Source code: org/progeeks/meta/DefaultPropertyMutator.java
1 /*
2 * $Id: DefaultPropertyMutator.java,v 1.1 2003/08/27 21:49:46 pspeed Exp $
3 *
4 * Copyright (c) 2001-2002, Paul Speed
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2) Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3) Neither the names "Progeeks", "Meta-JB", nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 package org.progeeks.meta;
34
35 import java.beans.*;
36
37 /**
38 * A default implementation of PropertyMutator that will work
39 * with any MetaObject. It can be used as an implementation
40 * on its own or subclassed to provide performance improvements
41 * in metakit specific cases.
42 *
43 * @version $Revision: 1.1 $
44 * @author Paul Speed
45 */
46 public class DefaultPropertyMutator implements PropertyMutator
47 {
48 private String propertyName;
49 private MetaObject metaObject;
50
51 public DefaultPropertyMutator( String propertyName, MetaObject metaObject )
52 {
53 if( propertyName == null )
54 throw new IllegalArgumentException( "Property name cannot be null." );
55 if( metaObject == null )
56 throw new IllegalArgumentException( "Meta-object cannot be null." );
57 this.propertyName = propertyName;
58 this.metaObject = metaObject;
59 }
60
61 /**
62 * Returns the name of this property.
63 */
64 public String getPropertyName()
65 {
66 return( propertyName );
67 }
68
69 /**
70 * Returns the object that contains this property.
71 */
72 public MetaObject getParentObject()
73 {
74 return( metaObject );
75 }
76
77 /**
78 * Returns the info associated with this property.
79 */
80 public PropertyInfo getPropertyInfo()
81 {
82 return( metaObject.getMetaClass().getPropertyInfo( propertyName ) );
83 }
84
85 /**
86 * Returns the value of this property.
87 */
88 public Object getValue()
89 {
90 return( metaObject.getProperty( propertyName ) );
91 }
92
93 /**
94 * Resets the value of this property.
95 */
96 public void setValue( Object value )
97 {
98 metaObject.setProperty( propertyName, value );
99 }
100
101 /**
102 * Adds the specified PropertyChangeListener to this
103 * mutator.
104 */
105 public void addPropertyChangeListener( PropertyChangeListener l )
106 {
107 metaObject.addPropertyChangeListener( propertyName, l );
108 }
109
110 /**
111 * Removes the specified PropertyChangeListener from this
112 * mutator.
113 */
114 public void removePropertyChangeListener( PropertyChangeListener l )
115 {
116 metaObject.removePropertyChangeListener( propertyName, l );
117 }
118 }
119
120