Package net.sf.saxon.ma.map

This package implements maps, as introduced in XSLT 3.0 and XQuery 3.1: maps provide a dictionary-like data structure.

See: Description

Interface Summary

Interface	Description
MapItem	Interface supported by different implementations of an XDM map item

Class Summary

Class	Description
HashTrieMap	An immutable map.
KeyValuePair	A key and a corresponding value to be held in a Map.
MapCreate	This is a variant of the map:new() or map:merge() function which differs in that duplicate keys are considered an error.
MapFunctionSet	Function signatures (and pointers to implementations) of the functions defined in XPath 2.0
MapFunctionSet.MapContains	Implementation of the XPath 3.1 function map:contains(Map, key) => boolean
MapFunctionSet.MapEntry	Implementation of the extension function map:entry(key, value) => Map
MapFunctionSet.MapFind	Implementation of the XPath 3.1 function map:find(item()*, key) => array
MapFunctionSet.MapForEach	Implementation of the extension function map:for-each(Map, Function) => item()*
MapFunctionSet.MapGet	Implementation of the XPath 3.1 function map:get(Map, key) => value
MapFunctionSet.MapKeys	Implementation of the extension function map:keys(Map) => atomicValue*
MapFunctionSet.MapMerge	Implementation of the extension function map:merge() => Map From 9.8, map:merge is also used to implement map constructors in XPath and the xsl:map instruction in XSLT.
MapFunctionSet.MapPut	Implementation of the extension function map:put() => Map
MapFunctionSet.MapRemove	Implementation of the XPath 3.1 function map:remove(Map, key) => value
MapFunctionSet.MapSize	Implementation of the extension function map:size(map) => integer
MapType	An instance of this class represents a specific map item type, for example map(x:integer, element(employee))
MapUntypedContains	Implementation of an internal function map:untyped-contains(Map, key) => boolean, which is like map:contains except that if the supplied key is untyped atomic, it is converted to all the possible types present in the map and returns true if the key after conversion is present.
RangeKey	This class implements an XPath map item as a view of an XSLT key index.
TupleItemType	An instance of this class represents a specific tuple item type, for example tuple(x: xs:double, y: element(employee)).

Package net.sf.saxon.ma.map Description

This package implements maps, as introduced in XSLT 3.0 and XQuery 3.1: maps provide a dictionary-like data structure.

Maps are immutable, so that adding a new entry to a map creates a new map.

The entries in a map are (Key, Value) pairs. The key is always an atomic value; the value may be any XPath sequence.

There are functions (each supported by its own implementation class) to create a new map, to add an entry to a map, to get an entry from a map, and to list all the keys that are present in a map.

Michael H. Kay
Saxonica Limited
June 2015