It's standard java pass by reference stuff:
String a = "xxx";
String b = a;
System.out.println( b ); // gives "xxx"
a = "yyyy";
System.out.println( b ); // still gives "xxx"

Mark

Matthew Shaw wrote:

Why is it seeing it as a new object? I am asserting it into the working memory before hand.

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mark Proctor
Sent: Wednesday, 30 May 2007 1:27 AM
To: Rules Users List
Subject: Re: [rules-users] Double

highDutyTotal is a new fact inside of your consequence, so when you call modify, it's actually working as an assert - you are not doing a modify there at all.

Mark
Matthew Shaw wrote:
Hi there,

seeing some very strange behaviour from the following rule

rule "sum higher rate totals"

salience 970

no-loop true

when

timesheet : TimesheetTransferObject( )

total : SheetTotalTransferObject($ihrisType : ihrisType -> ($ihrisType.equals(ihrisType.getDutyHourTotal())), $payRate : payRate -> ($payRate.equals(timesheet.getOfficer().getSubstantiativeRate()) == false))

eval(total.getValue().doubleValue() > 0)

highDutyTotal : Double( )

then

highDutyTotal = new Double(DateUtils.addElapsedTimes(highDutyTotal.doubleValue(), total.getValue().doubleValue()));

modify(highDutyTotal)

end

In my test the rule fires twice when I don't call modify. Which is the expected behaviour because I have two unqiue SheetTotalTransferObject objects.

However when I call modify on the Double object the rule only runs once. This is incorrect behaviour.

Can anyone offer any clues as to what may be happening here. Is it to do with my use of the Double type?

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