date:20100505

[rules-users] Need Sample Java Code

2010-05-05 Thread ashok kumar

Hi Team,

I need sample java code that on Drools v5.0.. can anyone share the rule XML
file format along with the sample code
that fires the rules defined in XML? Do i need to save the file with
'.xml' extension or it will be XML data in .drl file?
Please throw some light on this..

Thanks,
JFly.
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Re: [rules-users] expert: usage of ruleflow-groups

2010-05-05 Thread miguel machado

Hi again,

Thank you for clearing that up. I didn't think it worked that way because
i've tried it before and it didn't work. Anyway, according to what you're
saying...

* this is the stack as soon as i insert my objects: | MAIN |

* this is the stack as soon as i setFocus on a specific agenda-group: |
FOCUSED_GROUP | MAIN | (from left to right)

* as soon as all activations from FOCUSED_GROUP fire, that agenda-group is
popped out of the stack and the rule engine fires the remaining activations
from MAIN

Is this the way it works? I've tried this before with no success. I get
rules firing from agenda-groups that *are not focused before* (besides MAIN,
of course). Maybe this has something to do with the rules being declared in
XML? Or some kind of bug?

Thank you.
_ miguel




On Wed, May 5, 2010 at 6:40 AM, Wolfgang Laun wolfgang.l...@gmail.comwrote:

  @Wolfgang:
  My problem is that i cannot have the different rule groups stacked. I may
 do
  as you suggested, but i'll have rules firing from other agenda-groups
 after
  the first agenda-group activations are all gone (because they go into the
  stack as well, right?).

 No, no, no! Nothing goes on the stack unless you setFocus()!

 What i'm looking for is a way to isolate the
  execution and just fire the rules within a specific set (aka just one
  group). Does this make any sense?

 This is *exactly* what my sketchy statement sequence does, in
 an existing application.
 -W

  Thank you for your support. I appreciate all the help i can get.
  _ miguel
 
 
 
  On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun wolfgang.l...@gmail.com
  wrote:
 
  I've been using agenda groups without any trouble for a similar problem,
  doing
   setFocus( ... );
   insert( ... );... insert( ... );
   fireAllRules();
  repeatedly.
 
  You don't have to be afraid of the focus stack growing indefinitely:You
  control
  the push (setFocus()), and if an agenda group's activations are all
  gone, the
  group is automatically popped from the stack.
 
  -W
 
  2010/5/4 Miguel Machado mls.mach...@gmail.com:
   Hi there,
   I'm having some trouble implementing the desired workflow of rule
 firing
   in
   an application using drools expert. I've read the thread about the
   difference between ruleflow groups and agenda groups, but it is still
   unclear to me how to achieve what i need.
   What i intend to have is the ability to fire a specific set of rules
   according to the object i'm inserting into the ksession.
   I do not want to use agenda-groups because it stacks all the agenda
   groups
   declared on the rule file (as far as i understand) and therefore it
 may
   fire
   activations i do not want to be fired. Instead, i want to isolate them
   completely. I tried using ruleflow groups for this, but i cannot find
 a
   way
   to activate a specific group programmatically, before calling
   fireAllRules(), the way i can with agenda-groups (setFocus() method).
   That being said, i'm asking for help in trying to use either one of
   ruleflow/agenda groups or even both in order to get things working the
   way i
   described.
   Thanks in advance,
   _ miguel
  
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Re: [rules-users] Getting an Error While Executing Rule in Drools 5.0

2010-05-05 Thread miguel machado

@puneet it may be a good ideia memory wise. I'm doing it right now, in order
to compile rules just once.

_ miguel

2010/5/5 Puneet duggal duggalpu...@gmail.com

@ Nikhil,

I am not sure weather it a good practice to seralize a package and store it
, i am new to it and i am storing the drl files in db .
Can we retrive our DRL file after retriving the packge from database.??

On 5/4/10, Nikhil S. Kulkarni nikhil.kulka...@mastek.com wrote:

Hi,

I have compiled some rules and added it in packages. Then
I serialized those packages and stored in database in the form of CLOB data

Now I am able to get Packages back from database and loaded it in
RuleBase.

But while executing Rule, I am getting the following Exception.

java.lang.NullPointerException

at
org.drools.base.ClassFieldReader.getValue(ClassFieldReader.java:91)

at
org.drools.base.evaluators.EqualityEvaluatorsDefinition$StringEqualEvaluator.evaluate(EqualityEvaluatorsDefinition.java:1962)

at
org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:92)

at
org.drools.rule.OrCompositeRestriction.isAllowed(OrCompositeRestriction.java:25)

at
org.drools.rule.MultiRestrictionFieldConstraint.isAllowed(MultiRestrictionFieldConstraint.java:97)

at
org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:143)

at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:360)

at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:344)

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.reteoo.ReteooStatelessSession.execute(ReteooStatelessSession.java:201)

The similar kind of issue is already logged by someone.

