cvs commit: xml-axis/java/src/org/apache/axis/utils NSStack.java

[jm...@apache.org]

jmsnell     01/03/25 00:38:25

  Added:       java/src/org/apache/axis/utils NSStack.java
  Log:
  Adding the NSStack class (will be used by encoding architecture)
  
  Revision  Changes    Path
  1.1                  xml-axis/java/src/org/apache/axis/utils/NSStack.java
  
  Index: NSStack.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   *
   * Copyright (c) 1999 The Apache Software Foundation.  All rights 
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:  
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Axis" and "Apache Software Foundation" must
   *    not be used to endorse or promote products derived from this
   *    software without prior written permission. For written 
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    nor may "Apache" appear in their name, without prior written
   *    permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  package org.apache.axis.utils;
  
  import java.util.Hashtable;
  import java.util.Stack;
  
  /**
   * @author: James Snell
   */
  public class NSStack { 
      
      private Stack stack;
      private Hashtable table;
      
      public NSStack() {}
      
      public NSStack(Hashtable table) {
          push(table);
      }
      
      public void push() {
          if (stack == null) stack = new Stack();
          table = new Hashtable();
          stack.push(table);
      }
      
      public void push(Hashtable table) {
          if (stack == null) stack = new Stack();
          stack.push(table);
      }
      
      public Hashtable peek() {
          return table;
      }
      
      public Hashtable pop() {
          if (stack != null) {
              Hashtable t = (Hashtable)stack.pop();
              table = (Hashtable)stack.peek();
              return t;
          }
          return null;
      }
      
      public void add(String namespaceURI, String prefix) {
          if (stack == null) push();
          table.put(namespaceURI, prefix);
      }
      
      public void remove(String namespaceURI) {
          if (stack != null) 
              table.remove(namespaceURI);
      }
      
      public String getPrefix(String namespaceURI) {
          if (stack != null) {
              for (int n = stack.size() - 1; n >= 0; n--) {
                  Hashtable t = (Hashtable)stack.elementAt(n);
                  if (t.containsKey(namespaceURI)) 
                      return (String)t.get(namespaceURI);
              }
          }
          return null;
      }
      
      public boolean isDeclared(String namespaceURI) {
          if (stack != null) {
              for (int n = stack.size() - 1; n >= 0; n--) {
                  Hashtable t = (Hashtable)stack.elementAt(n);
                  if (t.containsKey(namespaceURI))
                      return true;
              }
          }
          return false;
      }
  }