date:20090716

Re: [rules-users] Drools Govnor DB configuration

2009-07-16 Thread Pardeep . Ruhil

Hi,
Thanks Jarek for your reply. 
Still I have one doubt in my mind, how can I see the data for a newly 
registered user (i.e name & permission )
created through Drools Guvnor  administrator functionality.  Where should 
I find the new user data(i.e. name  & permission assigned) , so that 
I can write synch service to synch data from Drools Guvnor table to OFBiz 
table.

Please help me to through out from this problem.

Thanks & Regards

Pardeep Ruhil
L&T Infotech Ltd
Mumbai
Ph: +919820283884

pardeep.ru...@lntinfotech.com wrote:
> 
> Hi,
> I am using Apache OFBiz and had successfully integrated Drools Guvnor 
> war file with OFBiz.
> By default Drools Guvnor supports Embedded derby, but in OFBiz i am 
> using MYSql , so i changed
> the default embedded derby to MySql using repository.xml file by the 
> following code.
> 
>  
class="org.apache.jackrabbit.core.persistence.bundle.MySqlPersistenceManager"> 

> 
>value="jdbc:mysql://localhost:3306/drools"/>
>   
>   
>   
>   
> 
> 
> Using this I successfully integrated Drools guvnor with same database as 

> I am using for OFBiz(MySql).
> 
> Now I have created a new user in Drools guvnor to create permission for 
> that user, but I am not able to see
> where that username is stored in the database and in which entity or 
> table of MySql.
> 
> Also if i want to use the users available in OFBiz MySql database 
>  entity say 'Userlogin' where i am storing all the list of userlogins, 
> how can
> I retrieve the same and use this table data in drools Guvnor.

This can be done via JAAS - you just need to configure it to use a 
particular table in mysql for retrieving user logins/passwords.
Keep in mind that this is just for authentication (to login).
Here's a list of all available login modules:
http://www.jboss.org/community/wiki/LoginModule
http://www.jboss.org/community/wiki/DatabaseServerLoginModule

> Also when 
> I make a new user in Drools Govnor through
> administrator, my data of new user should go to  table 'UserLogin'.

AFAICT that's not possible and you need to synch your Guvnor user list 
with the OFBiz user list by yourself.

Cheers,
  Jarek
> 
> Please help me how this can be achieved in Drools Guvnor.
> 
> Thanks & Regards
> 
> Pardeep Ruhil
> L&T Infotech Ltd
> Mumbai
> Ph: +919820283884
> *
> Larsen & Toubro Infotech Ltd.*_
> __www.Lntinfotech.com_ 
> 
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> 
> L&T Infotech Proprietary   L&T Infotech Confidential   L&T Infotech 
> Internal Use Only   L&T Infotech General Business 
> 
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[rules-users] Visu Nageswaran is out of the office.

2009-07-16 Thread Viswanathan Nageswaran


I will be out of the office starting  17/07/2009 and will not return until
18/07/2009.

I am in a training today. Response to emails would be delayed. For anything
urgent, please call at +91-9884702390.

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Re: [rules-users] Using variables as map keys in MVEL in LHS

2009-07-16 Thread Steve Ronderos

Thanks Edson, worked like a charm!

Steve Ronderos

rules-users-boun...@lists.jboss.org wrote on 07/16/2009 09:09:31 AM:

> [image removed] 
> 
> Re: [rules-users] Using variables as map keys in MVEL in LHS
> 
> Edson Tirelli 
> 
> to:
> 
> Rules Users List
> 
> 07/16/2009 09:11 AM
> 
> Sent by:
> 
> rules-users-boun...@lists.jboss.org
> 
> Please respond to Rules Users List
> 
> 
>This was a bug in one of the MVEL versions that is fixed. Can you
> update your MVEL jar to one of the latest releases? I think it is 
2.0.12.
> 
>[]s
>Edson

> 2009/7/16 Steve Ronderos 
> 
> Hello, 
> 
> Again, I'm working on converting my project that used Drools 4.0.7 to 
5.0.1. 
> 
> I've run across a problem with a rule that accesses a map in the LHS
> using a variable as the key.  When MVEL tries to resolve this, it 
> appears that it is not evaluating the variable before accessing the 
> map.  I've modified the Shopping example from the Drools 5.0.1 
> Examples to recreate the issue in a simpler setting. 
> 
> This is the rule (I removed all the other rules for this example) 
> rule "Cart notification" 
> salience 10 
> 
> when 
> $p : Product( $productName : name) 
> $c : Customer( cart[$productName] == $p)   
> then 
> System.out.println( "Customer " + $c.name + " has " + $p.name
> + " in cart"); 
> end   
> 
> I added the following to the Customer class: 
> 
> private Map cart = new HashMap(); 
> public Map getCart() { 
> return cart; 
> } 
> 
> and I modified the main method to be: 
> 
> public static final void main(String[] args) throws Exception { 
> final KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.
> newKnowledgeBuilder(); 
> kbuilder.add( ResourceFactory.newClassPathResource( 
> "Shopping.drl", ShoppingExample.class ), 
>   ResourceType.DRL ); 
> 
> final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); 

> kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() ); 
> 
> final StatefulKnowledgeSession ksession = 
> kbase.newStatefulKnowledgeSession(); 
> 
> Customer mark = new Customer( "mark", 
>   0 ); 
> ksession.insert( mark ); 
> 
> Product shoes = new Product( "shoes", 
>  60 ); 
> ksession.insert( shoes ); 
> 
> mark.getCart().put("shoes", shoes); 
> 
> ksession.fireAllRules(); 
> } 
> 
> So basically, I added a map to Customer, inserted one item and made 
> a rule that will use a variable as a key for that map.   
> What I would expect to happen is: 
>   the Product pattern would match the shoes Product that is inserted
> into the ksession, the $productName variable would contain the value 
"shoes" 
>   the Customer fact, mark, would be matched with the second pattern 
> in the rule because cart["shoes"] should resolve to the shoes fact 
> which is $p in the rule 
>   The message should print 
> 
> What actually happens is an error message: 
> 
> Exception in thread "main" org.drools.RuntimeDroolsException: 
> Exception executing predicate cart[$productName] == $p 
> at org.drools.rule.PredicateConstraint.isAllowedCachedLeft(
> PredicateConstraint.java:302) 
> at org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(
> SingleBetaConstraints.java:138) 
> at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:114) 

> at 
> org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(
> SingleLeftTupleSinkAdapter.java:117) 
> at 
> 
org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple
> (SingleLeftTupleSinkAdapter.java:78) 
> at org.drools.reteoo.LeftInputAdapterNode.assertObject(
> LeftInputAdapterNode.java:142) 
> at 
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(
> SingleObjectSinkAdapter.java:42) 
> at org.drools.reteoo.ObjectTypeNode.assertObject(
> ObjectTypeNode.java:185) 
> at org.drools.reteoo.EntryPointNode.assertObject(
> EntryPointNode.java:146) 
> at org.drools.common.AbstractWorkingMemory.insert(
> AbstractWorkingMemory.java:1046) 
> at org.drools.common.AbstractWorkingMemory.insert(
> AbstractWorkingMemory.java:1001) 
> at org.drools.common.AbstractWorkingMemory.insert(
> AbstractWorkingMemory.java:788) 
> at org.drools.impl.StatefulKnowledgeSessionImpl.insert(
> StatefulKnowledgeSessionImpl.java:216) 
> at 
org.drools.examples.ShoppingExample.main(ShoppingExample.java:32) 
> Caused by: [Error: unable to resolve method: java.util.HashMap.
> $productName() [arglength=0]] 
> [Near : {... Unknown }] 
>  ^ 
> [Line: 1, Column: 0] 
> at 
> org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(
> ReflectiveAccessorOptimizer.java:906) 
> at 
> 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(
> ReflectiveAccessorOptimizer.java:585)

Re: [rules-users] StatefulKnowledgeSession leaves threads running

2009-07-16 Thread Greg Barton


I have seen similar behavior, though at the time I didn't have the opportunity 
to investigate the cause. (Sorry about not reporting it at the time.) Unlike 
the code below it was while calling session.fireUntilHalt(). (In a seperate 
thread.)  After calling session.halt() from another thread the fireUntilHalt() 
would exit, but the VM would not exit due to a non-daemon thread persisting.

