http://www.w3.org/2005/xpath-functions

Description

Before using any of the functions below please remember to import the module namespace:

import module namespace  = "http://www.w3.org/2005/xpath-functions";

This module contains all the functions specified in the W3C XPath and XQuery Functions and Operators 3.0.

Module code

Here is the actual XQuery module code.

Authors

www.w3c.org

Version Declaration

xquery version "1.0" encoding "utf-8";

Function Summary

QName($paramURI as xs:string?, $paramQName as xs:string) as xs:QName external Constructs an xs:QName value given a namespace URI and a lexical QName.
abs($arg as numeric?) as numeric? external Returns the absolute value of $arg.
adjust-date-to-timezone($arg as xs:date?) as xs:date? external Adjusts an xs:date value to a specific timezone, or to no timezone at all; the result is the date in the target timezone that contains the starting instant of the supplied date.
adjust-date-to-timezone($arg as xs:date?, $timezone as xs:dayTimeDuration?) as xs:date? external Adjusts an xs:date value to a specific timezone, or to no timezone at all; the result is the date in the target timezone that contains the starting instant of the supplied date.
adjust-dateTime-to-timezone($arg as xs:dateTime?) as xs:dateTime external Adjusts an xs:dateTime value to a specific timezone, or to no timezone at all.
adjust-dateTime-to-timezone($arg as xs:dateTime?, $timezone as xs:dayTimeDuration?) as xs:dateTime external Adjusts an xs:dateTime value to a specific timezone, or to no timezone at all.
adjust-time-to-timezone($arg as xs:time?) as xs:time? external Adjusts an xs:time value to a specific timezone, or to no timezone at all.
adjust-time-to-timezone($arg as xs:time?, $timezone as xs:dayTimeDuration?) as xs:time? external Adjusts an xs:time value to a specific timezone, or to no timezone at all.
analyze-string($input as xs:string?, $pattern as xs:string) as element(fn:analyze-string-result) external Analyzes a string using a regular expression, returning an XML structure that identifies which parts of the input string matched or failed to match the regular expression, and in the case of matched substrings, which substrings matched each capturing group in the regular expression.
analyze-string($input as xs:string?, $pattern as xs:string, $flags as xs:string) as element(fn:analyze-string-result) external Analyzes a string using a regular expression, returning an XML structure that identifies which parts of the input string matched or failed to match the regular expression, and in the case of matched substrings, which substrings matched each capturing group in the regular expression.
available-environment-variables() as xs:string* external Returns a list of environment variable names that are suitable for passing to fn:environment-variable, as a (possibly empty) sequence of strings.
avg($arg as xs:anyAtomicType*) as xs:anyAtomicType? external Returns the average of the values in the input sequence $arg, that is, the sum of the values divided by the number of values.
boolean($arg as item()*) as xs:boolean external Computes the effective boolean value of the sequence $arg.
ceiling($arg as numeric?) as numeric? external Rounds $arg upwards to a whole number.
codepoint-equal($comparand1 as xs:string?, $comparand2 as xs:string?) as xs:boolean? external Returns true if two strings are equal, considered codepoint-by-codepoint.
codepoints-to-string($arg as xs:integer*) as xs:string external Creates an xs:string from a sequence of codepoints.
collection() as node()* external Returns a sequence of nodes representing a collection of documents indentified by a collection URI; or a default collection if no URI is supplied.
collection($arg as xs:string?) as node()* external Returns a sequence of nodes representing a collection of documents indentified by a collection URI; or a default collection if no URI is supplied.
compare($comparand1 as xs:string?, $comparand2 as xs:string?) as xs:integer? external Returns -1, 0, or 1, depending on whether $comparand1 collates before, equal to, or after $comparand2 according to the rules of a selected collation.
compare($comparand1 as xs:string?, $comparand2 as xs:string?, $collation as xs:string) as xs:integer? external Returns -1, 0, or 1, depending on whether $comparand1 collates before, equal to, or after $comparand2 according to the rules of a selected collation.
concat($arg1 as xs:anyAtomicType?, $arg2 as xs:anyAtomicType?) as xs:string external Returns the concatenation of the string values of the arguments.
contains($arg1 as xs:string?, $arg2 as xs:string?) as xs:boolean external Returns true if the string $arg1 contains $arg2 as a substring, taking collations into account.
contains($arg1 as xs:string?, $arg2 as xs:string?, $collation as xs:string) as xs:boolean external Returns true if the string $arg1 contains $arg2 as a substring, taking collations into account.
