Alternate Flow Creation
by srikanthp
In process flow i need to execute alternate path based on some external
event. How can i do this ?
For Ex:In a process (shown below) billing activity was implemented using
work-item definition.
Process goes to next node i.e. Do some task only after completing billing
activity. I am calling completeWorkItem method after actually billing is
done in the application, so that process goes to next node.
http://drools-java-rules-engine.46999.n3.nabble.com/file/n1909549/flow.jpg
But i have a requirement of once process is started (in the middle of
billing activity) user may choose to cancel the process. So based on an
external event i should do a compensating activity of billing and terminate
the process. How do i trigger this alternate path?
Thanks in advance for your help.
Regards,
Srikanth
--
View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Alternate-Flow-Creati...
Sent from the Drools - User mailing list archive at Nabble.com.
15 years, 10 months
8Puzzle problem with Drools Planner
by Anderson Rocha
Hi all,
I am wondering if Drools Planner can handle the 8Puzzle problem. I once
resolved it with the A* search. But I do not know these simulated annealing
and tabu search that Drools Planner implements. So I am having a "Getting
stuck in local optima" problem, and depending on the start sollution it gets
into loop. But if you enter a really simple start solution it resolves,
because it choose the best scores until finish with few steps. If some one
can help, let me know what I can send (source code, configuration files) to
get some help.
Thanks,
Anderson
15 years, 10 months
Re: [rules-users] Drools STREAM Mode performance with rather simple rule
by Roess. Oliver
Hello again!
Thanks for the heads up, Wolfgang.
Basically, what I try to create is some sort of batch window, which is
not really implemented into Drools Fusion if I remember correctly.
It doesn't HAVE to be A, B, C in that particular order which I specified
in my last post, but the rule shall only match each A, each B, and each
C once. So what would you recommend as a best practise to build that
rule? Or is my rule correct? Actually, I don't like the fact, that I
have to complete the rule by retracting my events in the RHS of the
rule. I'd rather have a batch window specified in the LHS. Thanks in
advance.
Best regards,
Oliver
_________________________________________________________________________
SEEBURGER AG Vorstand/Seeburger Executive Board:
Sitz der Gesellschaft/ Bernd Seeburger, Axel Haas, Michael Kleeberg
Registered Office:
Edisonstrasse 1 Vorsitzender des Aufsichtsrats/Chairperson of
D-75015 Bretten the Seeburger Supervisory Board:
Tel.: 07252 / 96-0 Dr. Franz Scherer
Fax: 07252 / 96-2222
Internet: http://www.seeburger.de Registergericht/Commercial Register:
e-mail: info(a)seeburger.de HRB 240708 Mannheim
_________________________________________________________________________
Dieses E-Mail ist nur fur den Empfanger bestimmt, an den es gerichtet
ist und kann vertrauliches bzw. unter das Berufsgeheimnis fallendes
Material enthalten. Jegliche darin enthaltene Ansicht oder Meinungs-
au?erung ist die des Autors und stellt nicht notwendigerweise die
Sind Sie nicht der Empfanger, so haben Sie diese E-Mail irrtumlich
erhalten und jegliche Verwendung, Veroffentlichung, Weiterleitung,
Abschrift oder jeglicher Druck dieser E-Mail ist strengstens untersagt.
Weder die noch der Absender (Oliver Roess)
ubernehmen die Haftung fur Viren; es obliegt Ihrer Verantwortung,
die E-Mail und deren Anhange (0) auf Viren zu prufen.
The present email addresses only the addressee which it targets and
may contain confidential material that may be protected by the
professional secret. The opinions reflected herein are not necessarily
If you are not the addressee, you have accidentally got this email and
are not enabled to use, publish, forward, copy or print it in any way.
Neither the , nor the sender (Oliver Roess) are
liable for viruses, being your own responsibility to check this email
and its attachments (0) for this purpose.
_________________________________________________________________________
15 years, 10 months
5.1.1: ArrayIndexOutOfBoundsException in org.drools.core.util.AbstractHashTable
by Lubos
Exception occures at:
org.drools.core.util.AbstractHashTable$HashTableIterator.next(AbstractHashTable.java:317)
in Drools 5.1.1 when calling insert() on just created
StatefulKnowledgeSession.
