Re: [rules-users] Drools Design Patterns

[Ross H]

Thanks Mark, Wolfgang, I think this is a worthwhile area, although
difficult. My hope was that "ordinary" users might have a view of what they
want to see, not necessarily formal patterns, but just ways of doing common
problems.

Hopefully we get some more responses from the community, but anyway I'll see
what I can do from a naive user perspective.

Ross.


2009/12/4 Mark Proctor 

>  Wolfgang Laun wrote:
>
> 2009/12/3 Mark Proctor 
>
>> http://www.jboss.org/community/wiki/UsagePatterns
>>
>
> This link is OK, but from there on,
>
>- some point to "An article with that name does not exist. It may have
>been renamed or deleted."
>- one or two forward you to sketchy pages, not really explaining
>anything,
>- a few lead to theoretical discussions, not remotely showing anything
>like workable examples.
>
> Not perfect, but at least consistent, moderately readable and, possibly,
> even helpful is Cousin Jess' WiKi, see
> http://www.jessrules.com/jesswiki/view
>
> I put it up years ago with some titles to get it started in the hope that
> the community would continue with it and flesh it out, as they discovered
> things. No one ever did :( I referenced it as a starting point for Ross if
> he wants to share his findings.
>
> Mark
>
>
> -W
>
>
>
>>
>> Mark
>> Ross H wrote:
>>
>>  I've been using Drools for about a year now, but still consider myself a
>> newbie,
>> although I'm starting to get a better idea of how to implement solutions,
>> for the
>> experts this is probably second nature.
>>
>>  Whilst the Drools doco is very good, and the blog/mailing lists are a
>> great source of info,
>> and there are now some very good books on Drools, there is a hugh amount
>> of
>> functionality emerging in the Drools project, it's almost becoming a full
>> time activity just
>> to keep up. I wonder if the time is coming to start collecting real
>> experiences into a form that
>> makes it easier for new users to work out how to attack their problem.
>>
>>  I hate to re-invent the wheel and if this exists in some form elsewhere,
>> I'd like to know.
>> If not, then it might be good to capture this knowledge in some way. I'm
>> interested in
>> some views from the user community on what they would like to see.
>>
>>  Maybe the way to go is add some pages to the JBoss Drools wiki and
>> evolve it from there,
>> and provide a way for the drools user community to contribute to the
>> overall success of Drools,
>> rather than just ask questions.
>>
>>
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Re: [rules-users] Need help related to collection of data accessing in rule file.

[Pritam]

I have the same problem as I'm trying to create a decision table via excel
where the fact is a root object A where A has a collection B, and B has a
collection C. My rules are based out of the instance A, loop for each object
in B, and within that, loop each object in C. Not sure how I can write an
expression for the same.

From the examples, I see that one can access a particular element in A by
$a.listname[1] but in my case, I need to access all elements in the loop.

Any suggestions?


prasad raju sagi wrote:
> 
> Hi ,
> 
> I am trying to create rule  on a fact , which contains arraylist of
> collection and the object in the collection internally contains an
> arraylist of another collection of objects.
> 
> This looks like  object A contains collection of objects B and B contains
> collection object C
> 
> A ->  blist ( Arraylist )
> 
> B -> clist (ArrayList )
> 
> C-> dlist( ArrayList)
> 
> D-> type ( string)
> 
> I am inseting A as fact to the working memory.
> 
> I am in confusion state like how to write the rule to place conditions  on
> collection C. 
> 
> Can I use from in the form of nested from in rule statment.
> Thanks
> Prasad Raju Sagi
> Mobile: 847-644-4103 
> 
> 
> 
> 
> 
> From: Aziz Boxwala 
> To: rules-users@lists.jboss.org
> Sent: Thursday, June 11, 2009 1:58:28 PM
> Subject: [rules-users] process order example not working fully
> 
> 
> I am trying to execute a ruleflow and use rules to assign tasks within the
> ruleflow in Drools 5.0.1. I have a drl file included in my knowledge base
> that tries to assign a task to a user when a new human task is created.
> This is based on the example in org.drools.example.process.order. I can't
> get my code to work. I don't the rules in the example are working either
> (dslr for the task assignment or the drl for dynamic logging). After some
> attempts, I found that this condition 
>     WorkItemNodeInstance()
> does not evaluate to true ever.
> 
> Do I have to do anything special to make the WorkItemNodeInstance appear
> in working memory?
> 
> Thanks for any help.
> 
> --Aziz
> 
> 
> 
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[rules-users] Can we fire a rule from another rule...?

[Deepak Jambhekar]

Hi...       In one of my requirments I need to fire a rule from another rule... i.e. when       rule "Rule 1"
	when
		condition()
	then
	      someaction()	      then it should fire another rule Rule2
end          rule "Rule 2"	when		condition()	then	      someaction()	endCan we achieve this in Guvnor??please helpThanksDeepak Prabhakar Jambhekar=-=-=
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Re: [rules-users] command line utility for importing rules

[Jervisliu]

The import/export is handled by RepositoryBackupServlet, check its 
source from [1]. Its URL is sth like: 
http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/backup

[1]. 
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-guvnor/src/main/java/org/drools/guvnor/server/files/RepositoryBackupServlet.java

Cheers,
Jervis

rbolla wrote:
>
> Or is there a URL like http://localhost/drools-guvnor/xx ?
> so that I can use 'CURL' to upload a file.
>
> Whereever I navigate, all I see is
>
> http://localhost/drools-guvnor/org.drools.guvnor.Guvnor/Guvnor.html in the
> address bar.
>
> Thanks,
>   

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Re: [rules-users] command line utility for importing rules

[rbolla]

Or is there a URL like http://localhost/drools-guvnor/xx ?
so that I can use 'CURL' to upload a file.

Whereever I navigate, all I see is

http://localhost/drools-guvnor/org.drools.guvnor.Guvnor/Guvnor.html in the
address bar.

Thanks,
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Re: [rules-users] CEP fusion

[chris richmond]

my zip file attachment was blocked.  I will try to attach the source/rule
files.

modified the standard DroolsTest.java that gets created when you create a
new Drools project.

Thanks,

Chris




On Thu, Dec 3, 2009 at 3:07 PM, chris richmond wrote:

> here is my eclipse project  with source and rule files.  I modified test
> rules/class that gets created with a new drools project in eclipse.  I hope
> the .zip file  comes through
>
>
>
>
> 2009/12/3 Edson Tirelli 
>
>
>>Are you running your application in STREAM mode or CLOUD mode? Delaying
>> "not" is a feature of the STREAM mode. If you are already running in STREAM
>> mode, can you give me an isolated test that I can check?
>>
>>Thanks
>>
>>Edson
>>
>> 2009/12/3 chris richmond 
>>
>>>   Hello,
>>>
>>> I have this test rule that basically fires if a followup reading is not
>>> received with the appropriate value within some time.  According to the
>>> fusion docs, simply using:
>>>
>>> *not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
>>>
>>> should wait 5 seconds before firing, however this does not work unless I
>>> explicitly also set:
>>>
>>> *duration*( 5s )
>>>
>>> and if I do that, it seems to wait the 5 seconds, however it always
>>> follows what I put in the duration value and seems to compeltely ignore the
>>> time tolerances I use here.:
>>>
>>> $reading : DatarReading($val: value)
>>>
>>> *not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
>>> And if I have different values, it will fire the rule after 2 seconds and
>>> ignore the 5s in the sample below.
>>>
>>> Any ideas?
>>> *
>>>
>>> rule
>>> *"my rule"
>>>
>>> *duration*( 2s )
>>>
>>> *when*
>>>
>>> $reading : DatarReading($val: value)
>>>
>>> *not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
>>>
>>> *then*
>>>
>>> System.err.println(
>>> "did not receive follow up - reading value: " + $val);
>>>
>>> *
>>>
>>> end
>>>
>>>
>>>
>>>
>>> *
>>>
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>>>
>>>
>>
>>
>> --
>>  Edson Tirelli
>>  JBoss Drools Core Development
>>  JBoss by Red Hat @ www.jboss.com
>>
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>


DatarReading.java
Description: Binary data


DroolsTest.java
Description: Binary data


FollowUpReading.java
Description: Binary data


FusionTesing.drl
Description: Binary data
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Re: [rules-users] command line utility for importing rules

[Jervisliu]

This is no such command line tool exists at the moment...