count($arg as item()*) as xs:integer external Returns the number of items in a sequence.
dateTime($arg1 as xs:date?, $arg2 as xs:time?) as xs:dateTime? external Returns an xs:dateTime value created by combining an xs:date and an xs:time.
day-from-date($arg as xs:date?) as xs:integer? external Returns the day component of an xs:date.
days-from-duration($arg as xs:duration?) as xs:integer? external Returns the number of days in a duration.
deep-equal($parameter1 as item(), $parameter2 as item()) as xs:boolean external This function assesses whether two sequences are deep-equal to each other.
deep-equal($parameter1 as item(), $parameter2 as item(), $collation as xs:string) as xs:boolean external This function assesses whether two sequences are deep-equal to each other.
distinct-values($arg as xs:anyAtomicType) as xs:anyAtomicType external Returns the values that appear in a sequence, with duplicates eliminated.
distinct-values($arg as xs:anyAtomicType, $collation as xs:string) as xs:anyAtomicType external Returns the values that appear in a sequence, with duplicates eliminated.
doc($uri as xs:string?) as document()? external Retrieves a document using a URI supplied as an xs:string, and returns the corresponding document node.
doc-available($uri as xs:string?) as xs:boolean external The function returns true if and only if the function call fn:doc($uri) would return a document node.
element-with-id($arg as xs:string) as element()* external Returns the sequence of element nodes that have an ID value matching the value of one or more of the IDREF values supplied in $arg.
element-with-id($arg as xs:string, $node as node()) as element()* external Returns the sequence of element nodes that have an ID value matching the value of one or more of the IDREF values supplied in $arg.
empty($arg as item()*) as xs:boolean external Returns true if the argument is the empty sequence.
ends-with($arg1 as xs:string?, $arg2 as xs:string?) as xs:boolean external Returns true if the string $arg1 contains $arg2 as a trailing substring, taking collations into account.
ends-with($arg1 as xs:string?, $arg2 as xs:string?, $collation as xs:string) as xs:boolean external Returns true if the string $arg1 contains $arg2 as a trailing substring, taking collations into account.
environment-variable($name as xs:string) as xs:string? external Returns the value of a system environment variable, if it exists.
error() as none external Calling the fn:error function raises an application-defined error.
error($code as xs:QName) as none external Calling the fn:error function raises an application-defined error.
error($code as xs:QName?, $description as xs:string) as none external Calling the fn:error function raises an application-defined error.
error($code as xs:QName?, $description as xs:string, $error-object as item()*) as none external Calling the fn:error function raises an application-defined error.
exactly-one($arg as item()*) as item() external Returns $arg if it contains exactly one item.
exists($arg as item()*) as xs:boolean external Returns true if the argument is a non-empty sequence.
false() as xs:boolean external Returns the xs:boolean value false.
filter($seq as item(), $f as function (item()) as xs:boolean) as item() external Returns those items from the sequence $seq for which the supplied function $f returns true.
floor($arg as numeric?) as numeric? external Rounds $arg downwards to a whole number.
fold-left($seq as item(), $zero as item(), $f as function (item(), item()) as item()) as item()* external Processes the supplied sequence from left to right, applying the supplied function repeatedly to each item in turn, together with an accumulated result value.
fold-right($seq as item(), $zero as item(), $f as function (item(), item()) as item()) as item()* external Processes the supplied sequence from right to left, applying the supplied function repeatedly to each item in turn, together with an accumulated result value.
format-date($value as xs:date?, $picture as xs:string, $language as xs:string?, $calendar as xs:string?, $place as xs:string?) as xs:string? external Returns a string containing an xs:date value formatted for display.
format-date($value as xs:date?, $picture as xs:string) as xs:string? external Returns a string containing an xs:date value formatted for display.
format-dateTime($value as xs:dateTime?, $picture as xs:string, $language as xs:string?, $calendar as xs:string?, $place as xs:string?) as xs:string? external Returns a string containing an xs:dateTime value formatted for display.
format-dateTime($value as xs:dateTime?, $picture as xs:string) as xs:string? external Returns a string containing an xs:dateTime value formatted for display.
format-integer($value as xs:integer?, $picture as xs:string) as xs:string external Formats an integer according to a given picture string, using the conventions of a given natural language if specified.
