Question

I have the following objective. I want to find, which documents contain my data when executing any kind of Xquery or XPath. In other words, I need every document that is providing me the result data for a given query. I try to do this in eXist-db environment, but I suppose there should be something on Xquery level.

I found op:context-document() operator which seems to have functionality I want, yet, as an operator it is not available for me. fn:document-uri also does not do the trick, as its $arg must be a document node, otherwise it returns an empty sequence.

Do you have any idea in mind? All the assistance is highly appreciated.

Answer 1

fn:base-uri() may help; it returns the base URI property of a node:

for $d in doc('....')/your[query]
return base-uri($d)

You can also use it to filter your documents for specific types:

collection('/path/to/documents')[ends-with(base-uri(), '.xml')]