I found similar issues reported for LeftTupleIndexHashTable, it had to do
with initializing row to -1 instead of 0 or something similar. I see that
fixed in Left/RightTupleIndexHashTable but it seems to me like it is still
present in AbstractHashTable.
The bug occures randomly (inserting the same data), usualy under load. The
index is either -1 or too high. I create multiple sessions in threads from
one KnowledgeBase, sessions are not shared.
Stack trace I got is:
java.lang.ArrayIndexOutOfBoundsException: 16
at
org.drools.core.util.AbstractHashTable$HashTableIterator.next(AbstractHashTable.java:317)
at
org.drools.reteoo.EntryPointNode.updateSink(EntryPointNode.java:323)
at
org.drools.reteoo.ObjectTypeNode.attach(ObjectTypeNode.java:303)
at
org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:257)
at
org.drools.reteoo.ClassObjectTypeConf.<init>(ClassObjectTypeConf.java:92)
at
org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:68)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:981)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:917)
at
org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:251)
I am not sure if this post belongs here, sorry if not.
Thanks for help/suggestions
Lubos
--
View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/5-1-1-ArrayIndexOutOf...
Sent from the Drools - User mailing list archive at Nabble.com.
15 years, 10 months
Re: [rules-users] rules-users Digest, Vol 48, Issue 34
by Dennis Duggan
Wolfgang:
In the rule??
rule "Match"
when
$oRecord1 : MyObject1( )
$oRecord2 : MyObject2(RefID==$oRecord1. RefID )
then
$oRecord1.setStatus( "Matched" );
$oRecord2.setStatus( "Matched" );
modify ( $oRecord1 ) { status = "Matched" };
modify ( $oRecord2 ) { status = "Matched" };
end
I get an error...
__obj__.status cannot be resolved or is not a field
Doesn't the setStatus calls just above update the object?
Thanks!
Dennis
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of rules-users-request(a)lists.jboss.org
Sent: Tuesday, November 09, 2010 3:39 PM
To: rules-users(a)lists.jboss.org
Subject: rules-users Digest, Vol 48, Issue 34
Send rules-users mailing list submissions to
rules-users(a)lists.jboss.org
To subscribe or unsubscribe via the World Wide Web, visit
https://lists.jboss.org/mailman/listinfo/rules-users
or, via email, send a message with subject or body 'help' to
rules-users-request(a)lists.jboss.org
You can reach the person managing the list at
rules-users-owner(a)lists.jboss.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of rules-users digest..."
Today's Topics:
1. Re: Query query... (Dennis Duggan)
2. Re: Query query... (Wolfgang Laun)
----------------------------------------------------------------------
Message: 1
Date: Tue, 9 Nov 2010 14:13:07 -0600
From: Dennis Duggan <dennis(a)esptechnologies.com>
Subject: Re: [rules-users] Query query...
To: "rules-users(a)lists.jboss.org" <rules-users(a)lists.jboss.org>
Message-ID:
<121AF5D37A73F94E98B26D237302319E010A76863B(a)MBX04.exg5.exghost.com>
Content-Type: text/plain; charset="us-ascii"
I have a super interface, that both objects implement.
The matching rule looks like:
rule "Match"
when
$oRecord1 : MyObject1( )
$oRecord2 : MyObject2(RefID==$oRecord1. RefID )
then
$oRecord1.setStatus( "Matched" );
$oRecord2.setStatus( "Matched" );
end
I can breakpoint right after running the query and I see objects with all statuses so the matching rule is firing correctly.
Thanks!
Dennis
Dennis Duggan
Principal Software Engineer, Software Engineering
ESP Technologies Corp. "THE Buy-Side Solution"
One Indian Head Plaza Suite 701, Nashua, NH 03060
603.324.2444 ext. 1304 Office | 603.324.2447 Fax
dennis(a)esptechnologies.com
ESP Technologies, winner 2009 Red Herring North America 100 and 2008 Deloitte Technology Fast 500.
This e-mail and/or attachments may contain privileged, confidential or proprietary information. Unintended recipients should notify the sender immediately and delete. Disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. Brokerage services provided by Electronic Securities Processing (ESP) LLC. Member FINRA, SIPC. This is neither an offer or recommendation to buy or sell any security or other financial instrument. Email compliance(a)esptechnologies.com with questions regarding this disclosure.
