Re: [rules-users] Simple rule and Query

[DECOUX Yannick]

Hi everyone,

I'am still stuck with this simple example, anyone can tell me where to look or 
what I'm missing ?

Thanks
Yannick


De : DECOUX Yannick [mailto:yannick.dec...@ucm.be]
Envoyé : mardi 5 avril 2011 07:52
À : rules-users@lists.jboss.org
Objet : [rules-users] Simple rule and Query

Hi,

I'am trying to use Query and i'am facing a little problem :
Given this simple rule :

package be.test.person
import be.test.person.*

query get adult
  adult : Adult( )
end

query get person
  person : Person( )
end

declare Adult
  name : String
end

rule A person over 18 is an adult
  when
Person( age = 18)
  then
System.out.println(Adult detected);
insert(new Adult());
end

Lets suppose one Person over 18 is inserted inside the working memory, the 
result of the query « get adult » is 0 (Please note the declaration of Adult 
type inside the rule)
If I create a Java class Adult (commenting the one in the .drl file) and then 
run the query again, this time the result is 1
Also, the signature of 
org.drools.runtime.rule.WorkingMemory.getQueryResults(String) says 
IllegalArgumentException when query is not found in the KnowledgeBase. This 
doesn't seems to be the case when I use a fake query name.
I'am using drools 5.1.1

Any idea on this ?

Thanks

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Re: [rules-users] execute particular rules programmatically and dynamically

[Michael Anstis]

In my example Rule 1 was shared between screen1.panel1.editbox1 and
screen1.panel1.editbox2:-

rule Rule1
  salience 1
  dialect mvel
when
  *ApplicationContext( context in (screen1.panel1.editbox1,
screen1.panel1.editbox2) )*
   ad : ApplicationData( age ==  || (  == null ))
then
  ad.setReturnMsg( \n age should not be null or empty );
end

This is an approach and may not be the best available; I was trying to
demonstrate how your problem can be solved without having to worry about
explicitly executing individual rules.For example, depending on what UI
technology you are using (Swing, JSF) you could subclass the UI components
and use these as facts - but such close coupling between UI and Rules may be
undesirable.

With kind regards,

Mike

On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:

 Good, Michael.

 'context' is used to distinguish which part of the UI which will be
 validated, right?  The customer will ask if they have 1 rules in
 the rulebase.  And some of them are redundant, so they want to make
 some of the rules share with several part of UI, e.g.  editbox 6,
 editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
 600.  Therefore, Rule3 can be shared for these 3 editbox validation,
 right?  However, for the context variable approach, it seems Rule3
 cannot be shared for another editbox with same value range validation.
  So these could be a key for the BRMS/Drools.


 Benson

 2011/4/14 Michael Anstis michael.ans...@gmail.com:
  Sure, whenever you copy values from your UI to your model for validation
 you
  also enter a fact representing the context of the values.
 
  Using your example you have two edit boxes on one screen and your rule
  simply checks for the value of a single edit box; in this case the
 context
  differentiates the two.
 
  Walking your example:
 
  (1) When editbox 1 looses focus you copy the value from the dropdown and
  edit box 1 into your model, plus you enter a context fact stating that
  these values relate to that part of the UI (say
 screen1.panel1.editbox1).
  You then insert these facts into WM and call fireAllRules. The rules
 check
  the context and only execute if the values are for the (rule)
 applicable
  context. (2) Editbox 2 works in a similar way, but has a different
 context
  ((say screen1.panel1.editbox2).
 
  Have a look at Plugtree - I believe they're quite well customed to
 writing
  UIs backed with rules; salaboy or esteban (or IRC #drools) might be able
 to
  offer more practical advice.
 
  With kind regards,
 
  Mike
 
 
 
  On 13 April 2011 17:48, Benson Fung benson.red...@gmail.com wrote:
 
  Hi Michael,
 
  Can you elaborate more for the uses of the ApplicationContext?  I
  can't follow its uses.
 
 
  Thanks
  Benson
 
  2011/4/14 Michael Anstis michael.ans...@gmail.com:
   Here's a quick (and probably sub-optimal way) ;)
  
   When you copy values from the UI to Facts for validation you also
   include
   the context of the validation.
  
   I've also removed the inline evals you were using.
  
   rule Rule1
 salience 1
 dialect mvel
   when
 ApplicationContext( context == * )
 ad : ApplicationData( age ==  || (  == null ))
   then
 ad.setReturnMsg( \n age should not be null or empty );
   end
  
   rule Rule2
 dialect mvel
   when
 ApplicationContext( context == screen1.panel1.ed )
 ad : ApplicationData( $age : age != null , age !=  , age  0
 ||
   
   100, minIssrdAge == Years )
   then
 ad.setReturnMsg( \nage is out of the range(i.e.   0 and 
 100)
   );
   end
  
   rule Rule3
  dialect mvel
when
  ad : ApplicationData( $age : age != null , age !=  , age 0
 ||
   
   600, minIssrdAge == Years )
then
  ad.setReturnMsg( \nage is out of the range(i.e.   0 and 
 600)
   );
   end
  
   On 13 April 2011 17:19, Benson Fung benson.red...@gmail.com wrote:
  
   Hi,
  
   Here is the scenario :
  
   If there are 2 edit boxes and 2 dropdown list at the frontend like.
  
  
   dropdown(minIssrdAge1)   editbox(age1)
   dropdown(minIssrdAge2)   editbox(age2)
  
   everytime when I lost focus the editbox(age1 or age2),  the
   editbox(age1 or age2) value will be validated against the following
   rules.
   i.e.  minIssrdAge1 and age1 will be validated together if lost focus
   the editbox age1.
 minIssrdAge2 and age2 will be validated together if lost focus
   the editbox age2
  
   Rule1 is mandatory because both editbox are required field.
   However, editbox(age1) is only valid within the 0 and 100.  and
   editbox(age2) is only valid within 0 and 600.
  
   In other words, editbox(age1) have to be validated against Rule1 +
   Rule2.  However, editbox(age2) have to validated against Rule1 +
   Rule3.
  
   My question, how to design the rule attribute or at the java program
   side so that different editbox can be validated against different
   rule.
  
   Please help.  I 

Re: [rules-users] How to use KnowledgeBase

[FrankVhh]

Hi,

In theory, you can do it both ways. Depending on your situation, you will
have to assess which approach will be the best solution.

Regarding the fact that creation of a kbase takes some time, you will
probably want to avoid doing it multiple times per transaction or, at least,
cache them. Also, when your rules are part of a continupus flow, you
probably want only 1 kbase.

In your situation, mortgages, I assume your rules are following eachother
with no or very little interaction from the user. In that case, I think one
would normally use 1 knowledgebase.

Theoretically, multiple knowledgebases should be used when dealing with
completely different rulesets, with one ruleset not influencing the other
(or execution of ruleset one happening in a totally different timeframe as
to justify the use of another kbase).

I hope this makes it clear.

Regards,
Frank


ismaximum wrote:
 
 Hi
 
 I am new to Drools and just want to start developing our app with Drools.
 I have some questions regarding KnowledgeBase instantiation. 
 
 Can we create a single instance of KB across the application and use it to
 create any stateful or stateless session? 
 In this case, do we need to add all the rules available in our application
 or we need to create one instance for each set of rules? In other words,
 consider we have many rules including mortgage calculation/ validation,
 auditing process, interest rate calculation and many others, do we need to
 create one instance of KB for each rule or just one KB and add all the
 rules to it?
 


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Re: [rules-users] execute particular rules programmatically and dynamically

[Benson Fung]

Thanks Michael, let me think about your solution seriously afterwards.
  Actually, I am using GWT.
I would like to say that sometimes customer's requirement is picky and
unexpectable.  They really want to have close coupling between UI and
Rules.  haha.  :)Do you think it is helpless as a
consultant???   :~(

If anyone has another idea of this scenario, you are welcome to post
your idea out there.


Thank you very much



2011/4/14 Michael Anstis michael.ans...@gmail.com:
 In my example Rule 1 was shared between screen1.panel1.editbox1 and
 screen1.panel1.editbox2:-

 rule Rule1
   salience 1
   dialect mvel
     when
   ApplicationContext( context in (screen1.panel1.editbox1,
 screen1.panel1.editbox2) )
       ad : ApplicationData( age ==  || (  == null ))
     then
       ad.setReturnMsg( \n age should not be null or empty );
 end

 This is an approach and may not be the best available; I was trying to
 demonstrate how your problem can be solved without having to worry about
 explicitly executing individual rules.For example, depending on what UI
 technology you are using (Swing, JSF) you could subclass the UI components
 and use these as facts - but such close coupling between UI and Rules may be
 undesirable.

 With kind regards,

 Mike

 On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:

 Good, Michael.

