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    1   /*
    2    * Copyright 1999-2001,2004 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package org.apache.commons.jexl.util;
    18
    19
    20  import java.util.Iterator;
    21  import java.util.Enumeration;
    22
    23  /***
    24   * An Iterator wrapper for an Enumeration.
    25   *
    26   * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
    27   * @version $Id: EnumerationIterator.java,v 1.3 2004/02/28 13:45:21 yoavs Exp $
    28   */
    29  public class EnumerationIterator implements Iterator
    30  {
    31      /***
    32       * The enumeration to iterate.
    33       */
    34      private Enumeration enum = null;
    35
    36      /***
    37       * Creates a new iteratorwrapper instance for the specified
    38       * Enumeration.
    39       *
    40       * @param enum  The Enumeration to wrap.
    41       */
    42      public EnumerationIterator( Enumeration enum)
    43      {
    44          this.enum = enum;
    45      }
    46
    47      /***
    48       * Move to next element in the array.
    49       *
    50       * @return The next object in the array.
    51       */
    52      public Object next()
    53      {
    54          return enum.nextElement();
    55      }
    56
    57      /***
    58       * Check to see if there is another element in the array.
    59       *
    60       * @return Whether there is another element.
    61       */
    62      public boolean hasNext()
    63      {
    64          return enum.hasMoreElements();
    65      }
    66
    67      /***
    68       *  Unimplemented.  No analogy in Enumeration
    69       */
    70      public void remove()
    71      {
    72          // not implemented
    73      }
    74
    75  }