simple (non-xml) pipeline parameters?

Is is possible to invoke a pipeline with a simple non-xml parameter, eg
a string identifier, or a boolean flag? Or must these always be
encapsulated in an xml document?




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As I understand, the inputs and outputs to
pipelines must always be xml "infosets",
documents basically.  I think the answer is
yes, always encapsulated in a document.

A processor can do other things besides
translate xml, such as the image processor
or the exec processor.

Cheers,
Hank
UCSB

----- Original Message -----
From: "Adrian Baker" <[hidden email]>
To: <[hidden email]>
Sent: Monday, December 18, 2006 7:51 PM
Subject: [ops-users] simple (non-xml) pipeline parameters?


> Is is possible to invoke a pipeline with a simple non-xml parameter, eg
> a string identifier, or a boolean flag? Or must these always be
> encapsulated in an xml document?
>
>
>


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Adrian,

As Hank pointed out, XPL only supports XML "documents" or rather
"infosets". So you must always encapsulate non-XML data within an XML
document to pass it to a pipeline.

Note that the XProc spec we are developing at W3C will have support for
parameters, which I think is what you are looking for.

-Erik

Adrian Baker wrote:
> Is is possible to invoke a pipeline with a simple non-xml parameter, eg
> a string identifier, or a boolean flag? Or must these always be
> encapsulated in an xml document?

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