 'context' is used to distinguish which part of the UI which will be
 validated, right?  The customer will ask if they have 1 rules in
 the rulebase.  And some of them are redundant, so they want to make
 some of the rules share with several part of UI, e.g.  editbox 6,
 editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
 600.  Therefore, Rule3 can be shared for these 3 editbox validation,
 right?  However, for the context variable approach, it seems Rule3
 cannot be shared for another editbox with same value range validation.
  So these could be a key for the BRMS/Drools.


 Benson

 2011/4/14 Michael Anstis michael.ans...@gmail.com:
  Sure, whenever you copy values from your UI to your model for validation
  you
  also enter a fact representing the context of the values.
 
  Using your example you have two edit boxes on one screen and your rule
  simply checks for the value of a single edit box; in this case the
  context
  differentiates the two.
 
  Walking your example:
 
  (1) When editbox 1 looses focus you copy the value from the dropdown and
  edit box 1 into your model, plus you enter a context fact stating that
  these values relate to that part of the UI (say
  screen1.panel1.editbox1).
  You then insert these facts into WM and call fireAllRules. The rules
  check
  the context and only execute if the values are for the (rule)
  applicable
  context. (2) Editbox 2 works in a similar way, but has a different
  context
  ((say screen1.panel1.editbox2).
 
  Have a look at Plugtree - I believe they're quite well customed to
  writing
  UIs backed with rules; salaboy or esteban (or IRC #drools) might be able
  to
  offer more practical advice.
 
  With kind regards,
 
  Mike
 
 
 
  On 13 April 2011 17:48, Benson Fung benson.red...@gmail.com wrote:
 
  Hi Michael,
 
  Can you elaborate more for the uses of the ApplicationContext?  I
  can't follow its uses.
 
 
  Thanks
  Benson
 
  2011/4/14 Michael Anstis michael.ans...@gmail.com:
   Here's a quick (and probably sub-optimal way) ;)
  
   When you copy values from the UI to Facts for validation you also
   include
   the context of the validation.
  
   I've also removed the inline evals you were using.
  
   rule Rule1
     salience 1
     dialect mvel
       when
     ApplicationContext( context == * )
         ad : ApplicationData( age ==  || (  == null ))
       then
         ad.setReturnMsg( \n age should not be null or empty );
   end
  
   rule Rule2
     dialect mvel
       when
         ApplicationContext( context == screen1.panel1.ed )
         ad : ApplicationData( $age : age != null , age !=  , age  0
   ||
   
   100, minIssrdAge == Years )
       then
         ad.setReturnMsg( \nage is out of the range(i.e.   0 and 
   100)
   );
   end
  
   rule Rule3
      dialect mvel
        when
          ad : ApplicationData( $age : age != null , age !=  , age 0
   ||
   
   600, minIssrdAge == Years )
        then
          ad.setReturnMsg( \nage is out of the range(i.e.   0 and 
   600)
   );
   end
  
   On 13 April 2011 17:19, Benson Fung benson.red...@gmail.com wrote:
  
   Hi,
  
   Here is the scenario :
  
   If there are 2 edit boxes and 2 dropdown list at the frontend like.
  
  
   dropdown(minIssrdAge1)   editbox(age1)
   dropdown(minIssrdAge2)   editbox(age2)
  
   everytime when I lost focus the editbox(age1 or age2),  the
   editbox(age1 or age2) value will be validated against the following
   rules.
   i.e.  minIssrdAge1 and age1 will be validated together if lost focus
   the editbox age1.
         minIssrdAge2 and age2 will be validated together if lost focus
   the 

Re: [rules-users] Simple rule and Query

[Wolfgang Laun]

This seems to be fixed for 5.2.x.:

declare Num
  num : Integer
end

rule sort
when
Integer( $i: intValue )
then
insert( new Num( $i ) );
end

query numbers
$a: Num( $b: num )
end


QueryResults qRes = session.getQueryResults( numbers );
System.out.println( result count:  + qRes.size() );
for( QueryResultsRow row: qRes ){
Object obj = row.get( $b );
System.out.println( $b= + obj.toString() );
}

This produces the expected results.

Calling getQueryResults with a string not denoting an existing query returns
an empty result set. I've updated the javadoc - thanks.

-W





2011/4/14 DECOUX Yannick yannick.dec...@ucm.be

 query numbers
 $a: Num( $b: num )
 end
 Hi everyone,



 I’am still stuck with this simple example, anyone can tell me where to
 look or what I’m missing ?



 Thanks

 Yannick





 *De :* DECOUX Yannick [mailto:yannick.dec...@ucm.be]
 *Envoyé :* mardi 5 avril 2011 07:52
 *À :* rules-users@lists.jboss.org
 *Objet :* [rules-users] Simple rule and Query



 Hi,



 I’am trying to use Query and i’am facing a little problem :

 Given this simple rule :



 *package* be.test.person

 *import* be.test.person.*



 *query* get adult

   adult : Adult( )

 *end*



 *query* get person

   person : Person( )

 *end*



 *declare* Adult

   name : String

 *end*



 *rule* A person over 18 is an adult

   *when*

 Person( age = 18)

   *then*

 System.out.println(Adult detected);

 *insert*(*new* Adult());

 *end*

 * *

 Lets suppose one Person over 18 is inserted inside the working memory, the
 result of the query « get adult » is 0 (Please note the declaration of Adult
 type inside the rule)

 If I create a Java class Adult (commenting the one in the .drl file) and
 then run the query again, this time the result is 1

 Also, the signature of
 org.drools.runtime.rule.WorkingMemory.getQueryResults(String) says
 IllegalArgumentException when query is not found in the KnowledgeBase. This
 doesn’t seems to be the case when I use a fake query name.

 I’am using drools 5.1.1



 Any idea on this ?



 Thanks



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Re: [rules-users] How to use KnowledgeBase

[Wolfgang Laun]

Hi Max,

Also, consider serializing individual Knowledge Packages containing
logically related rules. You may combine them to create several knowledge
bases and serialize them, or create them during application startup.

Once you have a knowledge base, any number of sessions can be started. Make
sure to call dispose() to free (stateful) session resources.

-W


On 14 April 2011 09:13, FrankVhh frank.vanhoensho...@agserv.eu wrote:

 Hi,

 In theory, you can do it both ways. Depending on your situation, you will
 have to assess which approach will be the best solution.

 Regarding the fact that creation of a kbase takes some time, you will
 probably want to avoid doing it multiple times per transaction or, at
 least,
 cache them. Also, when your rules are part of a continupus flow, you
 probably want only 1 kbase.

 In your situation, mortgages, I assume your rules are following eachother
 with no or very little interaction from the user. In that case, I think one
 would normally use 1 knowledgebase.

 Theoretically, multiple knowledgebases should be used when dealing with
 completely different rulesets, with one ruleset not influencing the other
 (or execution of ruleset one happening in a totally different timeframe as
 to justify the use of another kbase).

 I hope this makes it clear.

 Regards,
 Frank


 ismaximum wrote:
 
  Hi
 
  I am new to Drools and just want to start developing our app with Drools.
  I have some questions regarding KnowledgeBase instantiation.
 
  Can we create a single instance of KB across the application and use it
 to
  create any stateful or stateless session?
  In this case, do we need to add all the rules available in our
 application
  or we need to create one instance for each set of rules? In other words,
  consider we have many rules including mortgage calculation/ validation,
  auditing process, interest rate calculation and many others, do we need
 to
  create one instance of KB for each rule or just one KB and add all the
  rules to it?
 


 --
 View this message in context:
 http://drools.46999.n3.nabble.com/How-to-use-KnowledgeBase-tp2819308p2819374.html
 Sent from the Drools: User forum mailing list archive at Nabble.com.
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Re: [rules-users] Expert versus Expert

[delirii]

A few months ago a question was asked about the difference and the use case
involving Drools Expert and Drools Guvnor.

To be honest, it isn't clear for me too and as there wasn't any answer to
this first question, so I'm trying to have an answer with your help :)

What's clear :
- Guvnor is a repository for the assets
- The easiest (?) and certainly the mainly available as a tutorial solution
is to create in each application an agent that grabs the assets and execute
the whole thing in its own context.

What's not clear :
- how to centralize the execution in order to know exactly what's executed,
by whom, and how (be able to log which facts are sent, to which rules, and
be able to read the execution plan
- if it exists a real stand alone centralized engine that match this need
(Drools Expert ?)

If some can explain this a little bit more, I'll be really happy to read !
And if it can be added to the current documentation, it could be a great
idea too.

Thanks for your help.


