1 package org.apache.commons.ognl;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.Enumeration;
23
24 /**
25 * Implementation of ElementsAccessor that returns a single-element iterator, containing the original target object.
26 *
27 * @author Luke Blanshard (blanshlu@netscape.net)
28 * @author Drew Davidson (drew@ognl.org)
29 */
30 public class ObjectElementsAccessor
31 implements ElementsAccessor
32 {
33 /**
34 * {@inheritDoc}
35 */
36 public Enumeration<?> getElements( Object target )
37 {
38 final Object object = target;
39
40 return new Enumeration<Object>()
41 {
42 private boolean seen = false;
43
44 public boolean hasMoreElements()
45 {
46 return !seen;
47 }
48
49 public Object nextElement()
50 {
51 Object result = null;
52
53 if ( !seen )
54 {
55 result = object;
56 seen = true;
57 }
58 return result;
59 }
60 };
61 }
62 }