--- On Thu, 7/16/09, Rafael Ribeiro  wrote:

> From: Rafael Ribeiro 
> Subject: Re: [rules-users] StatefulKnowledgeSession leaves threads running
> To: "Rules Users List" 
> Date: Thursday, July 16, 2009, 12:10 PM
> Hi Edson!
> 
>  as I've already mentioned I've modified the
> sample so, if you get the StockTick sample and replace the
> Main class this will run fine.
>  The sample shuts down fine but as I saw it sets the
> JFrame uses frame.setDefaultCloseOperation(
> WindowConstants.EXIT_ON_CLOSE ); which in turn makes the
> trick.
> 
> 
>  Below the code of my modified main class:
> 
> package org.drools.examples.broker;
> 
> 
> import org.drools.KnowledgeBase;
> import org.drools.KnowledgeBaseConfiguration;
> import org.drools.KnowledgeBaseFactory;
> 
> import org.drools.builder.KnowledgeBuilder;
> import org.drools.builder.KnowledgeBuilderFactory;
> import org.drools.builder.ResourceType;
> import org.drools.conf.EventProcessingOption;
> import org.drools.examples.broker.model.Company;
> 
> import org.drools.examples.broker.model.CompanyRegistry;
> import org.drools.examples.broker.model.StockTick;
> import org.drools.io.ResourceFactory;
> import org.drools.runtime.StatefulKnowledgeSession;
> import org.drools.runtime.rule.WorkingMemoryEntryPoint;
> 
> 
> public class Main {
>     private static final String RULES_FILE =
> "/broker.drl";
>     static StatefulKnowledgeSession session;
>     static WorkingMemoryEntryPoint tickStream;
> 
>     /**
>  * @param args
> 
>  */
>     public static void main(String[] args) throws
> Exception {
>     // set up and show main window
>     
>     CompanyRegistry companies = new
> CompanyRegistry();
>     
>     KnowledgeBuilder builder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> 
>     try {
>     builder.add(
> ResourceFactory.newInputStreamResource(
> Main.class.getResourceAsStream( RULES_FILE ) ),
> 
> ResourceType.DRL);
>     } catch ( Exception e ) {
>     e.printStackTrace();
> 
>     }
>     if( builder.hasErrors() ) {
>    
> System.err.println(builder.getErrors());
>     System.exit( 0 );
>     }
> 
>     KnowledgeBaseConfiguration conf =
> KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
> 
>     conf.setOption( EventProcessingOption.STREAM
> );
>     KnowledgeBase kbase =
> KnowledgeBaseFactory.newKnowledgeBase( conf );
>     kbase.addKnowledgePackages(
> builder.getKnowledgePackages() );
>     
> 
>     session =
> kbase.newStatefulKnowledgeSession();
> 
>     session.setGlobal( "services", new
> BrokerServices() {
>             public void log(String message) {
>                
> System.out.println(message);                
> 
>             }
>     });
> 
>     for( Company company :
> companies.getCompanies() ) {
>     session.insert( company );
>     }
>     session.fireAllRules();
>     
>     tickStream =
> session.getWorkingMemoryEntryPoint( "StockTick
> stream" );
> 
>  
>     for (int i=10;i>0;i--) {
>         tickStream.insert(new
> StockTick("RHT", i*10,
> System.currentTimeMillis()));
>     session.getAgenda().getAgendaGroup(
> "evaluation" ).setFocus();
> 
>     session.fireAllRules();
>     }
>     session.dispose();
>     session.halt();
>     System.out.println("Still
> running...");
>     }
>     
> }
> 
> 
> regards,
> Rafael Ribeiro
> 
> 
> 2009/7/16 Edson Tirelli 
> 
> 
>    Hi Rafael,
> 
>    Are you setting the MultithreadEvaluation option or is
> this using default options? Do you have an example code that
> shows this behavior?
> 
>    Thanks,
>  Edson
> 
> 
> 
> 2009/7/16 Rafael Ribeiro 
> 
> 
> 
> 
> Hi all,
> 
> 
> 
>  I've downloaded Drools fusion sample and started to
> make some changes to
> 
> the code (first of all wipe out the UI so I can test it
> easier).
> 
>  I tried to get to a minimal set so I can run a console
> main class and see
> 
> what happens but I am facing a strange behaviour.
> 
>  As soon as I start pushing events into the
> WorkingMemoryEntryPoint
> 
> ("StockTick stream") a Thread - not daemonized
> since it blocks shutdown from
> 
> ending - is spawned and this prevents my JVM from shutting
> down (obviously
> 
> if I call System.exit(0) it will but I am avoiding this).
> 
>  I've tried both to halt and dispose the session that
> this entry point
> 
> belongs but with no success. Does anyone know how could I
> get rid of this
> 
> thread?
> 
> 
> 
> best regards,
> 
> --
> 
> 
> 
> 
>

