net.sf.saxon.om

Class NamespaceDeclarationsImpl

public class NamespaceDeclarationsImpl extends Object implements NamespaceDeclarations

An implementation of the NamespaceDeclarations interface, based on encapsulating an array of namespace codes.
Constructor Summary
NamespaceDeclarationsImpl()
NamespaceDeclarationsImpl(NamePool pool, int[] codes)
Construct a set of namespace declarations
Method Summary
intgetNamespaceCode(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.
intgetNumberOfNamespaces()
Get the number of declarations (and undeclarations) in this list.
StringgetPrefix(int index)
Get the prefix of the n'th declaration (or undeclaration) in the list, counting from zero.
StringgetURI(int index)
Get the namespace URI of the n'th declaration (or undeclaration) in the list, counting from zero.
voidsetNamePool(NamePool pool)
Set the name pool
voidsetNamespaceCodes(int[] codes)
Set the namespace codes.

Constructor Detail

NamespaceDeclarationsImpl

public NamespaceDeclarationsImpl()

NamespaceDeclarationsImpl

public NamespaceDeclarationsImpl(NamePool pool, int[] codes)
Construct a set of namespace declarations

Parameters: pool the name pool codes an integer array holding the namespace codes. These codes are allocated by the name pool, and can be used to look up a prefix and uri in the name pool. If the array contains the integer -1, this acts as a terminator for the list. This is the format returned by the method (int[]). A value of null is equivalent to supplying an empty array.

Method Detail

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

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 NamePool

getNamespaceCodes

public int[] getNamespaceCodes(int[] buffer)
Get all the namespace codes, as an array.

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.

getPrefix

public String getPrefix(int index)
Get the prefix of the n'th declaration (or undeclaration) in the list, counting from zero.

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.

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.

setNamePool

public void setNamePool(NamePool pool)
Set the name pool

setNamespaceCodes

public void setNamespaceCodes(int[] codes)
Set the namespace codes.

Parameters: codes an integer array holding the namespace codes. These codes are allocated by the name pool, and can be used to look up a prefix and uri in the name pool. If the array contains the integer -1, this acts as a terminator for the list. This is the format returned by the method (int[]). A value of null is equivalent to supplying an empty array.