content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 1999-2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id: CustomStringPool.java,v 1.2.4.1 2005/09/15 08:14:59 suresh_emailid Exp $
   */
  
  package jaxp.sun.org.apache.xml.internal.dtm.ref;
  import java.util.Hashtable;
  
  /** <p>CustomStringPool is an example of appliction provided data structure
   * for a DTM implementation to hold symbol references, e.g. elelment names.
   * It will follow the DTMDStringPool interface and use two simple methods
   * indexToString(int i) and stringToIndex(Sring s) to map between a set of
   * string values and a set of integer index values.  Therefore, an application
   * may improve DTM processing speed by substituting the DTM symbol resolution
   * tables with application specific quick symbol resolution tables.</p>
   *
   * %REVIEW% The only difference between this an DTMStringPool seems to be that
   * it uses a java.lang.Hashtable full of Integers rather than implementing its
   * own hashing. Joe deliberately avoided that approach when writing
   * DTMStringPool, since it is both much more memory-hungry and probably slower
   * -- especially in JDK 1.1.x, where Hashtable is synchronized. We need to
   * either justify this implementation or discard it.
   *
   * <p>Status: In progress, under discussion.</p>
   * */
  public class CustomStringPool extends DTMStringPool {
          //final Vector m_intToString;
          //static final int HASHPRIME=101;
          //int[] m_hashStart=new int[HASHPRIME];
          final Hashtable m_stringToInt = new Hashtable();
          public static final int NULL=-1;
  
          public CustomStringPool()
          {
                  super();
                  /*m_intToString=new Vector();
                  System.out.println("In constructor m_intToString is " +
                                                                                           ((null == m_intToString) ? "null" : "not null"));*/
                  //m_stringToInt=new Hashtable();
                  //removeAllElements();
          }
  
          public void removeAllElements()
          {
                  m_intToString.removeAllElements();
                  if (m_stringToInt != null)
                          m_stringToInt.clear();
          }
  
          /** @return string whose value is uniquely identified by this integer index.
           * @throws java.lang.ArrayIndexOutOfBoundsException
           *  if index doesn't map to a string.
           * */
          public String indexToString(int i)
          throws java.lang.ArrayIndexOutOfBoundsException
          {
                  return(String) m_intToString.elementAt(i);
          }
  
          /** @return integer index uniquely identifying the value of this string. */
          public int stringToIndex(String s)
          {
                  if (s==null) return NULL;
                  Integer iobj=(Integer)m_stringToInt.get(s);
                  if (iobj==null) {
                          m_intToString.addElement(s);
                          iobj=new Integer(m_intToString.size());
                          m_stringToInt.put(s,iobj);
                  }
                  return iobj.intValue();
          }
  }
  