Re: [rules-users] Drools Govnor DB configuration

2009-07-16 Thread James Owen

Note: I did ask permission before sending this notice to the Drools Developers and Drools Users Groups. Greetings:As both Edson Tirelli and Mark Proctor are presenting two great talks at October Rules Fest (http://www.OctoberRulesFest.org) this year, I thought it might be appropriate to let everyone know about the details. We will have no less than three presentations on CEP (Edson Tirelli, Paul Vincent of Tibco and Luke Voss ) so it should be a really great time for techies of this unique little world of rulebased programmers. Two of the talks have to do with complex implementations of a rulebased system. Dr. Forgy has promised to discuss (in addition to his parallel rulebase presentation) his new Tech algorithm that is 10 times faster than Rete 2 or Rete III. In addition we will have Dr. Forgy (Rete, Rete 2, Rete III, Tech)Gary Riley (CLIPS inventor)John Zachman (Enterprise Architecture guru)Dr. Hafedh Mili (wrote all of the early JRules tutorial manuals)Mark Proctor (Drools Inventor)Dr. Richard Hicks (Validation and Verification guru)Dr. Daniel Levine (One of the Neural Net Godfathers)Daniel Brookshier (UML -> Rules inventor)Carole Ann Berlioz-Matignon & Carlos Serrano-Morales (Advisor inventors)Dr. Jacob Feldman (Open Rules inventor)Jason Morris (Jess Answer Man)Luke Voss (former JPL guru)Remember three things: (1) The Early Bird Discount for the October Rules Fest expires at the end of July. (2) There are a limited number of hotel rooms blocked off so, unless you register early, you won't be guaranteed a hotel room. (3) There are a limited number of seats this year so unless you register early there is no guarantee that you will be able to register. Now, the good stuff: We have been blessed with three things that make for a GOOD conference. Four things that make for a GREAT conference. Five things that make for an INSANELY GREAT conference. Six things that make... I just don't have the words for the sixth and seventh thing.1. Great Sponsors 2 Diamond (FICO, No Magic) 2 Gold (PST, KBSC) 1 Silver (Drools) 1 Bronze (BizRules)2. Great Speakers see those above3. Great Meeting Place The BEST Hotel in Texas, The Adolphus in Dallas Located in the middle of the restaurant district of Downtown Dallas 4. Great Attendees Uber-geeks, techies, super-nerds, CTOs, CEOs, (and all of the other terms that drive Jason up the wall) Business Analysts, Programmers, Research guys, Ph.D. Candidates, University Professors HR guys looking for rulebase engineers?5. White Papers will be published after the conference in a collection available either bound, printed format and/or online after the conference.6. Videos will be done properly this year by Greg Barton and Chelanie Israel such that the author will be talking at one corner of the screen and the presentation on the other side of the screen. (Very similar to what you see at parlays.com) These will be available after the conference with a password given at the conference itself or shortly thereafter. 7. Conference Presentations (PPTs or PDFs) will be available both during and after the conference with the assigned password for access during and after the conference.8. Great Location for food! The conference is located in the middle of the restaurant district of downtown Dallas and we will have listing of some of the ones that we know about.SDGJames C. OwenCo-Founder October Rules Festhttp://www.kbsc.comhttp://www.OctoberRulesFest.org"This above all: to thine own self be true,And it must follow, as the night the day,Thou canst not then be false to any man."Hamlet, Act 1, Scene IIIhttp://www-tech.mit.edu/Shakespeare/hamlet/hamlet.1.3.html[You can also replyTo: j...@kbsc.com]___
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Re: [rules-users] StatefulKnowledgeSession leaves threads running

2009-07-16 Thread Rafael Ribeiro

Hi Edson!

 as I've already mentioned I've modified the sample so, if you get the
StockTick sample and replace the Main class this will run fine.
 The sample shuts down fine but as I saw it sets the JFrame uses
frame.setDefaultCloseOperation( WindowConstants.EXIT_ON_CLOSE ); which in
turn makes the trick.

 Below the code of my modified main class:

package org.drools.examples.broker;


import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseConfiguration;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.conf.EventProcessingOption;
import org.drools.examples.broker.model.Company;
import org.drools.examples.broker.model.CompanyRegistry;
import org.drools.examples.broker.model.StockTick;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.rule.WorkingMemoryEntryPoint;

public class Main {
private static final String RULES_FILE = "/broker.drl";
static StatefulKnowledgeSession session;
static WorkingMemoryEntryPoint tickStream;

/**
 * @param args
 */
public static void main(String[] args) throws Exception {
// set up and show main window

CompanyRegistry companies = new CompanyRegistry();

KnowledgeBuilder builder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
try {
builder.add( ResourceFactory.newInputStreamResource(
Main.class.getResourceAsStream( RULES_FILE ) ),
 ResourceType.DRL);
} catch ( Exception e ) {
e.printStackTrace();
}
if( builder.hasErrors() ) {
System.err.println(builder.getErrors());
System.exit( 0 );
}

KnowledgeBaseConfiguration conf =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
conf.setOption( EventProcessingOption.STREAM );
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( conf );
kbase.addKnowledgePackages( builder.getKnowledgePackages() );

session = kbase.newStatefulKnowledgeSession();

session.setGlobal( "services", new BrokerServices() {
public void log(String message) {
System.out.println(message);
}
});

for( Company company : companies.getCompanies() ) {
session.insert( company );
}
session.fireAllRules();

tickStream = session.getWorkingMemoryEntryPoint( "StockTick stream"
);

for (int i=10;i>0;i--) {
tickStream.insert(new StockTick("RHT", i*10,
System.currentTimeMillis()));
session.getAgenda().getAgendaGroup( "evaluation" ).setFocus();
session.fireAllRules();
}
session.dispose();
session.halt();
System.out.println("Still running...");
}

}


regards,
Rafael Ribeiro

2009/7/16 Edson Tirelli 

>
>Hi Rafael,
>
>Are you setting the MultithreadEvaluation option or is this using
> default options? Do you have an example code that shows this behavior?
>
>Thanks,
>  Edson
>
> 2009/7/16 Rafael Ribeiro 
>
>>
>> Hi all,
>>
>>  I've downloaded Drools fusion sample and started to make some changes to
>> the code (first of all wipe out the UI so I can test it easier).
>>  I tried to get to a minimal set so I can run a console main class and see
>> what happens but I am facing a strange behaviour.
>>  As soon as I start pushing events into the WorkingMemoryEntryPoint
>> ("StockTick stream") a Thread - not daemonized since it blocks shutdown
>> from
>> ending - is spawned and this prevents my JVM from shutting down (obviously
>> if I call System.exit(0) it will but I am avoiding this).
>>  I've tried both to halt and dispose the session that this entry point
>> belongs but with no success. Does anyone know how could I get rid of this
>> thread?
>>
>> best regards,
>> --
>>
>
>
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>
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Re: [rules-users] StatefulKnowledgeSession leaves threads running

2009-07-16 Thread Edson Tirelli

   Hi Rafael,

   Are you setting the MultithreadEvaluation option or is this using default
options? Do you have an example code that shows this behavior?

   Thanks,
 Edson

2009/7/16 Rafael Ribeiro 

>
> Hi all,
>
>  I've downloaded Drools fusion sample and started to make some changes to
> the code (first of all wipe out the UI so I can test it easier).
>  I tried to get to a minimal set so I can run a console main class and see
> what happens but I am facing a strange behaviour.
>  As soon as I start pushing events into the WorkingMemoryEntryPoint
> ("StockTick stream") a Thread - not daemonized since it blocks shutdown
> from
> ending - is spawned and this prevents my JVM from shutting down (obviously
> if I call System.exit(0) it will but I am avoiding this).
>  I've tried both to halt and dispose the session that this entry point
> belongs but with no success. Does anyone know how could I get rid of this
> thread?
>
> best regards,
> --
>
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[rules-users] Question regarding Release 5.1

2009-07-16 Thread McDonald, Daniel

Hi,

Does anyone know if there is a roadmap for the next Drools release, an
anticipated, forecast, or suspected date, for Release 5.1?

 

Thank you,

 

Dan

Office phone: (972) 691-6593

Mobile phone (214) 697-8163

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Re: [rules-users] Using variables as map keys in MVEL in LHS

2009-07-16 Thread Edson Tirelli

   This was a bug in one of the MVEL versions that is fixed. Can you update
your MVEL jar to one of the latest releases? I think it is 2.0.12.

