jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java@e530533619ec (annotated)

src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java@e530533619ec (annotated)

src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java

Thu, 12 Oct 2017 19:44:07 +0800

author: aoqi
date: Thu, 12 Oct 2017 19:44:07 +0800
changeset 760: e530533619ec
parent 0: 373ffda63c9a
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 // NamespaceSupport.java - generic Namespace support for SAX.
 // http://www.saxproject.org
 // Written by David Megginson
 // This class is in the Public Domain.  NO WARRANTY!
 package com.sun.xml.internal.txw2;
 import java.util.EmptyStackException;
 import java.util.Enumeration;
 import java.util.Hashtable;
 import java.util.Vector;
 /**
  * Encapsulate Namespace logic for use by applications using SAX,
  * or internally by SAX drivers.
  *
  * <blockquote>
  * <em>This module, both source code and documentation, is in the
  * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
  * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
  * for further information.
  * </blockquote>
  *
  * <p>This class encapsulates the logic of Namespace processing: it
  * tracks the declarations currently in force for each context and
  * automatically processes qualified XML names into their Namespace
  * parts; it can also be used in reverse for generating XML qnames
  * from Namespaces.</p>
  *
  * <p>Namespace support objects are reusable, but the reset method
  * must be invoked between each session.</p>
  *
  * <p>Here is a simple session:</p>
  *
  * <pre>
  * String parts[] = new String[3];
  * NamespaceSupport support = new NamespaceSupport();
  *
  * support.pushContext();
  * support.declarePrefix("", "http://www.w3.org/1999/xhtml");
  * support.declarePrefix("dc", "http://www.purl.org/dc#");
  *
  * parts = support.processName("p", parts, false);
  * System.out.println("Namespace URI: " + parts[0]);
  * System.out.println("Local name: " + parts[1]);
  * System.out.println("Raw name: " + parts[2]);
  *
  * parts = support.processName("dc:title", parts, false);
  * System.out.println("Namespace URI: " + parts[0]);
  * System.out.println("Local name: " + parts[1]);
  * System.out.println("Raw name: " + parts[2]);
  *
  * support.popContext();
  * </pre>
  *
  * <p>Note that this class is optimized for the use case where most
  * elements do not contain Namespace declarations: if the same
  * prefix/URI mapping is repeated for each context (for example), this
  * class will be somewhat less efficient.</p>
  *
  * <p>Although SAX drivers (parsers) may choose to use this class to
  * implement namespace handling, they are not required to do so.
  * Applications must track namespace information themselves if they
  * want to use namespace information.
  *
  * @since SAX 2.0
  * @author David Megginson
  * @version 2.0.1 (sax2r2)
  */
 final class NamespaceSupport
 {
     ////////////////////////////////////////////////////////////////////
     // Constants.
     ////////////////////////////////////////////////////////////////////
     /**
      * The XML Namespace URI as a constant.
      * The value is <code>http://www.w3.org/XML/1998/namespace</code>
      * as defined in the "Namespaces in XML" * recommendation.
      *
      * <p>This is the Namespace URI that is automatically mapped
      * to the "xml" prefix.</p>
      */
     public final static String XMLNS =
         "http://www.w3.org/XML/1998/namespace";
     /**
      * The namespace declaration URI as a constant.
      * The value is <code>http://www.w3.org/xmlns/2000/</code>, as defined
      * in a backwards-incompatible erratum to the "Namespaces in XML"
      * recommendation.  Because that erratum postdated SAX2, SAX2 defaults
      * to the original recommendation, and does not normally use this URI.
      *
      *
      * <p>This is the Namespace URI that is optionally applied to
      * <em>xmlns</em> and <em>xmlns:*</em> attributes, which are used to
      * declare namespaces.  </p>
      *
      * @since SAX 2.1alpha
      * @see #setNamespaceDeclUris
      * @see #isNamespaceDeclUris
      */
     public final static String NSDECL =
         "http://www.w3.org/xmlns/2000/";
     /**
      * An empty enumeration.
