date:20130509

While Deploying guvnor 5.5.1 -Snapshot on websphere 7.0 i am getting the
following error


[5/9/13 12:11:18:521 IST] 0007 AdminHelper   A   ADMN1009I: An attempt
is made to start the drools-guvnorEAR application.
[5/9/13 12:11:18:568 IST] 0007 CompositionUn A   WSVR0190I: Starting
composition unit WebSphere:cuname=drools-guvnorEAR in BLA
WebSphere:blaname=drools-guvnorEAR.
[5/9/13 12:11:51:421 IST] 0007 ApplicationMg A   WSVR0200I: Starting
application: drools-guvnorEAR
[5/9/13 12:11:51:421 IST] 0007 ApplicationMg A   WSVR0204I: Application:
drools-guvnorEAR  Application build level: Unknown
[5/9/13 12:11:51:811 IST] 0007 webappI
com.ibm.ws.webcontainer.webapp.WebGroupImpl WebGroup SRVE0169I: Loading Web
Module: JBoss Guvnor for Drools.
[5/9/13 12:11:52:076 IST] 0007 InjectionProc E   CWNEN0044E: A resource
reference binding could not be found for the BeanManager resource reference,
defined for the JBoss Guvnor for Drools component.
[5/9/13 12:11:53:074 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.52.5753476655115778206616.txt
com.ibm.ws.injectionengine.InjectionEngineImpl.processBindings 480
[5/9/13 12:11:53:121 IST] 0007 InjectionEngi E   CWNEN0011E:  The
injection engine failed to process bindings for the metadata.
[5/9/13 12:11:53:215 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.53.1839095875068220164390.txt
com.ibm.ws.util.ComponentNameSpaceHelper.populateJavaNameSpace 640
[5/9/13 12:11:53:215 IST] 0007 ComponentName E   CNTR0125E: Unable to
process injection information for class: [class
org.drools.guvnor.server.repository.SafeWeldListener].
[5/9/13 12:11:53:386 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.53.2612645496587947147575.txt
com.ibm.ws.webcontainer.webapp.WebGroup 131
[5/9/13 12:11:53:386 IST] 0007 webappE
com.ibm.ws.webcontainer.webapp.WebGroupImpl WebGroup SRVE0015E: Failure to
initialize Web application JBoss Guvnor for Drools
[5/9/13 12:11:53:558 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.53.3864474793422569466133.txt
com.ibm.ws.webcontainer.WebContainer 736
[5/9/13 12:11:53:651 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.53.5581434492717138337900.txt
com.ibm.ws.runtime.component.WebContainerImpl.install 124
[5/9/13 12:11:53:683 IST] 0007 DeployedAppli W   WSVR0206E: Module,
drools-guvnor.war, of application,
drools-guvnorEAR.ear/deployments/drools-guvnorEAR, failed to start
[5/9/13 12:11:53:683 IST] 0007 ApplicationMg W   WSVR0101W: An error
occurred starting, drools-guvnorEAR
[5/9/13 12:11:53:683 IST] 0007 ApplicationMg A   WSVR0217I: Stopping
application: drools-guvnorEAR
[5/9/13 12:11:53:714 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.53.7148569466503349536987.txt
com.ibm.ws.wsaddressing.urimap.EndpointMappingListener 1:196:1.8
[5/9/13 12:11:54:010 IST] 0007 ApplicationMg A   WSVR0220I: Application
stopped: drools-guvnorEAR
[5/9/13 12:11:54:322 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.54.0106549968453388597889.txt
com.ibm.ws.runtime.component.ApplicationMgrImpl 1449
[5/9/13 12:11:54:322 IST] 0007 CompositionUn E   WSVR0194E: Composition
unit WebSphere:cuname=drools-guvnorEAR in BLA
WebSphere:blaname=drools-guvnorEAR failed to start.
[5/9/13 12:11:54:447 IST] 0007 DMAdapter I
com.ibm.ws.ffdc.impl.DMAdapter getAnalysisEngine FFDC1009I: Analysis Engine
using data base: D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\properties\logbr\ffdc\adv\ffdcdb.xml
[5/9/13 12:11:54:556 IST] 0007 FfdcProvider  W
com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident
emitted on D:\Program
Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_6f6e6f6e_13.05.09_12.11.54.3535465789859844096183.txt
com.ibm.ws.management.AdminServiceImpl.invoke 679
[5/9/13 12:11:54:556

Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

2013-05-09 Thread mohdejaz74

knowledge-api-5.5.0.Final.jar
knowledge-internal-api-5.5.0.Final.jar
drools-compiler-5.5.1-SNAPSHOT.jar
drools-core-5.5.1-SNAPSHOT.jar

4 times kb unlock/unlock is due to 4 objects inserted into session. After
5th insert it crashes. 5 objects are always inserted into session before
fireAllRules is invoked. It does'nt crash if no rule is added/updated.