   []s
   Edson

2009/7/16 Steve Ronderos 

>
> Hello,
>
> Again, I'm working on converting my project that used Drools 4.0.7 to
> 5.0.1.
>
> I've run across a problem with a rule that accesses a map in the LHS using
> a variable as the key.  When MVEL tries to resolve this, it appears that it
> is not evaluating the variable before accessing the map.  I've modified the
> Shopping example from the Drools 5.0.1 Examples to recreate the issue in a
> simpler setting.
>
> This is the rule (I removed all the other rules for this example)
> *rule* "Cart notification"
> *salience* 10
>
> *when*
> $p : Product( $productName : name)
> $c : Customer( cart[$productName] == $p)
> *then*
> System.out.println( "Customer " + $c.name + " has " + $p.name + "
> in cart");
> *end*
>
> I added the following to the Customer class:
>
> *private* Map cart = *new* HashMap();
> *public* Map getCart() {
> *return* cart;
> }
>
> and I modified the main method to be:
>
> *public* *static* *final* *void* main(String[] args) *throws* Exception {
> *final* KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.*
> newKnowledgeBuilder*();
> kbuilder.add( ResourceFactory.*newClassPathResource*( "Shopping.drl",
> ShoppingExample.*class* ),
>   ResourceType.*DRL* );
>
> *final* KnowledgeBase kbase = KnowledgeBaseFactory.*newKnowledgeBase*
> ();
> kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
>
> *final* StatefulKnowledgeSession ksession =
> kbase.newStatefulKnowledgeSession();
>
> Customer mark = *new* Customer( "mark",
>   0 );
> ksession.insert( mark );
>
> Product shoes = *new* Product( "shoes",
>  60 );
> ksession.insert( shoes );
>
> mark.getCart().put("shoes", shoes);
>
> *ksession*.fireAllRules();
> }
>
> So basically, I added a map to Customer, inserted one item and made a rule
> that will use a variable as a key for that map.
> What I would expect to happen is:
>   the Product pattern would match the shoes Product that is inserted into
> the ksession, the $productName variable would contain the value "shoes"
>   the Customer fact, mark, would be matched with the second pattern in the
> rule because cart["shoes"] should resolve to the shoes fact which is $p in
> the rule
>   The message should print
>
> What actually happens is an error message:
>
> Exception in thread "main" *org.drools.RuntimeDroolsException*: Exception
> executing predicate cart[$productName] == $p
> at org.drools.rule.PredicateConstraint.isAllowedCachedLeft(*
> PredicateConstraint.java:302*)
> at org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(*
> SingleBetaConstraints.java:138*)
> at org.drools.reteoo.JoinNode.assertLeftTuple(*JoinNode.java:114*)
> at
> org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(*
> SingleLeftTupleSinkAdapter.java:117*)
> at
> org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(
> *SingleLeftTupleSinkAdapter.java:78*)
> at org.drools.reteoo.LeftInputAdapterNode.assertObject(*
> LeftInputAdapterNode.java:142*)
> at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(
> *SingleObjectSinkAdapter.java:42*)
> at org.drools.reteoo.ObjectTypeNode.assertObject(*
> ObjectTypeNode.java:185*)
> at org.drools.reteoo.EntryPointNode.assertObject(*
> EntryPointNode.java:146*)
> at org.drools.common.AbstractWorkingMemory.insert(*
> AbstractWorkingMemory.java:1046*)
> at org.drools.common.AbstractWorkingMemory.insert(*
> AbstractWorkingMemory.java:1001*)
> at org.drools.common.AbstractWorkingMemory.insert(*
> AbstractWorkingMemory.java:788*)
> at org.drools.impl.StatefulKnowledgeSessionImpl.insert(*
> StatefulKnowledgeSessionImpl.java:216*)
> at org.drools.examples.ShoppingExample.main(*
> ShoppingExample.java:32*)
> Caused by: [Error: unable to resolve method:
> java.util.HashMap.$productName() [arglength=0]]
> [Near : {... Unknown }]
>  ^
> [Line: 1, Column: 0]
> at
> org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(*
> ReflectiveAccessorOptimizer.java:906*)
> at
> org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(
> *ReflectiveAccessorOptimizer.java:585*)
> at
> org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
> *ReflectiveAccessorOptimizer.java:313*)
> at
> org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(
> *ReflectiveAccessorOptimizer.java:138*)
> at org.mvel2.ast.ASTNode.getReducedValueAccelerated(*
> ASTNode.java:133*)
> at org.mvel2.compiler.ExecutableAccessor.getValue(*
> Executa

Re: [rules-users] looking for more information on drools expert

2009-07-16 Thread Gab Aldian

Thank you very much for the precision, I didn't see that. I used
'matches' instead of '==', because using '==' for comparing Strings in
java is very unsafe since it compares the references and not the
content of the strings. I thought it was the same in drools and I
thought 'matches' was the equivalent of the java '.equals' method.

But now you mention that in drools '==' is correct, I will use it rather.

Aldian

2009/7/16, Edson Tirelli :
>Very good! :)
>
>Just FYI, in the case of accumulate, you could also use the collectList()
> function to simplify your rule. This:
>
> $alarmList : LinkedList()
> from accumulate (  ($e : Element(parentindex!=0) and
>   $a : Alarm( origin matches
> $e.name&& probablecause==45)),
>   init( LinkedList alarmList = new
> LinkedList();),
>   action( alarmList.add($a);),
>   reverse( alarmList.remove($a);),
>   result( alarmList ) );
>Is the same as:
>
> $alarmList : List()
> from accumulate (  ($e : Element(parentindex!=0) and
>   $a : Alarm( origin matches
> $e.name&& probablecause==45)),
>   collectList( $a ) );
>
>Also, you can always implement your own functions for accumulate:
>
> http://blog.athico.com/2009/06/how-to-implement-accumulate-functions.html
>
>Finally, I see you are using "matches" operator to compare equal strings.
> Not sure if that is what you want, because "==" has different semantics and
> better performance than "matches" if what you really want is compare
> equality. Remember that in regexps, some characters have special meaning,
> for instance, "." is a wildcard for any character. Meaning:
>
> "abc" matches "a.c" -> true
> "abc" == "a.c" -> false
>
>Cheers,
>Edson
>
>
>
> 2009/7/16 Gab Aldian 
>
>> After some more investigation, I managed also to make it work with
>> collect: http://drools.pastebin.com/m14f0e329
>>
>> I would rather not multiplicate rules, because we probably will have
>> dozens for our system which is very big and can supervise around a
>> thousand equipements in some cases
>>
>> Thank you very much for the advices
>>
>> Aldian
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> http://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
>
> --
>  Edson Tirelli
>  JBoss Drools Core Development
>  JBoss by Red Hat @ www.jboss.com
>
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Re: [rules-users] looking for more information on drools expert

2009-07-16 Thread Edson Tirelli

   Very good! :)

   Just FYI, in the case of accumulate, you could also use the collectList()
function to simplify your rule. This:

$alarmList : LinkedList()
from accumulate (  ($e : Element(parentindex!=0) and
  $a : Alarm( origin matches
$e.name&& probablecause==45)),
  init( LinkedList alarmList = new
LinkedList();),
  action( alarmList.add($a);),
  reverse( alarmList.remove($a);),
  result( alarmList ) );
   Is the same as:

$alarmList : List()
from accumulate (  ($e : Element(parentindex!=0) and
  $a : Alarm( origin matches
$e.name&& probablecause==45)),
  collectList( $a ) );