--
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[rules-users] Call for Papers, edBPM11, 5th International Workshop on Event-Driven Business Process Management, collocated with BPM 2011

[Adrian Paschke]

-

Dear colleagues (with apologies for cross-posting),

 

you are invited to submit papers for the 5th International Workshop on
Event-Driven Business Process Management  to be held alongside the Busines
Process Management Conference on August 29th 2011 in Clermont-Ferrand,
France

 

Event-Driven Business Process Management (EDBPM) is an enhancement of
Business Process Management (BPM) by new concepts of Service Oriented
Architecture (SOA), Event Driven Architecture (EDA), Software as a Service
(SaaS), Business Activity Monitoring (BAM) and Complex Event Processing
(CEP). In this context, BPM means a software platform which provides
companies the ability to model, manage, and optimize these processes for
significant gain. As an independent system, CEP is a parallel running
platform that analyses and processes events. The BPM- and the CEP-platform
correspond via events which are produced by the BPM-workflow engine and by
the - if distributed -- IT services which are associated with the business
process steps. Also events coming from different event sources in different
forms can trigger a business process or influence the execution of the
process or a service, which can result in another event. Even more, the
correlation of these events in a particular context can be treated as a
complex, business level event, relevant for the execution of other business
processes or services closing the loop of insight-to-action. A business
process - arbitrarily fine or coarse grained - can be seen as a service
again and can be choreographed with other business processes or services,
even between different enterprises and organisations.

 

Loosely coupled event-driven architecture for BPM provides important
benefits: 

 

. Responsiveness. Events can occur at any time from any source and processes
respond to them immediately, whenever they happen and wherever they happen. 

. Agility. New processes can be modeled, implemented, deployed, and
optimized more quickly in response to changing business requirements. 

. Flexibility. Processes can span heterogeneous platforms and programming
languages. Participating applications can be upgraded or changed without
breaking the process model. 

 

 

TOPICS

 

Authors are invited to submit novel contributions in the above mentioned
problem domain. Specifically, the relevant topics include, but are not
limited to:

 

. Event-driven BPM: Concepts

e.g. role of event processing in BPM, business events: types and
representation, vent stream processing in business processes, process event
processing in CEP, data- and event-driven business processes, event and
process interaction patterns 

. Design-time CEP and BPM

e.g. modelling modelling events in human-oriented tasks,
semantics/ontologies for event-driven BPM, BPMN and event processing,
interaction modelling of process model and event processing network.

. Run-time CEP and BPM

e.g. event pattern detection, BPEL and event processing, reasoning about
unknown/ similar events 

. Applications/ Use use cases for event-driven BPM

e.g. event-driven monitoring/ BAM , event-driven SLA monitoring,
context-aware BPM

 

 

The Workshop is planned as a full-day event, including a keynote, paper
presentations, lightning talks, demos, posters, and a moderated, open
discussion with the clear goal of agreeing upon a research roadmap for
event-driven Business Process Management research, by taking into account
new challenges, described earlier.

 

 

SUBMISSION

 

The following types of submission are solicited: 

. Long paper submissions, describing substantial contributions of novel
ongoing work. Long papers should be at most 12 pages long. 

. Short paper submissions, describing work in progress. These papers should
be at most 6 pages long.

. Use case submissions, describing results from an edBPM use case. These
papers should be at most 4 pages long.

 

 

Papers should be submitted in the new LNBIP format
(http://www.springer.com/computer/lncs?SGWID=0-164-7-487211-0). Papers have
to present original research contributions not concurrently submitted
elsewhere. The title page must contain a short abstract, a classification of
the topics covered, preferably using the list of topics above, and an
indication of the submission category (Long Paper/ Short Paper / Use case).

Papers can be uploaded via the workshop page on easychair, the address can
be found on the workshop homepage.

Papers will be published in the postconference proceeding (Springer Verlag)

 

 

IMPORTANT DATES

 

Deadline paper submissions:  May 6, 2011

Notification of acceptance: June 2, 2011

Camera-ready papers: June 17, 2011

Workshops: August 29, 2011

 

 

ORGANISING COMMITTEE:

 

Dr. Nenad Stojanovic 

FZI - Research Center for Information Technologies at the University of
Karlsruhe

Germany

nenad.stojano...@fzi.de

 

 

Dr. Opher Etzion

Senior Technical Staff 

Re: [rules-users] Expert versus Expert

[Michael Anstis]

What's not clear :
- how to centralize the execution in order to know exactly what's executed,
by whom, and how (be able to log which facts are sent, to which rules, and
be able to read the execution plan

 centralised execution could (possibly) be achieved using drools-server.
 WorkingMemoryEventListeners can provide a log of facts inserted - you'd
need to provide the glue for whom
 AgendaEventListeners can provide a log of rule activations

- if it exists a real stand alone centralized engine that match this need
(Drools Expert ?)

 Not Drools Expert. Drools server might be what you're after - but I don't
know too much about it.

With kind regards,

MIke

On 14 April 2011 09:11, delirii martinda...@free.fr wrote:

 A few months ago a question was asked about the difference and the use case
 involving Drools Expert and Drools Guvnor.

 To be honest, it isn't clear for me too and as there wasn't any answer to
 this first question, so I'm trying to have an answer with your help :)

 What's clear :
 - Guvnor is a repository for the assets
 - The easiest (?) and certainly the mainly available as a tutorial solution
 is to create in each application an agent that grabs the assets and execute
 the whole thing in its own context.

 What's not clear :
 - how to centralize the execution in order to know exactly what's executed,
 by whom, and how (be able to log which facts are sent, to which rules, and
 be able to read the execution plan
 - if it exists a real stand alone centralized engine that match this need
 (Drools Expert ?)

 If some can explain this a little bit more, I'll be really happy to read !
 And if it can be added to the current documentation, it could be a great
 idea too.

 Thanks for your help.


 --
 View this message in context:
 http://drools.46999.n3.nabble.com/Expert-versus-Expert-tp1739141p2819515.html
 Sent from the Drools: User forum mailing list archive at Nabble.com.
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Re: [rules-users] execute particular rules programmatically and dynamically

[Robert Christenson]

We've come across something similar in our project just recently as well. 

We have a requirement to have some rules activate based on a tab-off action but 
also at a higher level (such as validating an entire event entry in the GUI). I 
also need these rules to activate if initiated from an external webservice (no 
GUI at all). 

What we've decided to utilize is a meta identifier in certain rules called 
FieldsAffected which may contain a delimited list of field identifiers. 

An AgendaFilter implementation is created for GUI side requests and passed to 
fireAllRules. The filter implementation compares any/all field identifiers 
passed within the request and keeps only those activations which contain the 
field identifier in it's metadata field. 

Our RHS creates a validation msg which contains the field identifiers so that 
the calling GUI can display the proper msgs to the field. 

This allows us to support multiple call scenarios without duplicating the logic 
in multiple rules just based on context info. 

Hope this helps,

Bob Christenson


 --
 
 Message: 2
 Date: Thu, 14 Apr 2011 15:23:44 +0800
 From: Benson Fung benson.red...@gmail.com
 Subject: Re: [rules-users] execute particular rules programmatically
anddynamically
 To: Rules Users List rules-users@lists.jboss.org
 Message-ID: BANLkTi=OGO=rwfenybhm144gvst+p_k...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1
 
 Thanks Michael, let me think about your solution seriously afterwards.
  Actually, I am using GWT.
 I would like to say that sometimes customer's requirement is picky and
 unexpectable.  They really want to have close coupling between UI and
 Rules.  haha.  :)Do you think it is helpless as a
 consultant???   :~(
 
 If anyone has another idea of this scenario, you are welcome to post
 your idea out there.
 
 
 Thank you very much
 
 
 
 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 In my example Rule 1 was shared between screen1.panel1.editbox1 and
 screen1.panel1.editbox2:-
 
 rule Rule1
 ? salience 1
 ? dialect mvel
 ??? when
 ? ApplicationContext( context in (screen1.panel1.editbox1,
 screen1.panel1.editbox2) )
 ? ? ? ad : ApplicationData( age ==  || ( ?== null ))
 ? ? then
 ? ??? ad.setReturnMsg( \n age should not be null or empty );
 end
 
 This is an approach and may not be the best available; I was trying to
 demonstrate how your problem can be solved without having to worry about
 explicitly executing individual rules.For example, depending on what UI
 technology you are using (Swing, JSF) you could subclass the UI components
 and use these as facts - but such close coupling between UI and Rules may be
 undesirable.
 
 With kind regards,
 
 Mike
 
 On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:
 
 Good, Michael.
 
 'context' is used to distinguish which part of the UI which will be
 validated, right? ?The customer will ask if they have 1 rules in
 the rulebase. ?And some of them are redundant, so they want to make
 some of the rules share with several part of UI, e.g. ?editbox 6,
 editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
 600. ?Therefore, Rule3 can be shared for these 3 editbox validation,
 right? ?However, for the context variable approach, it seems Rule3
 cannot be shared for another editbox with same value range validation.
 ?So these could be a key for the BRMS/Drools.
 
 
 Benson
 
 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 Sure, whenever you copy values from your UI to your model for validation
 you
 also enter a fact representing the context of the values.
 
 Using your example you have two edit boxes on one screen and your rule
 simply checks for the value of a single edit box; in this case the
 context
 differentiates the two.
 