Cheers,
Jervis

rbolla wrote:
> Hi, 
> I'm a systems engineer and I want to import rules to guvnor. 
> I dont want to do this by guvnor web UI (Administration --> import/export).
> Rather, I want to use a command to upload repository_export.xml file.
>
> something like, 
> $java_home/java org.drools.repository.something repository_export.xml
>
> Can you help me in finding the command.
>
> Thanks,
>   

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Re: [rules-users] CEP fusion

[Edson Tirelli]

   Are you running your application in STREAM mode or CLOUD mode? Delaying
"not" is a feature of the STREAM mode. If you are already running in STREAM
mode, can you give me an isolated test that I can check?

   Thanks

   Edson

2009/12/3 chris richmond 

> Hello,
>
> I have this test rule that basically fires if a followup reading is not
> received with the appropriate value within some time.  According to the
> fusion docs, simply using:
>
> *not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
>
> should wait 5 seconds before firing, however this does not work unless I
> explicitly also set:
>
> *duration*( 5s )
>
> and if I do that, it seems to wait the 5 seconds, however it always follows
> what I put in the duration value and seems to compeltely ignore the time
> tolerances I use here.:
>
> $reading : DatarReading($val: value)
>
> *not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
>  And if I have different values, it will fire the rule after 2 seconds and
> ignore the 5s in the sample below.
>
> Any ideas?
> *
>
> rule
> * "my rule"
>
> *duration*( 2s )
>
> *when*
>
> $reading : DatarReading($val: value)
>
> *not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
>
> *then*
>
> System.err.println(
> "did not receive follow up - reading value: " + $val);
>
> *
>
> end
>
>
>
>
> *
>
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 JBoss by Red Hat @ www.jboss.com
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[rules-users] CEP fusion

[chris richmond]

Hello,

I have this test rule that basically fires if a followup reading is not
received with the appropriate value within some time.  According to the
fusion docs, simply using:

*not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )

should wait 5 seconds before firing, however this does not work unless I
explicitly also set:

*duration*( 5s )

and if I do that, it seems to wait the 5 seconds, however it always follows
what I put in the duration value and seems to compeltely ignore the time
tolerances I use here.:

$reading : DatarReading($val: value)

*not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )
And if I have different values, it will fire the rule after 2 seconds and
ignore the 5s in the sample below.

Any ideas?
*

rule* "my rule"

*duration*( 2s )

*when
*

$reading : DatarReading($val: value)

*not*( FollowUpReading(value == $val, *this* before[0s,5s] $reading ) )

*then*

System.err.println("did not receive follow up - reading value: " + $val);

*

end




*
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Re: [rules-users] Can we use 'from' CE in Decision Tables ?

[groovenarula]

Hi Thomas,

Just wanted to let you know that the eval soution finally worked. I create a
'containsCode' method on my Line bean and then used that to see if the Line
contained a given code. Then finally used 'eval' to check if the 'code'
exists from within a decision table. 

Got what I needed.

Thanks for the solution. 
Gurvinder


Swindells, Thomas wrote:
> 
> Hi Gurvinder.
> 
> Not sure where new lines have gone from your email - it makes it very hard
> to read!
> 
> I've also been working on a project which uses decision tables and I
> couldn't find any way to use from statements either.  I'm hoping to get
> some time within the project to work on the drools decision table code to
> add some improvements, providing support for the from clause is one of
> these however I'm not sure whether I will get time or not.
> 
> However I think you may be able to restructure your code so that you don't
> need the from cause however I've not fully tested it. The code relies on
> their existing a constructor which takes the promotion code and the equals
> is defined that P1.equals(P2) when P1.code.equals(P2.code).
> 
> If you wanted to match that a promotion of a particular name exists then I
> think you can use the rule
> Rule "existsPromotion"  when
> Line(promos contains (new Promotion("HOTBUY"))) then ...
> 
> However the expression language doesn't support "not contains" which means
> you have to full back to use java:
> rule " contains d"
>   when
> line : Line(eval(!line.getPromos().contains(new
> Promotion("HOTBUY"
>   then
> ...
> end
> 
> If you prefer you could also define a method on Line
> containsPromotionWithCode(code) which would let you choose how to do the
> match.
> 
> As a spreadsheet the above would then look something like the following:
> RuleTable Hotbuys
> 
> 
> 
> 
> 
> NAME
> 
> CONDITION
> 
> ACTION
> 
> 
> 
> l :Line
> 
> 
> 
> 
> 
> eval(!l.getPromos().contains(new Promotion("$param")))
> 
> System.out.println("$param");
> 
> Rule Name
> 
> Number Directors
> 
> Warning
> 
> example1
> 
> Hotbuys
> 
> Hotbuys missing
> 
> 
> Hope that helps,
> 
> Thomas
> 
> 
> From: rules-users-boun...@lists.jboss.org
> [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of groovenarula
> Sent: 03 December 2009 06:51
> To: rules-users@lists.jboss.org
> Subject: [rules-users] Can we use 'from' CE in Decision Tables ?
> 
> Hello all, Is it possible to define the follow rule in a decision table :
> rule "Activate Promotion" when l : Line( ) not ( Promotion ( code ==
> "HOTBUY" ) from l.promos ) then #do some action end The rule above works
> perfectly for what I need when defined in a rule file. However, when I try
> to define it in a decision table so that the 'code' can be feed from a
> spreadsheet, I use the following values in the rules cells : RuleTable
> HOTBUYS CONDITION ACTION l : Line not ( Promotion ( code == "$param" )
> from l.promos ) System.out.println("$param added"); PROMOTION PROMOTION
> HOTBUY BESTBUY I'm getting the following parser errors [10,17]: [ERR 101]
> Line 10:17 no viable alternative at input 'Promotion' in rule "_11" in
> pattern Line [10,29]: [ERR 101] Line 10:29 no viable alternative at input
> 'code' in rule "_11" [10,63]: [ERR 102] Line 10:63 mismatched input ')'
> expecting 'then' in rule "_11" java.lang.IllegalArgumentException: Could
> not parse knowledge. at
> com.sample.DecisionTableTest.readKnowledgeBase(DecisionTableTest.java:85)
> at com.sample.DecisionTableTest.main(DecisionTableTest.java:28) Also in
> Eclipse IDE, I get the following error : "Unknown error while parsing.
> This is a bug. Please contact the Development team." NewPromotions.xls Is
> it possible to use 'from' conditional element in decision tables ? If so,
> what am I doing wrong. If not, then what's the best approach to implement
> the rule above in a decision table. I'm running Drools 5.1.0M1 in Eclipse.
> Help truly appreciated. Gurvinder
> 
> View this message in context: Can we use 'from' CE in Decision Tables
> ?
> Sent from the Drools - User mailing list
> archive at Nabble.com.
> 
> 
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Re: [rules-users] Trivial rule with condition in RHS won't compile, help please

[Greg Barton]

Well, technically you choose a different dialect because you want different 
functionality, so consistency isn't a requirement.  I do agree that the 
difference is not intuitive.  I'm not sure why they're disabled in mvel.  Dev 
d00ds?  If the reason is just to enforce the "you shouldn't have conditions in 
the RHS" pattern then I don't think that's sufficient.