Please inform If anyone has an idea about this.

Waiting for Reply.

Thanks Regards,

Nikhil S. Kulkarni

MASTEK LTD.
Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List.
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Re: [rules-users] expert: usage of ruleflow-groups

2010-05-05 Thread Wolfgang Laun

2010/5/5 miguel machado mls.mach...@gmail.com:
 Hi again,
 Thank you for clearing that up. I didn't think it worked that way because
 i've tried it before and it didn't work. Anyway, according to what you're
 saying...
 * this is the stack as soon as i insert my objects: | MAIN |
 * this is the stack as soon as i setFocus on a specific agenda-group: |
 FOCUSED_GROUP | MAIN | (from left to right)
 * as soon as all activations from FOCUSED_GROUP fire, that agenda-group is
 popped out of the stack and the rule engine fires the remaining activations
 from MAIN
 Is this the way it works? I've tried this before with no success. I get
 rules firing from agenda-groups that *are not focused before* (besides MAIN,
 of course). Maybe this has something to do with the rules being declared in
 XML? Or some kind of bug?

If you don't have auto-focus, rules from other agenda groups should not fire.
XML should not matter. A bug might be possible, e.g., due to misinterpretation
of the rules in XML.
-W

 Thank you.
 _ miguel



 On Wed, May 5, 2010 at 6:40 AM, Wolfgang Laun wolfgang.l...@gmail.com
 wrote:

  @Wolfgang:
  My problem is that i cannot have the different rule groups stacked. I
  may do
  as you suggested, but i'll have rules firing from other agenda-groups
  after
  the first agenda-group activations are all gone (because they go into
  the
  stack as well, right?).

 No, no, no! Nothing goes on the stack unless you setFocus()!

 What i'm looking for is a way to isolate the
  execution and just fire the rules within a specific set (aka just one
  group). Does this make any sense?

 This is *exactly* what my sketchy statement sequence does, in
 an existing application.
 -W

  Thank you for your support. I appreciate all the help i can get.
  _ miguel
 
 
 
  On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun wolfgang.l...@gmail.com
  wrote:
 
  I've been using agenda groups without any trouble for a similar
  problem,
  doing
   setFocus( ... );
   insert( ... );... insert( ... );
   fireAllRules();
  repeatedly.
 
  You don't have to be afraid of the focus stack growing indefinitely:You
  control
  the push (setFocus()), and if an agenda group's activations are all
  gone, the
  group is automatically popped from the stack.
 
  -W
 
  2010/5/4 Miguel Machado mls.mach...@gmail.com:
   Hi there,
   I'm having some trouble implementing the desired workflow of rule
   firing
   in
   an application using drools expert. I've read the thread about the
   difference between ruleflow groups and agenda groups, but it is still
   unclear to me how to achieve what i need.
   What i intend to have is the ability to fire a specific set of rules
   according to the object i'm inserting into the ksession.
   I do not want to use agenda-groups because it stacks all the agenda
   groups
   declared on the rule file (as far as i understand) and therefore it
   may
   fire
   activations i do not want to be fired. Instead, i want to isolate
   them
   completely. I tried using ruleflow groups for this, but i cannot find
   a
   way
   to activate a specific group programmatically, before calling
   fireAllRules(), the way i can with agenda-groups (setFocus() method).
   That being said, i'm asking for help in trying to use either one of
   ruleflow/agenda groups or even both in order to get things working
   the
   way i
   described.
   Thanks in advance,
   _ miguel
  
   ___
   rules-users mailing list
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[rules-users] Insert Fact Speed bottleneck

2010-05-05 Thread djb


Hi Drools team,

I wrote a Drools application for my company, which evaluates clinical claim
processing rules.  That is, it checks current medical claims against the
patient's historical claims.

It appears that 95% of the run time is dedicated to inserting facts, which
is presumably when it propagates through the RETE graph, since firing the
rules takes no time.  

But it seems like it's not fast enough.  I made a rule template, which by
trial and error of moving the conditions around, is optimised.  I'm
averaging 310ms, and need it to be under 170ms for it to be viable.

Is there any not-too-technical guide to optimisation somewhere?  (alpha and
beta-nodes scare me a bit).  

Regards,
Daniel


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Re: [rules-users] how exists works exactly?

2010-05-05 Thread Antonio Neto

Any idea? Please...

2010/5/4 Antonio Neto antoniosouzan...@gmail.com

 Hi all,

 I don't know exactly why I have a problem in my exists function. I've
 tried many different ways, but it does not work. Anybody could help me,
 please?