 Walking your example:
 
 (1) When editbox 1 looses focus you copy the value from the dropdown and
 edit box 1 into your model, plus you enter a context fact stating that
 these values relate to that part of the UI (say
 screen1.panel1.editbox1).
 You then insert these facts into WM and call fireAllRules. The rules
 check
 the context and only execute if the values are for the (rule)
 applicable
 context. (2) Editbox 2 works in a similar way, but has a different
 context
 ((say screen1.panel1.editbox2).
 
 Have a look at Plugtree - I believe they're quite well customed to
 writing
 UIs backed with rules; salaboy or esteban (or IRC #drools) might be able
 to
 offer more practical advice.
 
 With kind regards,
 
 Mike
 
 
 
 On 13 April 2011 17:48, Benson Fung benson.red...@gmail.com wrote:
 
 Hi Michael,
 
 Can you elaborate more for the uses of the ApplicationContext? ?I
 can't follow its uses.
 
 
 Thanks
 Benson
 
 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 Here's a quick (and probably sub-optimal way) ;)
 
 When you copy values from the UI to Facts for validation you also
 include
 the context of the validation.
 
 I've also removed the inline evals you were 

Re: [rules-users] execute particular rules programmatically and dynamically

[Benson Fung]

Hi Bob,

Thanks for your input and looks like close to the point.
AgendaFilter interface could be the key point of the solution plus the
rule attribute(I guess).  Can you try to elaborate more with simple
example how you can implement it?


Thanks

On Thu, Apr 14, 2011 at 5:38 PM, Robert Christenson r...@akc.org wrote:
 We've come across something similar in our project just recently as well.

 We have a requirement to have some rules activate based on a tab-off action 
 but also at a higher level (such as validating an entire event entry in the 
 GUI). I also need these rules to activate if initiated from an external 
 webservice (no GUI at all).

 What we've decided to utilize is a meta identifier in certain rules called 
 FieldsAffected which may contain a delimited list of field identifiers.

 An AgendaFilter implementation is created for GUI side requests and passed to 
 fireAllRules. The filter implementation compares any/all field identifiers 
 passed within the request and keeps only those activations which contain the 
 field identifier in it's metadata field.

 Our RHS creates a validation msg which contains the field identifiers so that 
 the calling GUI can display the proper msgs to the field.

 This allows us to support multiple call scenarios without duplicating the 
 logic in multiple rules just based on context info.

 Hope this helps,

 Bob Christenson


 --

 Message: 2
 Date: Thu, 14 Apr 2011 15:23:44 +0800
 From: Benson Fung benson.red...@gmail.com
 Subject: Re: [rules-users] execute particular rules programmatically
    and    dynamically
 To: Rules Users List rules-users@lists.jboss.org
 Message-ID: BANLkTi=OGO=rwfenybhm144gvst+p_k...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1

 Thanks Michael, let me think about your solution seriously afterwards.
  Actually, I am using GWT.
 I would like to say that sometimes customer's requirement is picky and
 unexpectable.  They really want to have close coupling between UI and
 Rules.  haha.  :)    Do you think it is helpless as a
 consultant???   :~(

 If anyone has another idea of this scenario, you are welcome to post
 your idea out there.


 Thank you very much



 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 In my example Rule 1 was shared between screen1.panel1.editbox1 and
 screen1.panel1.editbox2:-

 rule Rule1
 ? salience 1
 ? dialect mvel
 ??? when
 ? ApplicationContext( context in (screen1.panel1.editbox1,
 screen1.panel1.editbox2) )
 ? ? ? ad : ApplicationData( age ==  || ( ?== null ))
 ? ? then
 ? ??? ad.setReturnMsg( \n age should not be null or empty );
 end

 This is an approach and may not be the best available; I was trying to
 demonstrate how your problem can be solved without having to worry about
 explicitly executing individual rules.For example, depending on what UI
 technology you are using (Swing, JSF) you could subclass the UI components
 and use these as facts - but such close coupling between UI and Rules may be
 undesirable.

 With kind regards,

 Mike

 On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:

 Good, Michael.

 'context' is used to distinguish which part of the UI which will be
 validated, right? ?The customer will ask if they have 1 rules in
 the rulebase. ?And some of them are redundant, so they want to make
 some of the rules share with several part of UI, e.g. ?editbox 6,
 editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
 600. ?Therefore, Rule3 can be shared for these 3 editbox validation,
 right? ?However, for the context variable approach, it seems Rule3
 cannot be shared for another editbox with same value range validation.
 ?So these could be a key for the BRMS/Drools.


 Benson

 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 Sure, whenever you copy values from your UI to your model for validation
 you
 also enter a fact representing the context of the values.

 Using your example you have two edit boxes on one screen and your rule
 simply checks for the value of a single edit box; in this case the
 context
 differentiates the two.

 Walking your example:

 (1) When editbox 1 looses focus you copy the value from the dropdown and
 edit box 1 into your model, plus you enter a context fact stating that
 these values relate to that part of the UI (say
 screen1.panel1.editbox1).
 You then insert these facts into WM and call fireAllRules. The rules
 check
 the context and only execute if the values are for the (rule)
 applicable
 context. (2) Editbox 2 works in a similar way, but has a different
 context
 ((say screen1.panel1.editbox2).

 Have a look at Plugtree - I believe they're quite well customed to
 writing
 UIs backed with rules; salaboy or esteban (or IRC #drools) might be able
 to
 offer more practical advice.

 With kind regards,

 Mike



 On 13 April 2011 17:48, Benson Fung benson.red...@gmail.com wrote:

 Hi Michael,

 Can you elaborate more for the uses of the ApplicationContext? ?I
 

Re: [rules-users] execute particular rules programmatically and dynamically

[Benson Fung]

Hi Bob,

I don't understand about your statement :

'An AgendaFilter implementation is created for GUI side requests and
passed to fireAllRules. The filter implementation compares any/all
field identifiers passed within the request and keeps only those
activations which contain the field identifier in it's metadata
field.'

Can you show me how you implement AgendaFilter?

Benson

On Thu, Apr 14, 2011 at 5:38 PM, Robert Christenson r...@akc.org wrote:
 We've come across something similar in our project just recently as well.

 We have a requirement to have some rules activate based on a tab-off action 
 but also at a higher level (such as validating an entire event entry in the 
 GUI). I also need these rules to activate if initiated from an external 
 webservice (no GUI at all).

 What we've decided to utilize is a meta identifier in certain rules called 
 FieldsAffected which may contain a delimited list of field identifiers.

 An AgendaFilter implementation is created for GUI side requests and passed to 
 fireAllRules. The filter implementation compares any/all field identifiers 
 passed within the request and keeps only those activations which contain the 
 field identifier in it's metadata field.

 Our RHS creates a validation msg which contains the field identifiers so that 
 the calling GUI can display the proper msgs to the field.

 This allows us to support multiple call scenarios without duplicating the 
 logic in multiple rules just based on context info.

 Hope this helps,

 Bob Christenson


 --

 Message: 2
 Date: Thu, 14 Apr 2011 15:23:44 +0800
 From: Benson Fung benson.red...@gmail.com
 Subject: Re: [rules-users] execute particular rules programmatically
    and    dynamically
 To: Rules Users List rules-users@lists.jboss.org
 Message-ID: BANLkTi=OGO=rwfenybhm144gvst+p_k...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1

 Thanks Michael, let me think about your solution seriously afterwards.
  Actually, I am using GWT.
 I would like to say that sometimes customer's requirement is picky and
 unexpectable.  They really want to have close coupling between UI and
 Rules.  haha.  :)    Do you think it is helpless as a
 consultant???   :~(

 If anyone has another idea of this scenario, you are welcome to post
 your idea out there.


 Thank you very much



 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 In my example Rule 1 was shared between screen1.panel1.editbox1 and
 screen1.panel1.editbox2:-

 rule Rule1
 ? salience 1
 ? dialect mvel
 ??? when
 ? ApplicationContext( context in (screen1.panel1.editbox1,
 screen1.panel1.editbox2) )
 ? ? ? ad : ApplicationData( age ==  || ( ?== null ))
 ? ? then
 ? ??? ad.setReturnMsg( \n age should not be null or empty );
 end

 This is an approach and may not be the best available; I was trying to
 demonstrate how your problem can be solved without having to worry about
 explicitly executing individual rules.For example, depending on what UI
 technology you are using (Swing, JSF) you could subclass the UI components
 and use these as facts - but such close coupling between UI and Rules may be
 undesirable.

 With kind regards,

 Mike

 On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:

 Good, Michael.

 'context' is used to distinguish which part of the UI which will be
 validated, right? ?The customer will ask if they have 1 rules in
 the rulebase. ?And some of them are redundant, so they want to make
 some of the rules share with several part of UI, e.g. ?editbox 6,
 editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
 600. ?Therefore, Rule3 can be shared for these 3 editbox validation,
 right? ?However, for the context variable approach, it seems Rule3
 cannot be shared for another editbox with same value range validation.
 ?So these could be a key for the BRMS/Drools.


