org.htmlunit.cyberneko.xerces.util

Class NamespaceSupport

java.lang.Object

org.htmlunit.cyberneko.xerces.util.NamespaceSupport

All Implemented Interfaces:

NamespaceContext

public class NamespaceSupport
extends Object
implements NamespaceContext

Namespace support for XML document handlers. This class doesn't perform any error checking and assumes that all strings passed as arguments to methods are unique symbols.

Author:

Andy Clark, IBM

Field Summary

Fields inherited from interface org.htmlunit.cyberneko.xerces.xni.NamespaceContext

XML_URI, XMLNS_URI

Constructor Summary

Constructors

Constructor and Description
NamespaceSupport() Default constructor.

Method Summary

Modifier and Type	Method and Description
boolean	declarePrefix(String prefix, String uri) Declare a Namespace prefix.
String	getDeclaredPrefixAt(int index)
int	getDeclaredPrefixCount()
String	getURI(String prefix) Look up a prefix and get the currently-mapped Namespace URI.
void	popContext() Revert to the previous Namespace context.
void	pushContext() Start a new Namespace context.
void	reset() Reset this Namespace support object for reuse.

Methods inherited from class java.lang.Object

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

Constructor Detail

NamespaceSupport

public NamespaceSupport()

Default constructor.

Method Detail

reset

public void reset()

Description copied from interface: NamespaceContext

Reset this Namespace support object for reuse.

It is necessary to invoke this method before reusing the Namespace support object for a new session.

Note that implementations of this method need to ensure that the declaration of the prefixes "xmlns" and "xml" are available.

Specified by:

reset in interface NamespaceContext

See Also:

NamespaceContext.reset()

pushContext

public void pushContext()

Description copied from interface: NamespaceContext

Start a new Namespace context.

A new context should be pushed at the beginning of each XML element: the new context will automatically inherit the declarations of its parent context, but it will also keep track of which declarations were made within this context.

Specified by:

pushContext in interface NamespaceContext

See Also:

NamespaceContext.pushContext()

popContext

public void popContext()

Description copied from interface: NamespaceContext

Revert to the previous Namespace context.

The context should be popped at the end of each XML element. After popping the context, all Namespace prefix mappings that were previously in force are restored.

Users must not attempt to declare additional Namespace prefixes after popping a context, unless you push another context first.

Specified by:

popContext in interface NamespaceContext

See Also:

NamespaceContext.popContext()

declarePrefix

public boolean declarePrefix(String prefix,
                             String uri)

Description copied from interface: NamespaceContext

Declare a Namespace prefix.

This method declares a prefix in the current Namespace context; the prefix will remain in force until this context is popped, unless it is shadowed in a descendant context.

Note that to declare a default Namespace, use the empty string. The prefixes "xml" and "xmlns" can't be rebound.

Note that you must not declare a prefix after you've pushed and popped another Namespace.

Specified by:

declarePrefix in interface NamespaceContext

Parameters:

prefix - The prefix to declare, or null for the empty string.

uri - The Namespace URI to associate with the prefix.

Returns:

true if the prefix was legal, false otherwise

See Also:

NamespaceContext.declarePrefix(String, String)

getURI

public String getURI(String prefix)

Description copied from interface: NamespaceContext

Look up a prefix and get the currently-mapped Namespace URI.

This method looks up the prefix in the current context. If no mapping is found, this methods will continue lookup in the parent context(s). Use the empty string ("") for the default Namespace.

Specified by:

getURI in interface NamespaceContext

Parameters:

prefix - The prefix to look up.

Returns:

The associated Namespace URI, or null if the prefix is undeclared in this context.

See Also:

NamespaceContext.getURI(String)

getDeclaredPrefixCount

public int getDeclaredPrefixCount()

Specified by:

getDeclaredPrefixCount in interface NamespaceContext

Returns:

a count of locally declared prefixes, including the default prefix if bound.

See Also:

NamespaceContext.getDeclaredPrefixCount()

getDeclaredPrefixAt

public String getDeclaredPrefixAt(int index)

Specified by:

getDeclaredPrefixAt in interface NamespaceContext

Parameters:

index - the index pos

Returns:

the prefix at the specified index in the current context.

See Also:

NamespaceContext.getDeclaredPrefixAt(int)