1 /*
2 * $Id: MetaFieldProperty.java,v 1.1 2004/07/13 19:43:09 jstrachan Exp $
3 *
4 * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5 *
6 * Redistribution and use of this software and associated documentation
7 * ("Software"), with or without modification, are permitted provided that the
8 * following conditions are met:
9 * 1. Redistributions of source code must retain copyright statements and
10 * notices. Redistributions must also contain a copy of this document.
11 * 2. 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 * 3. The name "groovy" must not be used to endorse or promote products
15 * derived from this Software without prior written permission of The Codehaus.
16 * For written permission, please contact info@codehaus.org.
17 * 4. Products derived from this Software may not be called "groovy" nor may
18 * "groovy" appear in their names without prior written permission of The
19 * Codehaus. "groovy" is a registered trademark of The Codehaus.
20 * 5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
23 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
26 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
32 * DAMAGE.
33 *
34 */
35
36 package groovy.lang;
37
38
39 import java.lang.reflect.Field;
40
41 /***
42 * Represents a property on a bean which may have a getter and/or a setter
43 *
44 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
45 * @version $Revision: 1.1 $
46 */
47 public class MetaFieldProperty extends MetaProperty {
48
49 private Field field;
50
51 public MetaFieldProperty(Field field) {
52 super(field.getName(), field.getType());
53
54 this.field = field;
55 }
56
57 /***
58 * @return the property of the given object
59 * @throws Exception if the property could not be evaluated
60 */
61 public Object getProperty(Object object) throws Exception {
62 return field.get(object);
63 }
64
65 /***
66 * Sets the property on the given object to the new value
67 *
68 * @param object on which to set the property
69 * @param newValue the new value of the property
70 * @throws Exception if the property could not be set
71 */
72 public void setProperty(Object object, Object newValue) {
73 try {
74 field.set(object, newValue);
75 }
76 catch(Exception e) {
77 throw new GroovyRuntimeException("cannot set property " + name, e);
78 }
79 }
80 }