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Re: [Qexo-general] Include, Http Post
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From: |
Terje Pedersen |
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Subject: |
Re: [Qexo-general] Include, Http Post |
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Date: |
Sun, 20 Jul 2003 14:18:14 +0200 |
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User-agent: |
KMail/1.5.1 |
> Terje Pedersen wrote:
> > I N C L U D E
> > Is it possible to compile an xql program and use functions from this
> > class just like you can do with java, scm classes? I have tested using
> > functions written in a custom scm class from xql which worked on the
> > command line but for some reason I didn't get i working with tomcat ie.
> > from a servlet.
>
> Note sure what you're asking here. Yes, you can compile an xql program
> to a Java class, and yes you can call Java methods from XQuery. The
> problem is these features aren't really integrated and consistent yet.
> This is a high priority issue.
Some kind of module support is needed soon so that I could split my xql code
into several files.
> > H T T P P O S T
> > But what I really would
> > like to have is a function returning the posted form data as xml so that
> > I can treat it just like an xml document with the possibilty to lets say
> > join it with some other xml data.
Since I posted this mail I have learned a lot about xquery and Qexo so I
thought I should share some code generating xml from forms in Qexo itself (it
doesn't support mulitple values from checkbox or select multiple yet)
define function xml-request($names){
document {
element request {
for $n in $names
return element {$n} {request-parameter($n,())}
}
}
}
let $r := xml-request(("title","name","email","url","description"))/request
return
<div>
Name: {$r/name/text()}<br/>
Email: {$r/email/text()}
</div>
Sure the xml-request could also have one more parameter telling which root tag
to generate.
If we now also had request-parameter-names returning a sequence of all names
which were posted, you could write:
let $request := xml-request(request-parameter-names())
In HTTP.scm:
(define (request-parameter-names) :: <gnu.mapping.Values>
(invoke-static <gnu.kawa.servlet.ServletCallContext> 'getParameterNames))
In ServletCallContext.java:
import java.util.Enumeration;
public static Values getParameterNames ()
{
HttpServletRequest request = getRequest();
Enumeration e = request.getParameterNames();
Values vals = new Values();
while(e.hasMoreElements()){
vals.writeObject(e.nextElement());
}
return vals;
}
Example with a form:
let $names := request-parameter-names()
let $r := xml-request($names)/request
return
<html>
<head><title>Request test</title></head>
<body>
Text: {$r/text/text()}<br/>
Radio: {$r/yesno/text()}<br/>
Checkbox: {$r/checkbox/text()}<br/>
Select: {$r/select/text()}<br/>
Select mulitple: {$r/selectmultiple/text()}<br/>
<form method="post" action="#">
<b>Text</b><br/>
<input name="text" type="text" size="30"/><br/>
<b>Radio</b><br/>
<input type="radio" name="yesno"
value="yes"/>Yes<br/>
<input type="radio" name="yesno"
value="no"/>No<br/><br/>
<b>Checkbox</b><br/>
<input type="checkbox" name="checkbox"
value="Linux"/>Linux<br/>
<input type="checkbox" name="checkbox"
value="Windows"/>Windows<br/>
<b>Select</b><br/>
<select name="select">
<option key="A">A</option>
<option key="B">B</option>
</select><br/>
<b>Multiple Select</b><br/>
<select name="selectmultiple[" multiple="true">
<option key="House">House</option>
<option key="Boat">Boat</option>
<option key="Car">Car</option>
</select><br/>
<input name="submit" type="submit" value="Ok"/>
</form>
</body>
</html>
> That may be possible. But I don't know if it's compatible with XForms,
> which we may want to work towards.
Yes I would really like to have XForms support in Qexo.
Terje Pedersen - address@hidden