Semantic Web Drools Module, Request for Feedbak
by Xavier Breton
Hi,
I'm looking for feedback, I'll develop a Semantic Web Drools Module that
will be the subject of my Master Degree Tesis.
The idea is to use Eclipse Modelling Framework (EMF) for prototyping and
follow a Model Driven Architecture (MDA) where the source language is
Semantic of Business Vocabularies and Business Rules (SBVR) and the target
language is Drools DRL.
The mapping could be (PIM level):
- Semantic Web Rule Language (SWRL)
- Ontology Web Language (OWL)
- RuleML
- Rule Interchange Format (RIF)
- REWERSE Rule Markup Language (R2ML)
It could be added to the module at the source UML or Entity Relationship
like models to transform the models into SBVR.
Regards
Xavier Breton
12 years
Attach custom editor on guided decision table cell
by c3310082
Hi,
We would like to render a custom editor when a user double-clicks on a cell
that is present in web guided decision table in Guvnor 5.1 (or later). The
custom editor needs to be invoked for cells that represent a particular fact
model attribute only.
This is somewhat similar to WS custom forms functionality available for
guided business rules.
So far we have seen the
org.drools.guvnor.client.decisiontable.GuidedDecisionTableWidget class that
contains implementation for:
public void onCellDblClick(GridPanel grid,
int rowIndex,
int colIndex,
EventObject e)
in the GridCellListenerAdapter class that opens up text editor or drop down
editor.
We're new to GWT and Guvnor so would appreciate it if anyone can provide the
high level steps.
Thanks
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13 years, 4 months
Help
by Olfa h
good morning,
can you help me to install drools ( for windows)
thanks
13 years, 9 months
time behaviour, suggested changes
by Mark Proctor
Currenty timer initialisation is not defined very well and rules don't
obey salience, which can make them harder to use.
Agenda interaction and scheduling:
1) Rule activations are added to the agenda like any other rule.
2) When the rule is popped from the agenda, instead executing the RHS
the timir started is started.
3) Each time the timer is triggered the rule is added to the agenda and
continues to obey salience. This time when the rule is popped from the
agenda it executes the consequence.
Fact modification behaviour:
Modify on scheduled rules currently retriggers the initial delay, if
that's 0 it can cause the rule to refire straight away, which I believe
never wanted.
1) If the timer expression does not used any modified fields, it should
not be re-scheduled.
2) Reschedule should be done for the repeat period only, we shoud not
trigger another delay.
3) The first time it is scheduled after the period has changed it should
subtract the amount for time difference left over from the last period.
For those that want timer rules to fire independant of the agenda, we
will probably add an annotation to specify the rule is not to be handled
via the agenda. This will give behaviour roughly to what we have now.
One reason why this change is important is with the upcoming algorithm
change for lazy rete. We need to use the agenda and rule priorities to
determine when to evaluate rules. Any rules not handled by the agenda
will have to be left eager, so there are significant performance gains
from this, as well as userbility gains from having timer rules that
still obey salience.
Mark
13 years, 10 months
Projects by convention and configuration and Maven build plugin
by Mark Proctor
I've started to write up what a "project" would look like for Drools and
jBPM. The idea is to move away from progammatic apis and have everything
done via a maven plugin, using conventions and configurations to make it
all work. Also we want to make sure this works well with tooling. We
want to right click and execute projects, without use having to enter
boiler plate code. Please consider it a work in progress, it's still
rough in some places and RuleModule is still very sketchy.
https://community.jboss.org/wiki/DroolsProject
I use the term Bundle to refer to zipped up deployable Project
key aspects to note on compromises to simplify things:
-single root classloader per project (currently per knowledge base)
-each knowledgebase has it's own resource path folder, all files below
that are for that specific knowledge base
-move functions and type declarations out to their own resource path
folder. With the classloader scoped at the project level, no point in
having these under the knowledge base path.
This is the sort of project anyone in the community can pick up and run
with, you don't need a deep understanding of drools or rule engines.
Just how to build a maven plugin, although there will be a small amount
of fiddly work around the classloader change, but that shouldn't be too
hard.
http://www.jboss.org/drools/irc
Mark
13 years, 10 months
Needed help for helper class
by suryain4u
package com.rmn.eoodu.service.security.drools;
import com.rmn.eoodu.service.security.impl.UserLoginServiceImpl;
import com.rmn.eoodu.service.security.dos.UserLogin;
import com.rmn.eoodu.service.message.Messages;
import com.rmn.eoodu.service.message.Message;
global com.rmn.eoodu.service.message.Messages drlMessages;
import function com.rmn.eoodu.service.utils.DroolsUtils.validatePassword;
import function com.rmn.eoodu.service.utils.DroolsUtils.checkNullOrEmpty;
import function com.rmn.eoodu.service.utils.DroolsUtils.checkEquals;
rule "checkUserName"
activation-group "validateUser"
lock-on-active true
salience 100
when
UserLogin($user:userLogin)
eval(checkNullOrEmpty($user)==true)
then
drlMessages.addErrorMessage("LoginForm_UserName","InvalidUserName","UserName
cannot be empty",5);
System.out.println("Rule1: checkUserName ");
end
rule "checkingTheLengthOfName"
activation-group "validateUser"
lock-on-active true
salience 99
when
UserLogin($user:userLogin)
eval ($user.length() < 3)
then
drlMessages.addErrorMessage("LoginForm_UserName","InvalidName","UserName
should not be less than 3 letters",3);
System.out.println("Rule2:checkingTheLengthOfName ");
end
rule "isPasswordEmpty"
activation-group "validatePwd"
lock-on-active true
salience 98
when
UserLogin($pwd : password)
eval(checkNullOrEmpty($pwd)==true)
then
drlMessages.addErrorMessage("LoginForm_Password","InvalidPassword","Password
should not be empty",5);
System.out.println("Rule3: isPasswordEmpty");
end
rule "validatingLengthOfPwd"
activation-group "validatePwd"
lock-on-active true
salience 97
when
UserLogin($pwd : password)
eval(validatePassword($pwd)==true)
then
drlMessages.addErrorMessage("LoginForm_Password","InvalidPassword","Please
check the length of the password once",4);
System.out.println("Rule4: validatingLengthOfPwd");
end
rule "userNameandPasswordAreNotEqual"
activation-group "validateForm"
//agenda-group "validateTheForm"
lock-on-active true
salience 96
when
UserLogin($user : userLogin , $pwd : password)
eval((validatePassword($pwd)==false) && (checkNullOrEmpty($pwd)==false))
eval(checkEquals($user,$pwd)==true)
then
drlMessages.addErrorMessage("LoginForm_UserName_Password","Invlid
UserName & Password","UserName and Password Cannot be Same",1);
System.out.println("Rule5: userNameandPasswordAreNotEqual");
end
Hai here i dont want to test like eval((validatePassword($pwd)==false) &&
(checkNullOrEmpty($pwd)==false)). I need a helper class to test this. Can
any body help me in writing a helper class here for it.
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13 years, 10 months
