[rules-users] Drools basic questions.

[Anstis, Michael (M.)]

1. See previous email about identifiers. The dollar sign has no
significance other than some people find it makes identifying variables
in a rule easier.

2. This is a pattern that will match any Person object in WorkingMemory.
The variable "likes" will be bound to the value of field
"favouriteCheese" - i.e. personInstance.getFavouriteCheese().

If you have not already done so I suggest you read the documentation. 

-----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 07:14
To: rules-users at lists.jboss.org
Subject: [rules-users] Drools basic questions.


hi all,

I am new to Drools, so i have some basic questions. I am sorry if my
questions sound silly. Please help.

1. What does it mean when you prefix a variable with a dollar sign in a
.drl
file? If possible give a simple example please.
2. Please explain the following line of code:
    - Person( likes : favouriteCheese )
    This is my understanding of the above code.
           - 'favouriteCheese' is a global variable which we are
assingining
to 'likes' and an object of type 'Person' is created
             by seding 'likes' as a paramerter to the constructor.
Please
correct me if i am wrong. Thank you.
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