RuleRunner inserts them - 5th object is the actual model object against
which all rules are run

http-8084-2 and 2967417 are same; i just rename thread once I've serialized
the model object to take the id.

I've noticed that the four times lock/unlock happens immediately after KB is
modified (ie. rule is removed and added).

General flow of RuleRunner is ...

read xml payload from HttpServletRequest

create model object from xml

set thread name to model.id

get lock on kba (kba is my wrapper class to control access to kb)

get stateful session

session.insert( obj1 )

session.insert( obj2 )

session.insert( obj3 )

session.insert( obj4 )

fact_handle = session.insert( model )

iterate through a list of agenda and set focus to agenda

sesssion.fireAllRules()

retract fact_handle from session

dispose session

release lock on kba

Ejaz

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[rules-users] Use of the binding variable

Hi,

I am having little bit difficulty in understanding  binding variable
concept in the guvnor. During our POC a business user asked me question
around this and i was able to save myself by telling them that the binding
variable is used in case you want use the fact again in Then statement.
(This is how i see it in the examples of rules). 

Can anyone please explaining me the real use of the binding variable so that
i can help my business partner understand it properly?

Thank you for your help in advance

Isha



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Re: [rules-users] Use of the binding variable

2013-05-09 Thread Esteban Aliverti

What you have described is half of the usage of binding variables. You can
bind a variable to a fact or to individual fields of a fact. You can then
use those variables in the LHS or the RHS of your rules.
For example:

1.- Find different Person objects

when
  $p1: Person($name1: name)
  $p2: Person($name2: name, *this != $p1*)
then
  System.out.println(Found +$p1+ with name '+$name1+' and +$p2+ with
name '+$name2+');
end

Regards,





Esteban Aliverti
- Blog @ http://ilesteban.wordpress.com


On Thu, May 9, 2013 at 3:08 PM, IPatel ishita.pa...@usbank.com wrote:

 Hi,

 I am having little bit difficulty in understanding  binding variable
 concept in the guvnor. During our POC a business user asked me question
 around this and i was able to save myself by telling them that the binding
 variable is used in case you want use the fact again in Then statement.
 (This is how i see it in the examples of rules).

 Can anyone please explaining me the real use of the binding variable so
 that
 i can help my business partner understand it properly?

 Thank you for your help in advance

 Isha



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Re: [rules-users] Use of the binding variable

Sorry to ask here, but then what about :=?



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Re: [rules-users] How to write Hibernate query lang(HQL) in .DRL file

Hi,

please visit the below link 

http://magazine.redhat.com/2008/07/11/jboss-drools-meets-hibernate/

Thanks,
Abhinay



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Re: [rules-users] Use of the binding variable

Hi,

Can you please elaborate your query about :=?

Thanks,
Abhinay



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[rules-users] Agenda-group in fact insert time

Hi, I just noticed that even I have different agenda-groups, all groups are
evaluated during fact inset time.

In an extreme case, if I have 1000 rules in agenda-group A, and 1 rule in
agenda-group B
even though I just want to fire the 1 rule in agenda-group B by adding
AgendaFilter in fireAllRules()
all those 1000 rules in agenda-group A will be evaluated (i.e. methods in
the when part are being called)
even worst if I have complex logic in the when part for these 1000 rules,
e.g. accumulate/from, not to mention eval

Isn't that quite a performance impact? And forcing people to put their
logic/checking/matching in the then part?

How would you justify this? Or is there something I've missed that you can
actually evaluate the rule in agenda-group B ONLY, when fact is being
inserted?

Thank you



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Re: [rules-users] Agenda-group in fact insert time

This thing even happens when we are trying to call a function in the when
part. Even though the rule doesnt gets fired, the function is called and the
logic inside it gets executed.

Regards,
Abhinay



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Re: [rules-users] Use of the binding variable

Hi, it would be the same question: How would you use :=? Any use case?
Situation? Good example?

I know I can use := in functions as a return parameter to be used in the
then part.
But thats the only use case I can think of.

