This doesn't seem to be quite correct. - There's a fact "location" and another one "Location" - are they the same? - Query "look" is defined; query "look2" is referenced. - How is the fact L/location defined?
Regards Wolfgang On 18 April 2011 16:57, Mark Proctor <mproc...@codehaus.org> wrote: > Here is a more friendly example based around "Adventures in Proglog"'s > "Nani Search". This is just a sampling of queries and rules, which it > uses to provide an adventure like game environment. The "?" means to > pull results, rather than the normal reactive nature of patterns. > http://www.amzi.com/AdventureInProlog/ > > query niceFood( String thing, String location ) > location(thing, location) and > edible(thing) > end > > query connect( String x, String y ) > door(x, y;) > or > door(y, x;) > end > > query look(String place, List things, List exits) > things : List() from accumulate( Location(thing, place;) , > > collectList( thing ) ) > food : List() from accumulate( ?niceFood(thing, place;) , > collectList( > thing ) ) > exits : List() from accumulate( ?connect(place, exit;) , > collectList( > [place, exit] ) ) > end > > rule reactiveLook when > Here( place : location) > ?look2(place, things, exits) > then System.out.println( " You are in the " + place ); > System.out.println( " You can see " + things ); > System.out.println( " You can eat" + eat ); > System.out.println( " You can go to " + exits ); > end > > -----Output---- > You are in the kitchen > You can see [crackers, broccoli, apple] > You can eat[crackers, apple] > You can go to [[kitchen, dining room], [kitchen, cellar]] > > _______________________________________________ > rules-dev mailing list > rules-dev@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-dev >
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