Re: [xsl] fn:document() cost

["t vo toonvanopstal@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

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On Mon, Feb 12, 2018 at 12:31 AM, Michael Kay mike@xxxxxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> The only way you can get definitive answers to performance questions is by
> measuring it, but I would expect that combining several documents into one
> would increase your costs rather than decreasing them.
>
> Because multiple calls on document() with the same URI are required to
> return identical nodes (in the sense of the XPath "is" operator) XSLT
> processors don't have much choice but to cache the result in memory in case
> the same URI is used again.
>
> Michael Kay
> Saxonica
>
>
> On 11 Feb 2018, at 23:03, Jacopille, David djacopille@xxxxxxx <
> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> XSL experts,
>
>
>
> I have to pull from several xml files.  Would it be more efficient to
> combine all the xml into a single file firstb&or use fn:document() to
> specify the document context for each xpath statement.
>
>
>
> If Saxon's complier is savvy about only loading a document once in an XSL
> that specifies the same document multiple times this approach seems
> preferable to me.
>
>
>
> Thanks,
>
> Dave Jacopille
>
> Boston, MA
>
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