Node Functions
base-uri
base-uri() as xs:anyURI?
base-uri($arg as node()?) as xs:anyURI?
Returns the base URI of the context node or $arg. The base URI is retrieved from the context store.
default-language
default-language() as xs:language
Returns the default language. Returns "en".
doc
doc($uri as xs:string) as document-node()
Loads and parses an XML document from the given URI. Results are cached.
doc-available
doc-available($uri as xs:string) as xs:boolean
Returns true if a document is available at the given URI.
document-uri
document-uri() as xs:anyURI?
document-uri($arg as node()?) as xs:anyURI?
Returns the document URI of the context node or $arg. Returns the base URI for document nodes when available, or the empty sequence otherwise.
environment-variable
environment-variable($name as xs:string) as xs:string?
Returns the value of the system environment variable with the given name, or the empty sequence if no such variable exists.
environment-variable('HOME') → "/home/user"available-environment-variables
available-environment-variables() as xs:string*
Returns the names of all available system environment variables.
generate-id
generate-id() as xs:string
generate-id($arg as node()?) as xs:string
Returns a string that uniquely identifies the context node or $arg. Returns the empty string if the argument is the empty sequence. The generated ID is based on the internal node ID.
generate-id(.) → "d42"has-children
has-children() as xs:boolean
has-children($arg as node()?) as xs:boolean
Returns true if the context node or $arg has one or more child nodes.
in-scope-prefixes
in-scope-prefixes($element as element()) as xs:string*
Returns all namespace prefixes in scope for the given element.
innermost
innermost($nodes as node()*) as node()*
Returns every node in $nodes that is not an ancestor of another node in $nodes. The result is in document order.
lang
lang($testlang as xs:string) as xs:boolean
lang($testlang as xs:string, $node as node()) as xs:boolean
Returns true if the language of the context node (or $node) matches $testlang.
local-name
local-name() as xs:string
local-name($arg as node()?) as xs:string
Returns the local name of the context node or $arg.
local-name(<book/>) → "book"name
name() as xs:string
name($arg as node()?) as xs:string
Returns the qualified name (prefix:local) of the context node or $arg.
namespace-uri
namespace-uri() as xs:anyURI
namespace-uri($arg as node()?) as xs:anyURI
Returns the namespace URI of the context node or $arg.
namespace-uri-for-prefix
namespace-uri-for-prefix($prefix as xs:string, $element as element()) as xs:anyURI?
Returns the namespace URI bound to the given prefix on the element.
namespace-uri-from-QName
namespace-uri-from-QName($arg as xs:QName?) as xs:anyURI?
Returns the namespace URI from a QName.
nilled
nilled() as xs:boolean
nilled($arg as node()?) as xs:boolean
Returns true if the context node or $arg is nilled. Without schema awareness, this always returns false for element nodes and the empty sequence for non-element nodes.
node-name
node-name() as xs:QName?
node-name($arg as node()?) as xs:QName?
Returns the name of the context node or $arg as a QName. Returns the empty sequence for nodes that have no name (e.g. text nodes, comments).
outermost
outermost($nodes as node()*) as node()*
Returns every node in $nodes that is not a descendant of another node in $nodes. The result is in document order.
path
path() as xs:string?
path($arg as node()?) as xs:string?
Returns an XPath expression that uniquely identifies the context node or $arg within its document. The path uses the Q{uri}local notation for element names.
path(.) → "/Q{}root[1]/Q{}child[1]"local-name-from-QName
local-name-from-QName($arg as xs:QName?) as xs:NCName?
Returns the local name from a QName.
prefix-from-QName
prefix-from-QName($arg as xs:QName?) as xs:NCName?
Returns the prefix from a QName.
QName
QName($namespace as xs:string, $qualifiedName as xs:string) as xs:QName
Constructs a QName from a namespace URI and a qualified name string.
resolve-QName
resolve-QName($qname as xs:string, $element as element()) as xs:QName
Resolves a lexical QName against the in-scope namespaces of an element.
resolve-uri
resolve-uri($relative as xs:string) as xs:anyURI
resolve-uri($relative as xs:string, $base as xs:string) as xs:anyURI
Resolves a relative URI against a base URI.
root
root() as node()
root($arg as node()?) as node()?
Returns the root node of the tree containing the context node or $arg.
static-base-uri
static-base-uri() as xs:anyURI?
Returns the static base URI from the context, or the empty sequence if none is set.