      */
     private final static Enumeration EMPTY_ENUMERATION =
         new Vector().elements();
     ////////////////////////////////////////////////////////////////////
     // Constructor.
     ////////////////////////////////////////////////////////////////////
     /**
      * Create a new Namespace support object.
      */
     public NamespaceSupport ()
     {
         reset();
     }
     ////////////////////////////////////////////////////////////////////
     // Context management.
     ////////////////////////////////////////////////////////////////////
     /**
      * Reset this Namespace support object for reuse.
      *
      * <p>It is necessary to invoke this method before reusing the
      * Namespace support object for a new session.  If namespace
      * declaration URIs are to be supported, that flag must also
      * be set to a non-default value.
      * </p>
      *
      * @see #setNamespaceDeclUris
      */
     public void reset ()
     {
         contexts = new Context[32];
         namespaceDeclUris = false;
         contextPos = 0;
         contexts[contextPos] = currentContext = new Context();
         currentContext.declarePrefix("xml", XMLNS);
     }
     /**
      * Start a new Namespace context.
      * 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.
      *
      * <p>Event callback code should start a new context once per element.
      * This means being ready to call this in either of two places.
      * For elements that don't include namespace declarations, the
      * <em>ContentHandler.startElement()</em> callback is the right place.
      * For elements with such a declaration, it'd done in the first
      * <em>ContentHandler.startPrefixMapping()</em> callback.
      * A boolean flag can be used to
      * track whether a context has been started yet.  When either of
      * those methods is called, it checks the flag to see if a new context
      * needs to be started.  If so, it starts the context and sets the
      * flag.  After <em>ContentHandler.startElement()</em>
      * does that, it always clears the flag.
      *
      * <p>Normally, SAX drivers would push a new context at the beginning
      * of each XML element.  Then they perform a first pass over the
      * attributes to process all namespace declarations, making
      * <em>ContentHandler.startPrefixMapping()</em> callbacks.
      * Then a second pass is made, to determine the namespace-qualified
      * names for all attributes and for the element name.
      * Finally all the information for the
      * <em>ContentHandler.startElement()</em> callback is available,
      * so it can then be made.
      *
      * <p>The Namespace support object always starts with a base context
      * already in force: in this context, only the "xml" prefix is
      * declared.</p>
      *
      * @see org.xml.sax.ContentHandler
      * @see #popContext
      */
     public void pushContext ()
     {
         int max = contexts.length;
         contextPos++;
                                 // Extend the array if necessary
         if (contextPos >= max) {
             Context newContexts[] = new Context[max*2];
             System.arraycopy(contexts, 0, newContexts, 0, max);
             max *= 2;
             contexts = newContexts;
         }
                                 // Allocate the context if necessary.
         currentContext = contexts[contextPos];
         if (currentContext == null) {
             contexts[contextPos] = currentContext = new Context();
         }
                                 // Set the parent, if any.
         if (contextPos > 0) {
             currentContext.setParent(contexts[contextPos - 1]);
         }
     }
     /**
      * Revert to the previous Namespace context.
      *
      * <p>Normally, you should pop the context at the end of each
      * XML element.  After popping the context, all Namespace prefix
      * mappings that were previously in force are restored.</p>
      *
      * <p>You must not attempt to declare additional Namespace
      * prefixes after popping a context, unless you push another
      * context first.</p>
      *
      * @see #pushContext
      */
     public void popContext ()
     {
         contexts[contextPos].clear();
         contextPos--;
         if (contextPos < 0) {
             throw new EmptyStackException();
         }
         currentContext = contexts[contextPos];
     }
     ////////////////////////////////////////////////////////////////////
     // Operations within a context.
     ////////////////////////////////////////////////////////////////////
     /**
      * Declare a Namespace prefix.  All prefixes must be declared
      * before they are referenced.  For example, a SAX driver (parser)
      * would scan an element's attributes
      * in two passes:  first for namespace declarations,
      * then a second pass using {@link #processName processName()} to
      * interpret prefixes against (potentially redefined) prefixes.
