Re: [rules-users] RE: rules-users Digest, Vol 12, Issue 16

Dr. Gernot Starke Thu, 08 Nov 2007 01:04:28 -0800

Sikkandar,

regard a rule-semaphore as a "guard": It's a variable which you useon left hand side of rules:


rule 1
when Guard g
<other conditions>
then
<RHS>
end

You can set the semaphore in any other rule to control which other
rules you want to disable or enable...

(If you need background on semaphores, have a look in Operating-Systems literature)

regards,
Gernot

Am 08.11.2007 um 08:40 schrieb Sikkandar Nawabjan:

am sorry i understand partially. i don't know to use semaphores tocontrol rule. can you give some example

Message: 4
Date: Wed, 07 Nov 2007 20:23:05 +0000
From: Mark Proctor <[EMAIL PROTECTED]>
Subject: Re: [rules-users] RE: How to stop firing rules from dependent
        object
To: Rules Users List <rules-users@lists.jboss.org>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"

you'll have to setup rules that detect the state of the working memory
that then uses semaphores to control which rules can fire.

Mark
Sikkandar Nawabjan wrote:

Hi,

I have 2 Objects and its corresponding drl/dsls to validate the rule

ObjectA -  A.drl,A.dsl

ObjectB - B.drl,B.dsl

when i insert ObjectA i want the rules in A.drl to be fired.
when i insert ObjectB along with ObjectA i want to fire rules onlyfrom B.drl
There are some rule in B.drl requires ObjectA.so i need to insertalways ObjectA with ObjectB. At the same time i don't want therule from A.drl
How to do that?

Thanks and Regs,

Basha



Sikkandar Basha         
Tech Lead                         WPEPDS

UST Global<http://intranet.ustri.com/email/UST-logo.jpg> B5N 144,Bhavani

Technopark, Trivandrum, India

[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]global.com>

T: +91-471-2335777 Extn: 6802036
M: +91-9946555330
F:  +91-471-2527276

________________________________

From: [EMAIL PROTECTED] on behalf of rules-users-[EMAIL PROTECTED]

Sent: Thu 11/8/2007 5:21 AM
To: rules-users@lists.jboss.org
Subject: rules-users Digest, Vol 12, Issue 16



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Today's Topics:

1. inconsistency with 'collect' and the '||' operator (AdrianCowham)

   2. Re: inconsistency with 'collect' and the '||' operator (Adrian)
   3. RE: Combine DSL and Java Code? (Raj, Govinda (Mohan))
   4. Re: RE: How to stop firing rules from dependent object
      (Mark Proctor)
   5. Re: inconsistency with 'collect' and the '||' operator (Mike D)
   6. Re: Combine DSL and Java Code? (Edson Tirelli)


----------------------------------------------------------------------

Message: 1
Date: Wed, 7 Nov 2007 10:35:17 -0800
From: "Adrian Cowham" <[EMAIL PROTECTED]>
Subject: [rules-users] inconsistency with 'collect' and the '||'
        operator
To: rules-users@lists.jboss.org
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"

I'm running into an issue where the || operator embedded in acollect CE

isn't working as expected. The rule I have is

rule Grant Access"
    when

$request : AccessRequest($name : username, $ID : sessionID,$loc :

accessLocation, $day : dayOfAccess)
        $user : NetworkUser(username == $name)
        $group : UserGroup(users contains $user)
        $locationRules : ArrayList(size > 0) from

collect (AccessRule((allowedLocation == "ANY" ||allowedLocation

== $loc), allowAccess == "false")
            from $group.getRules())
    then
        # access granted

end


The issue I'm having is with AccessRule((allowedLocation == "ANY" ||

allowedLocation == $loc), allowAccess == "false"), this translateto "all

access rules that have the allowed location set to ANY or set to the
location the user is logging in from". I created a UserGroup named "

super.users" that contains a user named "root" and a single rulethat allows

access from ANY location. However, when I simulate a login with "root"
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Message: 2
Date: Wed, 7 Nov 2007 19:53:36 +0000 (UTC)
From: Adrian <[EMAIL PROTECTED]>
Subject: [rules-users] Re: inconsistency with 'collect' and the '||'
        operator
To: rules-users@lists.jboss.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii

Adrian Cowham <adrian.cowham <at> gmail.com> writes:

I'm running into an issue where the || operator embedded in acollect CE isn't

working as expected. The rule I have is rule Grant Access"

    when
$request : AccessRequest($name : username, $ID :sessionID, $loc :

accessLocation, $day : dayOfAccess)

        $user : NetworkUser(username == $name)
        $group : UserGroup(users contains $user)
        $locationRules : ArrayList(size > 0) from

collect (AccessRule((allowedLocation == "ANY" ||allowedLocation

== $loc), allowAccess == "false")

            from $group.getRules())
    then
        # access grantedendThe issue I'm having is with

AccessRule((allowedLocation == "ANY" || allowedLocation == $loc),allowAccess =="false"), this translate to "all access rules that have the allowedlocation setto ANY or set to the location the user is logging in from". Icreated a

UserGroup named "

super.users" that contains a user named "root" and a single rulethat allows

access from ANY location. However, when I simulate a login with "root"


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Please ignore this email, I sent this one by accident pre-maturely.I sent my

final draft shortly after. Sorry.

a




------------------------------

Message: 3
Date: Wed, 7 Nov 2007 17:46:46 -0000
From: "Raj, Govinda (Mohan)" <[EMAIL PROTECTED]>
Subject: RE: [rules-users] Combine DSL and Java Code?
To: "Rules Users List" <rules-users@lists.jboss.org>
Message-ID:

<[EMAIL PROTECTED]>


Content-Type: text/plain; charset="utf-8"

Try changing DSL

from

[consequence][]write "{value}" to stdout=System.out.println("{value}");

To
[consequence][]write {value} to stdout=System.out.println( {value} );

And see if it works.