Thank you



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Re: [rules-users] Use of the binding variable

Hi,

Our business partners will be using Guvnor to write the business rules so i
am also not sure what is :=?.

If you can explain that will be good.

Thank you
Isha



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[rules-users] [Planner] Planning problem - looking for tips, and advices for complicated case

2013-05-09 Thread Mz

Hello,
I'm having a problem to plan my solver, I'm wondering if it's possible to
configure the solver, so that it picks the best solution from multiple
collections of planning variables. Here is an example, to be more precise:

I have tried different approaches but with no luck... Tried to mix all of
the values together identifying them with a collection ID, and setting in
rules a negative score for the ones that are not from the same collection,
but its very inefficient, and the solver never stops (despite the fact that
the timeout was set for 120sec).

I was thinking about using multiple @PlanningEntities, but as far as I know
it is not supported, so I have resigned from this idea.

I have also tried using @ValueRange type FROM_PLANNING_ENTITY_PROPERTY, and
in MoveFactory I have changed planningEntityProperty according to the
collection I was using, but it led to exception Corrupted Undo Move, and
all in all I think it was a bad idea.

My last idea, which I have not tested yet, is to make two different solvers,
one would find best solution for the given collection, and from all of the
best solutions from these collections, the next solver would pick the best
one, but I think this might be a very inefficient way of doing it.

I'm really sorry if I made this post very hard to understand, but my problem
is a bit more complicated then it sound, and its hard to describe it :P I
would appreciate any tips/ideas how I could configure/plan my solver, and
rules so it would work better.

Thanks in advance,
Mateusz

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Re: [rules-users] Agenda-group in fact insert time

Thats ok, because if you dont call your function, you dont know if that rule
should be fired or not.

But I am concerning about agenda-group, where I know exactly one or more
groups or rules will not be fired but they are still being evaluated.
I ended up moving all the matching/checking to the then part for all my
rules to speed things up.
Now my when part is super clear



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Re: [rules-users] Use of the binding variable

Sorry, I am not using Guvnor, didnt know you dont have :=

By the way, do your partner need to pay for a license fee to use Guvnor?
My company is not using Guvnor because they say there is a license fee to
use Guvnor



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Re: [rules-users] Use of the binding variable

Hi,

I am still trying to convinece them to use the tool. I was under the
impression that this tool is open source and no need to pay any license
cost. It is interesting to find out that there is a cost associated with it.

Does anyone know what other costs are associated with using this tool??

Thank you
Isha



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Re: [rules-users] Agenda-group in fact insert time

2013-05-09 Thread Wolfgang Laun

One of the benefits of the Rete algorithm is its capability (given that
the network is built properly) of not having to evaluate identical
conditions occuring in several rules individually. This would be
thwarted by blocking the evaluation of all rules except the ones in
the current group.

Also, consider what should happen after one group becomes active,
some rules fire and another group is activated. Should all updates
be ignored for the rules of the first group? So, when this group becomes
active again, all rules have to be evaluated from scratch?

There might be scenarios where the approach for evaluating rules
in batches would be more efficient, but these might be solved using
a completely different approach.

-W

On 09/05/2013, Sonata plz.write...@gmail.com wrote:
Thats ok, because if you dont call your function, you dont know if that
rule
should be fired or not.

But I am concerning about agenda-group, where I know exactly one or more
groups or rules will not be fired but they are still being evaluated.
I ended up moving all the matching/checking to the then part for all my
rules to speed things up.
Now my when part is super clear

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Re: [rules-users] Use of the binding variable

2013-05-09 Thread Michael Anstis

There are no licensing fees if you download and use the JBoss community
version: http://www.jboss.org/drools/downloads

You can buy maintenance/support from Red Hat; and I believe there are other
companies providing paid-for support.



On 9 May 2013 15:13, IPatel ishita.pa...@usbank.com wrote:

 Hi,

 I am still trying to convinece them to use the tool. I was under the
 impression that this tool is open source and no need to pay any license
 cost. It is interesting to find out that there is a cost associated with
 it.

 Does anyone know what other costs are associated with using this tool??

 Thank you
 Isha



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[rules-users] understanding the use of Functions in Guvnor

Hi,

I am trying to learn how to call/use functions in When/Then that are defined
within guvnor tool itself.

Here is my example (I know it is really silly example but just trying to
stick with something very simple)
Function is written as follows:
http://drools.46999.n3.nabble.com/file/n4023759/5-9-2013_11-21-10_AM.jpg 

Somehow the invoke method screen does not show my function.
http://drools.46999.n3.nabble.com/file/n4023759/5-9-2013_11-25-54_AM.jpg 

Any ideas how to make my function display under the invoke method drop down
list.