      *
      * <p>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.</p>
      *
      * <p>To declare the default element Namespace, use the empty string as
      * the prefix.</p>
      *
      * <p>Note that there is an asymmetry in this library: {@link
      * #getPrefix getPrefix} will not return the "" prefix,
      * even if you have declared a default element namespace.
      * To check for a default namespace,
      * you have to look it up explicitly using {@link #getURI getURI}.
      * This asymmetry exists to make it easier to look up prefixes
      * for attribute names, where the default prefix is not allowed.</p>
      *
      * @param prefix The prefix to declare, or the empty string to
      *  indicate the default element namespace.  This may never have
      *  the value "xml" or "xmlns".
      * @param uri The Namespace URI to associate with the prefix.
      * @return true if the prefix was legal, false otherwise
      *
      * @see #processName
      * @see #getURI
      * @see #getPrefix
      */
     public boolean declarePrefix (String prefix, String uri)
     {
         if (prefix.equals("xml") || prefix.equals("xmlns")) {
             return false;
         } else {
             currentContext.declarePrefix(prefix, uri);
             return true;
         }
     }
     /**
      * Process a raw XML qualified name, after all declarations in the
      * current context have been handled by {@link #declarePrefix
      * declarePrefix()}.
      *
      * <p>This method processes a raw XML qualified name in the
      * current context by removing the prefix and looking it up among
      * the prefixes currently declared.  The return value will be the
      * array supplied by the caller, filled in as follows:</p>
      *
      * <dl>
      * <dt>parts[0]</dt>
      * <dd>The Namespace URI, or an empty string if none is
      *  in use.</dd>
      * <dt>parts[1]</dt>
      * <dd>The local name (without prefix).</dd>
      * <dt>parts[2]</dt>
      * <dd>The original raw name.</dd>
      * </dl>
      *
      * <p>All of the strings in the array will be internalized.  If
      * the raw name has a prefix that has not been declared, then
      * the return value will be null.</p>
      *
      * <p>Note that attribute names are processed differently than
      * element names: an unprefixed element name will receive the
      * default Namespace (if any), while an unprefixed attribute name
      * will not.</p>
      *
      * @param qName The XML qualified name to be processed.
      * @param parts An array supplied by the caller, capable of
      *        holding at least three members.
      * @param isAttribute A flag indicating whether this is an
      *        attribute name (true) or an element name (false).
      * @return The supplied array holding three internalized strings
      *        representing the Namespace URI (or empty string), the
      *        local name, and the XML qualified name; or null if there
      *        is an undeclared prefix.
      * @see #declarePrefix
      * @see java.lang.String#intern */
     public String [] processName (String qName, String parts[],
                                   boolean isAttribute)
     {
         String myParts[] = currentContext.processName(qName, isAttribute);
         if (myParts == null) {
             return null;
         } else {
             parts[0] = myParts[0];
             parts[1] = myParts[1];
             parts[2] = myParts[2];
             return parts;
         }
     }
     /**
      * Look up a prefix and get the currently-mapped Namespace URI.
      *
      * <p>This method looks up the prefix in the current context.
      * Use the empty string ("") for the default Namespace.</p>
      *
      * @param prefix The prefix to look up.
      * @return The associated Namespace URI, or null if the prefix
      *         is undeclared in this context.
      * @see #getPrefix
      * @see #getPrefixes
      */
     public String getURI (String prefix)
     {
         return currentContext.getURI(prefix);
     }
     /**
      * Return an enumeration of all prefixes whose declarations are
      * active in the current context.
      * This includes declarations from parent contexts that have
      * not been overridden.
      *
      * <p><strong>Note:</strong> if there is a default prefix, it will not be
      * returned in this enumeration; check for the default prefix
      * using the {@link #getURI getURI} with an argument of "".</p>
      *
      * @return An enumeration of prefixes (never empty).