format-integer($value as xs:integer?, $picture as xs:string, $language as xs:string) as xs:string external Formats an integer according to a given picture string, using the conventions of a given natural language if specified.
format-number($value as numeric?, $picture as xs:string) as xs:string external Returns a string containing a number formatted according to a given picture string, taking account of decimal formats specified in the static context.
format-number($value as numeric?, $picture as xs:string, $decimal-format-name as xs:string) as xs:string external Returns a string containing a number formatted according to a given picture string, taking account of decimal formats specified in the static context.
format-time($value as xs:time?, $picture as xs:string, $language as xs:string?, $calendar as xs:string?, $place as xs:string?) as xs:string? external Returns a string containing an xs:time value formatted for display.
format-time($value as xs:time?, $picture as xs:string) as xs:string? external Returns a string containing an xs:time value formatted for display.
function-arity($func as function (*)) as xs:integer external Returns the arity of the function identified by a function item.
generate-id() as xs:string external This function returns a string that uniquely identifies a given node.
generate-id($arg as node()?) as xs:string external This function returns a string that uniquely identifies a given node.
head($arg as item()*) as item()? external Returns the first item in a sequence.
hours-from-duration($arg as xs:duration?) as xs:integer? external Returns the number of hours in a duration.
hours-from-time($arg as xs:time?) as xs:integer? external Returns the hours component of an xs:time.
id($arg as xs:string) as element()* external Returns the sequence of element nodes that have an ID value matching the value of one or more of the IDREF values supplied in $arg.
id($arg as xs:string, $node as node()) as element()* external Returns the sequence of element nodes that have an ID value matching the value of one or more of the IDREF values supplied in $arg.
idref($arg as xs:string) as node() external Returns the sequence of element or attribute nodes with an IDREF value matching the value of one or more of the ID values supplied in $arg.
idref($arg as xs:string, $node as node()) as node() external Returns the sequence of element or attribute nodes with an IDREF value matching the value of one or more of the ID values supplied in $arg.
in-scope-prefixes($element as element()) as xs:string external Returns the prefixes of the in-scope namespaces for an element node.
index-of($seq as xs:anyAtomicType, $search as xs:anyAtomicType) as xs:integer external Returns a sequence of positive integers giving the positions within the sequence $seq of items that are equal to $search.
index-of($seq as xs:anyAtomicType, $search as xs:anyAtomicType, $collation as xs:string) as xs:integer external Returns a sequence of positive integers giving the positions within the sequence $seq of items that are equal to $search.
insert-before($target as item(), $position as xs:integer, $inserts as item()) as item()* external Returns a sequence constructed by inserting an item or a sequence of items at a given position within an existing sequence.
local-name-from-QName($arg as xs:QName?) as xs:NCName? external Returns the local part of the supplied QName.
lower-case($arg as xs:string?) as xs:string external Converts a string to lower case.
for-each($seq as item(), $f as function (item()) as item()) as item()* external Applies the function item $f to every item from the sequence $seq in turn, returning the concatenation of the resulting sequences in order.
for-each-pair($seq1 as item(), $seq2 as item(), $f as function (item(), item()) as item()) as item() external Applies the function item $f to successive pairs of items taken one from $seq1 and one from $seq2, returning the concatenation of the resulting sequences in order.
matches($input as xs:string?, $pattern as xs:string) as xs:boolean external Returns true if the supplied string matches a given regular expression.
matches($input as xs:string?, $pattern as xs:string, $flags as xs:string) as xs:boolean external Returns true if the supplied string matches a given regular expression.
max($arg as xs:anyAtomicType*) as xs:anyAtomicType? external Returns a value that is equal to the highest value appearing in the input sequence.
max($arg as xs:anyAtomicType*, $collation as xs:string) as xs:anyAtomicType? external Returns a value that is equal to the highest value appearing in the input sequence.
min($arg as xs:anyAtomicType*) as xs:anyAtomicType? external Returns a value that is equal to the lowest value appearing in the input sequence.
min($arg as xs:anyAtomicType*, $collation as xs:string) as xs:anyAtomicType? external Returns a value that is equal to the lowest value appearing in the input sequence.
