| 1 | |
|
| 2 | |
|
| 3 | |
|
| 4 | |
|
| 5 | |
|
| 6 | |
|
| 7 | |
|
| 8 | |
|
| 9 | |
|
| 10 | |
|
| 11 | |
|
| 12 | |
|
| 13 | |
|
| 14 | |
|
| 15 | |
|
| 16 | |
|
| 17 | |
|
| 18 | |
|
| 19 | |
|
| 20 | |
|
| 21 | |
|
| 22 | |
package org.webmacro.util; |
| 23 | |
|
| 24 | |
|
| 25 | |
|
| 26 | |
|
| 27 | |
|
| 28 | |
|
| 29 | |
|
| 30 | |
public final class CastUtil |
| 31 | |
{ |
| 32 | |
|
| 33 | 2 | static private CastUtil _singleton = new CastUtil(); |
| 34 | |
|
| 35 | |
|
| 36 | |
private CastUtil () |
| 37 | 2 | { |
| 38 | 2 | } |
| 39 | |
|
| 40 | |
public static CastUtil getInstance () |
| 41 | |
{ |
| 42 | 0 | return _singleton; |
| 43 | |
} |
| 44 | |
|
| 45 | |
public static Boolean toBoolean (java.lang.Object o) |
| 46 | |
{ |
| 47 | 0 | if (o == null) return Boolean.FALSE; |
| 48 | 0 | return Boolean.valueOf(o.toString()); |
| 49 | |
} |
| 50 | |
|
| 51 | |
public static Character toChar (Object o) throws org.webmacro.PropertyException |
| 52 | |
{ |
| 53 | 0 | Character c = null; |
| 54 | 0 | if (o == null || o == "") return null; |
| 55 | 0 | if (o instanceof Character) return (Character) o; |
| 56 | 0 | if (o instanceof Number) |
| 57 | |
{ |
| 58 | |
try |
| 59 | |
{ |
| 60 | 0 | c = new Character((char) ((Number) o).intValue()); |
| 61 | |
} |
| 62 | 0 | catch (Exception e) |
| 63 | |
{ |
| 64 | 0 | throw new IllegalArgumentException( |
| 65 | |
"Not a valid char: " + |
| 66 | |
o.toString() + "; type=" + o.getClass().getName()); |
| 67 | 0 | } |
| 68 | |
} |
| 69 | 0 | else if (o instanceof String) |
| 70 | |
{ |
| 71 | 0 | String s = (String) o; |
| 72 | 0 | if (s.startsWith("\\u") && s.length() == 6) |
| 73 | |
{ |
| 74 | |
|
| 75 | 0 | int i = Integer.parseInt(s.substring(2), 16); |
| 76 | 0 | c = new Character((char) i); |
| 77 | 0 | } |
| 78 | |
else |
| 79 | |
{ |
| 80 | 0 | char ch = s.charAt(0); |
| 81 | 0 | c = new Character(ch); |
| 82 | |
} |
| 83 | 0 | } |
| 84 | |
else |
| 85 | |
{ |
| 86 | 0 | throw new org.webmacro.PropertyException( |
| 87 | |
"$Type.toChar() is unable to convert the supplied value to a Character." + |
| 88 | |
" The argument" |
| 89 | |
+ " must be a number or a String. The supplied argument was " |
| 90 | |
+ o + " of type " + o.getClass().getName()); |
| 91 | |
} |
| 92 | 0 | return c; |
| 93 | |
} |
| 94 | |
|
| 95 | |
public static Byte toByte (java.lang.Object o) |
| 96 | |
{ |
| 97 | 0 | if (o instanceof Byte) return (Byte) o; |
| 98 | 0 | Byte v = null; |
| 99 | |
try |
| 100 | |
{ |
| 101 | 0 | int i = Integer.parseInt(o.toString()); |
| 102 | 0 | v = new Byte((byte) i); |
| 103 | |
} |
| 104 | 0 | catch (Exception e) |
| 105 | |
{ |
| 106 | 0 | throw new IllegalArgumentException("Not a valid byte: " + |