   Also, you can always implement your own functions for accumulate:

http://blog.athico.com/2009/06/how-to-implement-accumulate-functions.html

   Finally, I see you are using "matches" operator to compare equal strings.
Not sure if that is what you want, because "==" has different semantics and
better performance than "matches" if what you really want is compare
equality. Remember that in regexps, some characters have special meaning,
for instance, "." is a wildcard for any character. Meaning:

"abc" matches "a.c" -> true
"abc" == "a.c" -> false

   Cheers,
   Edson



2009/7/16 Gab Aldian 

> After some more investigation, I managed also to make it work with
> collect: http://drools.pastebin.com/m14f0e329
>
> I would rather not multiplicate rules, because we probably will have
> dozens for our system which is very big and can supervise around a
> thousand equipements in some cases
>
> Thank you very much for the advices
>
> Aldian
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> http://lists.jboss.org/mailman/listinfo/rules-users
>



-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com
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Re: [rules-users] Getting hold of the Evaluator Registry

2009-07-16 Thread Edson Tirelli

There are several places that drools looks for configuration files,
including your home directory. Although, IMO it makes more sense to keep it
confined to the project itself. If you create a dir in your project, like:

src/resources/META-INF

And then configure the eclipse project to use the folde "src/resources"
as a source folder, it will pick it up.

[]s
Edson

2009/7/16 Jaroslaw Kijanowski 

> On Linux, when I created my own accumulate functions, I had to put this
> file in my home directory to have it picked up by Eclipse.
>
> Cheers,
>  Jarek
>
> Edson Tirelli wrote:
> >
> >root of your project "classpath", not root of your project.
> >
> >[]s
> >Edson
> >
> > 2009/7/15 Asif Iqbal mailto:asif.iq...@infor.com
> >>
> >
> > Hi Edson,
> >
> >
> >
> > I have gone away and tried the properties method of adding the
> > customEvaluator, which worked fine for the code.  But my IDE still
> > does not pick it up. Any ideas?
> >
> >
> >
> > Do I need to place it in a META-INF folder in the root of the
> project?
> >
> >
> >
> > I have the following in the drools.packagebuilder.conf file.
> >
> >
> >
> >
> drools.evaluator.custom=com.infor.audit.bpr.component.validation.impl.drools.CustomComparableEvaluatorsDefinition
> >
> >
> >
> > thanks..
> >
> >
> >
> >
> >
> >
> 
> >
> > *From:* rules-users-boun...@lists.jboss.org
> > 
> > [mailto:rules-users-boun...@lists.jboss.org
> > ] *On Behalf Of *Edson
> > Tirelli
> >
> > *Sent:* 15 July 2009 14:57
> > *To:* Rules Users List
> > *Subject:* Re: [rules-users] Getting hold of the Evaluator Registry
> >
> >
> >
> >
> >Yes, you are in the right track, and I understand this is a bit
> > confusing at first. One more reason for people to go to the October
> > Rules Fest 2009 where I will give a presentation on all the ways to
> > extend the engine to solve specific problems. It will be interesting
> > I hope (last year was awesome) and even Charles Forgy will be there
> > doing a presentation on Parallel Rete. :)
> >
> > Meanwhile I will write a tutorial on this, but just to help you
> > there, your approach is correct, except that you don't need to setup
> > the option for each operator. It works like this:
> >
> > * One EvaluatorDefinition class implements support to one or more
> > evaluators, defined by the method public String[] getEvaluatorIds().
> >
> > * All you need to do, then, is wire you class once and the engine
> > will pick-up all the IDs supported by that class. When you have your
> > class wired, you give it a unique string identifier, so that if you
> > ever need to replace it, or remove it, you will use that id.
> > Sometimes we use the operator as the ID, but usually it is something
> > that reminds you of the kind of evaluators that class define. For
> > instance, drools registers the ComparableEvaluatorsDefinition in
> > this way:
> >
> > drools.evaluator.comparable =
> > org.drools.base.evaluators.ComparableEvaluatorsDefinition
> >
> >   So in this case, "comparable" is the identifier. Finally, from my
> > previous e-mail you will see that the reason that the eclipse IDE is
> > still giving you errors is that you are using the API to configure
> > the evaluators. Just move the configuration to the configuration
> > file and the IDE will pick it up.
> >
> >[]s
> >Edson
> >
> >
> > 2009/7/15 Asif Iqbal  > >
> >
> > Edson,
> >
> >
> >
> > What I have done so far is created a
> > CustomComparableEvaluatorsDefinition, which is exactly the same as
> > the default ComparableEvaluatorsDefinition apart form having support
> > for strings, which I have done by creating
> > StringGreaterOrEqualEvaluators and added that in my custom class,
> > using the addEvaluatorFunction :-
> >
> >
> >
> > addEvaluator( ValueType.SHORT_TYPE,
> > Operator.GREATER, ShortGreaterEvaluator.INSTANCE );
> >
> > addEvaluator( ValueType.SHORT_TYPE,
> > Operator.GREATER_OR_EQUAL,ShortGreaterOrEqualEvaluator.INSTANCE
> );
> >
> > addEvaluator( ValueType.PSHORT_TYPE,
> > Operator.LESS,ShortLessEvaluator.INSTANCE );
> >
> > addEvaluator( ValueType.PSHORT_TYPE,
> > Operator.LESS_OR_EQUAL,   ShortLessOrEqualEvaluator.INSTANCE
> );
> >
> > addEvaluator( ValueType.PSHORT_TYPE,
> > Operator.GREATER, ShortGreaterEvaluator.INSTANCE );
> >
> > addEvaluator( ValueType.PSHORT_TYPE,
> > Operator.GREATER_OR_EQUAL,ShortGreaterOrEqualEvaluator.INSTANCE
> );
> >
> > //Custom addition

[rules-users] Using variables as map keys in MVEL in LHS

2009-07-16 Thread Steve Ronderos

Hello,

Again, I'm working on converting my project that used Drools 4.0.7 to 
5.0.1.

I've run across a problem with a rule that accesses a map in the LHS using 
a variable as the key.  When MVEL tries to resolve this, it appears that 
it is not evaluating the variable before accessing the map.  I've modified 
the Shopping example from the Drools 5.0.1 Examples to recreate the issue 
in a simpler setting.

This is the rule (I removed all the other rules for this example)
rule "Cart notification"
salience 10

when
$p : Product( $productName : name)
$c : Customer( cart[$productName] == $p) 
then
System.out.println( "Customer " + $c.name + " has " + $p.name + " 
in cart");
end 

I added the following to the Customer class:

private Map cart = new HashMap();
public Map getCart() {
return cart;
}

and I modified the main method to be:

public static final void main(String[] args) throws Exception {
final KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.
newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newClassPathResource( "Shopping.drl", 
ShoppingExample.class ),
  ResourceType.DRL );

final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );

final StatefulKnowledgeSession ksession = 
kbase.newStatefulKnowledgeSession();

Customer mark = new Customer( "mark",
  0 );
ksession.insert( mark );

Product shoes = new Product( "shoes",
 60 );
ksession.insert( shoes );
 
mark.getCart().put("shoes", shoes);
 
ksession.fireAllRules();
}

So basically, I added a map to Customer, inserted one item and made a rule 
that will use a variable as a key for that map. 
What I would expect to happen is:
  the Product pattern would match the shoes Product that is inserted into 
the ksession, the $productName variable would contain the value "shoes"
  the Customer fact, mark, would be matched with the second pattern in the 
rule because cart["shoes"] should resolve to the shoes fact which is $p in 
the rule
  The message should print

