Tamino XQuery User Guide - Software AG Documentation

Text Retrieval
for $a in input()/reviews/entry
return tf:createTextReference($a/review, "discussion")
Tamino will return these two object descriptions in its response:
The figure below shows you the text ranges for which reference descriptions have been created:
Highlighting Documents
Any location, for which a reference description exists, can be highlighted by using the function
tf:highlight. The query performing the highlighting is repeated here for your convenience:
for $a in input()/reviews/entry
let $ref := tf:createTextReference($a/review, "discussion")
where $ref
return tf:highlight($a, $ref, "REV_DISC")
As arguments, the function tf:highlight requires a node, a previously-generated reference description
and a marker string. Tamino uses processing instructions (PIs) to indicate the start and
end of the range to be highlighted so that a client application receiving the Tamino response document
can parse and process them. The marker string is used as the so-called PI target. You can
easily identify the highlighted text ranges in the response document for the above query:
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XQuery User Guide