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Java > Open Source Codes > groovy > lang > MetaArrayLengthProperty


1 /*
2  * $Id: MetaArrayLengthProperty.java,v 1.1 2004/07/16 19:43:11 jstump Exp $
3  *
4  * Copyright 2004 (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 /**
40  * Represents a property on a bean which may have a getter and/or a setter
41  *
42  * @author <a HREF="mailto:james@coredevelopers.net">James Strachan</a>
43  * @version $Revision: 1.1 $
44  */
45 public class MetaArrayLengthProperty extends MetaProperty {
46
47     public MetaArrayLengthProperty() {
48         super("length", int.class);
49     }
50
51     /**
52      * @return the property of the given object
53      * @throws Exception if the property could not be evaluated
54      */
55     public Object JavaDoc getProperty(Object JavaDoc object) throws Exception JavaDoc {
56         return new Integer JavaDoc(java.lang.reflect.Array.getLength(object));
57     }
58
59     /**
60      * Sets the property on the given object to the new value
61      *
62      * @param object on which to set the property
63      * @param newValue the new value of the property
64      * @throws Exception if the property could not be set
65      */
66     public void setProperty(Object JavaDoc object, Object JavaDoc newValue) {
67         throw new ReadOnlyPropertyException("length", object.getClass());
68     }
69 }
70
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