minutes-from-dateTime($arg as xs:dateTime?) as xs:integer? external Returns the minute component of an xs:dateTime.
minutes-from-duration($arg as xs:duration?) as xs:integer? external Returns the number of minutes in a duration.
minutes-from-time($arg as xs:time?) as xs:integer? external Returns the minutes component of an xs:time.
month-from-date($arg as xs:date?) as xs:integer? external Returns the month component of an xs:date.
months-from-duration($arg as xs:duration?) as xs:integer? external Returns the number of months in a duration.
namespace-uri-for-prefix($prefix as xs:string?, $element as element(*)) as xs:anyURI? external Returns the namespace URI of one of the in-scope namespaces for $element, identified by its namespace prefix.
namespace-uri-from-QName($arg as xs:QName?) as xs:anyURI? external Returns the namespace URI part of the supplied QName.
normalize-space() as xs:string external Returns the value of $arg with leading and trailing whitespace removed, and sequences of internal whitespace reduced to a single space character.
normalize-space($arg as xs:string?) as xs:string external Returns the value of $arg with leading and trailing whitespace removed, and sequences of internal whitespace reduced to a single space character.
normalize-unicode($arg as xs:string?) as xs:string external Returns the value of $arg after applying Unicode normalization.
normalize-unicode($arg as xs:string?, $normalizationForm as xs:string) as xs:string external Returns the value of $arg after applying Unicode normalization.
not($arg as item()*) as xs:boolean external Returns true if the effective boolean value of $arg is false, or false if it is true.
one-or-more($arg as item()*) as item()+ external Returns $arg if it contains one or more items.
parse-xml($arg as xs:string?) as document(element(*,xs:untyped)) external This function takes as input an XML document represented as a string, and returns the document node at the root of an XDM tree representing the parsed document.
parse-xml($arg as xs:string?, $baseURI as xs:string) as document(element(*,xs:untyped)) external This function takes as input an XML document represented as a string, and returns the document node at the root of an XDM tree representing the parsed document.
parse-xml-fragment($arg as xs:string?) as document(element(*,xs:untyped)) external This function takes as input an XML external entity represented as a string, and returns the document node at the root of an XDM tree representing the parsed document fragment.
prefix-from-QName($arg as xs:QName?) as xs:NCName? external Returns the prefix component of the supplied QName.
remove($target as item(), $position as xs:integer) as item() external Returns a new sequence containing all the items of $target except the item at position $position.
replace($input as xs:string?, $pattern as xs:string, $replacement as xs:string) as xs:string external Returns a string produced from the input string by replacing any substrings that match a given regular expression with a supplied replacement string.
replace($input as xs:string?, $pattern as xs:string, $replacement as xs:string, $flags as xs:string) as xs:string external Returns a string produced from the input string by replacing any substrings that match a given regular expression with a supplied replacement string.
resolve-QName($qname as xs:string?, $element as element(*)) as xs:QName? external Returns an xs:QName value (that is, an expanded-QName) by taking an xs:string that has the lexical form of an xs:QName (a string in the form "prefix:local-name" or "local-name") and resolving it using the in-scope namespaces for a given element.
reverse($arg as item()) as item() external Reverses the order of items in a sequence.
round($arg as numeric?) as numeric? external Rounds a value to a specified number of decimal places, rounding upwards if two such values are equally near.
round($arg as numeric?, $precision as xs:integer) as numeric? external Rounds a value to a specified number of decimal places, rounding upwards if two such values are equally near.
round-half-to-even($arg as numeric?) as numeric? external Rounds a value to a specified number of decimal places, rounding to make the last digit even if two such values are equally near.
round-half-to-even($arg as numeric?, $precision as xs:integer) as numeric? external Rounds a value to a specified number of decimal places, rounding to make the last digit even if two such values are equally near.
seconds-from-dateTime($arg as xs:dateTime?) as xs:decimal? external Returns the seconds component of an xs:dateTime.
seconds-from-duration($arg as xs:duration?) as xs:decimal? external Returns the number of seconds in a duration.
seconds-from-time($arg as xs:time?) as xs:decimal? external Returns the seconds component of an xs:time.
serialize($arg as item()*) as xs:string external This function serializes the supplied input sequence $arg as described in , returning the serialized representation of the sequence as a string.
