Requirement:
1)
Rule
When
Person.address.address1 is changed
THEN
2) Ideally we should have 2 objects, 1 for the old person instance, the
other for the new person instance so contextually the LHS equals to
oldPerson.address.address1 != newPerson.address.address1.
A
The agent that is responsible for the address change must take care to
provide information about what it does. This could be done by creating an
UpdateEvent fact referencing the Person fact and indicating the attribute
(address). Or a listener reacts to the change and insert the UpdateEvent
fact.
Hi Dirk,
you might want to take a look at this:
http://www.jboss.org/tohu
This is an interesting but rather old project. We're also working on a
slightly refactored version here:
https://github.com/droolsjbpm/drools-chance/tree/master/drools-informer
The project provides a dynamic
Thanks, when I am saying person address is changed, our app only concerns
about its initial value and its final value, any change in the middle, we
don't care.
Examples:
person.address.address1 starts with 'my addr1'
later a couple of changes were made, say its final value is 'my
Don't use eclipse to edit Excel files. Use Excel. I've never managed to make
this OLE editor works well (but it is a long long time I did not retry,
although I don't think there is any major evolution of this editor since then) .
You can instruct Eclipse to use Excel to edit your .xls files (see
Hi Davide and the other users too,
thank you all for your interesting links. I´ll think
that 'tohu' really seams the solution for that problem.
I think it is rather interesting that after spending
my first weeks on Drools reading the documentation
I never saw any link pointing to 'tohu'.
Hi Bruno,
On Tue, 08 Nov 2011 18:46:45 +0100, Bruno Freudensprung wrote:
Hi Dirk,
Good to see that I am not the only one fighting with that question
:-).
I guess the general answer is: it depends on how large your enums
might grow.
For instance if your application is eventually
Hello all,
I get an exception while last line of below method executed :
public StatefulKnowledgeSession createSession() throws Exception {
/*
* Create the knowledgebase using the required bpmn and drl files
*/
KnowledgeBase kbase =
It seems that this is more of a technical problem on the Java side: how to
register the fact that a certain property of an element has changed. You'll
need somthing like a clone method.
The old version of Person need and should not remain in Working Memory, but
a simple wrapper fact referencing
Richard,
This is great info. Yes, please open JIRA's for all 3 issues and we will
make sure this is fixed for the next release.
Thank you,
Edson
2011/11/9 Richard Calmbach rcalm...@gmail.com
I am making extensive use of the event processing features of the Drools
rule engine.
Hi,
I'm confused about when en where to use Java or MVEL in a rule.
In the example below I want to replace
openRes.getMasterExemplaar().getBruikbareExemplaren() with a variable.
RHD: works with JAva expression:
ListExemplaar bruikEx =
Just wondering : does these problems happends because you use clocks and jobs,
or is it general to fusion 5.3 ?
Did not migrate my project on 5.3 for now.
So do you think there is a risk, knowing that I only use very basic fusion
features ?
- Mail original -
De: Edson Tirelli
You cannot create variables on the Left Hand Side; there you can only bind
(!)
variable names (!) to matched facts or their attributes.
-W
On 9 November 2011 15:14, elsdestickere elsdestick...@yahoo.com wrote:
Hi,
I'm confused about when en where to use Java or MVEL in a rule.
In the example
Hello,
I would like to solve a 2D binpacking problem. I have an existing bin-packing
solution and would like to make it more optimized. Each change (movement of
items between bins) has a certain cost, and I would like to have a list of the
least-cost path. There is more than one solution that
Thanks for the feedback, I'll do it as you propose (although it is convenient
for debugging the decision table to be able to stay in Eclipse).
It looked to me as if it were part of the drools tooling since the editor
opened up directly after creation of the decision table using the drools
plugin,
Drools Version: 5.1 (We are looking into upgrading, but not an option at this
time)
I have need of a rule flow that will allow a diverge on one-to-many paths
and then converge and continue on only once the paths that were executed
have all finish.
