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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package javax.faces.component;
20  
21  import java.lang.reflect.Array;
22  import java.util.Iterator;
23  
24  /**
25   * This utility iterator uses reflection to iterate over primitive arrays.
26   */
27  class _PrimitiveArrayIterator implements Iterator<Object>
28  {
29      public _PrimitiveArrayIterator(Object primitiveArray)
30      {
31          if (primitiveArray == null ||
32              !primitiveArray.getClass().isArray())
33          {
34              throw new IllegalArgumentException("Requires a primitive array");
35          }
36  
37          _primitiveArray = primitiveArray;
38          _size = Array.getLength(primitiveArray);
39      }
40  
41      public boolean hasNext()
42      {
43          return (_position < _size);
44      }
45  
46      public Object next()
47      {
48          return Array.get(_primitiveArray, _position++);
49      }
50  
51      public void remove()
52      {
53          throw new UnsupportedOperationException();
54      }
55  
56      private Object _primitiveArray;
57      private int    _size;
58      private int    _position;
59  }