Changes

This article is part of the [[XQuery|XQuery Portal]]. It summarizes the features of the [https://www.w3.org/TR/xpath-full-text-10/ W3C XQuery Full Text 1.0] Recommendation, and custom features of the implementation in BaseX.

for $text score $score in ("A", "A B", "A B C")[. let score $score := $text contains text "A"]

This simple approach has proven to consistently deliver good results, and in particular when little is known about the structure of the queried XML documents.

Please note that scores will only Scoring values can be computed if a parent expression requests themfurther processed to compute custom values:

let $terms := (: Computes and returns 'a scoring value. :', 'b')let score $score scores := <x>Hello Universe</x> ft:score($terms ! ('a b c' contains text "hello"{ . }))return avg($scorescores)</syntaxhighlight>

(: No Please note that scoring value propagation was removed with {{Mark|Version 9.5}}. The following expressions will be computed here. now yield {{Code|0}}:) <syntaxhighlight lang="xquery">let $result string := <x>Hello Universe</x> 'a b'return ft:score($string contains text 'a' and $string contains text "hello"'b'), let for $n score $score s in db:= open('factbook')//religions[text() contains text 'orthodox']order by $results descendingreturn $scores || ': ' || $n

Scores will be propagated Scoring is still supported within full-text expressions, by the {{CodeFunction|Full-Text|andft:search}} , and by simple predicate tests that can be rewritten to {{CodeFunction|Full-Text|orft:search}} expressions and in predicates. In the following query, all returned scores are equal:

let $text string := "A B C"'a b'let return ft:score ($s1 := $text string contains text "A" 'a' ftand "B C"'b'), let for $n score $s2 s in ft:= search('factbook', 'orthodox')order by $text contains text "A" ftand "B C"s descendinglet score return $s3 s || ':= ' || $text contains text "A" and $text contains text "B C"n, let score for $s4 := $text contains text "A" or $text contains text "B C"let n score $s5 s in db:= $open('factbook')//text()[. contains text "A"][. contains text "B C"'orthodox']order by $s descendingreturn ($s1, $s2, $s3, $s4, s || ': ' || $s5)n