 Benson

 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 Sure, whenever you copy values from your UI to your model for validation
 you
 also enter a fact representing the context of the values.

 Using your example you have two edit boxes on one screen and your rule
 simply checks for the value of a single edit box; in this case the
 context
 differentiates the two.

 Walking your example:

 (1) When editbox 1 looses focus you copy the value from the dropdown and
 edit box 1 into your model, plus you enter a context fact stating that
 these values relate to that part of the UI (say
 screen1.panel1.editbox1).
 You then insert these facts into WM and call fireAllRules. The rules
 check
 the context and only execute if the values are for the (rule)
 applicable
 context. (2) Editbox 2 works in a similar way, but has a different
 context
 ((say screen1.panel1.editbox2).

 Have a look at Plugtree - I believe they're quite well customed to
 writing
 UIs backed with rules; salaboy or esteban (or IRC #drools) might be able
 to
 offer more practical advice.

 With kind regards,

 Mike



 On 13 April 2011 

Re: [rules-users] execute particular rules programmatically and dynamically

[Wolfgang Laun]

What could be the reason for...

On 14 April 2011 11:38, Robert Christenson r...@akc.org wrote:

 We've come across something similar in our project just recently as well.

 We have a requirement to have some rules activate based on a tab-off action
 but also at a higher level (such as validating an entire event entry in the
 GUI). I also need these rules to activate if initiated from an external
 webservice (no GUI at all).

 What we've decided to utilize is a meta identifier in certain rules called
 FieldsAffected which may contain a delimited list of field identifiers.

 An AgendaFilter implementation is created for GUI side requests and passed
 to fireAllRules. The filter implementation compares any/all field
 identifiers passed within the request and keeps only those activations which
 contain the field identifier in it's metadata field.


...not using a regular rule condition to ascertain this field match?

-W



 Our RHS creates a validation msg which contains the field identifiers so
 that the calling GUI can display the proper msgs to the field.

 This allows us to support multiple call scenarios without duplicating the
 logic in multiple rules just based on context info.

 Hope this helps,

 Bob Christenson


  --
 
  Message: 2
  Date: Thu, 14 Apr 2011 15:23:44 +0800
  From: Benson Fung benson.red...@gmail.com
  Subject: Re: [rules-users] execute particular rules programmatically
 anddynamically
  To: Rules Users List rules-users@lists.jboss.org
  Message-ID: BANLkTi=OGO=rwfenybhm144gvst+p_k...@mail.gmail.com
  Content-Type: text/plain; charset=ISO-8859-1
 
  Thanks Michael, let me think about your solution seriously afterwards.
   Actually, I am using GWT.
  I would like to say that sometimes customer's requirement is picky and
  unexpectable.  They really want to have close coupling between UI and
  Rules.  haha.  :)Do you think it is helpless as a
  consultant???   :~(
 
  If anyone has another idea of this scenario, you are welcome to post
  your idea out there.
 
 
  Thank you very much
 
 
 
  2011/4/14 Michael Anstis michael.ans...@gmail.com:
  In my example Rule 1 was shared between screen1.panel1.editbox1 and
  screen1.panel1.editbox2:-
 
  rule Rule1
  ? salience 1
  ? dialect mvel
  ??? when
  ? ApplicationContext( context in (screen1.panel1.editbox1,
  screen1.panel1.editbox2) )
  ? ? ? ad : ApplicationData( age ==  || ( ?== null ))
  ? ? then
  ? ??? ad.setReturnMsg( \n age should not be null or empty );
  end
 
  This is an approach and may not be the best available; I was trying to
  demonstrate how your problem can be solved without having to worry about
  explicitly executing individual rules.For example, depending on what UI
  technology you are using (Swing, JSF) you could subclass the UI
 components
  and use these as facts - but such close coupling between UI and Rules
 may be
  undesirable.
 
  With kind regards,
 
  Mike
 
  On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:
 
  Good, Michael.
 
  'context' is used to distinguish which part of the UI which will be
  validated, right? ?The customer will ask if they have 1 rules in
  the rulebase. ?And some of them are redundant, so they want to make
  some of the rules share with several part of UI, e.g. ?editbox 6,
  editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
  600. ?Therefore, Rule3 can be shared for these 3 editbox validation,
  right? ?However, for the context variable approach, it seems Rule3
  cannot be shared for another editbox with same value range validation.
  ?So these could be a key for the BRMS/Drools.
 
 
  Benson
 
  2011/4/14 Michael Anstis michael.ans...@gmail.com:
  Sure, whenever you copy values from your UI to your model for
 validation
  you
  also enter a fact representing the context of the values.
 
  Using your example you have two edit boxes on one screen and your rule
  simply checks for the value of a single edit box; in this case the
  context
  differentiates the two.
 
  Walking your example:
 
  (1) When editbox 1 looses focus you copy the value from the dropdown
 and
  edit box 1 into your model, plus you enter a context fact stating
 that
  these values relate to that part of the UI (say
  screen1.panel1.editbox1).
  You then insert these facts into WM and call fireAllRules. The rules
  check
  the context and only execute if the values are for the (rule)
  applicable
  context. (2) Editbox 2 works in a similar way, but has a different
  context
  ((say screen1.panel1.editbox2).
 
  Have a look at Plugtree - I believe they're quite well customed to
  writing
  UIs backed with rules; salaboy or esteban (or IRC #drools) might be
 able
  to
  offer more practical advice.
 
  With kind regards,
 
  Mike
 
 
 
  On 13 April 2011 17:48, Benson Fung benson.red...@gmail.com wrote:
 
  Hi Michael,
 
  Can you elaborate more for the uses of the ApplicationContext? ?I
  can't follow its uses.
 
 
  Thanks
  

Re: [rules-users] Drools mvel consequence if (logEnabled) discussion/disabled if statement

[AberAber]

That would be a good compromise for DROOLS, use at your own risk, but not out
of box.  How do I turn it on?

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[rules-users] Rule Templates

[FrankVhh]

Hi all,

In the Expert Guide and on some places on the internet, I read about Rule
Templates.

I think this is a very interesting feature. However, the expert manual
states to use it with caution as it is still an experimental feature.

Also, there isn't that much information on the web either.

Is it already encouraged to use it in production, or is it still very much
in a development phase and should it only be used for educational purposes?

Thanks a lot  lots of regards,
Frank

--
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[rules-users] Retrieving rule configuration

[Randhish Raghavan]

Hello,

A sample rule that I have created is listed below:

rule 'Abnormal time MBP Enrollment'
dialect 'mvel'
ruleflow-group enrl.ruleflowgroup.detailRuleFlowGroup

when
  ruleData : EnrlRuleData()
then
  -

end

Is there any way I can retrieve the rule flow group name 
(enrl.ruleflowgroup.detailRuleFlowGroup) when rules are loaded (Ex: using 
KnowledgeBaseListener)?

Thanks
Randhish





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Re: [rules-users] Retrieving rule configuration

[Wolfgang Laun]

You may have to use a bit from the unstable API:

KnowledgePackage kPackage = ...;
KnowledgePackageImp kPackageImp = (KnowledgePackageImp)kPackage;
for( org.drools.definition.rule.Rule rule: kPackage.getRules() ){
  String rName = rule.getName();
  org.drools.rule.Rule realRule =
(org.drools.rule.Rule)kPackageImp.getRule( rName );
  String rfGroup = realRule.getRuleFlowGroup();
}

-W

2011/4/14 Randhish Raghavan randhish_ragha...@mindtree.com

  Hello,



 A sample rule that I have created is listed below:



 rule 'Abnormal time MBP Enrollment'

 dialect 'mvel'

 ruleflow-group enrl.ruleflowgroup.detailRuleFlowGroup



 when

   ruleData : EnrlRuleData()

 then

   -



 end



 Is there any way I can retrieve the rule flow group name
 (“enrl.ruleflowgroup.detailRuleFlowGroup”) when rules are loaded (Ex: using
 KnowledgeBaseListener)?



 Thanks

 Randhish





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Re: [rules-users] Rule Templates

[Wolfgang Laun]

This feature is used internally (spreadsheet), and therefore one has to
assume that it's here to stay. The warning is mainly there because the API
is in the unstable part.
-W

On 14 April 2011 14:48, FrankVhh frank.vanhoensho...@agserv.eu wrote:

 Hi all,

 In the Expert Guide and on some places on the internet, I read about Rule
 Templates.

 I think this is a very interesting feature. However, the expert manual
 states to use it with caution as it is still an experimental feature.

 Also, there isn't that much information on the web either.

 Is it already encouraged to use it in production, or is it still very much
 in a development phase and should it only be used for educational purposes?

 Thanks a lot  lots of regards,
 Frank

 --
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Re: [rules-users] Problem using Guvnor rules in eclipse

[halpi3mn00b]

Same thing for me. I tried the mortgage example of the 5.1.1 distro with the
5.1.1 of guvnor...