--- On Thu, 12/3/09, Barry Kaplan  wrote:

> From: Barry Kaplan 
> Subject: Re: [rules-users] Trivial rule with condition in RHS won't compile, 
> help please
> To: rules-users@lists.jboss.org
> Date: Thursday, December 3, 2009, 2:07 PM
> 
> 
> Greg Barton wrote:
> > 
> > You can use them in the RHS, but just with java
> dialect. 
> > 
> 
> This is inconsistent. If they can be used in java, then
> they should not be
> disabled for mvel. 
> 
> 
> 
> -- 
> View this message in context: 
> http://n3.nabble.com/Trivial-rule-with-condition-in-RHS-won-t-compile-help-please-tp67458p67488.html
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Re: [rules-users] CEP + prevent consequences from triggering multiple times?

[Paul R.]

Hi Greg,

Thanks for the response. Unfortunately your example doesn't appear to work,
the SpeedIndicator doesn't get retracted, causing the consequence to only
ever trigger once. However, I could add another rule to remove the
SpeedingIndicator - meaning I no longer have to use the nasty global "state"
object from my example.

Any other suggestions greatly appreciated.

Cheers,

Paul

On Thu, Dec 3, 2009 at 7:14 PM, Greg Barton  wrote:

> Have you tried truth maintenance? (i.e. insertLogical)
>
> rule "OverSpeedLimit" no-loop true
> when
> not SpeedingIndicator();
>$minSpeed : Double(doubleValue > 100) from accumulate(
> $speedingEvent : SpeedingEvent ($speed : speed)
>over window:time( 30s )
>from entry-point SpeedingStream,
>min($speed)
>);
> then
>insertLogical(new SpeedingIndicator());
> end
>
> Though I'm not sure this will work, because inserting the SpeedingIndicator
> negates the first condition, probably causing the SpeedingIndicator to be
> retracted automatically. :)  But it's worth a try just to see if no-loop
> would override that somehow.
>
> Apart from that, note that you can test the results of an accumulate in the
> returned value. (The "Double(doubleValue > 100)" part.)  YOu don't need the
> eval.
>
> Also, where is the "state" object coming from?  If it's a global, it's not
> a good idea to use them in the conditions of your rules.  Changes to them
> are not tracked by the rete.
>
> --- On Thu, 12/3/09, reverselogic  wrote:
>
> > From: reverselogic 
> > Subject: [rules-users] CEP + prevent consequences from triggering
> multiple times?
> > To: rules-users@lists.jboss.org
> > Date: Thursday, December 3, 2009, 12:41 PM
> >
> > Hi,
> >
> > I'm trying to write a rule in drools, which triggers once
> > some condition is
> > active for a specified time interval. For example, if a
> > vehicle is over a
> > speed limit (100 mph) for 30 seconds, I want to trigger an
> > action. However,
> > once this rule has fired, I don't want it to fire again
> > until the vehicle
> > has dropped below the speed limit (and gone over the limit
> > again). The only
> > way I've managed to model this is by defining two rules;
> > one for determining
> > when the vehicle is speeding and one for determining when
> > it is not speeding
> > and using a global object to track the state of the vehicle
> > (see rules
> > below).
> >
> > rule "OverSpeedLimit" no-loop true
> > when
> > $minSpeed : Double() from accumulate(
> > $speedingEvent :
> > SpeedingEvent ($speed : speed)
> >
> > over window:time( 30s )
> >
> > from entry-point SpeedingStream,
> > min($speed)
> > );
> >
> > eval ($minSpeed > 100.0 &&
> > !state.speeding)
> > then
> > state.speeding = true
> > end
> >
> > rule "!OverSpeedLimit" no-loop true
> > when
> > $speedingEvent : SpeedingEvent()
> > from entry-point
> > SpeedingStream
> > eval ($speedingEvent.speed <= 100.0)
> > then
> > state.speeding = false
> > end
> >
> > My questions is: Is there a better way to model the above
> > behaviour,
> > preferably as a single rule? The reason I ask is because I
> > believe it would
> > be too complicated for my users to define rules like this.
> > Ideally, I would
> > like to be able to create a DSL such as: "when Speed is
> > above X for Y
> > seconds then ..."
> >
> > Any help greatly appreciated.
> >
> > Thanks,
> >
> > Paul
> >
> >
> >
> >
> > --
> > View this message in context:
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> > Nabble.com.
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Re: [rules-users] Trivial rule with condition in RHS won't compile, help please

[Greg Barton]

You can use them in the RHS, but just with java dialect. The RHS code should 
then be passed through with no modification.

And there are occasional reasons why you would want to test conditions in the 
RHS (optimization, mostly) but should be avoided most of the time.

--- On Thu, 12/3/09, CK  wrote:

> From: CK 
> Subject: Re: [rules-users] Trivial rule with condition in RHS won't compile, 
> help please
> To: "Rules Users List" 
> Date: Thursday, December 3, 2009, 1:49 PM
> I would assume that you're trying to
> test out rule writing and see  
> what works and what doesn't.   I don't
> believe you can use if  
> statements in the RHS.
> 
> Normally, anytime you want to use "if" statements inside
> the RHS, it's  
> a sure sign that you should move it to the LHS and create
> separate  
> rules.
> 
> You can actually make your rule even simpler:
> 
> rule "test"
> dialect "mvel"
> when
>    //empty LHS automatically implies true
> then
>    System.out.pritln("***")
> end
> 
> Cheers,
> Chris
> 
> On Dec 3, 2009, at 11:43 AM, Barry Kaplan wrote:
> 
> >
> > The following rule:
> >
> > rule "test" dialect "mvel"
> > when
> >    eval(true)
> > then
> >    if (true) {
> >        System.out.println("***")
> >    }
> > end
> >
> > Fails with:
> >
> > java.lang.RuntimeException: Unable to build expression
> for  
> > 'consequence':
> > was expecting type: java.lang.Object; but found type:
> void '    if  
> > (true) {
> >        System.out.println("***")
> >    }
> >    true
> > ' : [Rule name='test']
> >
> > I can't for the live of me figure out what mvel is
> bitching about.
> >
> > Note that the following does compile:
> >
> > rule "test" dialect "mvel"
> > when
> >    eval(true)
> > then
> > //    if (true) {
> >        System.out.println("***")
> > //    }
> > end
> > -- 
> > View this message in context: 
> > http://n3.nabble.com/Trivial-rule-with-condition-in-RHS-won-t-compile-help-please-tp67458p67458.html
> > Sent from the Drools - User mailing list archive at
> Nabble.com.
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Re: [rules-users] Trivial rule with condition in RHS won't compile, help please

[Barry Kaplan]

Greg Barton wrote:
> 
> You can use them in the RHS, but just with java dialect. 
> 

This is inconsistent. If they can be used in java, then they should not be
disabled for mvel. 



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[rules-users] Trivial rule with condition in RHS won't compile, help please

[Barry Kaplan]

The following rule:

rule "test" dialect "mvel"
when
eval(true)
then
if (true) {
System.out.println("***")
}
end

Fails with:

java.lang.RuntimeException: Unable to build expression for 'consequence':
was expecting type: java.lang.Object; but found type: void 'if (true) {
System.out.println("***")
}
true
' : [Rule name='test']

I can't for the live of me figure out what mvel is bitching about.

Note that the following does compile:

rule "test" dialect "mvel"
when
eval(true)
then
//if (true) {
System.out.println("***")
//}
end
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Re: [rules-users] Trivial rule with condition in RHS won't compile, help please

[CK]

I would assume that you're trying to test out rule writing and see  
what works and what doesn't.   I don't believe you can use if  
statements in the RHS.

