[rules-users] Problem with update(fact)

[Chris Woodrow]

Hi,
This doesn't seem to be a bug, IMHO, since no-loop is supposed (according to
the doc). In this case, factA is called once (thanks to "no-loop", than
fact2 is called once, and so on. Do you mean no-loop should still be on if
it has been used once for a given rule?

Chris

2007/7/3, Felipe Piccolini <felipe.piccolini at bluesoft.cl>:
>
> 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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>
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