Got a 401 error. The examples distro uses an older client version of drools
that can't handle the basic auth of the newer version of 5.1.1 guvnor.

So, I tried rewriting the mortgage app, got decently far, but it seems like
all the rules that should be firing, are not:
http://drools.46999.n3.nabble.com/rules-users-Can-t-Get-Rules-To-Modify-Object-State-in-Mortgage-Example-of-Drools-5-1-1-Guvnor-td2817700.html

Maybe there's a bug in guvnor or the client? IDK a complete example in the
examples distro using the latest version of client  server would be useful

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Re: [rules-users] Rule Templates

[FrankVhh]

Hi W.,

Thanks for the fast reply.

Meanwhile, I have been trying to play with the templates. Unfortunately, I
run into a nullpointerexception in the problems view of Eclipse. At first, I
hoped it was the same error as in
http://lists.jboss.org/pipermail/rules-users/2010-November/017229.html but
that does not seem to be the case.

Underneath, you can find my drl file. This is the only artifact that I am
having right now. There is no Java code yet, apart from the Price object.
This shouldn't be necessary to fix the problem either.

I tried to comment out some pieces of code to narrow down on the problem.
The nullpointerexception persists even if you comment everything from
package to the bottom of the file. This should indicate the problem has to
be in the template header, but I do not have a clue.

Could anyone help with this?

Thanks in advance.

==

template header
minimumValue
maximumValue
precision
startlevel
endlevel
roundingvalue

package rounding

import rounding.Price;

template Determine evaluated decimals
rule Determine evaluated decimals @{row.rowNumber}
salience 25
lock-on-active true
when
$price: Price(integerpart = @{minimumValue}  integerpart 
@{maximumValue}  evaluateddecimals == 999)
then
$price.setRoundedPrecision(@{precision});
$price.calculateNumberOfRoundedDecimals();
$price.calculateEvaluatedDecimals();
$price.calculateBasenumber();
update($price);
end
end template

template Determine rounding value
rule Determine rounding value @{row.rowNumber}
salience 0
no-loop true
when
$price: Price(integerpart = @{minimumValue}  integerpart 
@{maximumValue}  evaluateddecimals = @{startlevel}  evaluateddecimals 
@{endlevel})
then
$price.setRoundedPrice($price.getBasenumber() + 
@{roundingvalue});
System.out.println($price.getPrice() +  =  + (double)
$price.getRoundedPrice() / Math.pow(10,$price.getNumberofroundeddecimals())
);
end
end template

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[rules-users] deploy jbpm as service

[giuliano uboldi]

i'm a new jbpm user, and i have to create a workflow web service in a SOA
architecture.
Basically i think i have to expose methods for:
- retrieve the list of possible tasks to start
- start a task
- get the task of a user 
- get the parameters for a user task to create the form
- update a task after user interaction
- some other operations...

I can't find documentations on how to do this basic operations, for example:

how get the list of the possible process to start?
if i set the task owner in a process variable, how can i get the task that
person owns? 
how get the params declared in a usertask as Parameter Mapping or Result
Mapping to create the user form?

The javadocs are very poor, i can't find any example, i don't know if
there's a better approach to do this.

tanks in advance




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Re: [rules-users] execute particular rules programmatically and dynamically

[Benson Fung]

Hi Wolfgang,

Please see the following scenario.



On Thu, Apr 14, 2011 at 12:19 AM, Benson Fung benson.red...@gmail.com wrote:
 Hi,

 Here is the scenario :

 If there are 2 edit boxes and 2 dropdown list at the frontend like.


 dropdown(minIssrdAge1)   editbox(age1)
 dropdown(minIssrdAge2)   editbox(age2)

 everytime when I lost focus the editbox(age1 or age2),  the
 editbox(age1 or age2) value will be validated against the following
 rules.
 i.e.  minIssrdAge1 and age1 will be validated together if lost focus
 the editbox age1.
       minIssrdAge2 and age2 will be validated together if lost focus
 the editbox age2

 Rule1 is mandatory because both editbox are required field.
 However, editbox(age1) is only valid within the 0 and 100.  and
 editbox(age2) is only valid within 0 and 600.

 In other words, editbox(age1) have to be validated against Rule1 +
 Rule2.  However, editbox(age2) have to validated against Rule1 +
 Rule3.

 My question, how to design the rule attribute or at the java program
 side so that different editbox can be validated against different
 rule.

 Please help.  I can't find any solution by now.

 rule Rule1
        salience 1
        dialect mvel
        when
                ad : ApplicationData( age ==  || (  == null ))
        then
                ad.setReturnMsg( \n age should not be null or empty );
 end


 rule Rule2
        dialect mvel
        when
                ad : ApplicationData( $age : age != null , age !=  , 
 minIssrdAge
 == Years )
                eval(Integer.parseInt($age)  0) or 
 eval(Integer.parseInt($age)  100)
        then
                ad.setReturnMsg( \nage is out of the range(i.e.   0 and  
 100) );
 end

 rule Rule3
        dialect mvel
        when
                ad : ApplicationData( $age : age != null , age !=  , 
 minIssrdAge
 == Years )
                eval(Integer.parseInt($age)  0) or 
 eval(Integer.parseInt($age)  600)
        then
                ad.setReturnMsg( \nage is out of the range(i.e.   0 and  
 600) );
 end


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Re: [rules-users] Expert versus Expert

[Mark Proctor]

On 14/04/2011 09:11, delirii wrote:
 A few months ago a question was asked about the difference and the use case
 involving Drools Expert and Drools Guvnor.

 To be honest, it isn't clear for me too and as there wasn't any answer to
 this first question, so I'm trying to have an answer with your help :)

 What's clear :
 - Guvnor is a repository for the assets
 - The easiest (?) and certainly the mainly available as a tutorial solution
 is to create in each application an agent that grabs the assets and execute
 the whole thing in its own context.

 What's not clear :
 - how to centralize the execution in order to know exactly what's executed,
 by whom, and how (be able to log which facts are sent, to which rules, and
 be able to read the execution plan
 - if it exists a real stand alone centralized engine that match this need
 (Drools Expert ?)

 If some can explain this a little bit more, I'll be really happy to read !
 And if it can be added to the current documentation, it could be a great
 idea too.

I think that's fair. We don't have centralised management of expert 
runtime's yet. It's currently de-coupled via a pull mechanism.

Mark
 Thanks for your help.


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[rules-users] Drools Guvnor with JasperReport

[danielnb]

Hi guys.

I have a problem using guvnor + jasperreport, i always receive perm gem
space.

I tried many forums, all of them said to set jvm memory up, like this :

-Xms1024m -Xmx1024m

I did it and keep getting the perm gem space error.

I want to know if anyone of you guys have been through this problem, if you
have some ideas how can i solve it.  anything that might help.

Thank you.  :D




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Re: [rules-users] Retrieving rule configuration

[Randhish Raghavan]

Thanks a lot. It worked perfect.

Regards,
Randhish

From: rules-users-boun...@lists.jboss.org 
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Wolfgang Laun
Sent: Thursday, April 14, 2011 6:26 PM
To: Rules Users List
Subject: Re: [rules-users] Retrieving rule configuration

You may have to use a bit from the unstable API:

KnowledgePackage kPackage = ...;
KnowledgePackageImp kPackageImp = (KnowledgePackageImp)kPackage;
for( org.drools.definition.rule.Rule rule: kPackage.getRules() ){
  String rName = rule.getName();
  org.drools.rule.Rule realRule =
(org.drools.rule.Rule)kPackageImp.getRule( rName );
  String rfGroup = realRule.getRuleFlowGroup();
}

-W
2011/4/14 Randhish Raghavan 
randhish_ragha...@mindtree.commailto:randhish_ragha...@mindtree.com
Hello,

A sample rule that I have created is listed below:

rule 'Abnormal time MBP Enrollment'
dialect 'mvel'
ruleflow-group enrl.ruleflowgroup.detailRuleFlowGroup

when
  ruleData : EnrlRuleData()
then
  -

end

Is there any way I can retrieve the rule flow group name 
(enrl.ruleflowgroup.detailRuleFlowGroup) when rules are loaded (Ex: using 
KnowledgeBaseListener)?

Thanks
Randhish





http://www.mindtree.com/email/disclaimer.html

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Re: [rules-users] Drools Guvnor with JasperReport

[Geoffrey De Smet]

-Xmx does not affect the perm gem space, it stays on 64m

use instead
-XX:MaxPermSize=512m


Op 14-04-11 16:17, danielnb schreef:
 Hi guys.

 I have a problem using guvnor + jasperreport, i always receive perm gem
 space.

 I tried many forums, all of them said to set jvm memory up, like this :

 -Xms1024m -Xmx1024m

 I did it and keep getting the perm gem space error.

