1 /*
2 * Copyright (c) 2001-2004,
3 * RedVerst Group, ISP RAS http://www.ispras.ru
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * 3. The names "ATP", "TreeDL", "RedVerst", "ISP RAS"
17 * may not 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" AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 package com.unitesk.atp.dynattrs;
33
34 import java.io.Serializable;
35
36 /***
37 * The default implementation of {@link Attributed} methods that
38 * deals with indexed attributes.
39 *
40 * @author <A href="mailto:demakov@ispras.ru">Alexey Demakov</A>
41 * @version $Id: IndexedAttributedImpl.java,v 1.2 2005/02/21 16:50:26 all-x Exp $
42 */
43 public abstract class IndexedAttributedImpl implements Attributed, Serializable
44 {
45 /***
46 * {@inheritDoc}
47 */
48 public boolean isIndexed( String name )
49 {
50 Object value = getAttribute( name );
51
52 try
53 {
54 return Accessor.isIndexed( value );
55 }
56 catch( Exception e )
57 {
58 throw new AttributeException( this, name, value, e );
59 }
60 }
61
62 /***
63 * {@inheritDoc}
64 */
65 public int sizeAttribute( String name )
66 {
67 Object value = getAttribute( name );
68
69 try
70 {
71 return Accessor.sizeIndexed( value );
72 }
73 catch( Exception e )
74 {
75 throw new AttributeException( this, name, value, e );
76 }
77 }
78
79 /***
80 * {@inheritDoc}
81 */
82 public Object getAttribute( String name, int index )
83 {
84 Object value = getAttribute( name );
85
86 try
87 {
88 return Accessor.getIndexed( value, index );
89 }
90 catch( Exception e )
91 {
92 throw new AttributeException( this, name, value, e );
93 }
94 }
95
96 /***
97 * {@inheritDoc}
98 */
99 public void setAttribute( String name, int index, Object elem )
100 {
101 Object value = getAttribute( name );
102
103 try
104 {
105 Accessor.setIndexed( value, index, elem );
106 }
107 catch( Exception e )
108 {
109 throw new AttributeException( this, name, value, e );
110 }
111 }
112 }