On Thu, 11 Apr 2002 15:03:14 +0200, Mats Nor�n <[EMAIL PROTECTED]> wrote:
> Can I use recursion with the flow controller?
>
> For instance (incorrect syntax):
>
> function getSearchCriteria(a, b, c) {
> var URI = "showthreedropdowns_uri"
> Array result = {a, b, c}
> if (c == "") {
> sendPage(URI, a, b, c);
> result = getSearchCriteria(from_response_a,
> from_response_b,from_response_c)
> }
> return result;
> }
>
> getSearchCriteria("*", "", "");
>
> The idea is that the parameters are used in a pipeline which display a form
> with the dropdowns A, B, C.
> The option values are gathered from a database query with the parameters a,
> b, c.
> B depends on A, C depends on B.
> The initial values means that only A will be populated.
> When a selection is made in A a javascript posts the values back, B will be
> populated and C will remain empty.
> When a seletion is made in B, C will be populated and the innermost
> getSearchCriteria will return and then the second and then the first,
> hopefully containing three values for the criteria.
> Is this possible?
Yes, it is possible!
There's one change you'd need to do in the sample above is to put the
last line inside a function:
function showTree()
{
getSearchCriteria("*", "", "");
}
You would then add an entry in the sitemap to call this function:
<map:match pattern="...">
<map:call function="showTree"/>
</map:match>
This provides the entry point in your application.
Also to pass the business data to the URI, you'd need to put all of it
in a single object, so it can be accessed from the page. I think a
dictionary would be the best thing, as you can retrieve from it using
simple XPath expressions. So the above sendPage line would look like
sendPage(URI, {"a" : a, "b" : b, "c" : c});
In your XSP you'd access the values of a, b or c using:
<jpath:value-of select="a"/>
and so on.
Hope this helps.
Regards,
--
Ovidiu Predescu <[EMAIL PROTECTED]>
http://www.geocities.com/SiliconValley/Monitor/7464/ (GNU, Emacs, other stuff)
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