllRules(InferenceMachine.java:400) at com.monitor.ruleengine.InferenceMachine.run(InferenceMachine.java:314) at java.lang.Thread.run(Thread.java:595) Thanks very much, Yang ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Problem with DSL in Drools 4.0.3
I'm new to Drools, and I've setup the latest version of it in Eclipse 3.2.
I'm having trouble whenever I try to use a DSL though. I took the standard
Hello World example and added the 'mylang.dsl' file, and changed the lines
in DroolsTest.readRule() as follows:
private static RuleBase readRule() throws Exception {
//read in the source
Reader source = new InputStreamReader(
DroolsTest.class.getResourceAsStream( "/Sample.drl" ) );
//optionally read in the DSL (if you are using it).
Reader dsl = new InputStreamReader(
DroolsTest.class.getResourceAsStream(
"/mylang.dsl" ) );
//Use package builder to build up a rule package.
//An alternative lower level class called "DrlParser" can also
be used...
PackageBuilder builder = new PackageBuilder();
//this wil parse and compile in one step
//NOTE: There are 2 methods here, the one argument one is for
normal DRL.
//builder.addPackageFromDrl( source );
//Use the following instead of above if you are using a DSL:
builder.addPackageFromDrl( source, dsl );
//get the compiled package (which is serializable)
Package pkg = builder.getPackage();
//add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage( pkg );
return ruleBase;
}
Even if I remove all rules from the dsl file, it still gives me the same
error:
org.drools.rule.InvalidRulePackage:
[4] Unable to expand: m : Message( status == Message.HELLO, message :
message )
[6] Unable to expand: System.out.println( message );
[7] Unable to expand: m.setMessage( "Goodbye cruel world" );
[8] Unable to expand: m.setStatus( Message.GOODBYE );
[9] Unable to expand: update( m );
[5] Unable to expand: m : Message( status == Message.GOODBYE, message :
message )
[7] Unable to expand: System.out.println( message );
[8] Unable to expand: m.setMessage( message );
at org.drools.rule.Package.checkValidity(Package.java:424)
at
org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:361)
at com.sample.DroolsTest.readRule(DroolsTest.java:64)
at com.sample.DroolsTest.main(DroolsTest.java:21)
Anyone have an idea of what's wrong?
--
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