Normally, anytime you want to use "if" statements inside the RHS, it's  
a sure sign that you should move it to the LHS and create separate  
rules.

You can actually make your rule even simpler:

rule "test"
dialect "mvel"
when
   //empty LHS automatically implies true
then
   System.out.pritln("***")
end

Cheers,
Chris

On Dec 3, 2009, at 11:43 AM, Barry Kaplan wrote:

>
> The following rule:
>
> rule "test" dialect "mvel"
> when
>eval(true)
> then
>if (true) {
>System.out.println("***")
>}
> end
>
> Fails with:
>
> java.lang.RuntimeException: Unable to build expression for  
> 'consequence':
> was expecting type: java.lang.Object; but found type: void 'if  
> (true) {
>System.out.println("***")
>}
>true
> ' : [Rule name='test']
>
> I can't for the live of me figure out what mvel is bitching about.
>
> Note that the following does compile:
>
> rule "test" dialect "mvel"
> when
>eval(true)
> then
> //if (true) {
>System.out.println("***")
> //}
> end
> -- 
> View this message in context: 
> http://n3.nabble.com/Trivial-rule-with-condition-in-RHS-won-t-compile-help-please-tp67458p67458.html
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Re: [rules-users] Trivial rule with condition in RHS won't compile, help please

[Barry Kaplan]

Ok, I found http://n3.nabble.com/Strange-MVEL-error-td62055.html#a62055 which
indicates that expressions are disabled in mvel RHS. I understand good
intentions, but I **need** this expression for this particular situation.
Anybody know some what to turn this back on?

Also, when I try wrap the RHS in a function, that also fails. I'm guessing
because I declare dialect "mvel" for the entire file. If this is why
function fails to compile with an if-statement, this must be a bug.
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Re: [rules-users] unable to resolve Type Declaration class

[Edson Tirelli]

  The problem mentioned by Richard is fixed in trunk. Regarding Guvnor
379, I will ask Toni to re-test it. Thanks for pointing it out.

  Regarding your comment on the documentation, it is documented here:

http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-expert/html_single/index.html#d0e3350

  Edson

2009/12/3 Jaroslaw Kijanowski 

> Looks like it is related to this open jira:
> https://jira.jboss.org/jira/browse/GUVNOR-379
>
> Cheers,
>  Jarek
>
> richarda wrote:
> > Yeah, its in the classpath..  and to be doubly sure just before the code
> I do
> > a
> > Signature s=new Signature();
> > and that works.. so jvm can find the Signature object.
> >
> > I have created https://jira.jboss.org/jira/browse/JBRULES-2348
> > I would love to know if any workarounds are possible, this has ground my
> > project to a halt.
> >
> > thanks
> > Ric
> >
> >
> > Edson Tirelli-4 wrote:
> >>Kris just reminded me of something: do you have the actual Message
> >> class
> >> in the test program classpath?
> >>
> >>When downloading the package from guvnor, I think it does not
> download
> >> the model jar... only the actual rules, etc...
> >>
> >>Edson
> >>
> >> 2009/11/25 richarda 
> >>
> >>> Also tried under 5.1.0M1 release.. same issue :(
> >>> Am i doing something wrong by declaring the @role in the Configuration
> >>> section?
> >>>
> >>>
> >>> richarda wrote:
>  Still trying to get this to work.
>  I have managed to create from a default (new) guvnor setup.
> 
>  Steps I do..
>  1. Create fresh guvnor
>  2. In eclipse create  Message.java file in package com.sample, and
> >>> create
>  a jar file
>  3. In guvnor import the model for the Message.jar file
>  4. In guvnor create a category
>  5. Create an import statement for  import com.sample.Message
>  6. Create a simple technical rule,  something like   when, Message(),
>  then, System.out.println(".");
>  7. Build the pkg
>  8. download the pkg
> 
>  use the code from previous post to load the pkg...
>  it works fine..
> 
>  now, goto guvnor advanced view and change the Configuration from:
>  import com.sample.Message
> 
>  to:
> 
>  import com.sample.Message;
> 
>  declare Message
>    @role( event )
>  end
> 
> 
>  build the pkg,
>  download the pkg,
>  run the test program...
> 
>  I get:
>  org.drools.RuntimeDroolsException: unable to resolve Type Declaration
>  class 'Message'
>    at
> >>> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:754)
>    at
> 
> >>>
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:515)
>    at
> 
> >>>
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
>    at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:69)
>    at com.sample.DroolsTest.main(DroolsTest.java:27)
> 
> 
>  richarda wrote:
> > So, my code is doing this:
> >
> >  KnowledgeBaseConfiguration conf =
> > KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
> > conf.setOption(EventProcessingOption.STREAM);
> > KnowledgeBuilder builder =
> > KnowledgeBuilderFactory.newKnowledgeBuilder();
> > try {
> > File f = new File("/tmp/my.pkg");
> > InputStream stream = new FileInputStream(f);
> > if (stream == null) {
> > jlog.fatal("Unable to find rule pkg");
> > } else {
> > jlog.info("adding pkg");
> >
> > builder.add(ResourceFactory.newInputStreamResource(stream),
> > ResourceType.PKG);
> > }
> > } catch (Exception e) {
> > e.printStackTrace();
> > }
> > KnowledgeBase kbase =
> > KnowledgeBaseFactory.newKnowledgeBase(conf);
> >
> >>> kbase.addKnowledgePackages(builder.getKnowledgePackages());
> > jlog.info("setup creating knowledge session");
> > ksession = kbase.newStatefulKnowledgeSession();
> > jlog.info(" setup ksession created");
> >
> >
> > The pkg was created from Guvnor.
> >
> > If in the package declaration area in Guvnor,  (where you put the
> >>> import
> > statements)
> > If I put
> > declare Signature
> >  @role ( event )
> > end
> >
> > then build the package, save it to disk /tmp/my.pkg
> > on startup I get:
> >
> >
> >>>
> [#|2009-11-24T14:50:38.944+|WARNING|sun-appserver2.1|javax.enterprise.system.stream.err|_ThreadID=12;_ThreadName=pool-1-thread-3;_RequestID=7c35064d-757e-4519-b5eb-433db89e168d;|org.drools.RuntimeDroolsException:
> > unable to resolve Type Declaration class 'Signature'
> >  at
> >
> org.drools.compil

Re: [rules-users] CEP + prevent consequences from triggering multiple times?

[Greg Barton]

Have you tried truth maintenance? (i.e. insertLogical)

rule "OverSpeedLimit" no-loop true
when
not SpeedingIndicator();
$minSpeed : Double(doubleValue > 100) from accumulate(
$speedingEvent : SpeedingEvent ($speed : speed)
over window:time( 30s )
from entry-point SpeedingStream,
min($speed)
);
then
insertLogical(new SpeedingIndicator());
end

Though I'm not sure this will work, because inserting the SpeedingIndicator 
negates the first condition, probably causing the SpeedingIndicator to be 
retracted automatically. :)  But it's worth a try just to see if no-loop would 
override that somehow.

Apart from that, note that you can test the results of an accumulate in the 
returned value. (The "Double(doubleValue > 100)" part.)  YOu don't need the 
eval.  

Also, where is the "state" object coming from?  If it's a global, it's not a 
good idea to use them in the conditions of your rules.  Changes to them are not 
tracked by the rete.

