[rules-users] Problem with update(fact)

[Felipe Piccolini]

I know I already asked this in a previous email, but no answer and  
diferent subject... so I'll ask again

I have an issue using update in 2 rules that update the same  
object... a loop is created even when I try to
avoid the loop adding an extra condition to each rule... Im inserting  
an ArrayList as a fact too, so I can check
the extra condition...

Can anyone tell me how to fix this?

Consider this:
//-------RULES-----------------------------
package cl.bluesoft.test

#list any import classes here.
import java.util.List
import java.util.ArrayList

import cl.bluesoft.test.rules.Fact

#declare any global variables here

rule "test update A"
     salience 699
     no-loop
	when
		$f : Fact($n: number > 0)
		$list: ArrayList( this excludes "key1")
	then
		System.out.println("A-fact number1:"+$f.getNumber()+" list 1:"+$list);
		$list.add("key1");
		$f.setNumber($n + 1);
		update ($f);
		update ($list);
		System.out.println("A-fact number2:"+$f.getNumber()+" list 2:"+$list);
end


rule "test update B"
     salience 699
     no-loop
	when
		$f : Fact($n: number > 1)
		$list: ArrayList( this excludes "key2")
	then
		System.out.println("B-fact number1:"+$f.getNumber()+" list 1:"+$list);
		$list.add("key2");
		$f.setNumber($n + 1);
		update ($f);
		update ($list);
		System.out.println("B-fact number2:"+$f.getNumber()+" list 2:"+$list);
end

//-------FACT-----------------------------
public class Fact implements Serializable {
	private static final long serialVersionUID = 331627137981862975L;
	
	private int number;
	
	public Fact(int number){
		this.number	= number;
	}
	
	public Fact(){
		this(0);
	}

	/**
	 * @return the number
	 */
	public int getNumber() {
		return number;
	}

	/**
	 * @param number the number to set
	 */
	public void setNumber(int number) {
		this.number = number;
	}
	
}

//------TEST---------
public class TestUpdateFact implements Serializable {

	private static final long serialVersionUID = -574789596641083743L;

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		RuleBase ruleBase = RuleBaseFactory.newRuleBase();
		Package pkg = builder.getPackage();
		....
		WorkingMemory session = ruleBase.getStatefulSession();
		...etc etc...

		List list = new ArrayList();
		
		Fact fact1 = new Fact(1);

		session.fireAllRules();

		....etc, etc...
		
	}

}

//--------OUTPUT------------
A-fact number1:1 list 1:[]
A-fact number2:2 list 2:[key1]
B-fact number1:2 list 1:[key1]
B-fact number2:3 list 2:[key1, key2]
A-fact number1:3 list 1:[key1, key2]
A-fact number2:4 list 2:[key1, key2, key1]
B-fact number1:4 list 1:[key1, key2, key1]
B-fact number2:5 list 2:[key1, key2, key1, key2]
A-fact number1:5 list 1:[key1, key2, key1, key2]
A-fact number2:6 list 2:[key1, key2, key1, key2, key1]
B-fact number1:6 list 1:[key1, key2, key1, key2, key1]
B-fact number2:7 list 2:[key1, key2, key1, key2, key1, key2]
A-fact number1:7 list 1:[key1, key2, key1, key2, key1, key2]
A-fact number2:8 list 2:[key1, key2, key1, key2, key1, key2, key1]
B-fact number1:8 list 1:[key1, key2, key1, key2, key1, key2, key1]

.... for ever.....

So I have a loop... only when I use update and both rules...   
condition about the
list not containing "key1" and "key2" seems not properly chequed... I  
dont know...

Can somebody help me? Am I missing something here?

Thanks.


Felipe Piccolini M.
felipe.piccolini at bluesoft.cl




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