Function Library
The function library in XPath 2.0 is greatly extended from the function library in XPath 1.0. (Bold items are available in XPath 1.0)
The functions available include the following:
| Purpose | Example Functions |
|---|---|
| General string handling | lower-case, upper-case, substring, substring-before, substring-after, translate, starts-with, ends-with, contains, string-length, concat, normalize-space, normalize-unicode |
| Regular expressions | matches, replace, tokenize |
| Arithmetic | count, sum, avg, min, max, round, floor, ceiling, abs |
| Dates and times | adjust-dateTime-to-timezone, current-dateTime, day-from-dateTime, month-from-dateTime, days-from-duration, months-from-duration, etc. |
| Properties of nodes | name, node-name, local-name, namespace-uri, base-uri, nilled |
| Document handling | doc, doc-available, document-uri, collection, id, idref |
| URIs | encode-for-uri, escape-html-uri, iri-to-uri, resolve-uri |
| QNames | QName, namespace-uri-from-QName, prefix-from-QName, resolve-QName |
| Sequences | insert-before, remove, subsequence, index-of, distinct-values, reverse, unordered, empty, exists |
| Type checking | one-or-more, exactly-one, zero-or-one |
Read more about this topic: XPath 2.0
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