--- On Thu, 12/3/09, reverselogic  wrote:

> From: reverselogic 
> Subject: [rules-users] CEP + prevent consequences from triggering multiple 
> times?
> To: rules-users@lists.jboss.org
> Date: Thursday, December 3, 2009, 12:41 PM
> 
> Hi,
> 
> I'm trying to write a rule in drools, which triggers once
> some condition is
> active for a specified time interval. For example, if a
> vehicle is over a
> speed limit (100 mph) for 30 seconds, I want to trigger an
> action. However,
> once this rule has fired, I don't want it to fire again
> until the vehicle
> has dropped below the speed limit (and gone over the limit
> again). The only
> way I've managed to model this is by defining two rules;
> one for determining
> when the vehicle is speeding and one for determining when
> it is not speeding
> and using a global object to track the state of the vehicle
> (see rules
> below).
> 
> rule "OverSpeedLimit" no-loop true
> when
>     $minSpeed : Double() from accumulate(
>         $speedingEvent :
> SpeedingEvent ($speed : speed)
>            
> over window:time( 30s )
>            
> from entry-point SpeedingStream,
>         min($speed)
>     );
>     
>     eval ($minSpeed > 100.0 &&
> !state.speeding)
> then
>     state.speeding = true
> end
> 
> rule "!OverSpeedLimit" no-loop true
> when
>     $speedingEvent : SpeedingEvent()
>         from entry-point
> SpeedingStream
>     eval ($speedingEvent.speed <= 100.0)
> then
>     state.speeding = false
> end
> 
> My questions is: Is there a better way to model the above
> behaviour,
> preferably as a single rule? The reason I ask is because I
> believe it would
> be too complicated for my users to define rules like this.
> Ideally, I would
> like to be able to create a DSL such as: "when Speed is
> above X for Y
> seconds then ..."
> 
> Any help greatly appreciated.
> 
> Thanks,
> 
> Paul
> 
> 
> 
> 
> -- 
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[rules-users] accumulate function help

[SzA84]

Hi!

I would like to use the accumulate function in my rule. I found this:
http://www.docjar.com/html/api/org/drools/compiler/PackageBuilderConfiguration.java.html

but i don't know exactly, which imports I need to the package and how can I
make it work.
This is my rule:

rule "aktivitas"
   when
   Adattipus(ertek == "mozgas")

   $max_sorszam : Number()
   from accumulate(MertAdat($sorszam : sorszam),
   max($sorszam))

   $aktiv_mozgas_cimke_szam : Number(intValue < 90)
   from accumulate(MertAdat(sorszam > $max_sorszam - (7
* 24 * 60), $cimke : cimke == "aktiv_mozgas"),
   count($cimke))
   then
   end


Sorry for this simple question!
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[rules-users] CEP + prevent consequences from triggering multiple times?

[reverselogic]

Hi,

I'm trying to write a rule in drools, which triggers once some condition is
active for a specified time interval. For example, if a vehicle is over a
speed limit (100 mph) for 30 seconds, I want to trigger an action. However,
once this rule has fired, I don't want it to fire again until the vehicle
has dropped below the speed limit (and gone over the limit again). The only
way I've managed to model this is by defining two rules; one for determining
when the vehicle is speeding and one for determining when it is not speeding
and using a global object to track the state of the vehicle (see rules
below).

rule "OverSpeedLimit" no-loop true
when
$minSpeed : Double() from accumulate(
$speedingEvent : SpeedingEvent ($speed : speed)
over window:time( 30s )
from entry-point SpeedingStream,
min($speed)
);

eval ($minSpeed > 100.0 && !state.speeding)
then
state.speeding = true
end

rule "!OverSpeedLimit" no-loop true
when
$speedingEvent : SpeedingEvent()
from entry-point SpeedingStream
eval ($speedingEvent.speed <= 100.0)
then
state.speeding = false
end

My questions is: Is there a better way to model the above behaviour,
preferably as a single rule? The reason I ask is because I believe it would
be too complicated for my users to define rules like this. Ideally, I would
like to be able to create a DSL such as: "when Speed is above X for Y
seconds then ..."

Any help greatly appreciated.

Thanks,

Paul




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Re: [rules-users] unable to resolve Type Declaration class

[Jaroslaw Kijanowski]

Looks like it is related to this open jira:
https://jira.jboss.org/jira/browse/GUVNOR-379

Cheers,
  Jarek

richarda wrote:
> Yeah, its in the classpath..  and to be doubly sure just before the code I do
> a 
> Signature s=new Signature();
> and that works.. so jvm can find the Signature object.
> 
> I have created https://jira.jboss.org/jira/browse/JBRULES-2348
> I would love to know if any workarounds are possible, this has ground my
> project to a halt.
> 
> thanks
> Ric
> 
> 
> Edson Tirelli-4 wrote:
>>Kris just reminded me of something: do you have the actual Message
>> class
>> in the test program classpath?
>>
>>When downloading the package from guvnor, I think it does not download
>> the model jar... only the actual rules, etc...
>>
>>Edson
>>
>> 2009/11/25 richarda 
>>
>>> Also tried under 5.1.0M1 release.. same issue :(
>>> Am i doing something wrong by declaring the @role in the Configuration
>>> section?
>>>
>>>
>>> richarda wrote:
 Still trying to get this to work.
 I have managed to create from a default (new) guvnor setup.

 Steps I do..
 1. Create fresh guvnor
 2. In eclipse create  Message.java file in package com.sample, and
>>> create
 a jar file
 3. In guvnor import the model for the Message.jar file
 4. In guvnor create a category
 5. Create an import statement for  import com.sample.Message
 6. Create a simple technical rule,  something like   when, Message(),
 then, System.out.println(".");
 7. Build the pkg
 8. download the pkg

 use the code from previous post to load the pkg...
 it works fine..

 now, goto guvnor advanced view and change the Configuration from:
 import com.sample.Message

 to:

 import com.sample.Message;

 declare Message
   @role( event )
 end


 build the pkg,
 download the pkg,
 run the test program...

 I get:
 org.drools.RuntimeDroolsException: unable to resolve Type Declaration
 class 'Message'
   at
>>> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:754)
   at

>>> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:515)
   at

>>> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
   at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:69)
   at com.sample.DroolsTest.main(DroolsTest.java:27)


 richarda wrote:
> So, my code is doing this:
>
>  KnowledgeBaseConfiguration conf =
> KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
> conf.setOption(EventProcessingOption.STREAM);
> KnowledgeBuilder builder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> try {
> File f = new File("/tmp/my.pkg");
> InputStream stream = new FileInputStream(f);
> if (stream == null) {
> jlog.fatal("Unable to find rule pkg");
> } else {
> jlog.info("adding pkg");
>
> builder.add(ResourceFactory.newInputStreamResource(stream),
> ResourceType.PKG);
> }
> } catch (Exception e) {
> e.printStackTrace();
> }
> KnowledgeBase kbase =
> KnowledgeBaseFactory.newKnowledgeBase(conf);
>
>>> kbase.addKnowledgePackages(builder.getKnowledgePackages());
> jlog.info("setup creating knowledge session");
> ksession = kbase.newStatefulKnowledgeSession();
> jlog.info(" setup ksession created");
>
>
> The pkg was created from Guvnor.
>
> If in the package declaration area in Guvnor,  (where you put the
>>> import
> statements)
> If I put
> declare Signature
>  @role ( event )
> end
>
> then build the package, save it to disk /tmp/my.pkg
> on startup I get:
>
>
>>> [#|2009-11-24T14:50:38.944+|WARNING|sun-appserver2.1|javax.enterprise.system.stream.err|_ThreadID=12;_ThreadName=pool-1-thread-3;_RequestID=7c35064d-757e-4519-b5eb-433db89e168d;|org.drools.RuntimeDroolsException:
> unable to resolve Type Declaration class 'Signature'
>  at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:754)
>  at
>
>>> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:515)
>  at
>
>>> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)
>
> I need to declare 'Signature' as an 'event'
> Am I doing this wrong?
>
> If I do this all in Eclipse and load the DRL files manually it all
>>> works.