serialize($arg as item()*, $params as element(output:serialization-parameters)?) as xs:string external This function serializes the supplied input sequence $arg as described in , returning the serialized representation of the sequence as a string.
starts-with($arg1 as xs:string?, $arg2 as xs:string?) as xs:boolean external Returns true if the string $arg1 contains $arg2 as a leading substring, taking collations into account.
starts-with($arg1 as xs:string?, $arg2 as xs:string?, $collation as xs:string) as xs:boolean external Returns true if the string $arg1 contains $arg2 as a leading substring, taking collations into account.
string-join($arg1 as xs:string*) as xs:string external Returns a string created by concatenating the items in a sequence, with a defined separator between adjacent items.
string-join($arg1 as xs:string*, $arg2 as xs:string) as xs:string external Returns a string created by concatenating the items in a sequence, with a defined separator between adjacent items.
string-length() as xs:integer external Returns the number of characters in a string.
string-length($arg as xs:string?) as xs:integer external Returns the number of characters in a string.
string-to-codepoints($arg as xs:string?) as xs:integer* external Returns the sequence of codepoints that constitute an xs:string value.
subsequence($sourceSeq as item(), $startingLoc as xs:double) as item() external Returns the contiguous sequence of items in the value of $sourceSeq beginning at the position indicated by the value of $startingLoc and continuing for the number of items indicated by the value of $length.
subsequence($sourceSeq as item(), $startingLoc as xs:double, $length as xs:double) as item() external Returns the contiguous sequence of items in the value of $sourceSeq beginning at the position indicated by the value of $startingLoc and continuing for the number of items indicated by the value of $length.
substring($sourceString as xs:string?, $start as xs:double) as xs:string external Returns the portion of the value of $sourceString beginning at the position indicated by the value of $start and continuing for the number of characters indicated by the value of $length.
substring($sourceString as xs:string?, $start as xs:double, $length as xs:double) as xs:string external Returns the portion of the value of $sourceString beginning at the position indicated by the value of $start and continuing for the number of characters indicated by the value of $length.
substring-after($arg1 as xs:string?, $arg2 as xs:string?) as xs:string external Returns the part of $arg1 that follows the first occurrence of $arg2, taking collations into account.
substring-after($arg1 as xs:string?, $arg2 as xs:string?, $collation as xs:string) as xs:string external Returns the part of $arg1 that follows the first occurrence of $arg2, taking collations into account.
substring-before($arg1 as xs:string?, $arg2 as xs:string?) as xs:string external Returns the part of $arg1 that precedes the first occurrence of $arg2, taking collations into account.
substring-before($arg1 as xs:string?, $arg2 as xs:string?, $collation as xs:string) as xs:string external Returns the part of $arg1 that precedes the first occurrence of $arg2, taking collations into account.
sum($arg as xs:anyAtomicType*) as xs:anyAtomicType external Returns a value obtained by adding together the values in $arg.
sum($arg as xs:anyAtomicType*, $zero as xs:anyAtomicType?) as xs:anyAtomicType? external Returns a value obtained by adding together the values in $arg.
tail($arg as item()) as item() external Returns all but the first item in a sequence.
timezone-from-date($arg as xs:date?) as xs:dayTimeDuration? external Returns the timezone component of an xs:date.
timezone-from-dateTime($arg as xs:dateTime?) as xs:dayTimeDuration? external Returns the timezone component of an xs:dateTime.
timezone-from-time($arg as xs:time?) as xs:dayTimeDuration? external Returns the timezone component of an xs:time.
tokenize($input as xs:string?, $pattern as xs:string) as xs:string* external Returns a sequence of strings constructed by splitting the input wherever a separator is found; the separator is any substring that matches a given regular expression.
tokenize($input as xs:string?, $pattern as xs:string, $flags as xs:string) as xs:string* external Returns a sequence of strings constructed by splitting the input wherever a separator is found; the separator is any substring that matches a given regular expression.
trace($value as item(), $label as xs:string) as item() external Provides an execution trace intended to be used in debugging queries.
translate($arg as xs:string?, $mapString as xs:string, $transString as xs:string) as xs:string external Returns the value of $arg modified by replacing or removing individual characters.
true() as xs:boolean external Returns the xs:boolean value true.