      * @see #getDeclaredPrefixes
      * @see #getURI
      */
     public Enumeration getPrefixes ()
     {
         return currentContext.getPrefixes();
     }
     /**
      * Return one of the prefixes mapped to a Namespace URI.
      *
      * <p>If more than one prefix is currently mapped to the same
      * URI, this method will make an arbitrary selection; if you
      * want all of the prefixes, use the {@link #getPrefixes}
      * method instead.</p>
      *
      * <p><strong>Note:</strong> this will never return the empty (default) prefix;
      * to check for a default prefix, use the {@link #getURI getURI}
      * method with an argument of "".</p>
      *
      * @param uri the namespace URI
      * @return one of the prefixes currently mapped to the URI supplied,
      *         or null if none is mapped or if the URI is assigned to
      *         the default namespace
      * @see #getPrefixes(java.lang.String)
      * @see #getURI
      */
     public String getPrefix (String uri)
     {
         return currentContext.getPrefix(uri);
     }
     /**
      * Return an enumeration of all prefixes for a given URI whose
      * declarations are active in the current context.
      * This includes declarations from parent contexts that have
      * not been overridden.
      *
      * <p>This method returns prefixes mapped to a specific Namespace
      * URI.  The xml: prefix will be included.  If you want only one
      * prefix that's mapped to the Namespace URI, and you don't care
      * which one you get, use the {@link #getPrefix getPrefix}
      *  method instead.</p>
      *
      * <p><strong>Note:</strong> the empty (default) prefix is <em>never</em> included
      * in this enumeration; to check for the presence of a default
      * Namespace, use the {@link #getURI getURI} method with an
      * argument of "".</p>
      *
      * @param uri The Namespace URI.
      * @return An enumeration of prefixes (never empty).
      * @see #getPrefix
      * @see #getDeclaredPrefixes
      * @see #getURI
      */
     public Enumeration getPrefixes (String uri)
     {
         Vector prefixes = new Vector();
         Enumeration allPrefixes = getPrefixes();
         while (allPrefixes.hasMoreElements()) {
             String prefix = (String)allPrefixes.nextElement();
             if (uri.equals(getURI(prefix))) {
                 prefixes.addElement(prefix);
             }
         }
         return prefixes.elements();
     }
     /**
      * Return an enumeration of all prefixes declared in this context.
      *
      * <p>The empty (default) prefix will be included in this
      * enumeration; note that this behaviour differs from that of
      * {@link #getPrefix} and {@link #getPrefixes}.</p>
      *
      * @return An enumeration of all prefixes declared in this
      *         context.
      * @see #getPrefixes
      * @see #getURI
      */
     public Enumeration getDeclaredPrefixes ()
     {
         return currentContext.getDeclaredPrefixes();
     }
     /**
      * Controls whether namespace declaration attributes are placed
      * into the {@link #NSDECL NSDECL} namespace
      * by {@link #processName processName()}.  This may only be
      * changed before any contexts have been pushed.
      *
      * @since SAX 2.1alpha
      *
      * @exception IllegalStateException when attempting to set this
      *  after any context has been pushed.
      */
     public void setNamespaceDeclUris (boolean value)
     {
         if (contextPos != 0)
             throw new IllegalStateException ();
         if (value == namespaceDeclUris)
             return;
         namespaceDeclUris = value;
         if (value)
             currentContext.declarePrefix ("xmlns", NSDECL);
         else {
             contexts[contextPos] = currentContext = new Context();
             currentContext.declarePrefix("xml", XMLNS);
         }
     }
     /**
      * Returns true if namespace declaration attributes are placed into
      * a namespace.  This behavior is not the default.
      *
      * @since SAX 2.1alpha
      */
     public boolean isNamespaceDeclUris ()
         { return namespaceDeclUris; }
     ////////////////////////////////////////////////////////////////////
     // Internal state.
