Ok, Thanks for the info it is what I guessed, but I note the "currently" :)

It would be good, long term, to look to matching the Saxon capabilties here [1], part of which (xslt) are covered by this issue [2].

And related: I wonder sometimes about a "xmldb:" uri scheme and a custom resolver that could be passed to 3rd party validation and transform libraries to allow them to access BaseX db resources. I seem to remember a number of issues on the list that could be related to the saving temp copies of db resources to the file system as seems to occur currently.

No doubt this would be a big task, if it is even possible :)

/Andy

[1] http://www.saxonica.com/documentation9.5/sourcedocs/xml-catalogs.html

[2] https://github.com/BaseXdb/basex/issues/1405

On 25 September 2018 at 09:28, Christian Grün <christian.gruen@gmail.com> wrote:

Hi Andy,

Currently, XML catalog files will only be evaluated by the XML parser,
which will be called after the addressed resource has been located and
retrieved. In other words: The specified catalog file will be
evaluated indeed, but only for URIs that occur within the specified
XML document:

fetch:xml('file.xml', map {
'catfile': '/path/to/catalog.xml',
'dtd': true()
})

file.xml:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "bla/blu.dtd">
<xml/>

catalog.xml:
<catalog prefer="system" xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
<rewriteSystem systemIdStartString="bla/"
rewritePrefix="file:///path/to/dtd/" />
</catalog>

Hope this helps (a little),
Christian

On Tue, Sep 18, 2018 at 11:13 PM Andy Bunce <bunce.andy@gmail.com> wrote:
>
> Hi,
>
> Using a recent 9.1 Beta on windows.
> I create an XML catalog at c:\tmp\mycatalog.xml
>
> <catalog prefer="system" xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
> <uri
> name="http://nowhere.com/doc"
> uri="file:///c:/tmp/doc.xml" />
> </catalog>
>
> Then in the GUI
>
> fetch:xml("http://nowhere.com/doc",
> map{"catfile": "C:\tmp\mycatalog.xml"}
> )
>
> It goes to nowhere, I was hoping to get back c:/tmp/doc.xml
> Should this work?
>
> /Andy
>