code: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you 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.
   */
  /*
   * $Id$
   */
  import java.util.Hashtable;
  
  public class MyCounter {
    static Hashtable counters = new Hashtable ();
  
  
    public void init(org.apache.xalan.extensions.XSLProcessorContext context, 
                     org.w3c.dom.Element elem) 
    {
      String name = elem.getAttribute("name");
      String value = elem.getAttribute("value");
      int val;
      try 
      {
        val = Integer.parseInt (value);
      } 
      catch (NumberFormatException e) 
      {
        e.printStackTrace ();
        val = 0;
      }
      counters.put (name, new Integer (val));
    }
  
    public int read(String name) 
    { 
      Integer cval = (Integer)counters.get(name);
      return (cval == null) ? 0 : cval.intValue();
    }
  
    public void incr(org.apache.xalan.extensions.XSLProcessorContext context,  
                     org.w3c.dom.Element elem) {
      String name = elem.getAttribute("name");
      Integer cval = (Integer) counters.get(name);
      int nval = (cval == null) ? 0 : (cval.intValue () + 1);
      counters.put (name, new Integer (nval));
    }
  }
  