Re: VelocityXsl

[Leon Messerschmidt <le...@opticode.co.za>]

Hi Adonis,

Please remember that Turbine does not do the $HelloLeon or #parse directives
or anything like that.  This is done by Velocity (another Jakarta Project).
Velocity is a templating engine that allows you to replace stuff like
$HelloLeon with object which you place into the context.

We Turbine users use Velocity so much that we created a Turbine Service to
easily do any Velocity Rendering.  The VelocityScreen and VelocityLayout
(which you set in your TurbineResources.properties) makes use of this
service, but you as a programmer can also use this service.

For example if you have a directory <webapp>/templates/xml and a file
<webapp>/templates/xml/leon.vm which looks something like this:

<text>$HelloLeon</text>

First you need to do the Velocity Part.  For this you need to create a
context and then render the Velocity template like so:

        // Remember to include the relevant packages

        // This line gives you a new Velocity context.  This is where you
add stuff
        // which will be replaced in the final template
            Context context = TurbineVelocity.getContext(data);
        // Now you need to add parameters needed for the template to the
context.
        // You can add any object here.  For more information about
templates
        // see the Velocity site.
            context.put ("HelloLeon","This is a hello message for Leon");
        // Now you execute the template with the context
            String content = TurbineVelocity.handleRequest
(context,"xml/leon.vm");

After this step the content variable should hold a string with the rendered
template.  This string you can feed through an XSL transformation.
Something like this

String result = TurbineXSLT.transform ("myxslfile",content);

The result variable should now contain the rendered and transformed content
of the whole process.  Hope this helps.

~ Leon

> Hi Leon,
>
> sorry that I take so much of your time!
>
> Perhaps I should say, that I work with turbine (does it help you ;-).
> A Javafile transform a xml file with a xsl file, which includs
> velocitystuff, to a html file(I hope you won't get to confused).
> I store these html file in a stringvariable $HelloLeon.
> These $HelloLeon is called in a .vm file. I hoped turbine would render
> the content of $HelloLeon automaticly, but it didn't.
> So I tried to render it with #parse($HelloLeon) but all I got was an
> empty screen (no error, nothing!)
> What can I do?
>
> Thank you very, very much
>
> Adonis
>


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