AmazonSearch
Output Binding

    The OUTPUT BINDING for a website description consists of a WebL script that extracts information from the information source.  Here is the OUTPUT BINDING for AmazonSearch:

<OUTPUTBINDING>
    <SCRIPT> <![CDATA[
        var titles = Elem(P, "a") inside Elem(P,"dt");
        var dd = Elem(P,"dd");
        var Author, Price, temp;
        i = 0;

        while i < Size(titles) do
            temp = Pat(dd[i], `[$](\d+[.]\d+)`);
            if (Size(temp) == 0) then
                Price = nil;
            else
                Price = ToReal(temp[0][1]);
            end;
            temp = Pat(dd[i], `^[^/]+`);
            if (Size(temp) == 0) then
                Author = nil;
            else
                Author = Str_Trim(Text(temp[0]));
            end;
            if(Str_IndexOf("Read more", Author) != -1) then
                Author = Text(Pat(dd[i], `\w.*\n`)[0]);
            end;
 
            R = R + [
                    [.title = Text(titles[i]),
                        price = Price,
                        author = Author
                    .]];
                i = i+1;
            end; ]]>
    </SCRIPT>
</OUTPUTBINDING>

    The script in the OUTPUT BINDING only contains the code that extracts the information.  The portion of code that actually performs the query is dynamically generated based on user input.  For more information on how to write WebL Scripts, visit the WebL Homepage:

WebL Homepage

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