RequestParameterAction question

Hi all.

I am using RequestParameterAction to process parameters given in http request.

My http request looks something like this:

here is my pipeline:

<map:match pattern="test">

<map:act type="request">

<map:parameter name="parameters" value="true"/>

<map:generate src=""/>

<map:transform src="">

<map:parameter name="e-mail" value="{e-mail}"/>

</map:transform>

<map:serialize type="xml"/>

</map:act>

</map:match>

This way I pass the e-mail parameter to the stylesheet.

Now here is my question:

Can I preprocess the request parameter before passing it further?

E.g. in this case can I pass to the xsl instead of the whole e-mail parameter

something like: {substring-before('@',e-mail)} to pass only the username to xsl?

I know that in this case I don't really need it, because I can do this inside the xsl, but

I just give this as an example.

What I will realy need is for example to call another pipeline through the cocoon:// protocol

with part of the given request parameter that I want to extract.

Is it possible to do? Can somebody explain this to me?

Thank you very much for help.

Anna

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