2009/10/28 Richard Ambridge <Richard.Ambridge@sun.com>

Hi,
 Trying to get to grips with Fusion and absence of events...

 If I have a Bean that has just a simple variable,  e.g.   class
MyBean {   private String name;   getter+setter }

 I want to use events to determine when an object with  name=="one"
is available, and no object with name=="two" appears within 10 seconds..

 So, I write a rule:

 declare MyBean
  @role( event)
end

rule "myrule'
  when
      $a : MyBean(name=="one");
      not( MyBean(name=="two", this after [0s,10s] $a))
  then
      //do something
end


If I inject  an object with Name="one",  and then wait 10seconds, I
get the 'myrule' fired,  great!

But, if i inject an object with name="one" and then 1second later I
inject an object with name="other"
the 'myrule' is fired..

Looking at the manual, this seems kind of correct,  the rule says  if
I have a "one" and not a bean with name=="two"
which I do,  as I have a 'one' and a 'other'

But, how do I write the rule to say,  I have a 'one' and 'two' doesn't
turn up?

Cheers
Ric

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