[4suite-dev] Simple Xlink processing - is it possible with 4Suite?

[Sidney]

Take a look at the code for the XLink processor (Ft/Xml/XLink/Processor.py).
You will see that it's only method takes an input source.  See
Ft/Xml/InputSource.py.

So if your XML file is on a remote server or file system, you will need to
do something like this:

from Ft.Xml.InputSource import DefaultFactory
from Ft.Xml.XLink.Processor import Processor

sourceUri = 'file:///var/local/data/xml/myfile.xml'
# if file is on a remote HTTP server, use something like:
# sourceUri = 'http://www.myserver.com/data/myfile.xml'

iSrc = DefaultFactory.fromUri(sourceUri)
xlinkProc = Processor()

domDoc = xlinkProc.run(iSrc)

# domDoc is your document with your XLinks resolved and expanded accordingly
to the rules of XLinks.  Take a look at Ft/Xml/XLink/XLinkElements.py for
details.

#########

If you store your XML file somewhere different other then a file or a remote
HTTP server, you can also pass in a string.  For example:

sourceString = myCustomReadFileToString()  
iSrc = DefaultFactory.fromString(sourceString, 'urn:uuid:my_fake_uri')

###########

Again take a look at the respective library source code if you need a
solution more tailored to your needs.

Best of luck!

P.S. Your question would be better served sent to the 4suite general list.

-----Original Message-----
From: 4suite-dev-bounces at lists.fourthought.com
[mailto:4suite-dev-bounces at lists.fourthought.com] On Behalf Of
timjones at nhs.net
Sent: Monday, October 15, 2007 4:07 PM
To: 4suite-dev at lists.fourthought.com
Subject: [4suite-dev] Simple Xlink processing - is it possible with 4Suite?

Guys - a pointer please.

I have thousands of xml files with elements like:

<ElementLink xlink:type="simple" xlink:href="another.xml" xlink:title="the
title"/>

I need to drill through to the linked document with an xpath.

I can do this with an xquery in Stylus studio with an xquery like:

doc(//ElementLink/@xlink:href)//SAProperty/@SAPrpValue

Can't see anything at all in the 4-Suite documentation, although the
overviews say that xlink is supported.  

There seems to be something hopeful at
http://infinitesque.net/projects/4Suite/docs/modules/Ft.Xml.XLink.Processor.
html
No helpful documentation here however.

Can anyone help with a simple example or an alternative approach (in
python)? 
(pyexpat just falls over complaining about the xlink namespace)

Regards,

Tim


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