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 }