1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18
19 package org.apache.commons.beanutils.converters;
20
21
22 import java.util.List;
23 import org.apache.commons.beanutils.ConversionException;
24
25
26 /**
27 * <p>Standard {@link org.apache.commons.beanutils.Converter} implementation that converts an incoming
28 * String into a primitive array of byte. On a conversion failure, returns
29 * a specified default value or throws a {@link ConversionException} depending
30 * on how this instance is constructed.</p>
31 *
32 * @version $Id$
33 * @since 1.4
34 * @deprecated Replaced by the new {@link ArrayConverter} implementation
35 */
36
37 @Deprecated
38 public final class ByteArrayConverter extends AbstractArrayConverter {
39
40
41 // ----------------------------------------------------------- Constructors
42
43
44 /**
45 * Create a {@link org.apache.commons.beanutils.Converter} that will
46 * throw a {@link ConversionException} if a conversion error occurs.
47 */
48 public ByteArrayConverter() {
49
50 this.defaultValue = null;
51 this.useDefault = false;
52
53 }
54
55
56 /**
57 * Create a {@link org.apache.commons.beanutils.Converter} that will return
58 * the specified default value if a conversion error occurs.
59 *
60 * @param defaultValue The default value to be returned
61 */
62 public ByteArrayConverter(final Object defaultValue) {
63
64 this.defaultValue = defaultValue;
65 this.useDefault = true;
66
67 }
68
69
70 // ------------------------------------------------------- Static Variables
71
72
73 /**
74 * <p>Model object for type comparisons.</p>
75 */
76 private static final byte[] MODEL = new byte[0];
77
78
79 // --------------------------------------------------------- Public Methods
80
81
82 /**
83 * Convert the specified input object into an output object of the
84 * specified type.
85 *
86 * @param type Data type to which this value should be converted
87 * @param value The input value to be converted
88 * @return the converted value
89 * @throws ConversionException if conversion cannot be performed
90 * successfully
91 */
92 @Override
93 public Object convert(final Class type, final Object value) {
94
95 // Deal with a null value
96 if (value == null) {
97 if (useDefault) {
98 return (defaultValue);
99 } else {
100 throw new ConversionException("No value specified");
101 }
102 }
103
104 // Deal with the no-conversion-needed case
105 if (MODEL.getClass() == value.getClass()) {
106 return (value);
107 }
108
109 // Deal with input value as a String array
110 if (strings.getClass() == value.getClass()) {
111 try {
112 final String[] values = (String[]) value;
113 final byte[] results = new byte[values.length];
114 for (int i = 0; i < values.length; i++) {
115 results[i] = Byte.parseByte(values[i]);
116 }
117 return (results);
118 } catch (final Exception e) {
119 if (useDefault) {
120 return (defaultValue);
121 } else {
122 throw new ConversionException(value.toString(), e);
123 }
124 }
125 }
126
127 // Parse the input value as a String into elements
128 // and convert to the appropriate type
129 try {
130 final List list = parseElements(value.toString());
131 final byte[] results = new byte[list.size()];
132 for (int i = 0; i < results.length; i++) {
133 results[i] = Byte.parseByte((String) list.get(i));
134 }
135 return (results);
136 } catch (final Exception e) {
137 if (useDefault) {
138 return (defaultValue);
139 } else {
140 throw new ConversionException(value.toString(), e);
141 }
142 }
143
144 }
145
146
147 }