What actually happens is an error message:

Exception in thread "main" org.drools.RuntimeDroolsException: Exception 
executing predicate cart[$productName] == $p
at org.drools.rule.PredicateConstraint.isAllowedCachedLeft(
PredicateConstraint.java:302)
at org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(
SingleBetaConstraints.java:138)
at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:114)
at 
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(
SingleLeftTupleSinkAdapter.java:117)
at 
org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(
SingleLeftTupleSinkAdapter.java:78)
at org.drools.reteoo.LeftInputAdapterNode.assertObject(
LeftInputAdapterNode.java:142)
at 
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(
SingleObjectSinkAdapter.java:42)
at org.drools.reteoo.ObjectTypeNode.assertObject(
ObjectTypeNode.java:185)
at org.drools.reteoo.EntryPointNode.assertObject(
EntryPointNode.java:146)
at org.drools.common.AbstractWorkingMemory.insert(
AbstractWorkingMemory.java:1046)
at org.drools.common.AbstractWorkingMemory.insert(
AbstractWorkingMemory.java:1001)
at org.drools.common.AbstractWorkingMemory.insert(
AbstractWorkingMemory.java:788)
at org.drools.impl.StatefulKnowledgeSessionImpl.insert(
StatefulKnowledgeSessionImpl.java:216)
at org.drools.examples.ShoppingExample.main(
ShoppingExample.java:32)
Caused by: [Error: unable to resolve method: 
java.util.HashMap.$productName() [arglength=0]]
[Near : {... Unknown }]
 ^
[Line: 1, Column: 0]
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(
ReflectiveAccessorOptimizer.java:906)
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(
ReflectiveAccessorOptimizer.java:585)
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
ReflectiveAccessorOptimizer.java:313)
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(
ReflectiveAccessorOptimizer.java:138)
at org.mvel2.ast.ASTNode.getReducedValueAccelerated(
ASTNode.java:133)
at org.mvel2.compiler.ExecutableAccessor.getValue(
ExecutableAccessor.java:37)
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getCollectionProperty(
ReflectiveAccessorOptimizer.java:633)
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(
ReflectiveAccessorOptimizer.java:319)
at 
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(
ReflectiveAccessorOptimizer.java:138)
at org.mvel2.ast.ASTNode.getReducedValueAccelerated(
ASTNode.java:133)

[rules-users] StatefulKnowledgeSession leaves threads running

2009-07-16 Thread Rafael Ribeiro


Hi all,

 I've downloaded Drools fusion sample and started to make some changes to
the code (first of all wipe out the UI so I can test it easier).
 I tried to get to a minimal set so I can run a console main class and see
what happens but I am facing a strange behaviour.
 As soon as I start pushing events into the WorkingMemoryEntryPoint
("StockTick stream") a Thread - not daemonized since it blocks shutdown from
ending - is spawned and this prevents my JVM from shutting down (obviously
if I call System.exit(0) it will but I am avoiding this).
 I've tried both to halt and dispose the session that this entry point
belongs but with no success. Does anyone know how could I get rid of this
thread?

best regards,
-- 
View this message in context: 
http://www.nabble.com/StatefulKnowledgeSession-leaves-threads-running-tp24503855p24503855.html
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Re: [rules-users] looking for more information on drools expert

2009-07-16 Thread Gab Aldian

After some more investigation, I managed also to make it work with
collect: http://drools.pastebin.com/m14f0e329

I would rather not multiplicate rules, because we probably will have
dozens for our system which is very big and can supervise around a
thousand equipements in some cases

Thank you very much for the advices

Aldian
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Re: [rules-users] Updating a Boolean object in the WM

2009-07-16 Thread skasab2s


Thanks Wolfgang!

It worked great! The Declare-Command did it perfectly! Nice job! :)

Svetlomir.
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Re: [rules-users] Drools Govnor DB configuration

2009-07-16 Thread Jaroslaw Kijanowski

Hi,

pardeep.ru...@lntinfotech.com wrote:
> 
> Hi,
> I am using Apache OFBiz and had successfully integrated Drools Guvnor 
> war file with OFBiz.
> By default Drools Guvnor supports Embedded derby, but in OFBiz i am 
> using MYSql , so i changed
> the default embedded derby to MySql using repository.xml file by the 
> following code.
> 
>  class="org.apache.jackrabbit.core.persistence.bundle.MySqlPersistenceManager">
>  
> 
>value="jdbc:mysql://localhost:3306/drools"/>
>   
>   
>   
>   
> 
> 
> Using this I successfully integrated Drools guvnor with same database as 
> I am using for OFBiz(MySql).
> 
> Now I have created a new user in Drools guvnor to create permission for 
> that user, but I am not able to see
> where that username is stored in the database and in which entity or 
> table of MySql.
> 
> Also if i want to use the users available in OFBiz MySql database 
>  entity say 'Userlogin' where i am storing all the list of userlogins, 
> how can
> I retrieve the same and use this table data in drools Guvnor.

This can be done via JAAS - you just need to configure it to use a 
particular table in mysql for retrieving user logins/passwords.
Keep in mind that this is just for authentication (to login).
Here's a list of all available login modules:
http://www.jboss.org/community/wiki/LoginModule
http://www.jboss.org/community/wiki/DatabaseServerLoginModule

> Also when 
> I make a new user in Drools Govnor through
> administrator, my data of new user should go to  table 'UserLogin'.

AFAICT that's not possible and you need to synch your Guvnor user list 
with the OFBiz user list by yourself.

Cheers,
  Jarek
> 
> Please help me how this can be achieved in Drools Guvnor.
> 
> Thanks & Regards
> 
> Pardeep Ruhil
> L&T Infotech Ltd
> Mumbai
> Ph: +919820283884
> *
> Larsen & Toubro Infotech Ltd.*_
> __www.Lntinfotech.com_ 
> 
> This Document is classified as:
> 
> L&T Infotech Proprietary   L&T Infotech Confidential   L&T Infotech 
> Internal Use Only   L&T Infotech General Business  
> 
> This Email may contain confidential or privileged information for the 
> intended recipient (s) If you are not the intended recipient, please do 
> not use or disseminate the information, notify the sender and delete it 
> from your system.
> __
> 
> 
> 
> 
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Re: [rules-users] Updating a Boolean object in the WM

2009-07-16 Thread Wolfgang Laun

Well, you can't change a Java object Boolean b; assigning another Boolean to b
changes the object reference stored in b. Boolean has no setters.

Notice that the CE
when
Boolean()

always is true irrespective of the Boolean object that's in the WM.

If writing a Java fact class strains you too much, check the Expert
documentation
for "declare", to define a suitable fact type in your drl file.

