Re: Saxon on .NET: How to provide a XmlResolver for documents returned by collection()?

Hi Emanuel,

We have added the CollectionFinder feature to .NET which should be available in the next maintenance release, but was wondering if the current method: RegisterCollection(Uri collectionURI, IEnumerable content) could work for what you are doing?

See: https://www.saxonica.com/html/documentation/dotnetdoc/Saxon/Api/Processor.html#RegisterCollection(Uri,IEnumerable) <https://www.saxonica.com/html/documentation/dotnetdoc/Saxon/Api/Processor.html#RegisterCollection(Uri,IEnumerable)>

kind regards,

O'Neil

> On 26 Nov 2020, at 06:35, Emanuel Wlaschitz <[email protected]> wrote:
> 
> Thanks O'Neil!
>  
> I wonder how accurate this is though - it does have one, and it is called; but the more we read up about it we're more uncertain if thats even the place we should be looking at.
>  
> - Emanuel
>  
> From: O'Neil Delpratt <oneil-JkSD5nQpfvpWk0Htik3J/[email protected]> 
> Sent: Wednesday, November 25, 2020 23:55
> To: Mailing list for the SAXON XSLT and XQuery processor <[email protected]>
> Subject: Re: [saxon] Saxon on .NET: How to provide a XmlResolver for documents returned by collection()?
>  
> Hi Emmanuel,
>  
> Thanks for reporting this bug issue. The .NET product does not have its own CollectionFinder, which it should have had as in the Java product.
>  
> I have created the following bug issue to track progress:
>  
> https://saxonica.plan.io/issues/4839 <https://saxonica.plan.io/issues/4839>
>  
> kind regards,
>  
> O'Neil
> 
> 
> On 25 Nov 2020, at 13:00, Emanuel Wlaschitz <[email protected] <mailto:[email protected]>> wrote:
>  
> We've recently started to make more and more use of the collection() function and its ability to iterate files in a folder, which made a lot of custom C# code obsolete that we had to use in the past.
> While trying to replace (a lot more) code with (a lot less) XSLT calling collection(), we ran into the following error (which results in the transformation to fail): 
> 
> collection(): failed to parse XML file file:/D:/Test/sample1.xml: I/O error reported by XML parser processing file:/D:/Test/sample1.xml: Could not find file 'D:\Test\doctype.dtd'.
> 
> Obviously, that folder does not contain doctype.dtd (which is referenced by the DOCTYPE declaration of sample1.xml, as System ID); and for the most part we don't want (or need) it there.
> And for other purposes (which was mainly document() in the past) we've registered a XmlResolver as XsltTransformer.InputXmlResolver that redirects (and/or ignores) all requests for DTD or XSD files.
> 
> However, it appears the default CollectionFinder does not use XsltTransformer.InputXmlResolver; otherwise we wouldn't be seeing that error.
> We've also looked into implementing our own CollectionFinder (or rather: deriving from StandardCollectionFinder so we don't have to implement everything from scratch), but we couldn't find the appropriate place to plug in our code.
> The only thing that seemed remotely related was the context parameter in findCollection, but its uriResolver field was null.
> 
> And that's where our adventure ended, so we turned to the ML:
> 
> How can we get our custom XmlResolver into the default CollectionFinder?
> If that's not how it works, where would we plug our own code in a custom CollectionFinder?
> Also, after looking at "Writing your own Collection Finder": Is this even what we should be doing? The Collection Finder returns resources (as a sequence of URIs), not documents.
> 
> In case it matters, we've tried this on Saxon-HE 9.9.1.2N and 10.2N, but we plan on moving to 10.3N soon.
> 
> Thanks in advance,
> Emanuel
> 
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> -------------------------------
> O'Neil Delpratt
> Software Developer, Saxonica Limited 
> Email: oneil-JkSD5nQpfvpWk0Htik3J/[email protected] <mailto:oneil-JkSD5nQpfvpWk0Htik3J/[email protected]>
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-------------------------------
O'Neil Delpratt
Software Developer, Saxonica Limited 
Email: oneil-JkSD5nQpfvpWk0Htik3J/[email protected]
Twitter: https://twitter.com/ond1
Tel: +447859044188
Web: http://www.saxonica.com
Saxonica Community site: http://dev.saxonica.com
Bug tracking site: https://saxonica.plan.io/

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