Say I have path A, B, C. The constraints on the
Can you split it into two separate diverges?
Diverge to B first and always follow the other path which then does the A C,
Similarly at the other end wait for A C and then a second wait to add in the
condition for B.
Thomas
-Original Message-
From: rules-users-boun...@lists.jboss.org
Swindells, Thomas wrote:
Can you split it into two separate diverges?
Diverge to B first and always follow the other path which then does the A
C,
Similarly at the other end wait for A C and then a second wait to add in
the condition for B.
Thomas
I am not sure I entirely follow
Drools Planner can solve this problem for you.
Here's a presentation that shows the code for a 3D bin packing problem:
http://www.slideshare.net/ge0ffrey/judcon-london-2011-bin-packing-with-drools-planner-by-example
To try it yourself, download the planner zip and run the example
Hi,
I do not reallt know whether there is a native way in jBPM to implement the
m out of n-case you are describing. Anyway, imho, the easiest way to
roundtrip this is probably this:
Create a series of simple decision gateways: If(A has to execute), fire A;
else do nothing; If (B has to execute);
Yes, that is a Map base approach I am thinking.
Now more questions:
global MapObject, Object oldObjectContext
WHEN
$person: Person()
eval(((Person)oldObjectContext[$name]).jobTitle == $person.name)
THEN
Q1: without eval, the compiler will report error
Q2: without type cast, the compiler
Hi there,
we use drools fusion 5.3. Final.
In a drl-file, a fact and an event and the following rules are declared
package ... etc
declare ActivityState
@role(fact)
state : StateType
end
rule set initial state
dialect java
salience 100
when not (exists
Not sure if anyone can share their experiences what kind of test cases on
Drools security should be developed and ensured?
As the rule is just a piece of codes in String format which can be hooked
into JVM, we can assume that might open some holes and necessary security
test cases need to be
Anyone tried to integrate the guvnor UI into your own application？
Basically we want to have a integrated, uniformed UI with our application
rather than a separate one like Drools Guvnor does...
--
View this message in context:
You will need to solve that problem. looks like a configuration problem,
can you share the persistence.xml file? did you configure persistence with
JTA?
Cheers
2011/11/9 S.M.H.Jamali cpp...@yahoo.com
Hello all,
I get an exception while last line of below method executed :
public
If your application is a web application then you can try this solution:
http://ilesteban.wordpress.com/2010/11/23/guvnor-embed-assets-editor-in-your-application/
Best Regards,
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @
Against external attacks, Drools supports knowledge base signing and
checking using standard asymmetric keys infrastructure. Regarding the web
application, I will let one of the guvnor guys to talk about. Against
internal attacks, i.e., someone deliberately adding a malicious rule into
the
Are you calling the fireAllRules() method after inserting the events? or
using fireUntilHalt()?
You can activate the log to see what is happening with:
KnowledgeRuntimeLoggerFactory.newConsoleLogger(session);
Cheers
On Wed, Nov 9, 2011 at 1:37 PM, ukriegel
ulrich.krie...@isst.fraunhofer.dewrote:
Nice, will give a try.
Another 2 questions you might be able to help:
1) The Guvnor UI is basing on technical models which is hard for a business
user to understand, especially when the current technical models
implementation is not so good (for example, not straightforward relationship
etc), is
Thanks Edson.
We are developing a web based UI (if possible embed guvnor into our
application) and open the ability to customers to define their own rules, so
a company policy on this won't work.
Will evaluate other concern points and have more discussions on this.
Ivan
--
View this message
Actually, your proposal does not work as expected:
While Eclipse is open, it locks the file. If I edit it with Excel, be it
directly from the OS or via configuration of the filetype, I therefore
cannot save it.
So it is like change the excel file-startup eclipse -click refresh -
get compilation
Hi all,
I have a problem with data enumeration for nested classes in BRLs.
I have two classes, Promotion and Program. Promotion has a property named
program of type Program, which has a string property called code.
