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Re: Viewport and nested selected nodes

From: Alessandro Vernet <avernet@orbeon.com>
Date: Thu, 2 Nov 2006 07:25:07 -0800
Message-ID: <4828ceec0611020725h5cd5325du9f636094e3ce08f4@mail.gmail.com>
To: public-xml-processing-model-wg <public-xml-processing-model-wg@w3.org>

On 11/2/06, Richard Tobin <richard@inf.ed.ac.uk> wrote:
> > A) <p:viewport> and <p:for-each> are consistent. They are both
> > guaranteed to stream, so they can both be used on large documents.
>
> Match patterns aren't necessarily streamable.  You can put any
> expression in a predicate, e.g. a[@b = /x/y/z].  Unless the patterns
> are very restricted, implementations that want to stream are going to
> have to analyse them anyway to determine whether they are streamable.

Good point.

Alex
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Received on Thursday, 2 November 2006 15:25:18 GMT

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