org.apache.xpath.jaxp
Class JAXPPrefixResolver

java.lang.Object
  org.apache.xpath.jaxp.JAXPPrefixResolver

All Implemented Interfaces:

PrefixResolver

public class JAXPPrefixResolver
extends java.lang.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

private javax.xml.namespace.NamespaceContext	namespaceContext
static java.lang.String	S_XMLNAMESPACEURI The URI for the XML namespace.

Constructor Summary

JAXPPrefixResolver(javax.xml.namespace.NamespaceContext nsContext)

Method Summary

java.lang.String	getBaseIdentifier() Return the base identifier.
java.lang.String	getNamespaceForPrefix(java.lang.String prefix) Given a namespace, get the corrisponding prefix.
java.lang.String	getNamespaceForPrefix(java.lang.String prefix, org.w3c.dom.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

namespaceContext

private javax.xml.namespace.NamespaceContext namespaceContext

S_XMLNAMESPACEURI

public static final java.lang.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(javax.xml.namespace.NamespaceContext nsContext)

Method Detail

getNamespaceForPrefix

public java.lang.String getNamespaceForPrefix(java.lang.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 java.lang.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 java.lang.String getNamespaceForPrefix(java.lang.String prefix,
                                              org.w3c.dom.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.