>>> --
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>>> Sent from the drools - user mailing list archive a

Re: [rules-users] Can we use 'from' CE in Decision Tables ?

[groovenarula]

Thomas,

Thanks the response. I'm not sure how the newlines disappeared from my post
either. I do know I'd put them all there neatly formatted.

I'll try out solution you provided and let you know how it goes. I guess
I'll have to resort to quite a few evals in my decision tables, given that
'from' does not work in there. Don't like it, but if it works, at least I'll
be able to acheive my project's objects.

Thanks again for the solution. I'll let you know how it works out.

Gurvinder


Swindells, Thomas wrote:
> 
> Hi Gurvinder.
> 
> Not sure where new lines have gone from your email - it makes it very hard
> to read!
> 
> I've also been working on a project which uses decision tables and I
> couldn't find any way to use from statements either.  I'm hoping to get
> some time within the project to work on the drools decision table code to
> add some improvements, providing support for the from clause is one of
> these however I'm not sure whether I will get time or not.
> 
> However I think you may be able to restructure your code so that you don't
> need the from cause however I've not fully tested it. The code relies on
> their existing a constructor which takes the promotion code and the equals
> is defined that P1.equals(P2) when P1.code.equals(P2.code).
> 
> If you wanted to match that a promotion of a particular name exists then I
> think you can use the rule
> Rule "existsPromotion"  when
> Line(promos contains (new Promotion("HOTBUY"))) then ...
> 
> However the expression language doesn't support "not contains" which means
> you have to full back to use java:
> rule " contains d"
>   when
> line : Line(eval(!line.getPromos().contains(new
> Promotion("HOTBUY"
>   then
> ...
> end
> 
> If you prefer you could also define a method on Line
> containsPromotionWithCode(code) which would let you choose how to do the
> match.
> 
> As a spreadsheet the above would then look something like the following:
> RuleTable Hotbuys
> 
> 
> 
> 
> 
> NAME
> 
> CONDITION
> 
> ACTION
> 
> 
> 
> l :Line
> 
> 
> 
> 
> 
> eval(!l.getPromos().contains(new Promotion("$param")))
> 
> System.out.println("$param");
> 
> Rule Name
> 
> Number Directors
> 
> Warning
> 
> example1
> 
> Hotbuys
> 
> Hotbuys missing
> 
> 
> Hope that helps,
> 
> Thomas
> 
> 
> From: rules-users-boun...@lists.jboss.org
> [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of groovenarula
> Sent: 03 December 2009 06:51
> To: rules-users@lists.jboss.org
> Subject: [rules-users] Can we use 'from' CE in Decision Tables ?
> 
> Hello all, Is it possible to define the follow rule in a decision table :
> rule "Activate Promotion" when l : Line( ) not ( Promotion ( code ==
> "HOTBUY" ) from l.promos ) then #do some action end The rule above works
> perfectly for what I need when defined in a rule file. However, when I try
> to define it in a decision table so that the 'code' can be feed from a
> spreadsheet, I use the following values in the rules cells : RuleTable
> HOTBUYS CONDITION ACTION l : Line not ( Promotion ( code == "$param" )
> from l.promos ) System.out.println("$param added"); PROMOTION PROMOTION
> HOTBUY BESTBUY I'm getting the following parser errors [10,17]: [ERR 101]
> Line 10:17 no viable alternative at input 'Promotion' in rule "_11" in
> pattern Line [10,29]: [ERR 101] Line 10:29 no viable alternative at input
> 'code' in rule "_11" [10,63]: [ERR 102] Line 10:63 mismatched input ')'
> expecting 'then' in rule "_11" java.lang.IllegalArgumentException: Could
> not parse knowledge. at
> com.sample.DecisionTableTest.readKnowledgeBase(DecisionTableTest.java:85)
> at com.sample.DecisionTableTest.main(DecisionTableTest.java:28) Also in
> Eclipse IDE, I get the following error : "Unknown error while parsing.
> This is a bug. Please contact the Development team." NewPromotions.xls Is
> it possible to use 'from' conditional element in decision tables ? If so,
> what am I doing wrong. If not, then what's the best approach to implement
> the rule above in a decision table. I'm running Drools 5.1.0M1 in Eclipse.
> Help truly appreciated. Gurvinder
> 
> View this message in context: Can we use 'from' CE in Decision Tables
> ?
> Sent from the Drools - User mailing list
> archive at Nabble.com.
> 
> 
> 
> **
> This message is confidential and intended only for the addressee. If you
> have received this message in error, please immediately notify the
> postmas...@nds.com and delete it from your system as well as any copies.
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Re: [rules-users] Drools Design Patterns

[Mark Proctor]

Wolfgang Laun wrote:
2009/12/3 Mark Proctor >


http://www.jboss.org/community/wiki/UsagePatterns


This link is OK, but from there on,

* some point to "An article with that name does not exist. It may
  have been renamed or deleted."
* one or two forward you to sketchy pages, not really explaining
  anything,
* a few lead to theoretical discussions, not remotely showing
  anything like workable examples.

Not perfect, but at least consistent, moderately readable and, 
possibly, even helpful is Cousin Jess' WiKi, see

http://www.jessrules.com/jesswiki/view
I put it up years ago with some titles to get it started in the hope 
that the community would continue with it and flesh it out, as they 
discovered things. No one ever did :( I referenced it as a starting 
point for Ross if he wants to share his findings.


Mark


-W

 



Mark
Ross H wrote:

I've been using Drools for about a year now, but still consider
myself a newbie, 
although I'm starting to get a better idea of how to implement

solutions, for the
experts this is probably second nature.

Whilst the Drools doco is very good, and the blog/mailing lists
are a great source of info,
and there are now some very good books on Drools, there is a hugh
amount of 
functionality emerging in the Drools project, it's almost
becoming a full time activity just 
to keep up. I wonder if the time is coming to start collecting
real experiences into a form that 
makes it easier for new users to work out how to attack their
problem.  


I hate to re-invent the wheel and if this exists in some form
elsewhere, I'd like to know.
If not, then it might be good to capture this knowledge in some
way. I'm interested in 
some views from the user community on what they would like to see. 


Maybe the way to go is add some pages to the JBoss Drools wiki
and evolve it from there,
and provide a way for the drools user community to contribute to
the overall success of Drools, 
rather than just ask questions.





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Re: [rules-users] Can we use 'from' CE in Decision Tables ?

[Swindells, Thomas]

Hi Gurvinder.

Not sure where new lines have gone from your email - it makes it very hard to 
read!

I've also been working on a project which uses decision tables and I couldn't 
find any way to use from statements either.  I'm hoping to get some time within 
the project to work on the drools decision table code to add some improvements, 
providing support for the from clause is one of these however I'm not sure 
whether I will get time or not.

However I think you may be able to restructure your code so that you don't need 
the from cause however I've not fully tested it. The code relies on their 
existing a constructor which takes the promotion code and the equals is defined 
that P1.equals(P2) when P1.code.equals(P2.code).

If you wanted to match that a promotion of a particular name exists then I 
think you can use the rule
Rule "existsPromotion"  when
Line(promos contains (new Promotion("HOTBUY"))) then ...

However the expression language doesn't support "not contains" which means you 
have to full back to use java:
rule " contains d"
  when
line : Line(eval(!line.getPromos().contains(new 
Promotion("HOTBUY"
  then
...
end

If you prefer you could also define a method on Line 
containsPromotionWithCode(code) which would let you choose how to do the match.

As a spreadsheet the above would then look something like the following:
RuleTable Hotbuys





NAME

CONDITION

ACTION



l :Line





eval(!l.getPromos().contains(new Promotion("$param")))

System.out.println("$param");

Rule Name

Number Directors

Warning

example1

Hotbuys

Hotbuys missing


Hope that helps,

Thomas


From: rules-users-boun...@lists.jboss.org 
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of groovenarula
Sent: 03 December 2009 06:51
To: rules-users@lists.jboss.org
Subject: [rules-users] Can we use 'from' CE in Decision Tables ?