Thank you



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Re: [rules-users] [Planner] Planning problem - looking for tips, and advices for complicated case

2013-05-09 Thread Geoffrey De Smet

On 09-05-13 16:00, Mz wrote:
Hello,
I'm having a problem to plan my solver, I'm wondering if it's possible to
configure the solver, so that it picks the best solution from multiple
collections of planning variables. Here is an example, to be more precise:
Interesting use case. Are you free to explain the practical appliance a
bit more so we can understand it better?

I have 3 planning variables: X, Y, Z. and many collections of values of
these variables. For example, collection A contains three X values, five Y
values, and two Z values; other collection would contain different values
etc. And the problem is that the values from different collections can't be
mixed with each other, and I don't know how to prevent that.
A) One approach would be to use a custom move factory/iterator that
generates moves
which move all 3 variables to any value for which the 3 values stem from
the same collection.
If you only use that move selector, you wouldn't even need to check that
the variables use the same collection with a constraint (as it would be
build-in).

I have tried different approaches but with no luck... Tried to mix all of
the values together identifying them with a collection ID, and setting in
rules a negative score for the ones that are not from the same collection,
but its very inefficient,
B) Normally, I 'd recommend this approach, but indeed it will be very
inefficient.
The metaheuristics would be continually score trapped (see latest docs
on score trap), making it unlikely that they switch collection.
Mixing in custom moves (like the one from approach A) with normal moves
would make this approach viable too.

C) A drastic, but simpler approach, if those collections are always
small (otherwise it will run into scaling issues), is the following:
Use a single variable. Create a cross product of all 3 values in each of
the collections and use such a combination as the value.
For example, collection A results into 3 * 5 * 2 = 15 combinations. Add
the results of combinations of the other collections and that's the
range for that single variable.
and the solver never stops (despite the fact that
the timeout was set for 120sec).
That sounds like a bug. Older versions had this problem, but recent ones
don't (I don't recall for which version it was fixed).
Enable trace logging and see what the logging says.

I was thinking about using multiple @PlanningEntities, but as far as I know
it is not supported, so I have resigned from this idea.
I don't see how multiple @PlanningEntities would fix it.
Support for multiple @PlanningEntities is getting better since
6.0.0.Beta1, but not perfect yet.

Thanks in advance,
Mateusz

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Re: [rules-users] Use of the binding variable

2013-05-09 Thread Davide Sottara

The unification operator := is a combination of the binding operator
: and the equality operator ==.
In fact, it behaves as either, depending on the context:

In this example, we are looking for two different Persons with the same
name:

rule Pairs
when
$p := Person( $name := name )   
Person( this != $p, $name := name )
then
System.out.println( We have two persons with the same name :  +
$name );
end

The LHS is equivalent to:

$p : Person( $name : name )
Person( this != $p, name == $name )

The first time a variable such as $name is used with :=, it works as
:. Any time later, since the
variable now has a value assigned to it, := will work as ==.

Apparently, this operator may seem redundant and useless :) but it is
actually meant to be used
with **queries**. For example:

query personsByName( String $name, Person $p )
$p := Person( $name := name )
end

The arguments ($name, $p) can be BOTH IN and OUT parameters, depending
on the context of
the caller. So, the query can be used in 4 different ways:

IN/IN : Is this Person in the WM and does it have this name?
?personsByName( john, p1 )

IN/OUT : Retrieve all Persons with this name
?personsByName( john, $pers )

OUT/IN : Retrieve this person, if it is in the WM, and return its name
?personsByName( $n, p1 )

OUT/OUT : Retrieve all persons from the WM with their names
?personsByName( $n, $pers )

Fir this reason, it is impossible for the query to know whether, upon
invocation, $name and $p
will be IN - and thus already have a value - or OUT. So, the unification
operator := is necessary
because of its polymorphic ability to behave as : or == as appropriate.

Best
Davide





On 05/09/2013 06:51 AM, Sonata wrote:
 Hi, it would be the same question: How would you use :=? Any use case?
 Situation? Good example?

 I know I can use := in functions as a return parameter to be used in the
 then part.
 But thats the only use case I can think of.

