org.apache.xpath.jaxp

Class JAXPPrefixResolver

java.lang.Object

org.apache.xpath.jaxp.JAXPPrefixResolver

All Implemented Interfaces:

PrefixResolver

public class JAXPPrefixResolver
extends Object
implements PrefixResolver

This class implements a Default PrefixResolver which can be used to perform prefix-to-namespace lookup for the XPath object. This class delegates the resolution to the passed NamespaceContext

Field Summary

Fields

Modifier and Type	Field and Description
static String	S_XMLNAMESPACEURI The URI for the XML namespace.

Constructor Summary

Constructors

Constructor and Description
JAXPPrefixResolver(NamespaceContext nsContext)

Method Summary

Modifier and Type	Method and Description
String	getBaseIdentifier() Return the base identifier.
String	getNamespaceForPrefix(String prefix) Given a namespace, get the corrisponding prefix.
String	getNamespaceForPrefix(String prefix, Node namespaceContext) Given a prefix and a Context Node, get the corresponding namespace.
boolean	handlesNullPrefixes()

Methods inherited from class java.lang.Object

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

Field Detail

S_XMLNAMESPACEURI

public static final String S_XMLNAMESPACEURI

The URI for the XML namespace. (Duplicate of that found in org.apache.xpath.XPathContext).

See Also:

Constant Field Values

Constructor Detail

JAXPPrefixResolver

public JAXPPrefixResolver(NamespaceContext nsContext)

Method Detail

getNamespaceForPrefix

public String getNamespaceForPrefix(String prefix)

Description copied from interface: PrefixResolver

Given a namespace, get the corrisponding prefix. This assumes that the PrefixResolver holds its own namespace context, or is a namespace context itself.

Specified by:

getNamespaceForPrefix in interface PrefixResolver

Parameters:

prefix - The prefix to look up, which may be an empty string ("") for the default Namespace.

Returns:

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

getBaseIdentifier

public String getBaseIdentifier()

Return the base identifier.

Specified by:

getBaseIdentifier in interface PrefixResolver

Returns:

null

handlesNullPrefixes

public boolean handlesNullPrefixes()

Specified by:

handlesNullPrefixes in interface PrefixResolver

See Also:

PrefixResolver.handlesNullPrefixes()

getNamespaceForPrefix

public String getNamespaceForPrefix(String prefix,
                                    Node namespaceContext)

Given a prefix and a Context Node, get the corresponding namespace. Warning: This will not work correctly if namespaceContext is an attribute node.

Specified by:

getNamespaceForPrefix in interface PrefixResolver

Parameters:

prefix - Prefix to resolve.

namespaceContext - Node from which to start searching for a xmlns attribute that binds a prefix to a namespace.

Returns:

Namespace that prefix resolves to, or null if prefix is not bound.