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package com.ctc.wstx.util;

import java.io.Writer;
import java.util.Iterator;

import javax.xml.namespace.NamespaceContext;
import javax.xml.stream.XMLStreamWriter;

import org.codehaus.stax2.ri.EmptyIterator;

/**
 * Dummy {@link NamespaceContext} (and {@link BaseNsContext})
 * implementation that is usually used in
 * non-namespace-aware mode.
 *

* Note: differs from Stax2 reference implementation's version * slightly, since it needs to support Woodstox specific extensions * for efficient namespace declaration serialization. */ public final class EmptyNamespaceContext extends BaseNsContext { final static EmptyNamespaceContext sInstance = new EmptyNamespaceContext(); private EmptyNamespaceContext() { } public static EmptyNamespaceContext getInstance() { return sInstance; } /* ///////////////////////////////////////////// // Extended API ///////////////////////////////////////////// */ public Iterator getNamespaces() { return EmptyIterator.getInstance(); } /** * Method called by the matching start element class to * output all namespace declarations active in current namespace * scope, if any. */ public void outputNamespaceDeclarations(Writer w) { ; // nothing to output } public void outputNamespaceDeclarations(XMLStreamWriter w) { ; // nothing to output } /* ///////////////////////////////////////////////// // Template methods sub-classes need to implement ///////////////////////////////////////////////// */ public String doGetNamespaceURI(String prefix) { return null; } public String doGetPrefix(String nsURI) { return null; } public Iterator doGetPrefixes(String nsURI) { return EmptyIterator.getInstance(); } }





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