so you mean
p1 : Person()
p2 : Person()
eval ( p1.equals(p2) )

(but presumably a shorthand form?)



On 4/8/06, Mark Proctor <[EMAIL PROTECTED]> wrote:
>
> We hadn't planned it, not promising  anything - but  I'll see how things
> pan out, may be we will get time.
>
> Mark
> Juergen wrote:
> > ad. Can object equality for assertion be customized?
> > Drools 3 still seems to use IdentityMap with System.identityHashCode().
> > Is it planned to be customizeable e.g. with equals() in 3.0?
> >
> > Michael Neale wrote:
> >> Short answer, not easily with Drools 2. But yes, with Drools 3.
> >>
> >> On 3/22/06, Juergen <[EMAIL PROTECTED]> wrote:
> >>
> >>> I recently looked into drools after experimenting with JESS and got a
> >>> few questions I could not look up in the drools documentation:
> >>>
> >>> - Exists a condition to test for non-existence of a matching
> >>> object/fact?
> >>> -- If yes, how to use it for own domain specific language conditions
> >>>
> >>> - How is sharing of conditions/nodes between productions implemented
> in
> >>> drools, one of the main benefits of the rete algorithm?
> >>> -- How is the equality of conditions defined for java smf? via textual
> >>> equality of the condition's java code?
> >>> -- How can equality of conditions for sharing be defined for domain
> >>> specific language conditions?
> >>> e.g. Conway's game of life (slightly modified dsl)
> >>> <rule name="kill the overcrowded">
> >>>        <conway:cellIsAlive cellName="cell"/>
> >>>        <conway:cellIsOverCrowded cellName="cell"/>
> >>>        <conway:killCell cellName="cell"/>
> >>> </rule>
> >>> <rule name="kill the lonely">
> >>>        <conway:cellIsAlive cellName="cell"/>
> >>>        <conway:cellIsLonely cellName="cell"/>
> >>>        <conway:killCell cellName="cell"/>
> >>> </rule>
> >>>
> >>> The conway:cellIsAlive condition could be shared between these two
> >>> productions. Would it?
> >>>
> >>> - When will the properties map be supported in drools implementation
> of
> >>> JSR 94 javax.rules API?
> >>> -- e.g. to be able to set conflict resolver of a rule base and other
> >>> settings that can be set via drools native API
> >>>
> >>> - Can object equality for assertion be customized?
> >>> -- Currently, org.drools.util.IdentityMap
> >>> (org.drools.reteoo.WorkingMemoryImpl) makes use of
> >>> System.identityHashCode(). There seems to be no way to customize that,
> >>> e.g. make drools use equals() instead, neither via native nor JSR 94
> >>> API.
> >>>
> >>> My apologies if some questions have already been answered in other
> >>> postings, I made no thorough search in this newsgroup yet.
> >>>
> >>> Thanks a lot, Juergen
> >
> >
> >
>
>

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