From: Dennis Duggan
Sent: Tuesday, November 09, 2010 1:55 PM
To: 'rules-users(a)lists.jboss.org'
Subject: Query query...
I have 2 types of objects in my knowledge base that I am trying to equate. Equality is based on a number of different variables contained in the objects. Once I find equal objects I set a status member in each to "Matched", otherwise it will be "OneKnows" or "TwoKnows".
After I fire the rules I use queries that I call from Java code to get the three different types of objects.
query "OneFirmKnows"
oRecord : MyObject1( status=="OneKnows" )
end
query "TwoKnows"
oRecord : MyObject2( status=="TwoKnows" )
end
query "Matched"
oRecord : MyObject1( status=="Matched" )
end
Each query sends back all objects no matter what the status is. The objects have a getStatus( ) method. What am I doing wrong?
Thanks!
Dennis
15 years, 10 months
Re: [rules-users] Drools STREAM Mode performance with rather simple rule
by Roess. Oliver
Hello again.
Thanks for your test Wolfgang. When I do it like you did, I get approx.
the same results. But you misunderstood my scenario. I don't want to
send ABC x times. Here's what I meant in pseudocode.
for ( i = 0; i < X; i++)
Send Y times A
Send Y times B
Send Y times C
I dropped the idea of calling fireUntilHalt() and now I call
fireAllRules after every single insert, just to be quick. This avoids
the problem of getting random execution durations. Now I produce nearly
constant times every time I execute this. But it is still not very
satisfying. These are just a few hundred events. In a real business
scenario it will be a lot more. Increasing X will cause the time to go
up linearly which is ok, but increasing Y will have the time go up
overproportional, which is not acceptable. We will evaluate this now
with a really good machine. But it would be interesting to see what
results others achieve in this scenario.
Best regards,
Oliver
_________________________________________________________________________
SEEBURGER AG Vorstand/Seeburger Executive Board:
Sitz der Gesellschaft/ Bernd Seeburger, Axel Haas, Michael Kleeberg
Registered Office:
Edisonstrasse 1 Vorsitzender des Aufsichtsrats/Chairperson of
D-75015 Bretten the Seeburger Supervisory Board:
Tel.: 07252 / 96-0 Dr. Franz Scherer
Fax: 07252 / 96-2222
Internet: http://www.seeburger.de Registergericht/Commercial Register:
e-mail: info(a)seeburger.de HRB 240708 Mannheim
_________________________________________________________________________
Dieses E-Mail ist nur fur den Empfanger bestimmt, an den es gerichtet
ist und kann vertrauliches bzw. unter das Berufsgeheimnis fallendes
Material enthalten. Jegliche darin enthaltene Ansicht oder Meinungs-
au?erung ist die des Autors und stellt nicht notwendigerweise die
Sind Sie nicht der Empfanger, so haben Sie diese E-Mail irrtumlich
erhalten und jegliche Verwendung, Veroffentlichung, Weiterleitung,
Abschrift oder jeglicher Druck dieser E-Mail ist strengstens untersagt.
Weder die noch der Absender (Oliver Roess)
ubernehmen die Haftung fur Viren; es obliegt Ihrer Verantwortung,
die E-Mail und deren Anhange (0) auf Viren zu prufen.
The present email addresses only the addressee which it targets and
may contain confidential material that may be protected by the
professional secret. The opinions reflected herein are not necessarily
If you are not the addressee, you have accidentally got this email and
are not enabled to use, publish, forward, copy or print it in any way.
Neither the , nor the sender (Oliver Roess) are
liable for viruses, being your own responsibility to check this email
and its attachments (0) for this purpose.
_________________________________________________________________________
15 years, 10 months
Reasoning with past events
by Anais Martinez
I'm using Drools for a system of alarms on agriculture. I am considering
several parcels, whose plants can be on different status (for example,
sprouting, flowering, etc.). These statuses are updated automatically by
rules, controled by several calendars. In the other hand, the farmer is
allowed to change the plants' status by hand if he/she observes that real
plants are in a status in the terrain.
If the farmer set the status before the automatic change, there is no
problem: the rules corresponding to the new state become active and the
automatic change has no effect. But if the farmer changed the status after
the automatic change, how would I consider the events in the period of time
between automatic and hand changes?
Thanks in advance.
--
View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Reasoning-with-past-e...
Sent from the Drools - User mailing list archive at Nabble.com.
15 years, 10 months
