[rules-users] Dynamic Rules

[Yamil Bracho]

Use a global variable.
In your java code use a property file and the "inject" to drools using the setGlobal method() of your session.
session.setGlobal("maxBalance", 100) 
and in your drl


global java.lang.Integer maxBalance;
rule “basic rule”                when                                Account($balance : balance < maxBalance)                then                                  System.out.println(“Account balance: “ + $balance + “ is less than " + maxBalance.toString() );                end
From: gmacgregor at pocketkings.ie
To: rules-users at lists.jboss.org
Date: Mon, 8 Feb 2010 18:11:57 +0000
Subject: [rules-users] Dynamic Rules
















Hi All,

 

Just getting started using Drools and I have a question
about dynamic rules. I have written a simple application based on one of the
tutorials.

 

Rule:

rule “basic rule”

                when

                                Account($balance
: balance < 100)

                then
 

                                System.out.println(“Account
balance: “ + $balance + “ is less than 100“);

                end

 

 

This rule works fine in my test application but is there a
way to replace the static 100 with a dynamic value like, AccountRulesConfig.lowBalance,
basically testing against the value of another object rather than a static
value?

 

Thanks

 

 Glenn 

 		 	   		  
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