 Thank you



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[rules-users] Grid Node Null Pointer Exception

2013-05-09 Thread Jason Barto

I am attempting to, using Camel, receive AMQP messages from RabbitMQ and
pass them into a Drools Fusion engine.  As my starting point I have a 4
line bit of Java code that instantiates Camel and passes it the camel XML
pasted below.  Is it apparent to anyone where I've gone wrong that I
receive a NPE while the system is calling the init method for 'node1'?

?xml version=1.0 encoding=UTF-8?

beans xmlns=http://www.springframework.org/schema/beans;
   xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
   xmlns:rabbit=http://www.springframework.org/schema/rabbit;
   xmlns:drools=http://drools.org/schema/drools-spring;
   xsi:schemaLocation=
   http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
   http://www.springframework.org/schema/rabbit
http://www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd
   http://drools.org/schema/drools-spring
http://drools.org/schema/drools-spring.xsd
   http://camel.apache.org/schema/spring
http://camel.apache.org/schema/spring/camel-spring.xsd;

bean id=droolsPolicy class=org.drools.camel.component.DroolsPolicy
/
drools:grid-node id=node1/
drools:kbase id=kbase1 node=node1
drools:configuration
drools:mbeans enabled=true/
/drools:configuration
drools:resources
drools:resource type=DRL
source=classpath:drools-rules.drl/
/drools:resources
/drools:kbase

drools:ksession id=ksession1 type=stateful name=ksession1
kbase=kbase1 node=node1/

bean id=drools class=org.drools.camel.component.DroolsComponent/

bean id=jsonMessageConverter
class=amqp.spring.converter.XStreamConverter/
bean id=textMessageConverter
class=amqp.spring.converter.StringConverter/
bean id=messageConverter
class=amqp.spring.converter.ContentTypeConverterFactory
property name=converters
map
entry key=application/json
value-ref=jsonMessageConverter/
entry key=application/xml
value-ref=textMessageConverter/
/map
/property
property name=fallbackConverter ref=textMessageConverter/
/bean

rabbit:connection-factory id=connectionFactory host=127.0.0.1
port=5672 /
rabbit:template id=amqpTemplate
connection-factory=connectionFactory message-converter=messageConverter
reply-timeout=6/
rabbit:admin connection-factory=connectionFactory/

camelContext xmlns=http://camel.apache.org/schema/spring;
route
from uri=stream:in?promptMessage=Enter something: /
to uri=spring-amqp:cml.direct:a.b.c?type=direct/
/route
route
from uri=spring-amqp:cml.direct:springd:a.b.c?type=direct /
transform
simple${body.toUpperCase()}/simple
/transform
to uri=spring-amqp:cml.topic:a.b.c/
/route
route
from uri=spring-amqp:cml.topic:springt:#?type=topic /
to uri=stream:out/
/route
/camelContext

/beans

I'm still extremely new to Drools, Camel, BRMS and my ultimate goal is to
have BRMS running, receiving events from RabbitMQ.  This is one step along
my learning to achieve that goal so any help that can be offered is very
much appreciated.

It's potentially worth noting that the JAR files I'm running for this are
from the Drools-jBPM Integration 5.5 distribution.

Sincerely,
Jason
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Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

2013-05-09 Thread Davide Sottara

Ok, more pieces in the puzzle :). I still do not understand why you are
getting lock/unlock on insertions.
In 5.5.1-SNAPSHOT and 5.6.0-SNAPSHOT, those events are fired only when a
WRITE lock is acquired
to modify the RETE. Insertions and fireAllRules use READ locks that do
not generate that kind of events.

Are you getting them even when you run the rules in Eclipse?

Notice that WRITE locks are also acquired when STATELESS sessions are
used, rather than STATEFUL ones,
(which btw was dcrissman's case)... but you are using STATEFUL sessions,
so this shouldn't be the case, right?
Otherwise, I'd really like to know why the lock is acquired... I would
go as afar as forcing a controlled exception
in the KBEventListener to see the stack trace during one of those
insertions.

(So far, I have assumed that the maintenance actions on the KB are not
triggered by the rules themselves,
but by some other control module)

Davide

On 05/09/2013 05:44 AM, mohdejaz74 wrote:
knowledge-api-5.5.0.Final.jar
knowledge-internal-api-5.5.0.Final.jar
drools-compiler-5.5.1-SNAPSHOT.jar
drools-core-5.5.1-SNAPSHOT.jar

RuleRunner inserts them - 5th object is the actual model object against
which all rules are run

http-8084-2 and 2967417 are same; i just rename thread once I've serialized
the model object to take the id.

I've noticed that the four times lock/unlock happens immediately after KB is
modified (ie. rule is removed and added).

