001 /*
002 * $Id: MetaProperty.java,v 1.2 2004/07/13 19:43:07 jstrachan Exp $
003 *
004 * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005 *
006 * Redistribution and use of this software and associated documentation
007 * ("Software"), with or without modification, are permitted provided that the
008 * following conditions are met:
009 * 1. Redistributions of source code must retain copyright statements and
010 * notices. Redistributions must also contain a copy of this document.
011 * 2. Redistributions in binary form must reproduce the above copyright
012 * notice, this list of conditions and the following disclaimer in the
013 * documentation and/or other materials provided with the distribution.
014 * 3. The name "groovy" must not be used to endorse or promote products
015 * derived from this Software without prior written permission of The Codehaus.
016 * For written permission, please contact info@codehaus.org.
017 * 4. Products derived from this Software may not be called "groovy" nor may
018 * "groovy" appear in their names without prior written permission of The
019 * Codehaus. "groovy" is a registered trademark of The Codehaus.
020 * 5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
021 *
022 * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
023 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
024 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
025 * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
026 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
028 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
031 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
032 * DAMAGE.
033 *
034 */
035 package groovy.lang;
036
037 /**
038 * Represents a property on a bean which may have a getter and/or a setter
039 *
040 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
041 * @version $Revision: 1.2 $
042 */
043 public abstract class MetaProperty {
044
045 protected String name;
046 protected Class type;
047
048 public MetaProperty(String name, Class type) {
049 this.name = name;
050 this.type = type;
051 }
052
053 /**
054 * @return the property of the given object
055 * @throws Exception if the property could not be evaluated
056 */
057 public abstract Object getProperty(Object object) throws Exception;
058
059 /**
060 * Sets the property on the given object to the new value
061 *
062 * @param object on which to set the property
063 * @param newValue the new value of the property
064 * @throws Exception if the property could not be set
065 */
066 public abstract void setProperty(Object object, Object newValue);
067
068 public String getName() {
069 return name;
070 }
071
072 /**
073 * @return the type of the property
074 */
075 public Class getType() {
076 return type;
077 }
078
079 }