unordered($sourceSeq as item()) as item() external Returns the items of $sourceSeq in an order.
unparsed-text($href as xs:string?) as xs:string? external The fn:unparsed-text function reads an external resource (for example, a file) and returns a string representation of the resource.
unparsed-text($href as xs:string?, $encoding as xs:string) as xs:string? external The fn:unparsed-text function reads an external resource (for example, a file) and returns a string representation of the resource.
unparsed-text-available($href as xs:string?) as xs:boolean external Because errors in evaluating the fn:unparsed-text function are non-recoverable, these two functions are provided to allow an application to determine whether a call with particular arguments would succeed.
unparsed-text-available($href as xs:string?, $encoding as xs:string) as xs:boolean external Because errors in evaluating the fn:unparsed-text function are non-recoverable, these two functions are provided to allow an application to determine whether a call with particular arguments would succeed.
unparsed-text-lines($href as xs:string?) as xs:string* external The fn:unparsed-text-lines function reads an external resource (for example, a file) and returns its contents as a sequence of strings, one for each line of text in the string representation of the resource.
unparsed-text-lines($href as xs:string?, $encoding as xs:string) as xs:string* external The fn:unparsed-text-lines function reads an external resource (for example, a file) and returns its contents as a sequence of strings, one for each line of text in the string representation of the resource.
upper-case($arg as xs:string?) as xs:string external Converts a string to upper case.
uri-collection() as xs:anyURI* external Returns a sequence of xs:anyURI values representing the URIs in a resource collection.
uri-collection($arg as xs:string?) as xs:anyURI* external Returns a sequence of xs:anyURI values representing the URIs in a resource collection.
year-from-date($arg as xs:date?) as xs:integer? external Returns the year component of an xs:date.
years-from-duration($arg as xs:duration?) as xs:integer? external Returns the number of years in a duration.
zero-or-one($arg as item()*) as item()? external Returns $arg if it contains zero or one items.
codepoints-to-string($arg as xs:integer*) as xs:string external Creates an xs:string from a sequence of codepoints.
string-to-codepoints($arg as xs:string?) as xs:integer* external Returns the sequence of codepoints that constitute an xs:string value.
base-uri() as xs:anyURI? external Returns the base URI of a node.
base-uri($arg as node()?) as xs:anyURI? external Returns the base URI of a node.
current-date() as xs:date external Returns the current date.
current-dateTime() as xs:dateTimeStamp external Returns the current date and time (with timezone).
current-time() as xs:time external Returns the current time.
data() as xs:anyAtomicType* external Returns the result of atomizing a sequence, that is, replacing all nodes in the sequence by their typed values.
data($arg as item()) as xs:anyAtomicType external Returns the result of atomizing a sequence, that is, replacing all nodes in the sequence by their typed values.
default-collation() as xs:string external Returns the value of the default collation property from the static context.
document-uri() as xs:anyURI? external Returns the URI of a resource where a document can be found, if available.
document-uri($arg as node()?) as xs:anyURI? external Returns the URI of a resource where a document can be found, if available.
encode-for-uri($uri-part as xs:string?) as xs:string external Encodes reserved characters in a string that is intended to be used in the path segment of a URI.
escape-html-uri($uri as xs:string?) as xs:string external Escapes a URI in the same way that HTML user agents handle attribute values expected to contain URIs.
has-children() as xs:boolean external Returns true if the supplied node has one or more child nodes (of any kind).
has-children($node as node()?) as xs:boolean external Returns true if the supplied node has one or more child nodes (of any kind).
implicit-timezone() as xs:dayTimeDuration external Returns the value of the implicit timezone property from the dynamic context.
innermost($nodes as node()) as node() external Returns every node within the input sequence that is not an ancestor of another member of the input sequence; the nodes are returned in document order with duplicates eliminated.
iri-to-uri($iri as xs:string?) as xs:string external Converts a string containing an IRI into a URI according to the rules of .
lang($testlang as xs:string?) as xs:boolean external This function tests whether the language of $node, or the context item if the second argument is omitted, as specified by xml:lang attributes is the same as, or is a sublanguage of, the language specified by $testlang.
