On 18/04/2011 17:08, Wolfgang Laun wrote:
This doesn't seem to be quite correct.
* There's a fact "location" and another one "Location" - are they
the same?
that misses something, it was just a sample of queries. I had a location
query that maps to the Location fact.
"query location( String thing, String location ) \n" +
"
org.drools.integrationtests.BackwardChainingTest.Location( thing :
thing, location : location ) \n"+
"end\n" +
That shouldn't be needed after the changes sotty jsut did to allow
positional of Fact patterns too.
* Query "look" is defined; query "look2" is referenced.
I already updated the blog.
* How is the fact L/location defined?
There is a single knowlege store, that hasn't changed. it's no
different to the way that standard querries work.
Mark
Regards
Wolfgang
On 18 April 2011 16:57, Mark Proctor <mproc...@codehaus.org
<mailto: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]]
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