Hi!
I'm relatively new to BaseX/XQuery and currently using a XML with the following format:
<?xml version="1.0" encoding="UTF-8" standalone="no"?> <modsCollection xmlns="http://www.loc.gov/mods/v3" xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-0.xsd "> <mods ID="ISI:000330282600027" version="3.0"> <titleInfo> <title>Minimum Relative Entropy for Quantum Estimation: Feasibility and General Solution</title> </titleInfo>
The file is called "quantuminformation.xml", inside the DB "ExemploBibtex"
I'm trying to extract the titles of all articles in the document, using the following query:
for $doc in collection('ExemploBibtex') where matches(document-uri($doc), 'quantuminformation.xml') return $doc/modsCollection/mods/titleInfo/title/text()
It doesn't matter if I use the text() or fn:string, the result is always empty.
What am I doing wrong?
Sorry for bothering and thank you for the attention.
Hi Ana,
Sorry for bothering and thank you for the attention.
You are welcome. Your need to declare the default namespace in order to get results:
declare namespace v3 ="http://www.loc.gov/mods/v3"; for $doc in collection('ExemploBibtex') where matches(document-uri($doc), 'quantuminformation.xml') return $doc/v3:modsCollection/v3:mods/v3:titleInfo/v3:title/text()
You can also use wildcards, and you can specify the filename in the argument of the collection() function:
for $doc in collection('ExemploBibtex/quantuminformation.xml') return $doc/*:modsCollection/*:mods/*:titleInfo/*:title/text()
Hope this helps, Christian
basex-talk@mailman.uni-konstanz.de
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Ana Victória Ladeira -
Christian Grün