lang($testlang as xs:string?, $node as node()) as xs:boolean external This function tests whether the language of $node, or the context item if the second argument is omitted, as specified by xml:lang attributes is the same as, or is a sublanguage of, the language specified by $testlang.
last() as xs:integer external Returns the context size from the dynamic context.
local-name() as xs:string external Returns the local part of the name of $arg as an xs:string that is either the zero-length string, or has the lexical form of an xs:NCName.
local-name($arg as node()?) as xs:string external Returns the local part of the name of $arg as an xs:string that is either the zero-length string, or has the lexical form of an xs:NCName.
name() as xs:string external Returns the name of a node, as an xs:string that is either the zero-length string, or has the lexical form of an xs:QName.
name($arg as node()?) as xs:string external Returns the name of a node, as an xs:string that is either the zero-length string, or has the lexical form of an xs:QName.
namespace-uri() as xs:anyURI external Returns the namespace URI part of the name of $arg, as an xs:anyURI value.
namespace-uri($arg as node()?) as xs:anyURI external Returns the namespace URI part of the name of $arg, as an xs:anyURI value.
nilled() as xs:boolean external Returns true for an element that is nilled.
nilled($arg as node()?) as xs:boolean? external Returns true for an element that is nilled.
node-name() as xs:QName? external Returns the name of a node, as an xs:QName.
node-name($arg as node()?) as xs:QName? external Returns the name of a node, as an xs:QName.
number() as xs:double external Returns the value indicated by $arg or, if $arg is not specified, the context item after atomization, converted to an xs:double.
number($arg as xs:anyAtomicType?) as xs:double external Returns the value indicated by $arg or, if $arg is not specified, the context item after atomization, converted to an xs:double.
outermost($nodes as node()) as node() external Returns every node within the input sequence that has no ancestor that is itself a member of the input sequence; the nodes are returned in document order with duplicates eliminated.
position() as xs:integer external Returns the context position from the dynamic context.
resolve-uri($relative as xs:string?) as xs:anyURI? external Resolves a relative IRI reference against an absolute IRI.
resolve-uri($relative as xs:string?, $base as xs:string) as xs:anyURI? external Resolves a relative IRI reference against an absolute IRI.
root() as node() external Returns the root of the tree to which $arg belongs.
root($arg as node()?) as node()? external Returns the root of the tree to which $arg belongs.
static-base-uri() as xs:anyURI? external This function returns the value of the Static Base URI property from the static context.
string() as xs:string external Returns the value of $arg represented as an xs:string.
string($arg as item()?) as xs:string external Returns the value of $arg represented as an xs:string.
available-environment-variables() as xs:string* external Returns a list of environment variable names that are suitable for passing to fn:environment-variable, as a (possibly empty) sequence of strings.
environment-variable($arg as xs:string) as xs:string? external Returns the value of a system environment variable, if it exists.
unparsed-text($href as xs:string?) as xs:string? external The fn:unparsed-text function reads an external resource (for example, a file) and returns a string representation of the resource.
unparsed-text($href as xs:string?, $encoding as xs:string) as xs:string? external The fn:unparsed-text function reads an external resource (for example, a file) and returns a string representation of the resource.
unparsed-text-available($href as xs:string?) as xs:boolean external Because errors in evaluating the fn:unparsed-text function are non-recoverable, these two functions are provided to allow an application to determine whether a call with particular arguments would succeed.
unparsed-text-lines($href as xs:string?, $encoding as xs:string) as xs:string* external The fn:unparsed-text-lines function reads an external resource (for example, a file) and returns its contents as a sequence of strings, one for each line of text in the string representation of the resource.
unparsed-text-available($href as xs:string?, $encoding as xs:string) as xs:boolean external Because errors in evaluating the fn:unparsed-text function are non-recoverable, these two functions are provided to allow an application to determine whether a call with particular arguments would succeed.
uri-collection() as xs:anyURI* external Returns a sequence of xs:anyURI values representing the URIs in a resource collection.
uri-collection($arg as xs:string?) as xs:anyURI* external Returns a sequence of xs:anyURI values representing the URIs in a resource collection.

