[exprla-devel] About XPipes

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--- In xpl-dev@y..., cagle@o... wrote:
About XML Pipes

I recently wrote a case study for Wrox in which I started building an 
XSLT framework called XPipes. It is intended as a framework for 
developing web output quickly, although it incorporates a lot of what 
I've mentioned in previous posts -- the double pass XSLT processing, 
the conversion of simple tag/attribute elements into object requests, 
the definition of more sophisticated scripts. It's still not simple 
enough, principally because of namespace limitations, but it's 
getting there.

For example, the following is a working XPipes page:
<!-- sampleDoc.xml -->
<xp:document xmlns:xp="http://www.vbxml.com/xp">
    <param name="title">My Document</param>
    <param name="author">Kurt Cagle</param>
    <param name="email">cagle@o...</param>
    <param name="user"/>
    <xp:script name="string" namespace="http://www.vbxml.com/string"/>
    <xp:body onclick="alert('This is a test!')">
        <h1><out>$title</out></h1>
        <h2><link href="mailto:{$email}"><out>$author</out></link</h2>
        <var name="sample_text"><p>Hello, #user, this is a sample of 
your web page.</p></var>
        <out>string:replace_text($sample_text,'#user',$user)</out>
    </xp:body>
</xp:document>

If you then pass the following URL:

http://localhost/xpserver.asp?source=sampleDoc&title=A New 
Page&user=John Doe

then the XP page, when doubly parsed will generate as output:

<html>
    <head>
           <title>A New Page</title>
     </head>
    <body onclick="alert('This is a test!')">
        <h1>A New Page</h1>
        <h2><a href="mailto:cagle@o...">Kurt Cagle</h2>
        <p>Hello, John Doe, this is a sample of your web page.</p>
    </body>
</html>

It gets more complex than this -- I have tables, forms, and treeview 
controls that all work within this paradigm as well -- but you get 
the general idea.

-- Kurt Cagle
--- End forwarded message ---