XdmMap Class Reference

#include <XdmMap.h>

Inheritance diagram for XdmMap:

Public Member Functions
	XdmMap ()
	Default constructor.
	XdmMap (const XdmMap &d)
	Copy constructor.
virtual	~XdmMap ()
	Destructor.
	XdmMap (int64_t obj)
	XdmMap (std::map< XdmAtomicValue *, XdmValue * > map)
int	mapSize ()
	Get the number of entries in the map.
XdmValue *	get (XdmAtomicValue *key)
XdmValue *	get (const char *key)
XdmValue *	get (int key)
XdmValue *	get (double key)
XdmValue *	get (long key)
XdmMap *	put (XdmAtomicValue *key, XdmValue *value)
	Create a new map containing an additional (key, value) pair.
XdmMap *	remove (XdmAtomicValue *key)
	Create a new map in which the entry for a given key has been removed.
std::set< XdmAtomicValue * >	keySet ()
	Get the keys present in the map in the form of an unordered std::set.
XdmAtomicValue **	keys ()
bool	isEmpty ()
	Returns true if this map contains no key-value mappings.
bool	containsKey (XdmAtomicValue *key)
std::list< XdmValue * >	valuesAsList ()
XdmValue **	values ()
bool	isFunction ()
	Determine whether the item is a function or some other type of item.
bool	isMap ()
	Determine whether the item is a map or some other type of item.
XDM_TYPE	getType ()
	Get the type of the object.
const char *	toString ()
Public Member Functions inherited from XdmFunctionItem
	XdmFunctionItem ()
	Default constructor for XdmFunctionItem.
	XdmFunctionItem (int64_t obj)
	XdmFunctionItem constructor created from a Java object - internal use.
	XdmFunctionItem (const XdmFunctionItem &d)
	Copy constructor.
virtual	~XdmFunctionItem ()
	Destructor.
const char *	getName ()
	Get the name of the function as EQName.
virtual int	getArity ()
	Get the arity of the function.
const char *	getStringValue ()
	Get the string value of the XdmArray item.
XdmValue **	createXdmValueArray (int len)
XdmValue *	call (SaxonProcessor *processor, XdmValue **arguments, int argument_length)
	Call the function.
bool	isAtomic ()
Public Member Functions inherited from XdmItem
	XdmItem ()
	XdmItem default constructor.
	XdmItem (int64_t)
	XdmItem (const XdmItem &item)
	Copy constructor.
virtual	~XdmItem ()
	Destructor.
virtual void	incrementRefCount ()
virtual void	decrementRefCount ()
virtual bool	isNode ()
virtual bool	isArray ()
virtual int64_t	getUnderlyingValue ()
virtual XdmItem *	getHead ()
XdmItem *	itemAt (int n)
int	size ()
Public Member Functions inherited from XdmValue
	XdmValue ()
	A default Constructor.
	XdmValue (const XdmValue &other)
	A copy constructor.
XdmValue *	addXdmValueWithType (const char *tStr, const char *val)
	Add an XdmItem to the sequence.
void	addXdmItem (XdmItem *val)
void	addXdmItemFromUnderlyingValue (XdmItem *val)
void	addUnderlyingValue (int64_t val)
	XdmValue (int64_t val, bool arrFlag)
	A Constructor for handling XdmArray - Internal user only.
	XdmValue (int64_t val)
	A Constructor.
virtual	~XdmValue ()
	Destructor.
void	releaseXdmValue ()
int	getRefCount ()
	Get the number of references on this XdmValue.
void	resetRelinquishedItems ()
void	incrementRefCountForRelinquishedValue (int i)

Additional Inherited Members
Static Public Member Functions inherited from XdmFunctionItem
static XdmFunctionItem *	getSystemFunction (SaxonProcessor *processor, const char *name, int arity)
	Get a system function.
Protected Member Functions inherited from XdmFunctionItem
XdmValue *	getXdmValueSubClass (int64_t value)
Protected Member Functions inherited from XdmValue
void	initialize ()
	initialize this XdmValue with default values
Protected Attributes inherited from XdmFunctionItem
char *	fname
Protected Attributes inherited from XdmItem
int64_t	value
const char *	stringValue
const char *	itemToString
Protected Attributes inherited from XdmValue
char *	valueType
XdmItem **	values
char *	relinquished_values
int	values_cap
int	xdmSize
int	refCount

Detailed Description

A map in the XDM data model. A map is a list of zero or more entries, each of which is a pair comprising a key (which is an atomic value) and a value (which is an arbitrary value). The map itself is an XDM item.

