[rules-users] Drools basic questions.

[Anstis, Michael (M.)]

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-----Original Message-----
From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Mithun
Sent: 17 May 2007 06:04
To: rules-users at lists.jboss.org
Subject: [rules-users] Drools basic questions.


I am new to drools, so i have some basic doubts. 

1. what does the dollar sign represent in the following rule? what is
the
difference when u prefix and dont prefix a variable with the dollar
sign?
    - $stilton : Cheese( type == "stilton" )
      Cheesery( cheeses contains $stilton )

2. what is the difference between the following rule statements?
    - cheapStilton : Cheese( type == "stilton", price < 10 ) and
    - cheapStilton : Cheese( type == "stilton", price < newPrice)

   how does the rule base get access to the variable newPrice, in the
above
rule statement? Please help.

Thank you.
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