Expert versus Expert
by Charles SOUILLARD
Hi all,
i'm a newbie on Drools and want to understand the general architecture of
the solution.
Is it true that Drools Guvnor helps managing rules definition but it is not
a rule server ? Meaning we can define, update, archive, test... rules but
not execute them in Guvnor?
My understanding is that Drools expert is the engine, let's say the rules
server) on which one rules are executed. Is there any graphical tool to
manage this engine? I mean to add/remove rules, access a dashboard... Is it
drools-server.war?
Is there any pre installed runtime environment with the engine and - if
there is one - the management console?
I tried drools-install.zip with ant install.demo but it doesn't work for
me...
Thanks a lot for your feedback, I'm waiting to test it!
Charles Souillard
15 years, 2 months
deploy jbpm as service
by 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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15 years, 2 months
Problem using Guvnor rules in eclipse
by Sumeet Karawal
Hi All,
Could you please help me on this. I am trying to create rules in Guvnor and
then using those in eclipse.
These are the steps that I am doing
1) I have created a POJO in eclipse
2) Exported as .jar and uploading it in Guvnor under a package.
3) I have created rules also in Guvnor and the test scenario there is also
working fine.
4) I build the package and the binaries get generated.
But I am not getting how to use those rule in my Java Application running
on Eclipse. I have gone through the user guide and forums also but not
getting the concrete solution for this.
>From somewhere I got the following code :
KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent
( "MyAgent" );
kagent.applyChangeSet( ResourceFactory.newUrlResource( url ) );
KnowledgeBase kbase = kagent.getKnowledgeBase();
But how to work according to it. Which url I have to give here, also I am
not able to locate the changeset.xml.
Also what should I write in the .properties file and how to refer to that.
Please it would be very helpful if anyone could provide help to me on this
as I am stuck from last 4 days on this. Is there any example that I can
refer to?
Thanks and Regards,
Sumeet
Mailto: sumeet.karawal(a)tcs.com
rules-users(a)lists.jboss.org
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15 years, 2 months
Drools mvel consequence if (logEnabled) discussion/disabled if statement
by AberAber
I know I've seen other posts saying that if statement in consequence has been
disabled due to it being poor practice, but I see the use in logging.
Lets say in consequence I have a complicated rule with 5 conditions and an
action:
modify($score) {
value = $score.value + 1;
}
if (log.debugEnabled) // errors since no if statement
{
log.debug("Added score + 1 for file " + $file + " now has updated
score of "+ $score.value);
}
This is impossible in mvel as if statement is disabled. I still want my
rule to fire if debug is disabled, so I can't add eval(log.debugEnabled) to
rule.
A stupid workaround is
for (int x = 0; ((x < 1) && log.debugEnabled); x = x + 1) {
I have a bunch of rules with different log change statements, so I see the
use of adding if statement back for mvel.
Is there a better workaround?
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15 years, 2 months
Call for Papers, edBPM11, 5th International Workshop on Event-Driven Business Process Management, collocated with BPM 2011
by 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.Stojanovic(a)fzi.de
Dr. Opher Etzion
Senior Technical Staff Member, Master Inventor
Event Processing Scientific Leader
IBM Research Lab in Haifa
OPHER(a)il.ibm.com
Prof. Dr. Adrian Paschke
Corporate Semantic Web, Free University Berlin, Germany and
RuleML Inc., Canada
paschke(a)inf-fu-berlin.de
Dr. Christian Janiesch
Senior Researcher
SAP Research Center Brisbane
Australia
Christianc.Jjaniesch(a)sap.com
Additional information
A complete overview about relevant topics, detailed workshop information and
contact addresses can be found on the workshop website
http://icep-edbpm11.fzi.de
----------------------------------------------------------------------------
--------------------------------------------------------
15 years, 2 months
Re: [rules-users] How to use KnowledgeBase
by 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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15 years, 2 months
Rule ambiguity & Rule completeness
by Guy Moas
Could you please help with the following questions?, whether Drools
supporting it
* Rule ambiguity - Checking if multiple rules are ambiguous
* Rule completeness - Checking if the set of rules cover all the
population
Regards,
Guy Moas - Technical Project Manager
tel: +972 (73) 2608276 | mobile: +972 (52) 3624583 | X-Lite: 8276 | fax:
+972 (73) 2608205
GMoas(a)fis-software.com | http://www.fis-software.com
<http://www.fis-software.com/>
15 years, 2 months
Drools - notation
by Guy Moas
Hi All,
Could you please let me know whether Drools can support the following
notation
Client.GetAge().age? (just example), 3 notations
Regards,
Guy Moas - Technical Project Manager
tel: +972 (73) 2608276 | mobile: +972 (52) 3624583 | X-Lite: 8276 | fax:
+972 (73) 2608205
GMoas(a)fis-software.com | http://www.fis-software.com
<http://www.fis-software.com/>
15 years, 2 months