An XdmMap is immutable.

Since

11

Constructor & Destructor Documentation

XdmMap() [1/4]

XdmMap::XdmMap

(

)

Default constructor.

Create an empty XdmMap

XdmMap() [2/4]

XdmMap::XdmMap

(

const XdmMap &

d

)

Copy constructor.

Copy constructor for XdmMap

~XdmMap()

virtual XdmMap::~XdmMap ( )

inlinevirtual

Destructor.

Destructor for XdmMap

XdmMap() [3/4]

XdmMap::XdmMap

(

int64_t

obj

)

XdmMap constructor which is a wrapper object from the Java XdmMap object - internal use

Parameters

obj	- The internal Java object for the XdmMap is wrapped here in the C++ XdmMap

XdmMap() [4/4]

XdmMap::XdmMap

(

std::map< XdmAtomicValue *, XdmValue * >

map

)

Create an XdmMap supplying the entries in the form of a std::map, where the keys and values in the std::map are XDM values

Parameters

map	- a std::map whose entries are the (key, value) pairs

Member Function Documentation

containsKey()

bool XdmMap::containsKey

(

XdmAtomicValue *

key

)

Returns true if this map contains a mapping for the specified key. More formally, returns true if and only if this map contains a mapping for a key k such that (key==null ? k==null : key.equals(k)). (There can be at most one such mapping.)

Parameters

key	key whose presence in this map is to be tested

Returns

true if this map contains a mapping for the specified key

get() [1/5]

XdmValue * XdmMap::get

(

const char *

key

)

Returns the value to which the specified string-valued key is mapped, or NULL if this map contains no mapping for the key. This is a convenience method to save the trouble of converting the String to an XdmAtomicValue.

Parameters

key	the key whose associated value is to be returned. This is treated as an instance of xs:string (which will also match entries whose key is xs:untypedAtomic or xs:anyURI)

Returns

the value to which the specified key is mapped, or NULL if this map contains no mapping for the key

get() [2/5]

XdmValue * XdmMap::get

(

double

key

)

Returns the value to which the specified double-valued key is mapped, or NULL if this map contains no mapping for the key. This is a convenience method to save the trouble of converting the double to an XdmAtomicValue.

Parameters

key	the key whose associated value is to be returned. This is treated as an instance of xs:double (which will also match entries whose key belongs to another numeric type)

Returns

the value to which the specified key is mapped, or NULL if this map contains no mapping for the key

get() [3/5]

XdmValue * XdmMap::get

(

int

key

)

Returns the value to which the specified integer-valued key is mapped or NULL if this map contains no mapping for the key. This is a convenience method to save the trouble of converting the integer to an XdmAtomicValue.

Parameters

key	the key whose associated value is to be returned. This is treated as an instance of xs:integer (which will also match entries whose key belongs to another numeric type)

Returns

the value to which the specified key is mapped, or NULL if this map contains no mapping for the key

get() [4/5]

XdmValue * XdmMap::get

(

long

key

)

Returns the value to which the specified integer-valued key is mapped or NULL if this map contains no mapping for the key. This is a convenience method to save the trouble of converting the integer to an XdmAtomicValue.

Parameters

key	the key whose associated value is to be returned. This is treated as an instance of xs:integer (which will also match entries whose key belongs to another numeric type)

Returns

the value to which the specified key is mapped, or NULL if this map contains no mapping for the key

get() [5/5]

XdmValue * XdmMap::get

(

XdmAtomicValue *

key

)

Returns the value to which the specified key is mapped, or NULL if this map contains no mapping for the key.

