[rules-users] Ruleflow and persistence

[DELBART Vincent]

I have really those results in the first set (I put a project in the forum)

If I put an update I loop...

With a no-loop it seems work... But I have the same result without my ruleflow.

vdelbart

-----Message d'origine-----
De : rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] De la part de Kris Verlaenen
Envoyé : lundi 10 septembre 2007 16:37
À : Rules Users List
Objet : Re: [rules-users] Ruleflow and persistence

The expected behavior is actually the second one, did you really get those results when executing the first set?  The reason is that you should notify the engine if you change a product (so it can re-evaluate).  Otherwise, it will never know that the product has changed price and will still use the old price.  So you should add a update($p) statement after changing your product if you want the engine to take that change into account.

Kris


----- Original Message ----- 
From: "vdelbart" <delbart.v at mipih.fr>
To: <rules-users at lists.jboss.org>
Sent: Monday, September 10, 2007 4:17 PM
Subject: [rules-users] Ruleflow and persistence


>
> Hello,
>
> I have a problem with this ruleflow :
>
> http://www.nabble.com/file/p12593732/ruleflow.jpg
>
> This two rules package doesn't work in the same way :
>
> First package :
>
> #created on: 29 août 2007
> package reductionExample1
>
> import model.*
>
> rule "global rule"
> ruleflow-group "WorldReduction"
> #include attributes such as "salience" here...
> when
> $p:Product(year == 2006)
> then
> #actions
> System.out.println("Global rule");
> System.out.println("$p.getPrice() : " + $p.getPrice());
> $p.setPrice($p.getPrice()*1.1);
> end
> rule "local rule"
> ruleflow-group "StateReduction"
> #include attributes such as "salience" here...
> when
> $p:Product(year < 2007, $price: price)
> then
> #actions
> System.out.println("Local rule");
> System.out.println("$price : " + $price);
> System.out.println("$p.getPrice() : " + $p.getPrice());
> $p.setPrice($price * 1.2);
> end
>
> I have :
> Before : Product(name=Adidas, year=2006, price=100.0)
> Global rule
> $p.getPrice() : 100.0
> Local rule
> $price : 110.00000000000001
> $p.getPrice() : 110.00000000000001
> After : Product(name=Adidas, year=2006, price=132.0)
>
>
> Second package :
>
> #created on: 29 août 2007
> package reductionExample1
>
> import model.*
>
> rule "global rule"
> ruleflow-group "WorldReduction"
> #include attributes such as "salience" here...
> when
> $p:Product(year == 2006, $priceGlobal: price)
> then
> #actions
> System.out.println("Global rule");
> System.out.println("$price : " + $priceGlobal);
> System.out.println("$p.getPrice() : " + $p.getPrice());
> $p.setPrice($p.getPrice()*1.1);
> end
> rule "local rule"
> ruleflow-group "StateReduction"
> #include attributes such as "salience" here...
> when
> $p:Product(year < 2007, $price: price)
> then
> #actions
> System.out.println("Local rule");
> System.out.println("$price : " + $price);
> System.out.println("$p.getPrice() : " + $p.getPrice());
> $p.setPrice($price * 1.2);
> end
>
> I have :
>
> Before : Product(name=Adidas, year=2006, price=100.0)
> Global rule
> $price : 100.0
> $p.getPrice() : 100.0
> Local rule
> $price : 100.0
> $p.getPrice() : 110.00000000000001
> After : Product(name=Adidas, year=2006, price=120.0)
>
>
> What is the normal execution (for me the first way) and why is different ?
>
> thanks,
>
> vdelbart
>
> -- 
> View this message in context: 
> http://www.nabble.com/Ruleflow-and-persistence-tf4415033.html#a12593732
> Sent from the drools - user mailing list archive at Nabble.com.
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users 

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