For good obfuscation, you might try java.util.BitSet, (ab)using isEmpty().
   BitSet( empty == true )

-W


On Thu, Jul 16, 2009 at 11:31 AM, skasab2s wrote:
>
> Hi guys,
>
> I've been desperately trying to update a Boolean object, which is in the
> working memory.
>
> I have an initial rule that  first inserts it:
> rule "Insert initial weanable value" salience 100
>        when
>
>        then
>                Boolean $weanable = false;
>                insert($weanable);
> end
>
> and then I try to update it:
>       ...
>       when
>               $weanable: Boolean( )
>               ...
>       then
>                $weanable=true;
>                update($weanable);
> end
>
> Which results to this exception : org.drools.FactException: Update error:
> handle not found for object: true. Is it in the working memory?
> I checked in the working memory and the Boolean-object was there!
>
>
> Is it possible to update a boolean that is in the working memory? If not, do
> you know some other Java class with setters and getters (behaving as a
> drools-fact) that I don't have to create myself and which I can use instead
> of Bboolean for this case ?
>
> Thanks in advance!
>
> Svetlomir
>
> --
> View this message in context: 
> http://www.nabble.com/Updating-a-Boolean-object-in-the-WM-tp24513225p24513225.html
> Sent from the drools - user mailing list archive at Nabble.com.
>
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Re: [rules-users] OFBiz entity engine compatibility with Jackrabbit

2009-07-16 Thread Jaroslaw Kijanowski

Hi

pardeep.ru...@lntinfotech.com wrote:
> 
> Hi,
> 
> I am using apache OFBiz which uses Entity engine as a persistence layer.
> To know more about Entity engine refer this link
> http://ofbiz.apache.org/docs/entity.html
> Drools Guvnor uses Jackrabbit as a persistence layaer.
> So my question is there a way i can use OFbiz entity engine persistence 
> layer in Drools guvnor in place of
> Jackrabbit.

Jackrabbit is a JCR, OFBiz isn't, right? You should be able to replace 
Jackrabbit with any JCR implementation. IMO OFBiz is not an option.

> Is it feasible to do this and if possible how much effort is needed?

Haven't heard of anybody replacing Jackrabbit with another JCR 
implementation before - share your experience when you try :)

Cheers,
  Jarek

> 
> 
> Thanks & Regards
> 
> Pardeep Ruhil
> L&T Infotech Ltd
> Mumbai
> Ph: +919820283884
> *
> Larsen & Toubro Infotech Ltd.*_
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[rules-users] Problems with persistence of drools-flow

2009-07-16 Thread Ševčík Martin

I have a simple flow with human task and I want to persist it into database. 
I'm using MSSQL DB. 

My code is like this:

KnowledgeBase kbase = readKnowledgeBase();
// create the entity manager factory and register it in 
the environment
EntityManagerFactory emf =
Persistence.createEntityManagerFactory( 
"org.drools.persistence.jpa" );
Environment env = KnowledgeBaseFactory.newEnvironment();
env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );
BitronixTransactionManager btm = 
TransactionManagerServices.getTransactionManager();
env.set( EnvironmentName.TRANSACTION_MANAGER, btm);

StatefulKnowledgeSession ksession =
JPAKnowledgeService.newStatefulKnowledgeSession( 
kbase, null, env );

KnowledgeRuntimeLogger logger = 
KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");

ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new 
WSHumanTaskHandler());
// start a new process instance
Map data = new HashMap();
data.put("data3", new MyTask(1,"This is taks 1"));
ProcessInstance pi = 
ksession.startProcess("com.sample.ruleflow",data);
logger.close();

But when i run it, it end up with this error and there is nothing in the 
database (the tables were created, but there are all empty):

java.lang.NullPointerException
at 
org.drools.persistence.processinstance.ProcessInstanceInfo.getId(ProcessInstanceInfo.java:70)
at 
org.drools.persistence.processinstance.JPAProcessInstanceManager.addProcessInstance(JPAProcessInstanceManager.java:34)
at 
org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1620)
at 
org.drools.process.command.StartProcessCommand.execute(StartProcessCommand.java:46)
at 
org.drools.process.command.StartProcessCommand.execute(StartProcessCommand.java:10)
at 
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:229)
at 
org.drools.process.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:163)
at 
com.sample.RuleFlowPersistenceTest.main(RuleFlowPersistenceTest.java:74)
java.lang.RuntimeException: Could not rollback transaction
at 
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:258)
at 
org.drools.process.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:163)
at 
com.sample.RuleFlowPersistenceTest.main(RuleFlowPersistenceTest.java:74)
Caused by: java.lang.RuntimeException: Could not execute command
at 
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:255)
... 2 more
Caused by: java.lang.NullPointerException
at 
org.drools.persistence.processinstance.ProcessInstanceInfo.getId(ProcessInstanceInfo.java:70)
at 
org.drools.persistence.processinstance.JPAProcessInstanceManager.addProcessInstance(JPAProcessInstanceManager.java:34)
at 
org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1620)
at 
org.drools.process.command.StartProcessCommand.execute(StartProcessCommand.java:46)
at 
org.drools.process.command.StartProcessCommand.execute(StartProcessCommand.java:10)
at 
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:229)
... 2 more

In JPAProcessInstanceManager.java there this method is called:

public void addProcessInstance(ProcessInstance processInstance) {
ProcessInstanceInfo processInstanceInfo = new ProcessInstanceInfo( 
processInstance );
EntityManager em = (EntityManager) 
this.workingMemory.getEnvironment().get( EnvironmentName.ENTITY_MANAGER );
em.persist( processInstanceInfo );
((ProcessInstance) processInstance).setId( processInstanceInfo.getId() 
);
processInstanceInfo.updateLastReadDate();
internalAddProcessInstance(processInstance);
}


But em.persist does nothing, no connection do DB is called. And then the  next 
line will fail.




Can anybody help me.

Thanks

Martin Sevcik

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[rules-users] Updating a Boolean object in the WM

2009-07-16 Thread skasab2s


Hi guys,

I've been desperately trying to update a Boolean object, which is in the
working memory.

I have an initial rule that  first inserts it:
rule "Insert initial weanable value" salience 100
when

then
Boolean $weanable = false;
insert($weanable);
end

and then I try to update it:
   ...
   when
   $weanable: Boolean( )
   ...
   then
$weanable=true;
update($weanable);
end

Which results to this exception : org.drools.FactException: Update error:
handle not found for object: true. Is it in the working memory? 
I checked in the working memory and the Boolean-object was there!


Is it possible to update a boolean that is in the working memory? If not, do
you know some other Java class with setters and getters (behaving as a
drools-fact) that I don't have to create myself and which I can use instead
of Bboolean for this case ? 

Thanks in advance!

Svetlomir

-- 
View this message in context: 
http://www.nabble.com/Updating-a-Boolean-object-in-the-WM-tp24513225p24513225.html
Sent from the drools - user mailing list archive at Nabble.com.

