org.jdom

Class Namespace

public final class Namespace extends Object

An XML namespace representation, as well as a factory for creating XML namespace objects. Namespaces are not Serializable, however objects that use namespaces have special logic to handle serialization manually. These classes call the getNamespace() method on deserialization to ensure there is one unique Namespace object for any unique prefix/uri pair.

Version: $Revision: 1.41 $, $Date: 2004/02/27 11:32:57 $

Author: Brett McLaughlin Elliotte Rusty Harold Jason Hunter Wesley Biggs

Field Summary
static Namespace	NO_NAMESPACE Define a `Namespace` for when not in a namespace
static Namespace	XML_NAMESPACE Define a `Namespace` for the standard xml prefix.

Method Summary
boolean	equals(Object ob) This tests for equality - Two `Namespaces` are equal if and only if their URIs are byte-for-byte equals.
static Namespace	getNamespace(String prefix, String uri) This will retrieve (if in existence) or create (if not) a `Namespace` for the supplied prefix and URI.
static Namespace	getNamespace(String uri) This will retrieve (if in existence) or create (if not) a `Namespace` for the supplied URI, and make it usable as a default namespace, as no prefix is supplied.
String	getPrefix() This returns the prefix mapped to this `Namespace`.
String	getURI() This returns the namespace URI for this `Namespace`.
int	hashCode() This returns a probably unique hash code for the `Namespace`.
String	toString() This returns a `String` representation of this `Namespace`, suitable for use in debugging.

Field Detail

NO_NAMESPACE

public static final Namespace NO_NAMESPACE

Define a Namespace for when not in a namespace

XML_NAMESPACE

public static final Namespace XML_NAMESPACE

Define a Namespace for the standard xml prefix.

Method Detail

equals

public boolean equals(Object ob)

This tests for equality - Two Namespaces are equal if and only if their URIs are byte-for-byte equals.

Parameters: ob Object to compare to this Namespace.

Returns: boolean - whether the supplied object is equal to this Namespace.

getNamespace

public static Namespace getNamespace(String prefix, String uri)

This will retrieve (if in existence) or create (if not) a Namespace for the supplied prefix and URI.

Parameters: prefix String prefix to map to Namespace. uri String URI of new Namespace.

Returns: Namespace - ready to use namespace.

Throws: IllegalNameException if the given prefix and uri make up an illegal namespace name.

getNamespace

public static Namespace getNamespace(String uri)

This will retrieve (if in existence) or create (if not) a Namespace for the supplied URI, and make it usable as a default namespace, as no prefix is supplied.

Parameters: uri String URI of new Namespace.

Returns: Namespace - ready to use namespace.

getPrefix

public String getPrefix()

This returns the prefix mapped to this Namespace.

Returns: String - prefix for this Namespace.

getURI

public String getURI()

This returns the namespace URI for this Namespace.

Returns: String - URI for this Namespace.

hashCode

public int hashCode()

This returns a probably unique hash code for the Namespace. If two namespaces have the same URI, they are equal and have the same hash code, even if they have different prefixes.

Returns: int - hash code for this Namespace.

toString

public String toString()

This returns a String representation of this Namespace, suitable for use in debugging.

Returns: String - information about this instance.