     ////////////////////////////////////////////////////////////////////
     private Context contexts[];
     private Context currentContext;
     private int contextPos;
     private boolean namespaceDeclUris;
     ////////////////////////////////////////////////////////////////////
     // Internal classes.
     ////////////////////////////////////////////////////////////////////
     /**
      * Internal class for a single Namespace context.
      *
      * <p>This module caches and reuses Namespace contexts,
      * so the number allocated
      * will be equal to the element depth of the document, not to the total
      * number of elements (i.e. 5-10 rather than tens of thousands).
      * Also, data structures used to represent contexts are shared when
      * possible (child contexts without declarations) to further reduce
      * the amount of memory that's consumed.
      * </p>
      */
     final class Context {
         /**
          * Create the root-level Namespace context.
          */
         Context ()
         {
             copyTables();
         }
         /**
          * (Re)set the parent of this Namespace context.
          * The context must either have been freshly constructed,
          * or must have been cleared.
          *
          * @param context The parent Namespace context object.
          */
         void setParent (Context parent)
         {
             this.parent = parent;
             declarations = null;
             prefixTable = parent.prefixTable;
             uriTable = parent.uriTable;
             elementNameTable = parent.elementNameTable;
             attributeNameTable = parent.attributeNameTable;
             defaultNS = parent.defaultNS;
             declSeen = false;
         }
         /**
          * Makes associated state become collectible,
          * invalidating this context.
          * {@link #setParent} must be called before
          * this context may be used again.
          */
         void clear ()
         {
             parent = null;
             prefixTable = null;
             uriTable = null;
             elementNameTable = null;
             attributeNameTable = null;
             defaultNS = "";
         }
         /**
          * Declare a Namespace prefix for this context.
          *
          * @param prefix The prefix to declare.
          * @param uri The associated Namespace URI.
          * @see org.xml.sax.helpers.NamespaceSupport#declarePrefix
          */
         void declarePrefix (String prefix, String uri)
         {
                                 // Lazy processing...
 //          if (!declsOK)
 //              throw new IllegalStateException (
 //                  "can't declare any more prefixes in this context");
             if (!declSeen) {
                 copyTables();
             }
             if (declarations == null) {
                 declarations = new Vector();
             }
             prefix = prefix.intern();
             uri = uri.intern();
             if ("".equals(prefix)) {
                     defaultNS = uri;
             } else {
                 prefixTable.put(prefix, uri);
                 uriTable.put(uri, prefix); // may wipe out another prefix
             }
             declarations.addElement(prefix);
         }
         /**
          * Process an XML qualified name in this context.
          *
          * @param qName The XML qualified name.
          * @param isAttribute true if this is an attribute name.
          * @return An array of three strings containing the
          *         URI part (or empty string), the local part,
          *         and the raw name, all internalized, or null
          *         if there is an undeclared prefix.
          * @see org.xml.sax.helpers.NamespaceSupport#processName
          */
         String [] processName (String qName, boolean isAttribute)
         {
             String name[];
             Hashtable table;
                                 // Select the appropriate table.
             if (isAttribute) {
                 table = attributeNameTable;
             } else {
                 table = elementNameTable;
             }
                                 // Start by looking in the cache, and
                                 // return immediately if the name
                                 // is already known in this content
             name = (String[])table.get(qName);
             if (name != null) {
                 return name;
             }
                                 // We haven't seen this name in this
                                 // context before.  Maybe in the parent
                                 // context, but we can't assume prefix
                                 // bindings are the same.
             name = new String[3];
             name[2] = qName.intern();
             int index = qName.indexOf(':');
                                 // No prefix.
             if (index == -1) {
                 if (isAttribute) {
                     if (qName == "xmlns" && namespaceDeclUris)
                         name[0] = NSDECL;
                     else
                         name[0] = "";
                 } else {
                     name[0] = defaultNS;
                 }
                 name[1] = name[2];
             }
                                 // Prefix
             else {
                 String prefix = qName.substring(0, index);
                 String local = qName.substring(index+1);
                 String uri;
                 if ("".equals(prefix)) {
                     uri = defaultNS;
                 } else {
                     uri = (String)prefixTable.get(prefix);
                 }
                 if (uri == null
                         || (!isAttribute && "xmlns".equals (prefix))) {
                     return null;
                 }
                 name[0] = uri;
                 name[1] = local.intern();
             }
                                 // Save in the cache for future use.