Functions

QName#2

declare function fn:QName(
    $paramURI as xs:string?,
    $paramQName as xs:string
) as xs:QName external

Constructs an xs:QName value given a namespace URI and a lexical QName.

This function is deterministic, context-independent, and focus-independent.

The namespace URI in the returned QName is taken from $paramURI. If $paramURI is the zero-length string or the empty sequence, it represents "no namespace".

The prefix (or absence of a prefix) in $paramQName is retained in the returned xs:QName value.

The local name in the result is taken from the local part of $paramQName.

A dynamic error is raised if $paramQName does not have the correct lexical form for an instance of xs:QName.

A dynamic error is raised if $paramURI is the zero-length string or the empty sequence, and the value of $paramQName contains a colon (:).

A dynamic error may be raised if $paramURI is not a valid URI (XML Namespaces 1.0) or IRI (XML Namespaces 1.1).

Returns

xs:QName

abs#1

declare function fn:abs(
    $arg as numeric?
) as numeric? external

Returns the absolute value of $arg.

This function is deterministic, context-independent, and focus-independent.

General rules: see .

If $arg is negative the function returns -$arg, otherwise it returns $arg.

If the type of $arg is one of the four numeric types xs:float, xs:double, xs:decimal or xs:integer the type of the result is the same as the type of $arg. If the type of $arg is a type derived from one of the numeric types, the result is an instance of the base numeric type.

For xs:float and xs:double arguments, if the argument is positive zero or negative zero, then positive zero is returned. If the argument is positive or negative infinity, positive infinity is returned.

For detailed type semantics, see [Formal Semantics].

The expression fn:abs(10.5) returns 10.5.

The expression fn:abs(-10.5) returns 10.5.

Returns

numeric?

adjust-date-to-timezone#1

declare function fn:adjust-date-to-timezone(
    $arg as xs:date?
) as xs:date? external

Adjusts an xs:date value to a specific timezone, or to no timezone at all; the result is the date in the target timezone that contains the starting instant of the supplied date.

The one-argument form of this function is deterministic, context-dependent, and focus-independent. It depends on implicit timezone.

The two-argument form of this function is deterministic, context-independent, and focus-independent.

If $timezone is not specified, then the effective value of $timezone is the value of the implicit timezone in the dynamic context.

If $arg is the empty sequence, then the function returns the empty sequence.

If $arg does not have a timezone component and $timezone is the empty sequence, then the result is the value of $arg.

If $arg does not have a timezone component and $timezone is not the empty sequence, then the result is $arg with $timezone as the timezone component.

If $arg has a timezone component and $timezone is the empty sequence, then the result is the local value of $arg without its timezone component.

If $arg has a timezone component and $timezone is not the empty sequence, then the function returns the value of the expression:

Let $dt be the value of fn:dateTime($arg, xs:time('00:00:00')).

Let $adt be the value of fn:adjust-dateTime-to-timezone($dt, $timezone)

The function returns the value of xs:date($adt)

A dynamic error is raised if $timezone is less than -PT14H or greater than PT14H or is not an integral number of minutes.

Returns

xs:date?

adjust-date-to-timezone#2

declare function fn:adjust-date-to-timezone(
    $arg as xs:date?,
    $timezone as xs:dayTimeDuration?
) as xs:date? external