| 107 | |
((o == null) ? "null" : |
| 108 | |
(o.toString() + "; type=" + o.getClass().getName()))); |
| 109 | 0 | } |
| 110 | 0 | return v; |
| 111 | |
} |
| 112 | |
|
| 113 | |
public static Short toShort (java.lang.Object o) |
| 114 | |
{ |
| 115 | 0 | if (o instanceof Short) return (Short) o; |
| 116 | 0 | Short v = null; |
| 117 | |
try |
| 118 | |
{ |
| 119 | 0 | int i = Integer.parseInt(o.toString()); |
| 120 | 0 | v = new Short((short) i); |
| 121 | |
} |
| 122 | 0 | catch (Exception e) |
| 123 | |
{ |
| 124 | 0 | throw new IllegalArgumentException("Not a valid short: " + |
| 125 | |
((o == null) ? "null" : |
| 126 | |
(o.toString() + "; type=" + o.getClass().getName()))); |
| 127 | 0 | } |
| 128 | 0 | return v; |
| 129 | |
} |
| 130 | |
|
| 131 | |
public static Integer toInt (java.lang.Object o) |
| 132 | |
{ |
| 133 | 0 | Integer i = null; |
| 134 | 0 | if (o instanceof Integer) return (Integer) o; |
| 135 | |
try |
| 136 | |
{ |
| 137 | 0 | i = new Integer(o.toString()); |
| 138 | |
} |
| 139 | 0 | catch (Exception e) |
| 140 | |
{ |
| 141 | 0 | throw new IllegalArgumentException( |
| 142 | |
"Not a valid int: " + |
| 143 | |
((o == null) ? "null" : |
| 144 | |
(o.toString() + "; type=" + o.getClass().getName()))); |
| 145 | 0 | } |
| 146 | 0 | return i; |
| 147 | |
} |
| 148 | |
|
| 149 | |
public static Long toLong (java.lang.Object o) |
| 150 | |
{ |
| 151 | 0 | Long l = null; |
| 152 | 0 | if (o instanceof Long) return (Long) o; |
| 153 | |
try |
| 154 | |
{ |
| 155 | 0 | l = new Long(o.toString()); |
| 156 | |
} |
| 157 | 0 | catch (Exception e) |
| 158 | |
{ |
| 159 | 0 | throw new IllegalArgumentException("Not a valid long: " + |
| 160 | |
((o == null) ? "null" : |
| 161 | |
(o.toString() + "; type=" + o.getClass().getName()))); |
| 162 | 0 | } |
| 163 | 0 | return l; |
| 164 | |
} |
| 165 | |
|
| 166 | |
public static Float toFloat (java.lang.Object o) |
| 167 | |
{ |
| 168 | 0 | Float f = null; |
| 169 | 0 | if (o instanceof Float) return (Float) o; |
| 170 | |
try |
| 171 | |
{ |
| 172 | 0 | f = new Float(o.toString()); |
| 173 | |
} |
| 174 | 0 | catch (Exception e) |
| 175 | |
{ |
| 176 | 0 | throw new IllegalArgumentException( |
| 177 | |
"Not a valid float: " + ((o == null) ? "null" : |
| 178 | |
(o.toString() + "; type=" + o.getClass().getName()))); |
| 179 | 0 | } |
| 180 | 0 | return f; |
| 181 | |
} |
| 182 | |
|
| 183 | |
public static Double toDouble (java.lang.Object o) |
| 184 | |
{ |
| 185 | 0 | Double d = null; |
| 186 | 0 | if (o instanceof Double) return (Double) o; |
| 187 | |
try |
| 188 | |
{ |
| 189 | 0 | d = new Double(o.toString()); |
| 190 | |
} |
| 191 | 0 | catch (Exception e) |
