[rules-users] Inconsistent output when @PropertyReactive is used

[Mark Proctor]

property reactive will not work with ‘from’.

Mark

On 15 Jan 2014, at 23:33, Sonata <plz.write.to at gmail.com> wrote:

> Below is a test to demonstrate it, also add the @PropertyReactive property to
> MyClass()
> 
> package com.sample;
> 
> rule base
> when m : MyClass(data == null)
> then
> end
> 
> rule "2" extends base
> when
> 	String()
> 	MyClass(value != "test") from m
> then
> 	System.out.println("2 fired");
> end
> 
> rule "1" extends base
> salience 1
> when
> 	MyClass(value == null) from m
> then
> 	System.out.println("1 fired");
> 	insert(new String());
> 	modify(m) { setValue("test") }
> end
> 
> The test above should output "1 fired" and "2 fired".
> Although we have set the value to "test", rule "2" supposes to not fire, but
> it is in fact expected to fire due to the non-reactive property of CE
> "from", and the result confirms this.
> 
> But if we reorder the code in rule "1" to
> 
> rule "1" extends base
> salience 1
> when
> 	MyClass(value == null) from m
> then
> 	System.out.println("1 fired");
> 	modify(m) { setValue("test") }
> 	insert(new String());
> end
> 
> Then you get only "1 fired", as if CE "from" is reactive again.
> This only happens when you have the @PropertyReactive property added to
> MyClass()
> Version tested are 5.5.0.Final and 5.6.0.Final
> 
> Could the Drools team review this? Thank you.
> 
> 
> 
> --
> View this message in context: http://drools.46999.n3.nabble.com/Inconsistent-output-when-PropertyReactive-is-used-tp4027709.html
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