Source code: ognl/SetPropertyAccessor.java
1 //--------------------------------------------------------------------------
2 // Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
3 // All rights reserved.
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
7 // met:
8 //
9 // Redistributions of source code must retain the above copyright notice,
10 // this list of conditions and the following disclaimer.
11 // Redistributions in binary form must reproduce the above copyright
12 // notice, this list of conditions and the following disclaimer in the
13 // documentation and/or other materials provided with the distribution.
14 // Neither the name of the Drew Davidson nor the names of its contributors
15 // may be used to endorse or promote products derived from this software
16 // without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
25 // OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
28 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
29 // DAMAGE.
30 //--------------------------------------------------------------------------
31 package ognl;
32
33 import java.util.*;
34
35 /**
36 * Implementation of PropertyAccessor that uses numbers and dynamic subscripts as
37 * properties to index into Lists.
38 * @author Luke Blanshard (blanshlu@netscape.net)
39 * @author Drew Davidson (drew@ognl.org)
40 */
41 public class SetPropertyAccessor extends ObjectPropertyAccessor
42 implements PropertyAccessor // This is here to make javadoc show this class as an implementor
43 {
44 public Object getProperty( Map context, Object target, Object name ) throws OgnlException
45 {
46 Set set = (Set)target;
47
48 if ( name instanceof String ) {
49 Object result;
50
51 if (name.equals("size")) {
52 result = new Integer(set.size());
53 } else {
54 if (name.equals("iterator")) {
55 result = set.iterator();
56 } else {
57 if (name.equals("isEmpty")) {
58 result = set.isEmpty() ? Boolean.TRUE : Boolean.FALSE;
59 } else {
60 result = super.getProperty( context, target, name );
61 }
62 }
63 }
64 return result;
65 }
66
67 throw new NoSuchPropertyException( target, name );
68 }
69 }