net.sf.saxon.om
Class EmptyNamespaceDeclarationList

java.lang.Object
  net.sf.saxon.om.EmptyNamespaceDeclarationList

All Implemented Interfaces:

NamespaceDeclarations

public class EmptyNamespaceDeclarationList
extends Object
implements NamespaceDeclarations

A class representing an empty set of namespace declarations

Method Summary

static EmptyNamespaceDeclarationList	getInstance() Get the singular instance of this class
int	getNamespaceCode(int index) Get the n'th declaration in the list in the form of a namespace code.
int[]	getNamespaceCodes(int[] buffer) Get all the namespace codes, as an array.
int	getNumberOfNamespaces() Get the number of declarations (and undeclarations) in this list.
String	getPrefix(int index) Get the prefix of the n'th declaration (or undeclaration) in the list, counting from zero.
String	getURI(int index) Get the namespace URI of the n'th declaration (or undeclaration) in the list, counting from zero.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static EmptyNamespaceDeclarationList getInstance()

Get the singular instance of this class

Returns:

the singular instance of this class

getNamespaceCode

public int getNamespaceCode(int index)

Get the n'th declaration in the list in the form of a namespace code. Namespace codes can be translated into a prefix and URI by means of methods in the NamePool

Specified by:

getNamespaceCode in interface NamespaceDeclarations

Parameters:

index - the index identifying which declaration is required.

Returns:

the namespace code. This is an integer whose upper half indicates the prefix (0 represents the default namespace), and whose lower half indicates the URI (0 represents an undeclaration).

Throws:

IndexOutOfBoundsException - if the index is out of range.

See Also:

NamePool.getPrefixFromNamespaceCode(int), NamePool.getURIFromNamespaceCode(int)

getNamespaceCodes

public int[] getNamespaceCodes(int[] buffer)

Get all the namespace codes, as an array.

Specified by:

getNamespaceCodes in interface NamespaceDeclarations

Parameters:

buffer - a sacrificial array that the method is free to use to contain the result. May be null.

Returns:

an integer array containing namespace codes. The array may be filled completely with namespace codes, or it may be incompletely filled, in which case a -1 integer acts as a terminator.

getNumberOfNamespaces

public int getNumberOfNamespaces()

Get the number of declarations (and undeclarations) in this list.

Specified by:

getNumberOfNamespaces in interface NamespaceDeclarations

getPrefix

public String getPrefix(int index)

Get the prefix of the n'th declaration (or undeclaration) in the list, counting from zero.

Specified by:

getPrefix in interface NamespaceDeclarations

Parameters:

index - the index identifying which declaration is required.

Returns:

the namespace prefix. For a declaration or undeclaration of the default namespace, this is the zero-length string.

Throws:

IndexOutOfBoundsException - if the index is out of range.

getURI

public String getURI(int index)

Get the namespace URI of the n'th declaration (or undeclaration) in the list, counting from zero.

Specified by:

getURI in interface NamespaceDeclarations

Parameters:

index - the index identifying which declaration is required.

Returns:

the namespace URI. For a namespace undeclaration, this is the zero-length string.

Throws:

IndexOutOfBoundsException - if the index is out of range.