--Mohan

-----Original Message-----
From: [EMAIL PROTECTED]

[mailto:[EMAIL PROTECTED] On Behalf Of MarkusHelbig

Sent: Wednesday, November 07, 2007 8:09 AM
To: rules-users@lists.jboss.org
Subject: [rules-users] Combine DSL and Java Code?

Hi,

following example:

Item Class:

public class MyItem {

      public MyItem() {}

      public String getMessage()
      {
            return "Hello World!";
      }

}

DSL:

[condition][]is of type MyItem=MyItem()

[consequence][]write "{value}" to stdout=System.out.println("{value}");


DSRL File:

rule
    when
           $item: is of type MyItem
    then
           write $item.getMessage() to stdout
end

Is this "write $item.getMessage() to stdout" possible in any way?
Currently i'm not able to get it to work ...

Cheers

Markus
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------------------------------

Message: 4
Date: Wed, 07 Nov 2007 20:23:05 +0000
From: Mark Proctor <[EMAIL PROTECTED]>
Subject: Re: [rules-users] RE: How to stop firing rules from dependent
        object
To: Rules Users List <rules-users@lists.jboss.org>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"

you'll have to setup rules that detect the state of the working memory
that then uses semaphores to control which rules can fire.

Mark
Sikkandar Nawabjan wrote:

Hi,

I have 2 Objects and its corresponding drl/dsls to validate the rule

ObjectA -  A.drl,A.dsl

ObjectB - B.drl,B.dsl

when i insert ObjectA i want the rules in A.drl to be fired.
when i insert ObjectB along with ObjectA i want to fire rules onlyfrom B.drl
There are some rule in B.drl requires ObjectA.so i need to insertalways ObjectA with ObjectB. At the same time i don't want therule from A.drl
How to do that?

Thanks and Regs,

Basha
------------------------------------------------------------------------
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users


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------------------------------

Message: 5
Date: Wed, 7 Nov 2007 13:36:33 -0800 (PST)
From: Mike D <[EMAIL PROTECTED]>
Subject: Re: [rules-users] inconsistency with 'collect' and the '||'
        operator
To: rules-users@lists.jboss.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii


did you try  AccessRule((allowedLocation in ("ANY", $loc)?


Adrian Cowham wrote:

I'm running into an issue where the || operator embedded in acollect CE

isn't working as expected. The rule I have is

rule Grant Access"
    when

$request : AccessRequest($name : username, $ID :sessionID, $loc :

accessLocation, $day : dayOfAccess)
        $user : NetworkUser(username == $name)
        $group : UserGroup(users contains $user)
        $locationRules : ArrayList(size > 0) from
            collect (AccessRule((allowedLocation == "ANY" ||
allowedLocation
== $loc), allowAccess == "false")
            from $group.getRules())
    then
        # access granted

end


The issue I'm having is with AccessRule((allowedLocation == "ANY" ||

allowedLocation == $loc), allowAccess == "false"), this translateto "all

access rules that have the allowed location set to ANY or set to the
location the user is logging in from". I created a UserGroup named "
super.users" that contains a user named "root" and a single rule that
allows

access from ANY location. However, when I simulate a login with"root"


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https://lists.jboss.org/mailman/listinfo/rules-users

--

View this message in context: http://www.nabble.com/inconsistency-with-%27collect%27-and-the-%27%7C%7C%27-operator-tf4766961.html#a13636646

Sent from the drools - user mailing list archive at Nabble.com.



------------------------------

Message: 6
Date: Wed, 7 Nov 2007 14:50:36 -0200
From: "Edson Tirelli" <[EMAIL PROTECTED]>
Subject: Re: [rules-users] Combine DSL and Java Code?
To: "Rules Users List" <rules-users@lists.jboss.org>
Message-ID:
        <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"

  Markus, did you tried:

[consequence][]write {value} to stdout=System.out.println({value});

   With the line:

write $item.getMessage() to stdout

    []s
    Edson

2007/11/7, Markus Helbig <[EMAIL PROTECTED]>:


Hi,

following example:

Item Class:

public class MyItem {

      public MyItem() {}

      public String getMessage()
      {
            return "Hello World!";
      }

}

DSL:

[condition][]is of type MyItem=MyItem()

[consequence][]write "{value}" to stdout=System.out.println("{value}");


DSRL File:

rule
    when
           $item: is of type MyItem
    then
           write $item.getMessage() to stdout
end

Is this "write $item.getMessage() to stdout" possible in any way?
Currently i'm not able to get it to work ...

Cheers

Markus
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rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users




--
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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