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18 package org.apache.commons.beanutils.converters;
19
20
21 import java.util.List;
22 import org.apache.commons.beanutils.ConversionException;
23 import org.apache.commons.beanutils.Converter;
24
25
26 /**
27 * <p>Standard {@link Converter} implementation that converts an incoming
28 * String into a primitive array of boolean. 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 * @author Craig R. McClanahan
33 * @version $Revision: 1.7 $ $Date: 2004/02/28 13:18:34 $
34 * @since 1.4
35 */
36
37 public final class BooleanArrayConverter extends AbstractArrayConverter {
38
39
40
41
42
43 /**
44 * Create a {@link Converter} that will throw a {@link ConversionException}
45 * if a conversion error occurs.
46 */
47 public BooleanArrayConverter() {
48
49 this.defaultValue = null;
50 this.useDefault = false;
51
52 }
53
54
55 /**
56 * Create a {@link Converter} that will return the specified default value
57 * if a conversion error occurs.
58 *
59 * @param defaultValue The default value to be returned
60 */
61 public BooleanArrayConverter(Object defaultValue) {
62
63 this.defaultValue = defaultValue;
64 this.useDefault = true;
65
66 }
67
68
69
70
71
72 /**
73 * <p>Model object for type comparisons.</p>
74 */
75 private static boolean model[] = new boolean[0];
76
77
78
79
80
81 /**
82 * Convert the specified input object into an output object of the
83 * specified type.
84 *
85 * @param type Data type to which this value should be converted
86 * @param value The input value to be converted
87 *
88 * @exception ConversionException if conversion cannot be performed
89 * successfully
90 */
91 public Object convert(Class type, Object value) {
92
93
94 if (value == null) {
95 if (useDefault) {
96 return (defaultValue);
97 } else {
98 throw new ConversionException("No value specified");
99 }
100 }
101
102
103 if (model.getClass() == value.getClass()) {
104 return (value);
105 }
106
107
108 if (strings.getClass() == value.getClass()) {
109 try {
110 String values[] = (String[]) value;
111 boolean results[] = new boolean[values.length];
112 for (int i = 0; i < values.length; i++) {
113 String stringValue = values[i];
114 if (stringValue.equalsIgnoreCase("yes") ||
115 stringValue.equalsIgnoreCase("y") ||
116 stringValue.equalsIgnoreCase("true") ||
117 stringValue.equalsIgnoreCase("on") ||
118 stringValue.equalsIgnoreCase("1")) {
119 results[i] = true;
120 } else if (stringValue.equalsIgnoreCase("no") ||
121 stringValue.equalsIgnoreCase("n") ||
122 stringValue.equalsIgnoreCase("false") ||
123 stringValue.equalsIgnoreCase("off") ||
124 stringValue.equalsIgnoreCase("0")) {
125 results[i] = false;
126 } else {
127 if (useDefault) {
128 return (defaultValue);
129 } else {
130 throw new ConversionException(value.toString());
131 }
132 }
133 }
134 return (results);
135 } catch (Exception e) {
136 if (useDefault) {
137 return (defaultValue);
138 } else {
139 throw new ConversionException(value.toString(), e);
140 }
141 }
142 }
143
144
145
146 try {
147 List list = parseElements(value.toString());
148 boolean results[] = new boolean[list.size()];
149 for (int i = 0; i < results.length; i++) {
150 String stringValue = (String) list.get(i);
151 if (stringValue.equalsIgnoreCase("yes") ||
152 stringValue.equalsIgnoreCase("y") ||
153 stringValue.equalsIgnoreCase("true") ||
154 stringValue.equalsIgnoreCase("on") ||
155 stringValue.equalsIgnoreCase("1")) {
156 results[i] = true;
157 } else if (stringValue.equalsIgnoreCase("no") ||
158 stringValue.equalsIgnoreCase("n") ||
159 stringValue.equalsIgnoreCase("false") ||
160 stringValue.equalsIgnoreCase("off") ||
161 stringValue.equalsIgnoreCase("0")) {
162 results[i] = false;
163 } else {
164 if (useDefault) {
165 return (defaultValue);
166 } else {
167 throw new ConversionException(value.toString());
168 }
169 }
170 }
171 return (results);
172 } catch (Exception e) {
173 if (useDefault) {
174 return (defaultValue);
175 } else {
176 throw new ConversionException(value.toString(), e);
177 }
178 }
179
180 }
181
182
183 }