I did a couple of enumeration in this way:
[Program.code] = ['ABC=First
Eclipse does not lock files, none of them, including xls ...
May be you have an excel process still in execution (not killed by buggy
OLEEditor) that keeps some locks ?
OOTB Eclipse ? don't know what it is, but may be the problem is here ?
I do use Excel spreadsheet in real applications. But
bug : https://issues.jboss.org/browse/GUVNOR-1573
fixed in 5.3
But I think you does not need your second enum. Guvnor will infer that (in 5.3).
- Mail original -
De: gab acque_profo...@yahoo.it
À: rules-users@lists.jboss.org
Envoyé: Mercredi 9 Novembre 2011 19:26:00
Objet: [rules-users]
Tohu is a relatively old, unofficial and inactive project. We're refactoring
that as drools-informer,
but that's work in progress and I'm not sure the jQuery web client that
comes with tohu would still work. So I'd recommend to stick to tohu for your
thesis (especially giving your time constraints
1) You can put a bridge\adapter layer in between your object model and that
used in Guvnor, but there is nothing in Guvnor itself.
2) Guvnor does support field expressions in the BRL (Business Rule - Guided
Editor). When defining a field constraint select Expression. There were
some good
Thanks for the insight,
br,
Els
--- On Wed, 11/9/11, Wolfgang Laun wolfgang.l...@gmail.com wrote:
From: Wolfgang Laun wolfgang.l...@gmail.com
Subject: Re: [rules-users] variables confusion Java/MVEL
To: Rules Users List rules-users@lists.jboss.org
Date: Wednesday, November 9, 2011, 3:35 PM
You
Hello,
I'm almost new to Drools Planner, and i run into some problems.
One of them, I really want to understand is that my Planner works well until
i try to use a CachedMoveFactory instead of my MoveFactory, then i've got
Corrupted undo move at step 2.
Assigment are my PlanningEntity, Day are
Edson: Thanks for the quick reply. I created these JIRA issues:
F1: Duplicate job scheduling in
org.drools.time.impl.DefaultTimerJobInstance.call()
- https://issues.jboss.org/browse/JBRULES-3284
F2: NullPointerException in
Hello
I have a problem please any one help me
i have a field product type depending on product type i want to create
new field or property or fact, and on the new field i want to give rules...
please send me some example or link to lean and practice
if we dynamically invoke the
Hi,
I am trying to use RulesRepository to create a package and copy required
assets (by using their uuid) into the created package.
Below is the code snippet and the corresponding stack trace of the run-time
exception being thrown.
I would like to know the appropriate lucene-core jar to be used
Hi there,
can you elaborate a little bit more on what are you trying to achieve.
It's almost impossible to help with that generic description.
You can write rules on your products that create and insert new facts
pretty easily
Rule categorize product
no-loop
when
$p:Product(name ==
Would you please provide a method in 'org.drools.io.ResourceFactory' like
this:
public static Resource newReaderResource(InputStream stream, String
encoding);
then I can use this method to load drl files as a stream while explicitly
specify its ecoding?
And in line: 287 of class
My requirement is if i select the product type mobile, or dth, or some other
,
then i will check one more rule if customer credit total is above 1000 etc..
then i want create a new fact or field . and on that field i want to keep
rule and give some discount constraint as new rule
I am new to
I suggest you to start simple.
Just create a java project add the drools dependencies (knowledge-api,
drools-core and drools-compiler), define your POJO classes that will
represent your Domain model, for example: Product, Discount, Category, etc
and then you can start writing your rules. When you
After insertion of the event, fireAllRules() is called.
In fact, there is in addition a default rule
rule default
dialect java
when Command() from entry-point XXX
then
System.out.println(No reaction on Command +new Date());
end
which fires with the same
Op 09-11-11 23:31, npiedeloup schreef:
Hello,
I'm almost new to Drools Planner, and i run into some problems.
One of them, I really want to understand is that my Planner works well until
i try to use a CachedMoveFactory instead of my MoveFactory, then i've got
Corrupted undo move at step
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