 I want to know if anyone of you guys have been through this problem, if you
 have some ideas how can i solve it.  anything that might help.

 Thank you.  :D




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Re: [rules-users] execute particular rules programmatically and dynamically

[Wolfgang Laun]

On 14 April 2011 16:06, Benson Fung benson.red...@gmail.com wrote:

 Hi Wolfgang,

 Please see the following scenario.



No, it is Robert's use of metadata I'm questioning.
-W
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Re: [rules-users] Rule Templates

[Wolfgang Laun]

Not that I can see any problem. Disregard the Eclipse error, expand the
template as documented, and then we'll see what we'll see...
-W

On 14 April 2011 15:36, FrankVhh frank.vanhoensho...@agserv.eu wrote:

 Hi W.,

 Thanks for the fast reply.

 Meanwhile, I have been trying to play with the templates. Unfortunately, I
 run into a nullpointerexception in the problems view of Eclipse. At first,
 I
 hoped it was the same error as in
 http://lists.jboss.org/pipermail/rules-users/2010-November/017229.html but
 that does not seem to be the case.

 Underneath, you can find my drl file. This is the only artifact that I am
 having right now. There is no Java code yet, apart from the Price object.
 This shouldn't be necessary to fix the problem either.

 I tried to comment out some pieces of code to narrow down on the problem.
 The nullpointerexception persists even if you comment everything from
 package to the bottom of the file. This should indicate the problem has
 to
 be in the template header, but I do not have a clue.

 Could anyone help with this?

 Thanks in advance.

 ==

 template header
 minimumValue
 maximumValue
 precision
 startlevel
 endlevel
 roundingvalue

 package rounding

 import rounding.Price;

 template Determine evaluated decimals
 rule Determine evaluated decimals @{row.rowNumber}
salience 25
lock-on-active true
when
$price: Price(integerpart = @{minimumValue}  integerpart
 
 @{maximumValue}  evaluateddecimals == 999)
then
$price.setRoundedPrecision(@{precision});
$price.calculateNumberOfRoundedDecimals();
$price.calculateEvaluatedDecimals();
$price.calculateBasenumber();
update($price);
 end
 end template

 template Determine rounding value
 rule Determine rounding value @{row.rowNumber}
salience 0
no-loop true
when
$price: Price(integerpart = @{minimumValue}  integerpart
 
 @{maximumValue}  evaluateddecimals = @{startlevel}  evaluateddecimals
 
 @{endlevel})
then
$price.setRoundedPrice($price.getBasenumber() +
 @{roundingvalue});
System.out.println($price.getPrice() +  =  + (double)
 $price.getRoundedPrice() / Math.pow(10,$price.getNumberofroundeddecimals())
 );
 end
 end template

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Re: [rules-users] Rule Templates

[FrankVhh]

Hi,

After trying the example from the documentation, eclipse returned the same
error. So, I got the same idea and just worked further ignoring eclipse.

I saw what I saw and that was that it works fine now, even with the error
still displayed in the problems view.

Thanks for the help ;-)

Regards,
Frank


Wolfgang Laun-2 wrote:
 
 Not that I can see any problem. Disregard the Eclipse error, expand the
 template as documented, and then we'll see what we'll see...
 -W
 
 On 14 April 2011 15:36, FrankVhh lt;frank.vanhoensho...@agserv.eugt;
 wrote:
 
 Hi W.,

 Thanks for the fast reply.

 Meanwhile, I have been trying to play with the templates. Unfortunately,
 I
 run into a nullpointerexception in the problems view of Eclipse. At
 first,
 I
 hoped it was the same error as in
 http://lists.jboss.org/pipermail/rules-users/2010-November/017229.html
 but
 that does not seem to be the case.

 Underneath, you can find my drl file. This is the only artifact that I am
 having right now. There is no Java code yet, apart from the Price object.
 This shouldn't be necessary to fix the problem either.

 I tried to comment out some pieces of code to narrow down on the problem.
 The nullpointerexception persists even if you comment everything from
 package to the bottom of the file. This should indicate the problem has
 to
 be in the template header, but I do not have a clue.

 Could anyone help with this?

 Thanks in advance.

 ==

 template header
 minimumValue
 maximumValue
 precision
 startlevel
 endlevel
 roundingvalue

 package rounding

 import rounding.Price;

 template Determine evaluated decimals
 rule Determine evaluated decimals @{row.rowNumber}
salience 25
lock-on-active true
when
$price: Price(integerpart = @{minimumValue} 
 integerpart
 
 @{maximumValue}  evaluateddecimals == 999)
then
$price.setRoundedPrecision(@{precision});
$price.calculateNumberOfRoundedDecimals();
$price.calculateEvaluatedDecimals();
$price.calculateBasenumber();
update($price);
 end
 end template

 template Determine rounding value
 rule Determine rounding value @{row.rowNumber}
salience 0
no-loop true
when
$price: Price(integerpart = @{minimumValue} 
 integerpart
 
 @{maximumValue}  evaluateddecimals = @{startlevel} 
 evaluateddecimals
 
 @{endlevel})
then
$price.setRoundedPrice($price.getBasenumber() +
 @{roundingvalue});
System.out.println($price.getPrice() +  =  + (double)
 $price.getRoundedPrice() /
 Math.pow(10,$price.getNumberofroundeddecimals())
 );
 end
 end template

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[rules-users] Problem with rule: Unexpected exception executing action org.drools.reteoo.PropagationQueuingNode$PropagateAction@631b86c7

[quivler]

Hey I'm getting the following Error Unexpected exception executing action
org.drools.reteoo.PropagationQueuingNode$PropagateAction@631b86c7 with one
off my rules in my project.
The problem is linked with the use of two after statements in one rule.
If I delete one of them everything works like a charm.
The rule looks like this:

// Regeln
rule Vergessene Herdplatte

when
// Platte wurde eingeschaltet und es steht kein Topf auf ihr
$platte: HerdplatteEingeschaltet( plateOccupied == false ) from
entry-point events 
// und in den nächsten 20 sek wird die gleiche Platte nicht
ausgeschaltet 
not( HerdplatteAusgeschaltet( this.nummer == $platte.nummer, this
after[0s,20s] $platte ) from entry-point events ) 
// oder es wird in den nächsten 20 sek kein Topf auf die Platte
gestellt
not( TopfAufHerdplatte( this.nummer == $platte.nummer, this
after[0s,20s] $platte ) from entry-point events )
then
System.out.println(Vergessene Herdplatte erkannt!);

end

If I comment one of the not-clause out, it works.
I created an unit-test 
http://drools.46999.n3.nabble.com/file/n2821121/TestProject.zip
TestProject.zip  which reproduces the exception.
And here the Failure Trace:

org.drools.RuntimeDroolsException: Unexpected exception executing action
org.drools.reteoo.PropagationQueuingNode$PropagateAction@631b86c7
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1473)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:182)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:145)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:96)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:44)
at com.sample.FusionTest.testRule(FusionTest.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.NullPointerException
at
org.drools.time.impl.CompositeMaxDurationTimer.createTrigger(CompositeMaxDurationTimer.java:58)
at org.drools.common.Scheduler.scheduleAgendaItem(Scheduler.java:55)
at org.drools.common.DefaultAgenda.scheduleItem(DefaultAgenda.java:314)
at
org.drools.reteoo.RuleTerminalNode.assertLeftTuple(RuleTerminalNode.java:185)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)
at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:101)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)
at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:101)
at

Re: [rules-users] execute particular rules programmatically and dynamically

[Benson Fung]

Hi Bob,

Let me try to implement the AgendaFIlter :

import java.util.List;

import org.drools.runtime.rule.Activation;
import org.drools.runtime.rule.AgendaFilter;

public class RuleNameContainsAgendaFilter implements AgendaFilter {


private ListString rules;

public RuleNameContainsAgendaFilter(ListString rules) {
this.rules = rules;
}

public boolean accept(Activation activation) {
// TODO Auto-generated method stub
String activationRuleName = activation.getRule().getName();
if(rules.contains(activationRuleName)) {
return true;
} else {
return false;
}
}

}

I think the above the AgendaFilter can resolve the particular rule
execution value, i.e.  Just pass all the specific rule into a List
object and create the above AgendaFilter, then those particular rule
can be executed.


Please comment.


Benson

On Thu, Apr 14, 2011 at 5:38 PM, Robert Christenson r...@akc.org wrote:
 We've come across something similar in our project just recently as well.

 We have a requirement to have some rules activate based on a tab-off action 
 but also at a higher level (such as validating an entire event entry in the 
 GUI). I also need these rules to activate if initiated from an external 
 webservice (no GUI at all).

 What we've decided to utilize is a meta identifier in certain rules called 
 FieldsAffected which may contain a delimited list of field identifiers.

 An AgendaFilter implementation is created for GUI side requests and passed to 
 fireAllRules. The filter implementation compares any/all field identifiers 
 passed within the request and keeps only those activations which contain the 
 field identifier in it's metadata field.

