Re: [xml] Streaming XPath restrictions in libxml2

[Daniel Veillard <veillard redhat com>]

On Wed, Oct 25, 2006 at 02:57:47PM +0530, Ravi Reddy wrote:
> 
> Hi,
> 
> I have a set of questions regarding the level of streaming XPath
> support. Please answer them.
> 
> 1). Is there any documentation on what subset of XPath 1.0 does libxml2
> support in streaming mode?

  No. Basically the one needed for XSD support.

> 2). Does libxml2 internally construct DOM for streamable XPath
> evaluation?

  no

> 3). Does libxml2 support only forward looking XPath and if so what
> subset?

  of course only forward. Again subset needed for XSD. See the XSD spec.
It was mostly designed as an internal feature, the driver was that spec.


Daniel

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