 I have the following rules:

 *rule diff
 when
 $var1: EReference(name == employee)
 $var2: EClass(name == Company, EAllReferences contains $var1)
 not (exists( EPackage(EClassifiers contains $var2 ) ))
 then
 insertLogical(new IntConstraintOccurrence(diff, 10));
 end

 rule ClassesNotReferenced
 when
 $q1 : EClass();
 $q2 : EPackage(EClassifiers contains $q1);
 not( exists ( EReference(EType == $q1) ));
 then
 insertLogical(new IntConstraintOccurrence(ClassesNotReferenced,
 1, $q1));
 end*


 and in my facts (and my EPackage) I have 4 instances of EClass Company
 with a EReference employee, and another EClass Person.  I still have a
 move that removes EClasses in my Drools Solver.

 I need to have only one classe Company after processing. But it removes
 only the EClass Person, when it was supposed to remove one EClass Person
 and 3 ECLasses Company. Leaving one EClass Company in the end.

 The problem is:  when Drools tries to remove a EClass Person it thinks
 that  the EClass Company does not exists. But in fact there are 3 others.

 Any clue about it, please ?

 Thanks

 Bests regards

 Antonio



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Re: [rules-users] expert: usage of ruleflow-groups

2010-05-05 Thread miguel machado

Hi,

Yeah, i think this might be a bug indeed. I just tried converting to DRL
using the dumper and the agenda-group item doesn't show up in the
generated DRL file. It is possible that that this tag isn't being
interpreted for the same reason it isn't being converted into the DRL
format. Can someone please confirm this?

Anyway, if this doesn't work.. is there any kind of workaround? Maybe using
ruleflow-group's or any other technique?

Thank you.
_ miguel



On Wed, May 5, 2010 at 9:11 AM, Wolfgang Laun wolfgang.l...@gmail.comwrote:


 If you don't have auto-focus, rules from other agenda groups should not
 fire.
 XML should not matter. A bug might be possible, e.g., due to
 misinterpretation
 of the rules in XML.
 -W



-- 
To understand what is recursion you must first understand recursion
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Re: [rules-users] Smooks Data Loader uses

2010-05-05 Thread JNaylies


no one could help me?

maybe something is not clear. Please tell me what ;)

Regards
Jérôme
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Re: [rules-users] expert: usage of ruleflow-groups

2010-05-05 Thread Wolfgang Laun

How did you specify the agenda group in the XML? There aren't much
checks being done in XML handling, so it's easy to slip up. Here's how
I interpret the XML schema:

rule name=myrule
  rule-attribute name=agenda-group value=group42/
   ...

-W




2010/5/5 miguel machado mls.mach...@gmail.com:
 Hi,
 Yeah, i think this might be a bug indeed. I just tried converting to DRL
 using the dumper and the agenda-group item doesn't show up in the
 generated DRL file. It is possible that that this tag isn't being
 interpreted for the same reason it isn't being converted into the DRL
 format. Can someone please confirm this?
 Anyway, if this doesn't work.. is there any kind of workaround? Maybe using
 ruleflow-group's or any other technique?
 Thank you.
 _ miguel


 On Wed, May 5, 2010 at 9:11 AM, Wolfgang Laun wolfgang.l...@gmail.com
 wrote:

 If you don't have auto-focus, rules from other agenda groups should not
 fire.
 XML should not matter. A bug might be possible, e.g., due to
 misinterpretation
 of the rules in XML.
 -W



 --
 To understand what is recursion you must first understand recursion

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Re: [rules-users] Insert Fact Speed bottleneck

2010-05-05 Thread Puneet duggal

@ djb ,

Can u tell  me how did u inserted the facts urself ??
Is a  just a simple  assertion or  any  thing else ?



On 5/5/10, djb dbrownel...@hotmail.com wrote:


 Hi Drools team,

 I wrote a Drools application for my company, which evaluates clinical claim
 processing rules.  That is, it checks current medical claims against the
 patient's historical claims.

 It appears that 95% of the run time is dedicated to inserting facts, which
 is presumably when it propagates through the RETE graph, since firing the
 rules takes no time.

 But it seems like it's not fast enough.  I made a rule template, which by
 trial and error of moving the conditions around, is optimised.  I'm
 averaging 310ms, and need it to be under 170ms for it to be viable.

 Is there any not-too-technical guide to optimisation somewhere?  (alpha and
 beta-nodes scare me a bit).

 Regards,
 Daniel


 --
 View this message in context:
 http://drools-java-rules-engine.46999.n3.nabble.com/Insert-Fact-Speed-bottleneck-tp778322p778322.html
 Sent from the Drools - User mailing list archive at Nabble.com.
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Re: [rules-users] Getting an Error While Executing Rule in Drools 5.0

2010-05-05 Thread Puneet duggal

ohk compiling the rule and storing it
its really a good for memory

On 5/5/10, miguel machado mls.mach...@gmail.com wrote:

@puneet it may be a good ideia memory wise. I'm doing it right now, in
order to compile rules just once.

_ miguel

2010/5/5 Puneet duggal duggalpu...@gmail.com

@ Nikhil,

I am not sure weather it a good practice to seralize a package and store
it , i am new to it and i am storing the drl files in db .
Can we retrive our DRL file after retriving the packge from database.??