Re: Pengine ask and success template

Torbjörn Lager <[email protected]> Sun, 9 Feb 2014 12:44:13 +0100
Newsgroups	gmane.comp.ai.prolog.swi
Message-ID	<CA+Y3JZg0ob6BU8AktdF+NnyAXXUmUy7p4XfVKM-qKMxRF9DnvQ@mail.gmail.com>
Hi Anne,

The template is modelled after the template (i.e. the first arg) in
the all-solutions predicatex. So, the answer to your question is,
e.g.:

            function handleCreate () {
                pengine.ask("q(X, Y)", {
                    template:'X-Y'
                });
            }

Then, you need to know the structure of the JSON being returned. There
is a little bit about that in the manual (mapping terms into JSON),
and another way to find out is

            function handleSuccess() {
                $('#out').html(JSON.stringify(this.data));
            }

Note that in this particular case, nothing is won by using a template.
You can instead do

            function handleCreate () {
                pengine.ask("q(X, Y)");
            }

Hope this helps!


Cheers,
Torbjörn

On Sat, Feb 8, 2014 at 11:21 PM, Anne Ogborn <[email protected]> wrote:
> I'm afraid your simple example is a tad too simple.
>
>
> Not entirely clear how I'm to transfer more than one piece of data.
>
> From the simple.html example, lets get the cartesian product of solutions to
> p and
> a new predicate r. Obviously in a real situation we're more likely to want
> somethign that
> has some correlation between the two, but this will suffice
>
>
>
>         <script type="text/x-prolog">
>
>   q(X,Y) :- p(X),r(Y).
>
>   p(a).
>   p(b).
>   p(c).
>   p(d).
>   p(e).
>   p(f).
>   p(g).
>
>   r(zip).
>   r(mort).
>
>         </script>
>         <script>
>             var pengine = new Pengine({
>                 oncreate: handleCreate,
>                 onsuccess: handleSuccess,
> onerror: handleSuccess
>             });
>             function handleCreate () {
>                 pengine.ask("q(X,_)", {     // <--  How can I get Y?
>                     template:'X'      // Whats this things format?
>                 });
>             }
>             function handleSuccess() {
>                 $('#out').html(this.data);
>             }
>         </script>
>     </head>
>     <body>
>         <div>?- q(X,Y).</div>
>         <div id="out"></div>
>
>         <button onclick="pengine.next()">Next</button>
>
>



-- 
Torbjörn Lager
Professor of General and Computational Linguistics
Department of Philosophy, Linguistics and Theory of Science
University of Gothenburg
Box 200, SE-405 30 Gothenburg, Sweden
Phone: +46317864962