org.apache.xml.utils

Class PrefixResolverDefault

Implemented Interfaces:
PrefixResolver
Known Direct Subclasses:
XPathNSResolverImpl

public class PrefixResolverDefault
extends Object
implements PrefixResolver

This class implements a generic PrefixResolver that can be used to perform prefix-to-namespace lookup for the XPath object.

Constructor Summary

PrefixResolverDefault(Node xpathExpressionContext)
Construct a PrefixResolverDefault object.

Method Summary

String
getBaseIdentifier()
Return the base identifier.
String
getNamespaceForPrefix(String prefix)
Given a namespace, get the corrisponding prefix.
String
getNamespaceForPrefix(String prefix, org.w3c.dom.Node namespaceContext)
Given a namespace, get the corrisponding prefix.
boolean
handlesNullPrefixes()

Constructor Details

PrefixResolverDefault

public PrefixResolverDefault(Node xpathExpressionContext)
Construct a PrefixResolverDefault object.
Parameters:
xpathExpressionContext - The context from which XPath expression prefixes will be resolved. Warning: This will not work correctly if xpathExpressionContext is an attribute node.

Method Details

getBaseIdentifier

public String getBaseIdentifier()
Return the base identifier.
Specified by:
getBaseIdentifier in interface PrefixResolver
Returns:
null

getNamespaceForPrefix

public String getNamespaceForPrefix(String prefix)
Given a namespace, get the corrisponding prefix. This assumes that the PrevixResolver hold's it's own namespace context, or is a namespace context itself.
Specified by:
getNamespaceForPrefix in interface PrefixResolver
Parameters:
prefix - Prefix to resolve.
Returns:
Namespace that prefix resolves to, or null if prefix is not bound.

getNamespaceForPrefix

public String getNamespaceForPrefix(String prefix,
                                    org.w3c.dom.Node namespaceContext)
Given a namespace, get the corrisponding prefix. 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.

handlesNullPrefixes

public boolean handlesNullPrefixes()
Specified by:
handlesNullPrefixes in interface PrefixResolver

Copyright B) 2004 Apache XML Project. All Rights Reserved.