[rules-users] Dynamic JavaBeans

[Yuri de Wit]

I am not talking about assert, but modify. I have a dynamic fact
already asserted but now I need to perform N changes on N different
properties on the same object on the same consequence. Drools is going
to traverse the RETE network N times once for each time the
PropertiesListener is called (each setProperty called).

-- yuri

On 6/28/07, Mark Proctor <mproctor at codehaus.org> wrote:
> Why would doing the assert work at the end of the consequence be any
> quicker than doing it during the consequence?
>
> Mark
> Yuri de Wit wrote:
> > I noticed that changes performed on facts asserted dynamically causes
> > the fact to be modified right away and therefore triggering a RETE
> > network traversal and rule schedulings.
> >
> > For apps with a large number of facts this could be a significant
> > scalability problem. At least in my case, I would like to be able to
> > use dynamic facts and perform any number of updates and have those
> > updates commited to working memory only when the rule consequence is
> > completed.
> >
> > Looking at the code, it seems that it would not be a major effort to
> > collect the facts received by the ReteooWorkingMemory.propertyChange
> > and perform the actual modifyObject() only when the consequence
> > evaluation is actually completed.
> >
> > Does that makes sense? Or are there side effects I am not seeing? Is
> > this a problem that 4.0 already resolves?
> >
> > thanks in advance,
> >
> > -- yuri
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> >
>
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