Parameters

key	the key whose associated value is to be returned.

Returns

the value to which the specified key is mapped, or NULL if this map contains no mapping for the key

Remarks

if null is returned check getException method on the SaxonProcessor object for errors

getType()

XDM_TYPE XdmMap::getType ( )

inlinevirtual

Get the type of the object.

Reimplemented from XdmFunctionItem.

isEmpty()

bool XdmMap::isEmpty

(

)

Returns true if this map contains no key-value mappings.

Returns

true if this map contains no key-value mappings

isFunction()

bool XdmMap::isFunction ( )

inlinevirtual

Determine whether the item is a function or some other type of item.

Returns

true if the item is a Xdm function item, false if it is an atomic value or a function (including maps and arrays)

Reimplemented from XdmFunctionItem.

isMap()

bool XdmMap::isMap ( )

inlinevirtual

Determine whether the item is a map or some other type of item.

Returns

true if the item is a Xdm map item, false if it is some other type

Reimplemented from XdmItem.

keys()

XdmAtomicValue ** XdmMap::keys

(

)

Get the keys present in the map in the form of an unordered pointer array of XdmAtomicValue.

Returns

an unordered pointer array of the keys present in this map, in arbitrary order.

keySet()

std::set< XdmAtomicValue * > XdmMap::keySet

(

)

Get the keys present in the map in the form of an unordered std::set.

Returns

an unordered std::set of the keys present in this map, in arbitrary order.

mapSize()

int XdmMap::mapSize

(

)

Get the number of entries in the map.

Returns

the number of entries in the map. (Note that the size() method returns 1 (one), because an XDM map is an item.)

put()

XdmMap * XdmMap::put	(	XdmAtomicValue *	key,
		XdmValue *	value )

Create a new map containing an additional (key, value) pair.

If there is an existing entry with the same key, it is removed

Returns

a new map containing the additional entry. The original map is unchanged.

remove()

XdmMap * XdmMap::remove

(

XdmAtomicValue *

key

)

Create a new map in which the entry for a given key has been removed.

If there is no entry with the same key, the new map has the same content as the old (it may or may not be the same Java object)

Parameters

key	- The key to be removed given as an XdmAtomicValue

Returns

a map without the specified entry. The original map is unchanged.

toString()

const char * XdmMap::toString ( )

virtual

The toString() method returns a simple XML serialization of the node with defaulted serialization parameters.

In the case of an element node, the result will be a well-formed XML document serialized as defined in the W3C XSLT/XQuery serialization specification, using options method="xml", indent="yes", omit-xml-declaration="yes".

In the case of a document node, the result will be a well-formed XML document provided that the document node contains exactly one element child, and no text node children. In other cases it will be a well-formed external general parsed entity.

In the case of an attribute node, the output is a string in the form name="value". The name will use the original namespace prefix.

In the case of a namespace node, the output is a string in the form of a namespace declaration, that is xmlns="uri" or xmlns:pre="uri".

Other nodes, such as text nodes, comments, and processing instructions, are represented as they would appear in lexical XML. Note: this means that in the case of text nodes, special characters such as & and < are output in escaped form. To get the unescaped string value of a text node, use getStringValue() instead.

Returns

a simple XML serialization of the node. Under error conditions the method may return an error message which will always begin with the label "Error: ".

Reimplemented from XdmItem.

values()

XdmValue ** XdmMap::values

(

)

Returns a pointer array containing the values found in this map, that is, the value parts of the key-value pairs.

Returns

a pointer array containing the values found in this map. The result may contain duplicates, and the ordering of the collection is unpredictable.

valuesAsList()

std::list< XdmValue * > XdmMap::valuesAsList

(

)

Returns a std::list containing the values found in this map, that is, the value parts of the key-value pairs.

Returns

a std::list containing the values found in this map. The result may contain duplicates, and the ordering of the collection is unpredictable.

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The documentation for this class was generated from the following files:

• Saxon.C.API/XdmMap.h
• Saxon.C.API/XdmMap.cpp