 Our RHS creates a validation msg which contains the field identifiers so that 
 the calling GUI can display the proper msgs to the field.

 This allows us to support multiple call scenarios without duplicating the 
 logic in multiple rules just based on context info.

 Hope this helps,

 Bob Christenson


 --

 Message: 2
 Date: Thu, 14 Apr 2011 15:23:44 +0800
 From: Benson Fung benson.red...@gmail.com
 Subject: Re: [rules-users] execute particular rules programmatically
    and    dynamically
 To: Rules Users List rules-users@lists.jboss.org
 Message-ID: BANLkTi=OGO=rwfenybhm144gvst+p_k...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1

 Thanks Michael, let me think about your solution seriously afterwards.
  Actually, I am using GWT.
 I would like to say that sometimes customer's requirement is picky and
 unexpectable.  They really want to have close coupling between UI and
 Rules.  haha.  :)    Do you think it is helpless as a
 consultant???   :~(

 If anyone has another idea of this scenario, you are welcome to post
 your idea out there.


 Thank you very much



 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 In my example Rule 1 was shared between screen1.panel1.editbox1 and
 screen1.panel1.editbox2:-

 rule Rule1
 ? salience 1
 ? dialect mvel
 ??? when
 ? ApplicationContext( context in (screen1.panel1.editbox1,
 screen1.panel1.editbox2) )
 ? ? ? ad : ApplicationData( age ==  || ( ?== null ))
 ? ? then
 ? ??? ad.setReturnMsg( \n age should not be null or empty );
 end

 This is an approach and may not be the best available; I was trying to
 demonstrate how your problem can be solved without having to worry about
 explicitly executing individual rules.For example, depending on what UI
 technology you are using (Swing, JSF) you could subclass the UI components
 and use these as facts - but such close coupling between UI and Rules may be
 undesirable.

 With kind regards,

 Mike

 On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:

 Good, Michael.

 'context' is used to distinguish which part of the UI which will be
 validated, right? ?The customer will ask if they have 1 rules in
 the rulebase. ?And some of them are redundant, so they want to make
 some of the rules share with several part of UI, e.g. ?editbox 6,
 editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
 600. ?Therefore, Rule3 can be shared for these 3 editbox validation,
 right? ?However, for the context variable approach, it seems Rule3
 cannot be shared for another editbox with same value range validation.
 ?So these could be a key for the BRMS/Drools.


 Benson

 2011/4/14 Michael Anstis michael.ans...@gmail.com:
 Sure, whenever you copy values from your UI to your model for validation
 you
 also enter a fact representing the context of the values.

 Using your example you have two edit boxes on one screen and your rule
 simply checks for the value of a single edit box; in this case the
 context
 differentiates the two.

 Walking your example:

 (1) When editbox 1 looses focus you copy the value from the 

Re: [rules-users] execute particular rules programmatically and dynamically

[Michael Anstis]

I believe Wolfgang's (and my) fear is that you are re-inventing the wheel.

Writing your own AgendaFilter is in essence achieving the same function as
having an additional Fact in your rule that prevents the rule's activation
appearing on the agenda in the first place.

Using an AgendaFilter will allow you to prevent a rule that has been matched
and placed on the agenda from executing.

Not that it won't work; it's just that if smells bad.

Just trying to be helpful :)

Mike


On 14 April 2011 18:51, Benson Fung benson.red...@gmail.com wrote:

 Hi Bob,

 Let me try to implement the AgendaFIlter :

 import java.util.List;

 import org.drools.runtime.rule.Activation;
 import org.drools.runtime.rule.AgendaFilter;

 public class RuleNameContainsAgendaFilter implements AgendaFilter {


private ListString rules;

public RuleNameContainsAgendaFilter(ListString rules) {
this.rules = rules;
}

public boolean accept(Activation activation) {
// TODO Auto-generated method stub
String activationRuleName = activation.getRule().getName();
if(rules.contains(activationRuleName)) {
return true;
} else {
return false;
}
}

 }

 I think the above the AgendaFilter can resolve the particular rule
 execution value, i.e.  Just pass all the specific rule into a List
 object and create the above AgendaFilter, then those particular rule
 can be executed.


 Please comment.


 Benson

 On Thu, Apr 14, 2011 at 5:38 PM, Robert Christenson r...@akc.org wrote:
  We've come across something similar in our project just recently as well.
 
  We have a requirement to have some rules activate based on a tab-off
 action but also at a higher level (such as validating an entire event entry
 in the GUI). I also need these rules to activate if initiated from an
 external webservice (no GUI at all).
 
  What we've decided to utilize is a meta identifier in certain rules
 called FieldsAffected which may contain a delimited list of field
 identifiers.
 
  An AgendaFilter implementation is created for GUI side requests and
 passed to fireAllRules. The filter implementation compares any/all field
 identifiers passed within the request and keeps only those activations which
 contain the field identifier in it's metadata field.
 
  Our RHS creates a validation msg which contains the field identifiers so
 that the calling GUI can display the proper msgs to the field.
 
  This allows us to support multiple call scenarios without duplicating the
 logic in multiple rules just based on context info.
 
  Hope this helps,
 
  Bob Christenson
 
 
  --
 
  Message: 2
  Date: Thu, 14 Apr 2011 15:23:44 +0800
  From: Benson Fung benson.red...@gmail.com
  Subject: Re: [rules-users] execute particular rules programmatically
 anddynamically
  To: Rules Users List rules-users@lists.jboss.org
  Message-ID: BANLkTi=OGO=rwfenybhm144gvst+p_k...@mail.gmail.com
  Content-Type: text/plain; charset=ISO-8859-1
 
  Thanks Michael, let me think about your solution seriously afterwards.
   Actually, I am using GWT.
  I would like to say that sometimes customer's requirement is picky and
  unexpectable.  They really want to have close coupling between UI and
  Rules.  haha.  :)Do you think it is helpless as a
  consultant???   :~(
 
  If anyone has another idea of this scenario, you are welcome to post
  your idea out there.
 
 
  Thank you very much
 
 
 
  2011/4/14 Michael Anstis michael.ans...@gmail.com:
  In my example Rule 1 was shared between screen1.panel1.editbox1 and
  screen1.panel1.editbox2:-
 
  rule Rule1
  ? salience 1
  ? dialect mvel
  ??? when
  ? ApplicationContext( context in (screen1.panel1.editbox1,
  screen1.panel1.editbox2) )
  ? ? ? ad : ApplicationData( age ==  || ( ?== null ))
  ? ? then
  ? ??? ad.setReturnMsg( \n age should not be null or empty );
  end
 
  This is an approach and may not be the best available; I was trying to
  demonstrate how your problem can be solved without having to worry
 about
  explicitly executing individual rules.For example, depending on what UI
  technology you are using (Swing, JSF) you could subclass the UI
 components
  and use these as facts - but such close coupling between UI and Rules
 may be
  undesirable.
 
  With kind regards,
 
  Mike
 
  On 14 April 2011 03:52, Benson Fung benson.red...@gmail.com wrote:
 
  Good, Michael.
 
  'context' is used to distinguish which part of the UI which will be
  validated, right? ?The customer will ask if they have 1 rules in
  the rulebase. ?And some of them are redundant, so they want to make
  some of the rules share with several part of UI, e.g. ?editbox 6,
  editbox 7 and editbox 8 these 3 boxes' value range is within 0 and
  600. ?Therefore, Rule3 can be shared for these 3 editbox validation,
  right? ?However, for the context variable 

Re: [rules-users] Problem with rule: Unexpected exception executing action org.drools.reteoo.PropagationQueuingNode$PropagateAction@631b86c7

[quivler]

Hey,

yes you are right.
Should be or instead of the implicit and.
I will correct that and maybe I can circumvent the problem.
JIRA and test case are already postet under 
https://issues.jboss.org/browse/JBRULES-2957
https://issues.jboss.org/browse/JBRULES-2957 .
Thanks for your help.

Regards.
Armin

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Re: [rules-users] Drools Guvnor with JasperReport

[Daniel Negreiros]

I didn't know about that.
thank  you a lot.

2011/4/14 Geoffrey De Smet ge0ffrey.s...@gmail.com

 -Xmx does not affect the perm gem space, it stays on 64m

 use instead
 -XX:MaxPermSize=512m


 Op 14-04-11 16:17, danielnb schreef:
  Hi guys.
 
  I have a problem using guvnor + jasperreport, i always receive perm gem
  space.
 
  I tried many forums, all of them said to set jvm memory up, like this :
 
  -Xms1024m -Xmx1024m
 
  I did it and keep getting the perm gem space error.
 
  I want to know if anyone of you guys have been through this problem, if
 you
  have some ideas how can i solve it.  anything that might help.
 
  Thank you.  :D
 
 
 
 
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 --
 With kind regards,
 Geoffrey De Smet


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