[rules-users] What is the correct approach towards using Drools?

[Matteo Cusmai]

Yeah, you are right, i was talking about fact events.
It seemed to me that the use case described by Ejaz was in streaming
context.


On Thu, Feb 14, 2013 at 11:34 AM, Wolfgang Laun <wolfgang.laun at gmail.com>wrote:

> On 14/02/2013, Matteo Cusmai <cusmaimatteo at gmail.com> wrote:
> > The facts should be immutable, so you should remove them and insert again
> > when they change.
> > If your facts change often, you have to consider to use fusion where your
> > facts will be events.
>
> This is a very restricted view of what facts and events should be and
> when to use what.
>
> Facts in WM don't have to be immutable - that's why there is update/modify.
>
> Frequent changes of facts don't necessitate Fusion.
>
> An event fact is almost always immutable, as a real-world event is.
>
> -W
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