[rules-users] Issue with simple accumulate sum rule

[Wolfgang Laun]

On 16/09/2013, stelomax <stephen.lomax at mattelli.com> wrote:
> Problem solved...was not an issue with Accumulate.  It was an issue with my
> understanding of decision tables.
>
> I had missed the all important "update" off the action of the decision
> table.  This lead to some peculiar behavior where println the fact worked
> fine, but executing a rule on the fact took the previous value of the fact.
> I am assuming this is down to the way the rules engine works when firing
> rules as opposed to simply retrieving values?

If your decisions depend on what's going on behind your back, you need
to be told, too ;-) And that's also the basic principle of rule
evaluation where facts may change.

-W

>
> Regardless the issue is resolved, thanks for your help (and patience) as
> always.
>
> Steve
>
>
>
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