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 > > >