Hello all, Is it possible to define the follow rule in a decision table : rule 
"Activate Promotion" when l : Line( ) not ( Promotion ( code == "HOTBUY" ) from 
l.promos ) then #do some action end The rule above works perfectly for what I 
need when defined in a rule file. However, when I try to define it in a 
decision table so that the 'code' can be feed from a spreadsheet, I use the 
following values in the rules cells : RuleTable HOTBUYS CONDITION ACTION l : 
Line not ( Promotion ( code == "$param" ) from l.promos ) 
System.out.println("$param added"); PROMOTION PROMOTION HOTBUY BESTBUY I'm 
getting the following parser errors [10,17]: [ERR 101] Line 10:17 no viable 
alternative at input 'Promotion' in rule "_11" in pattern Line [10,29]: [ERR 
101] Line 10:29 no viable alternative at input 'code' in rule "_11" [10,63]: 
[ERR 102] Line 10:63 mismatched input ')' expecting 'then' in rule "_11" 
java.lang.IllegalArgumentException: Could not parse knowledge. at 
com.sample.DecisionTableTest.readKnowledgeBase(DecisionTableTest.java:85) at 
com.sample.DecisionTableTest.main(DecisionTableTest.java:28) Also in Eclipse 
IDE, I get the following error : "Unknown error while parsing. This is a bug. 
Please contact the Development team." NewPromotions.xls Is it possible to use 
'from' conditional element in decision tables ? If so, what am I doing wrong. 
If not, then what's the best approach to implement the rule above in a decision 
table. I'm running Drools 5.1.0M1 in Eclipse. Help truly appreciated. Gurvinder

View this message in context: Can we use 'from' CE in Decision Tables 
?
Sent from the Drools - User mailing list 
archive at Nabble.com.



**
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Re: [rules-users] Drools Design Patterns

[Wolfgang Laun]

2009/12/3 Mark Proctor 

>  http://www.jboss.org/community/wiki/UsagePatterns
>

This link is OK, but from there on,

   - some point to "An article with that name does not exist. It may have
   been renamed or deleted."
   - one or two forward you to sketchy pages, not really explaining
   anything,
   - a few lead to theoretical discussions, not remotely showing anything
   like workable examples.

Not perfect, but at least consistent, moderately readable and, possibly,
even helpful is Cousin Jess' WiKi, see
http://www.jessrules.com/jesswiki/view

-W



>
> Mark
> Ross H wrote:
>
> I've been using Drools for about a year now, but still consider myself a
> newbie,
> although I'm starting to get a better idea of how to implement solutions,
> for the
> experts this is probably second nature.
>
>  Whilst the Drools doco is very good, and the blog/mailing lists are a
> great source of info,
> and there are now some very good books on Drools, there is a hugh amount
> of
> functionality emerging in the Drools project, it's almost becoming a full
> time activity just
> to keep up. I wonder if the time is coming to start collecting real
> experiences into a form that
> makes it easier for new users to work out how to attack their problem.
>
>  I hate to re-invent the wheel and if this exists in some form elsewhere,
> I'd like to know.
> If not, then it might be good to capture this knowledge in some way. I'm
> interested in
> some views from the user community on what they would like to see.
>
>  Maybe the way to go is add some pages to the JBoss Drools wiki and evolve
> it from there,
> and provide a way for the drools user community to contribute to the
> overall success of Drools,
> rather than just ask questions.
>
>
>  --
>
> ___
> rules-users mailing 
> listrules-us...@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
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Re: [rules-users] Drools Design Patterns

[Mark Proctor]

http://www.jboss.org/community/wiki/UsagePatterns

Mark
Ross H wrote:
I've been using Drools for about a year now, but still consider myself 
a newbie, 
although I'm starting to get a better idea of how to implement 
solutions, for the

experts this is probably second nature.

Whilst the Drools doco is very good, and the blog/mailing lists are a 
great source of info,
and there are now some very good books on Drools, there is a hugh 
amount of 
functionality emerging in the Drools project, it's almost becoming a 
full time activity just 
to keep up. I wonder if the time is coming to start collecting real 
experiences into a form that 
makes it easier for new users to work out how to attack their problem.  

I hate to re-invent the wheel and if this exists in some form 
elsewhere, I'd like to know.
If not, then it might be good to capture this knowledge in some way. 
I'm interested in 
some views from the user community on what they would like to see. 

Maybe the way to go is add some pages to the JBoss Drools wiki and 
evolve it from there,
and provide a way for the drools user community to contribute to the 
overall success of Drools, 
rather than just ask questions.





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[rules-users] Drools Design Patterns

[Ross H]

I've been using Drools for about a year now, but still consider myself a
newbie,
although I'm starting to get a better idea of how to implement solutions,
for the
experts this is probably second nature.

Whilst the Drools doco is very good, and the blog/mailing lists are a great
source of info,
and there are now some very good books on Drools, there is a hugh amount of
functionality emerging in the Drools project, it's almost becoming a full
time activity just
to keep up. I wonder if the time is coming to start collecting real
experiences into a form that
makes it easier for new users to work out how to attack their problem.

I hate to re-invent the wheel and if this exists in some form elsewhere, I'd
like to know.
If not, then it might be good to capture this knowledge in some way. I'm
interested in
some views from the user community on what they would like to see.

Maybe the way to go is add some pages to the JBoss Drools wiki and evolve it
from there,
and provide a way for the drools user community to contribute to the overall
success of Drools,
rather than just ask questions.
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Re: [rules-users] Eclipse plugin with latest Galileo

[Ross H]

My approach is to extract the zip and put it into my dropins directory
within eclipse:

eclipse
  dropins
drools-5.1.0.SNAPSHOT-eclipse-all

I would make sure you get rid of all the artefacts in your current eclipse
features/plugins dirs first. Maybe a clean install of eclipse might be best.

2009/12/3 chris richmond 

> How did you get the plugin.  I see it in the hudson link, but where are the
> instructions for installing it that way and not using the eclipse update
> site?  The standard plugin procedure did not work for me. In other words,
> using that Hudson download, how do I install the plugin?
>
> Thanks,
> Chris
>
> 2009/12/2 Ross H 
>
> Just did a quick check, works for me. I'm running Galileo on OSX.
>>
>>
>> On Thu, Dec 3, 2009 at 7:35 PM, Ross H  wrote:
>>
>>>
>>> https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/
>>>
>>> 2009/12/3 Leonardo Gomes 
>>>
>>> I've seen about three posts about that lately (including mine) and no one
 seemed to have solved it yet.

 What's the URL for hudson?

 Thanks,
 Leo.

 2009/12/3 Ross H 

 I think there was a previous post on this. Try the latest from Hudson
> and see if that works.
>
> 2009/12/3 chris richmond 
>
>> Is anyone successfully using the IDE plugin with the latest Galileo
>> version of Eclipse. I cannot get it to debug using Galileo(my previous 
>> post
>> concerning debug as)  I tested instlaling the IDE plugin by using the IDE
>> update site link on the following versions.  I normally use the Galileo, 
>> but
>> tried the other for troubleshooting this
>>
>> Galileo standard
>> Galileo EE
>> Ganymede Standard
>>
>>
>> The plugin appears to install just fine with all three, and the
>> DroolsTest.java that is added when I create a new Drools project runs 
>> fine
>> in all three.  However, I am only able to debug as Drools application 
>> using
>> Ganymede.So is it simply not possible to use the IDE update link with
>> the latest Eclipse(Galileo)?
>>
>> Thanks,
>> Chris
>>
>> ___
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Re: [rules-users] Eclipse plugin with latest Galileo

[chris richmond]

How did you get the plugin.  I see it in the hudson link, but where are the
instructions for installing it that way and not using the eclipse update
site?  The standard plugin procedure did not work for me. In other words,
using that Hudson download, how do I install the plugin?