| 192 | |
{ |
| 193 | 0 | throw new IllegalArgumentException( |
| 194 | |
"Not a valid double: " + ((o == null) ? "null" : |
| 195 | |
(o.toString() + "; type=" + o.getClass().getName()))); |
| 196 | 0 | } |
| 197 | 0 | return d; |
| 198 | |
} |
| 199 | |
|
| 200 | |
public static String toString(java.lang.Object o) { |
| 201 | 0 | return (o != null ? o.toString() : null); |
| 202 | |
} |
| 203 | |
|
| 204 | |
static public void main (String[] args) |
| 205 | |
{ |
| 206 | 0 | println("77" |
| 207 | |
+ test(BOOLEAN, "77") |
| 208 | |
+ test(CHAR, "77") |
| 209 | |
+ test(BYTE, "77") |
| 210 | |
+ test(SHORT, "77") |
| 211 | |
+ test(INTEGER, "77") |
| 212 | |
+ test(LONG, "77") |
| 213 | |
+ test(FLOAT, "77") |
| 214 | |
+ test(DOUBLE, "77") |
| 215 | |
+ "."); |
| 216 | 0 | println("true: " + test(BOOLEAN, "true") + "."); |
| 217 | 0 | println("FalSE: " + test(BOOLEAN, "FalSE") + "."); |
| 218 | 0 | println("null: " + test(BOOLEAN, null) + "."); |
| 219 | 0 | } |
| 220 | |
|
| 221 | |
static private void println (String s) |
| 222 | |
{ |
| 223 | 0 | System.out.println(s); |
| 224 | 0 | } |
| 225 | |
|
| 226 | |
final static public int BOOLEAN = 1; |
| 227 | |
final static public int CHAR = 2; |
| 228 | |
final static public int BYTE = 3; |
| 229 | |
final static public int SHORT = 4; |
| 230 | |
final static public int INTEGER = 5; |
| 231 | |
final static public int LONG = 6; |
| 232 | |
final static public int FLOAT = 7; |
| 233 | |
final static public int DOUBLE = 8; |
| 234 | |
|
| 235 | |
static private String test (int type, Object val) |
| 236 | |
{ |
| 237 | 0 | String s = null; |
| 238 | |
try |
| 239 | |
{ |
| 240 | 0 | Object o = null; |
| 241 | 0 | switch (type) |
| 242 | |
{ |
| 243 | |
case BOOLEAN: |
| 244 | 0 | o = toBoolean(val); |
| 245 | 0 | break; |
| 246 | |
case CHAR: |
| 247 | 0 | o = toChar(val); |
| 248 | 0 | break; |
| 249 | |
case BYTE: |
| 250 | 0 | o = toByte(val); |
| 251 | 0 | break; |
| 252 | |
case SHORT: |
| 253 | 0 | o = toShort(val); |
| 254 | 0 | break; |
| 255 | |
case INTEGER: |
| 256 | 0 | o = toInt(val); |
| 257 | 0 | break; |
| 258 | |
case LONG: |
| 259 | 0 | o = toLong(val); |
| 260 | 0 | break; |
| 261 | |
case FLOAT: |
| 262 | 0 | o = toFloat(val); |
| 263 | 0 | break; |
| 264 | |
case DOUBLE: |
| 265 | 0 | o = toDouble(val); |
| 266 | 0 | break; |
| 267 | |
default: |
| 268 | 0 | throw new IllegalArgumentException("Unknown type: " + type); |
| 269 | |
} |
| 270 | 0 | s = ", " + o + " (" + o.getClass().getName() + ")"; |
| 271 | |
} |
| 272 | 0 | catch (Exception e) |
| 273 | |
{ |
| 274 | 0 | e.printStackTrace(); |
| 275 | 0 | } |
| 276 | 0 | return s; |
| 277 | |
} |
| 278 | |
|
| 279 | |
} |