[rules-users] How to write a rule that fires when it matches against specific facts in working memory.

[groovenarula]

Hello,

I have a fact called 'Option' :

public class Option {
	private String code;

	private Item item;
	public String getCode() {
		return code;
	}
	public void setCode(String optionCode) {
		this.code = optionCode;
	}

At any point in time, the working memory can have several Option instances
with different code values. My rules need to fire specifically when the
working memory contains a specific set of options. e.g. Rule 1 should fire
if and only if the working memory contains 2 option instances one with code
"P1" and the other with "P2" (order should not matter).

I tried to use 'forall' as follows :

rule "Matched Options" 
   	when
		forall (
			Option ( code == "P1" || code == "P2" ) 
			   )
	then
		//insert( new IsPriced( i ) );	
		System.out.println ( "Priced using G/S ");
end

However, the rule above never fires. Maybe I should be taking a different
approach. I'm still learning through how to create rules. So any
help/suggestions on how to tackle the above will be appreciated.

Thanks
Gurvinder

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