Thanks,
Chris

2009/12/2 Ross H 

> Just did a quick check, works for me. I'm running Galileo on OSX.
>
>
> On Thu, Dec 3, 2009 at 7:35 PM, Ross H  wrote:
>
>>
>> https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/
>>
>> 2009/12/3 Leonardo Gomes 
>>
>> I've seen about three posts about that lately (including mine) and no one
>>> seemed to have solved it yet.
>>>
>>> What's the URL for hudson?
>>>
>>> Thanks,
>>> Leo.
>>>
>>> 2009/12/3 Ross H 
>>>
>>> I think there was a previous post on this. Try the latest from Hudson and
 see if that works.

 2009/12/3 chris richmond 

> Is anyone successfully using the IDE plugin with the latest Galileo
> version of Eclipse. I cannot get it to debug using Galileo(my previous 
> post
> concerning debug as)  I tested instlaling the IDE plugin by using the IDE
> update site link on the following versions.  I normally use the Galileo, 
> but
> tried the other for troubleshooting this
>
> Galileo standard
> Galileo EE
> Ganymede Standard
>
>
> The plugin appears to install just fine with all three, and the
> DroolsTest.java that is added when I create a new Drools project runs fine
> in all three.  However, I am only able to debug as Drools application 
> using
> Ganymede.So is it simply not possible to use the IDE update link with
> the latest Eclipse(Galileo)?
>
> Thanks,
> Chris
>
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>>>
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Re: [rules-users] Eclipse plugin with latest Galileo

[Ross H]

Just did a quick check, works for me. I'm running Galileo on OSX.

On Thu, Dec 3, 2009 at 7:35 PM, Ross H  wrote:

>
> https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/
>
> 2009/12/3 Leonardo Gomes 
>
> I've seen about three posts about that lately (including mine) and no one
>> seemed to have solved it yet.
>>
>> What's the URL for hudson?
>>
>> Thanks,
>> Leo.
>>
>> 2009/12/3 Ross H 
>>
>> I think there was a previous post on this. Try the latest from Hudson and
>>> see if that works.
>>>
>>> 2009/12/3 chris richmond 
>>>
 Is anyone successfully using the IDE plugin with the latest Galileo
 version of Eclipse. I cannot get it to debug using Galileo(my previous post
 concerning debug as)  I tested instlaling the IDE plugin by using the IDE
 update site link on the following versions.  I normally use the Galileo, 
 but
 tried the other for troubleshooting this

 Galileo standard
 Galileo EE
 Ganymede Standard


 The plugin appears to install just fine with all three, and the
 DroolsTest.java that is added when I create a new Drools project runs fine
 in all three.  However, I am only able to debug as Drools application using
 Ganymede.So is it simply not possible to use the IDE update link with
 the latest Eclipse(Galileo)?

 Thanks,
 Chris

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>>>
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Re: [rules-users] Eclipse plugin with latest Galileo

[Ross H]

https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/

2009/12/3 Leonardo Gomes 

> I've seen about three posts about that lately (including mine) and no one
> seemed to have solved it yet.
>
> What's the URL for hudson?
>
> Thanks,
> Leo.
>
> 2009/12/3 Ross H 
>
> I think there was a previous post on this. Try the latest from Hudson and
>> see if that works.
>>
>> 2009/12/3 chris richmond 
>>
>>> Is anyone successfully using the IDE plugin with the latest Galileo
>>> version of Eclipse. I cannot get it to debug using Galileo(my previous post
>>> concerning debug as)  I tested instlaling the IDE plugin by using the IDE
>>> update site link on the following versions.  I normally use the Galileo, but
>>> tried the other for troubleshooting this
>>>
>>> Galileo standard
>>> Galileo EE
>>> Ganymede Standard
>>>
>>>
>>> The plugin appears to install just fine with all three, and the
>>> DroolsTest.java that is added when I create a new Drools project runs fine
>>> in all three.  However, I am only able to debug as Drools application using
>>> Ganymede.So is it simply not possible to use the IDE update link with
>>> the latest Eclipse(Galileo)?
>>>
>>> Thanks,
>>> Chris
>>>
>>> ___
>>> rules-users mailing list
>>> rules-users@lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>>
>>
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Re: [rules-users] Eclipse plugin with latest Galileo

[Leonardo Gomes]

I've seen about three posts about that lately (including mine) and no one
seemed to have solved it yet.

What's the URL for hudson?

Thanks,
Leo.

2009/12/3 Ross H 

> I think there was a previous post on this. Try the latest from Hudson and
> see if that works.
>
> 2009/12/3 chris richmond 
>
>> Is anyone successfully using the IDE plugin with the latest Galileo
>> version of Eclipse. I cannot get it to debug using Galileo(my previous post
>> concerning debug as)  I tested instlaling the IDE plugin by using the IDE
>> update site link on the following versions.  I normally use the Galileo, but
>> tried the other for troubleshooting this
>>
>> Galileo standard
>> Galileo EE
>> Ganymede Standard
>>
>>
>> The plugin appears to install just fine with all three, and the
>> DroolsTest.java that is added when I create a new Drools project runs fine
>> in all three.  However, I am only able to debug as Drools application using
>> Ganymede.So is it simply not possible to use the IDE update link with
>> the latest Eclipse(Galileo)?
>>
>> Thanks,
>> Chris
>>
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Re: [rules-users] Eclipse plugin with latest Galileo

[Ross H]

I think there was a previous post on this. Try the latest from Hudson and
see if that works.

2009/12/3 chris richmond 

> Is anyone successfully using the IDE plugin with the latest Galileo version
> of Eclipse. I cannot get it to debug using Galileo(my previous post
> concerning debug as)  I tested instlaling the IDE plugin by using the IDE
> update site link on the following versions.  I normally use the Galileo, but
> tried the other for troubleshooting this
>
> Galileo standard
> Galileo EE
> Ganymede Standard
>
>
> The plugin appears to install just fine with all three, and the
> DroolsTest.java that is added when I create a new Drools project runs fine
> in all three.  However, I am only able to debug as Drools application using
> Ganymede.So is it simply not possible to use the IDE update link with
> the latest Eclipse(Galileo)?
>
> Thanks,
> Chris
>
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Re: [rules-users] Regarding Drools Rules Engine

[Wolfgang Laun]

Some remarks, see below.

2009/12/2 Anupindi RaviShankar :
> Hi All,
>
> We are evaluating Drools rules engine for one of the clients. The client
has
> given some parameters based on which evaluation needs to be done.
> We were not able to get this information from Drools site. So need your
help
> in getting this information.
>
> • Number of transactions Drools Engine can support. Can it support around
> 1-1.5 million transactions.

The term "transaction" is typically used for a "unit of work performed
within
a (database) system". If this is meant, then the question askes is usually
"how many per second".

> • How can we introduce enforcement levels, overriding authority etc.?

I'Ve been reading a lot about rule based systems, but "enforcement level"
is absolutely new to me. (Google comes up with some strange, unrelated
quotes.) Also, "overriding authority" seems to be more related to the law
than anthing else.

> • How can the controlling class get to know which rule was fired and which
> was overridden ?

The concept of "overriding a rule" is also unusual with respect to rules.
There is nothing I can relate to this verb's meaning.

-W

> • Does the rule engine support the tracking of different rule types?
>
> Can you please provide your updates on the same.
>
> Thanks
> Ravi
>
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