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Re: [rules-users] looking for more information on drools expert

2009-07-16 Thread Wolfgang Laun

accumulate is indeed complex; the simpler collect might be applicable
as well in this case.

rule all45_A
when
forall ( Equipment( parent == 0, $id : id )
 Alarm( cause == 45, source == $id ) )
$alarms : ArrayList()
from collect( Alarm( cause == 45, $source : source ) )
then
for( Object o: $alarms ){
retract( o );// or anything else with (Alarm)o
}
insert( new SummaryAlarm( 45 ) );
end

Another solution would be by using 2 rules:

rule all45_B1
when
forall ( Equipment( parent == 0, $id : id )
 Alarm( cause == 45, source == $id ) )
then
insert( new SummaryAlarm( 45 ) );
end

rule all45_B2
when
SummaryAlarm( $cause : cause )
$a : Alarm( cause == $cause, $source : source )
Equipment( parent == 0, id  == $source)
then
retract( $a );  // or anything else with $a
end

-W

On Thu, Jul 16, 2009 at 10:55 AM, Gab Aldian wrote:
> I finally suceeded to get what I wanted using the keyword accumulate
> which is really very poweful as said in the doc. Here is the rule:
> http://drools.pastebin.com/m4f938e40
>
> It is a little bit complex, but it perfectly works. The only
> observation I have is that it seems drools compatible jdk is < 1.5,
> since I tryed to declare my linkedlist this way: LinkedList(),
> but got warnings about the unexpected '<'. One other thing, the
> "implicit and" does not work in the accumulate, you have to put it
> clearly.
>
> Now I have something giving me the list I need, all should be easy I
> think. Do you have any observation on the way I did it?
>
> Cheers
>
> Aldian
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Re: [rules-users] looking for more information on drools expert

2009-07-16 Thread Gab Aldian

I finally suceeded to get what I wanted using the keyword accumulate
which is really very poweful as said in the doc. Here is the rule:
http://drools.pastebin.com/m4f938e40

It is a little bit complex, but it perfectly works. The only
observation I have is that it seems drools compatible jdk is < 1.5,
since I tryed to declare my linkedlist this way: LinkedList(),
but got warnings about the unexpected '<'. One other thing, the
"implicit and" does not work in the accumulate, you have to put it
clearly.

Now I have something giving me the list I need, all should be easy I
think. Do you have any observation on the way I did it?

Cheers

Aldian
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Re: [rules-users] Getting hold of the Evaluator Registry

2009-07-16 Thread Jaroslaw Kijanowski

On Linux, when I created my own accumulate functions, I had to put this 
file in my home directory to have it picked up by Eclipse.

Cheers,
  Jarek

Edson Tirelli wrote:
> 
>root of your project "classpath", not root of your project.
> 
>[]s
>Edson
> 
> 2009/7/15 Asif Iqbal mailto:asif.iq...@infor.com>>
> 
> Hi Edson,
> 
>  
> 
> I have gone away and tried the properties method of adding the
> customEvaluator, which worked fine for the code.  But my IDE still
> does not pick it up. Any ideas?
> 
>  
> 
> Do I need to place it in a META-INF folder in the root of the project?
> 
>  
> 
> I have the following in the drools.packagebuilder.conf file.
> 
>  
> 
> 
> drools.evaluator.custom=com.infor.audit.bpr.component.validation.impl.drools.CustomComparableEvaluatorsDefinition
> 
>  
> 
> thanks..
> 
>  
> 
>  
> 
> 
> 
> *From:* rules-users-boun...@lists.jboss.org
> 
> [mailto:rules-users-boun...@lists.jboss.org
> ] *On Behalf Of *Edson
> Tirelli
> 
> *Sent:* 15 July 2009 14:57
> *To:* Rules Users List
> *Subject:* Re: [rules-users] Getting hold of the Evaluator Registry
> 
>  
> 
> 
>Yes, you are in the right track, and I understand this is a bit
> confusing at first. One more reason for people to go to the October
> Rules Fest 2009 where I will give a presentation on all the ways to
> extend the engine to solve specific problems. It will be interesting
> I hope (last year was awesome) and even Charles Forgy will be there
> doing a presentation on Parallel Rete. :)
> 
> Meanwhile I will write a tutorial on this, but just to help you
> there, your approach is correct, except that you don't need to setup
> the option for each operator. It works like this:
> 
> * One EvaluatorDefinition class implements support to one or more
> evaluators, defined by the method public String[] getEvaluatorIds().
> 
> * All you need to do, then, is wire you class once and the engine
> will pick-up all the IDs supported by that class. When you have your
> class wired, you give it a unique string identifier, so that if you
> ever need to replace it, or remove it, you will use that id.
> Sometimes we use the operator as the ID, but usually it is something
> that reminds you of the kind of evaluators that class define. For
> instance, drools registers the ComparableEvaluatorsDefinition in
> this way:
> 
> drools.evaluator.comparable =
> org.drools.base.evaluators.ComparableEvaluatorsDefinition
> 
>   So in this case, "comparable" is the identifier. Finally, from my
> previous e-mail you will see that the reason that the eclipse IDE is
> still giving you errors is that you are using the API to configure
> the evaluators. Just move the configuration to the configuration
> file and the IDE will pick it up.
> 
>[]s
>Edson
> 
> 
> 2009/7/15 Asif Iqbal  >
> 
> Edson,
> 
>  
> 
> What I have done so far is created a
> CustomComparableEvaluatorsDefinition, which is exactly the same as
> the default ComparableEvaluatorsDefinition apart form having support
> for strings, which I have done by creating
> StringGreaterOrEqualEvaluators and added that in my custom class,
> using the addEvaluatorFunction :-
> 
>  
> 
> addEvaluator( ValueType.SHORT_TYPE,
> Operator.GREATER, ShortGreaterEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.SHORT_TYPE,
> Operator.GREATER_OR_EQUAL,ShortGreaterOrEqualEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.PSHORT_TYPE,   
> Operator.LESS,ShortLessEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.PSHORT_TYPE,   
> Operator.LESS_OR_EQUAL,   ShortLessOrEqualEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.PSHORT_TYPE,   
> Operator.GREATER, ShortGreaterEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.PSHORT_TYPE,   
> Operator.GREATER_OR_EQUAL,ShortGreaterOrEqualEvaluator.INSTANCE );
> 
> //Custom additions
> 
> addEvaluator( ValueType.STRING_TYPE,   
> Operator.LESS,StringLessEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.STRING_TYPE,   
> Operator.LESS_OR_EQUAL,   StringLessOrEqualEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.STRING_TYPE,   
> Operator.GREATER, StringGreaterEvaluator.INSTANCE );
> 
> addEvaluator( ValueType.STRING_TYPE,   
> Operator.GREATER_OR_EQUAL,StringGreaterOrEqualE

Re: [rules-users] Drools Govnor DB configuration

[rules-users] Visu Nageswaran is out of the office.

Re: [rules-users] Using variables as map keys in MVEL in LHS

Re: [rules-users] StatefulKnowledgeSession leaves threads running

Re: [rules-users] Drools Govnor DB configuration

Re: [rules-users] StatefulKnowledgeSession leaves threads running

Re: [rules-users] StatefulKnowledgeSession leaves threads running

[rules-users] Question regarding Release 5.1

Re: [rules-users] Using variables as map keys in MVEL in LHS

Re: [rules-users] looking for more information on drools expert

Re: [rules-users] looking for more information on drools expert

Re: [rules-users] Getting hold of the Evaluator Registry

[rules-users] Using variables as map keys in MVEL in LHS

[rules-users] StatefulKnowledgeSession leaves threads running

Re: [rules-users] looking for more information on drools expert

Re: [rules-users] Updating a Boolean object in the WM

Re: [rules-users] Drools Govnor DB configuration

Re: [rules-users] Updating a Boolean object in the WM

Re: [rules-users] OFBiz entity engine compatibility with Jackrabbit

[rules-users] Problems with persistence of drools-flow

[rules-users] Updating a Boolean object in the WM

Re: [rules-users] looking for more information on drools expert

Re: [rules-users] looking for more information on drools expert

Re: [rules-users] Getting hold of the Evaluator Registry

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