                                 // (Could be shared with parent context...)
             table.put(name[2], name);
             return name;
         }
         /**
          * Look up the URI associated with a prefix in this context.
          *
          * @param prefix The prefix to look up.
          * @return The associated Namespace URI, or null if none is
          *         declared.
          * @see org.xml.sax.helpers.NamespaceSupport#getURI
          */
         String getURI (String prefix)
         {
             if ("".equals(prefix)) {
                 return defaultNS;
             } else if (prefixTable == null) {
                 return null;
             } else {
                 return (String)prefixTable.get(prefix);
             }
         }
         /**
          * Look up one of the prefixes associated with a URI in this context.
          *
          * <p>Since many prefixes may be mapped to the same URI,
          * the return value may be unreliable.</p>
          *
          * @param uri The URI to look up.
          * @return The associated prefix, or null if none is declared.
          * @see org.xml.sax.helpers.NamespaceSupport#getPrefix
          */
         String getPrefix (String uri) {
             if (uriTable != null) {
                 String uriPrefix = (String)uriTable.get(uri);
                 if (uriPrefix == null) return null;
                 String verifyNamespace = (String) prefixTable.get(uriPrefix);
                 if (uri.equals(verifyNamespace)) {
                     return uriPrefix;
                 }
             }
             return null;
         }
         /**
          * Return an enumeration of prefixes declared in this context.
          *
          * @return An enumeration of prefixes (possibly empty).
          * @see org.xml.sax.helpers.NamespaceSupport#getDeclaredPrefixes
          */
         Enumeration getDeclaredPrefixes ()
         {
             if (declarations == null) {
                 return EMPTY_ENUMERATION;
             } else {
                 return declarations.elements();
             }
         }
         /**
          * Return an enumeration of all prefixes currently in force.
          *
          * <p>The default prefix, if in force, is <em>not</em>
          * returned, and will have to be checked for separately.</p>
          *
          * @return An enumeration of prefixes (never empty).
          * @see org.xml.sax.helpers.NamespaceSupport#getPrefixes
          */
         Enumeration getPrefixes ()
         {
             if (prefixTable == null) {
                 return EMPTY_ENUMERATION;
             } else {
                 return prefixTable.keys();
             }
         }
         ////////////////////////////////////////////////////////////////
         // Internal methods.
         ////////////////////////////////////////////////////////////////
         /**
          * Copy on write for the internal tables in this context.
          *
          * <p>This class is optimized for the normal case where most
          * elements do not contain Namespace declarations.</p>
          */
         private void copyTables ()
         {
             if (prefixTable != null) {
                 prefixTable = (Hashtable)prefixTable.clone();
             } else {
                 prefixTable = new Hashtable();
             }
             if (uriTable != null) {
                 uriTable = (Hashtable)uriTable.clone();
             } else {
                 uriTable = new Hashtable();
             }
             elementNameTable = new Hashtable();
             attributeNameTable = new Hashtable();
             declSeen = true;
         }
         ////////////////////////////////////////////////////////////////
         // Protected state.
         ////////////////////////////////////////////////////////////////
         Hashtable prefixTable;
         Hashtable uriTable;
         Hashtable elementNameTable;
         Hashtable attributeNameTable;
         String defaultNS = "";
         ////////////////////////////////////////////////////////////////
         // Internal state.
         ////////////////////////////////////////////////////////////////
         private Vector declarations = null;
         private boolean declSeen = false;
         private Context parent = null;
     }
 }
 // end of NamespaceSupport.java

Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java@e530533619ec (annotated)

src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java