General flow of RuleRunner is ...

read xml payload from HttpServletRequest

create model object from xml

set thread name to model.id

get lock on kba (kba is my wrapper class to control access to kb)

get stateful session

session.insert( obj1 )

session.insert( obj2 )

session.insert( obj3 )

session.insert( obj4 )

fact_handle = session.insert( model )

iterate through a list of agenda and set focus to agenda

sesssion.fireAllRules()

retract fact_handle from session

dispose session

release lock on kba

Ejaz

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[rules-users] Odd behavior on timeInMillis after[15m, 96h] otherTimeInMillis

2013-05-09 Thread ScalaEnthusiast

I am attempting to use the after[start, end] construct with two time values
being returned in milliseconds.

We are effectively using Drools 5.3 (BRMS 5.3.1). 

Here is what I have (field names changed, etc due to nature of data):

//-

global String someInsertedConstant;
global Calendar myCurrentTime;// calculated just before inserting as
global.


rule compare time in millis
dialect java
when
 $someObject : SomeObjectClass ( field1 == someInsertedConstant,
field2 == null,
   
myCurrentTime.timeInMillis after[15m, 96h]
someObject.getTime().getTimeInMillis ) from entry-point SomeEntryPoint
 then
  System.out.println(Boo-yah!!!);

//-

This does not send out a Boo-yah!!! as I would expect, when myCurrentime is
15 minutes or more past someObject.getTime(). However, I have another rule
just like this, where the only difference is the after is [0m,15m] instead,
and it gives a Boo-yah!!! as it should when myCurrentTime is up to 15
minutes past someObject.getTime(). Both rules are together in the same
package.

Am I missing something here? In the first case, after[15m, 96h], I can
change that line to manually subtract the two times as longs and compare
against being = 90 and it fires as it should. This appears to be a bug,
but I am not entirely sure as I am fairly new to the rule world.

What am I missing?

Thanks,

ScalaEnthusiast







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Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

2013-05-09 Thread mohdejaz74

I have modify clauses in the rules - would that be the reason ?

However, this happens only once ... immediately after KB is initialized

Maintenance actions are not triggered by rules ... add/update/delete is
outside the rules

Ejaz



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Re: [rules-users] Agenda-group in fact insert time

Thank you so much Wolfgang (is that your name? I saw that in some other
posts. Cool )!

Yes, now I know the benefit of this approach, now I am wondering why we are
only left with one option?

Could I propose a new and easy API that you can create a session from kbase
with rules in a particular agenda-group(s)? Then start inserting fact to
that session, so that rules in other agenda-groups will not be evaluated
under this user's choice.

Until then, do you think maintaining different kbases for each agenda-group
(i.e. one agenda-group in one kbase) is a good idea?

When rules in an agenda-group are needed to be fired, that kbase is used to
create session(s). When rules across more than one agenda-groups are needed
to be fired, those kbases can be added together to form a bigger kbase to
create a session.

This method is not perfect nor an ultimate solution. This is just a trade
off for performance vs flexibility. By doing that, we for sure cannot write
dynamic agenda-group focusing rules (those rules will not break down, just
there will be no such group for that session) and which groups to fire must
be planned beforehand.




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Re: [rules-users] Use of the binding variable

Again, thank you so much Davide, you have helped me to solve another big
problem again!

The examples are very great, should have been added to the user manual.

And yes, when I said I know := can be used in function to return parameter
for the then part, I meant QUERY, not function. This would be the IN/OUT
case. The only case that I know. Thank you for the crazy idea (in a good
way) for the other three use cases! 



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Re: [rules-users] Use of the binding variable

And yes, thank you Michael for clarifying the licensing fee question.
Not sure why my company said that. May be it is different when it comes to
business 



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Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

2013-05-09 Thread Davide Sottara

No, modify is altering the working memory, but not the knowledge base.
Guessing is not going to take us anywhere... we need to debug the engine
and, in particular,
the org.drools.common.ConcurrentNodeMemories class.
Would you be able to download the source code from github and compile
it, to build a
tweaked version of the engine?


On 05/09/2013 03:23 PM, mohdejaz74 wrote:
 I have modify clauses in the rules - would that be the reason ?

 However, this happens only once ... immediately after KB is initialized

 Maintenance actions are not triggered by rules ... add/update/delete is
 outside the rules

 Ejaz



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Re: [rules-users] Deploying guvnor 5.5.1 Snapshot on websphere AS 7.0