J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | package javax.management.openmbean; |
| 28 | |
| 29 | |
| 30 | // java import |
| 31 | // |
| 32 | import java.lang.reflect.Array; |
| 33 | import java.lang.reflect.Constructor; |
| 34 | import java.lang.reflect.Method; |
| 35 | import java.lang.reflect.Modifier; |
| 36 | import java.util.Arrays; |
| 37 | import java.util.Collection; |
| 38 | import java.util.Collections; |
| 39 | import java.util.HashMap; |
| 40 | import java.util.HashSet; |
| 41 | import java.util.Map; |
| 42 | import java.util.Set; |
| 43 | import javax.management.Descriptor; |
| 44 | import javax.management.DescriptorRead; |
| 45 | import javax.management.ImmutableDescriptor; |
| 46 | import javax.management.MBeanAttributeInfo; |
| 47 | import com.sun.jmx.remote.util.EnvHelp; |
| 48 | |
| 49 | /** |
| 50 | * Describes an attribute of an open MBean. |
| 51 | * |
| 52 | * |
| 53 | * @since 1.5 |
| 54 | */ |
| 55 | public class OpenMBeanAttributeInfoSupport |
| 56 | extends MBeanAttributeInfo |
| 57 | implements OpenMBeanAttributeInfo { |
| 58 | |
| 59 | /* Serial version */ |
| 60 | static final long serialVersionUID = -4867215622149721849L; |
| 61 | |
| 62 | /** |
| 63 | * @serial The open mbean attribute's <i>open type</i> |
| 64 | */ |
| 65 | private OpenType<?> openType; |
| 66 | |
| 67 | /** |
| 68 | * @serial The open mbean attribute's default value |
| 69 | */ |
| 70 | private final Object defaultValue; |
| 71 | |
| 72 | /** |
| 73 | * @serial The open mbean attribute's legal values. This {@link |
| 74 | * Set} is unmodifiable |
| 75 | */ |
| 76 | private final Set<?> legalValues; // to be constructed unmodifiable |
| 77 | |
| 78 | /** |
| 79 | * @serial The open mbean attribute's min value |
| 80 | */ |
| 81 | private final Comparable minValue; |
| 82 | |
| 83 | /** |
| 84 | * @serial The open mbean attribute's max value |
| 85 | */ |
| 86 | private final Comparable maxValue; |
| 87 | |
| 88 | |
| 89 | // As this instance is immutable, these two values need only |
| 90 | // be calculated once. |
| 91 | private transient Integer myHashCode = null; |
| 92 | private transient String myToString = null; |
| 93 | |
| 94 | |
| 95 | /** |
| 96 | * Constructs an {@code OpenMBeanAttributeInfoSupport} instance, |
| 97 | * which describes the attribute of an open MBean with the |
| 98 | * specified {@code name}, {@code openType} and {@code |
| 99 | * description}, and the specified read/write access properties. |
| 100 | * |
| 101 | * @param name cannot be a null or empty string. |
| 102 | * |
| 103 | * @param description cannot be a null or empty string. |
| 104 | * |
| 105 | * @param openType cannot be null. |
| 106 | * |
| 107 | * @param isReadable {@code true} if the attribute has a getter |
| 108 | * exposed for management. |
| 109 | * |
| 110 | * @param isWritable {@code true} if the attribute has a setter |
| 111 | * exposed for management. |
| 112 | * |
| 113 | * @param isIs {@code true} if the attribute's getter is of the |
| 114 | * form <tt>is<i>XXX</i></tt>. |
| 115 | * |
| 116 | * @throws IllegalArgumentException if {@code name} or {@code |
| 117 | * description} are null or empty string, or {@code openType} is |
| 118 | * null. |
| 119 | */ |
| 120 | public OpenMBeanAttributeInfoSupport(String name, |
| 121 | String description, |
| 122 | OpenType<?> openType, |
| 123 | boolean isReadable, |
| 124 | boolean isWritable, |
| 125 | boolean isIs) { |
| 126 | this(name, description, openType, isReadable, isWritable, isIs, |
| 127 | (Descriptor) null); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * <p>Constructs an {@code OpenMBeanAttributeInfoSupport} instance, |
| 132 | * which describes the attribute of an open MBean with the |
| 133 | * specified {@code name}, {@code openType}, {@code |
| 134 | * description}, read/write access properties, and {@code Descriptor}.</p> |
| 135 | * |
| 136 | * <p>The {@code descriptor} can contain entries that will define |
| 137 | * the values returned by certain methods of this class, as |
| 138 | * explained in the {@link <a href="package-summary.html#constraints"> |
| 139 | * package description</a>}. |
| 140 | * |
| 141 | * @param name cannot be a null or empty string. |
| 142 | * |
| 143 | * @param description cannot be a null or empty string. |
| 144 | * |
| 145 | * @param openType cannot be null. |
| 146 | * |
| 147 | * @param isReadable {@code true} if the attribute has a getter |
| 148 | * exposed for management. |
| 149 | * |
| 150 | * @param isWritable {@code true} if the attribute has a setter |
| 151 | * exposed for management. |
| 152 | * |
| 153 | * @param isIs {@code true} if the attribute's getter is of the |
| 154 | * form <tt>is<i>XXX</i></tt>. |
| 155 | * |
| 156 | * @param descriptor The descriptor for the attribute. This may be null |
| 157 | * which is equivalent to an empty descriptor. |
| 158 | * |
| 159 | * @throws IllegalArgumentException if {@code name} or {@code |
| 160 | * description} are null or empty string, or {@code openType} is |
| 161 | * null, or the descriptor entries are invalid as described in the |
| 162 | * {@link <a href="package-summary.html#constraints">package |
| 163 | * description</a>}. |
| 164 | * |
| 165 | * @since 1.6 |
| 166 | */ |
| 167 | public OpenMBeanAttributeInfoSupport(String name, |
| 168 | String description, |
| 169 | OpenType<?> openType, |
| 170 | boolean isReadable, |
| 171 | boolean isWritable, |
| 172 | boolean isIs, |
| 173 | Descriptor descriptor) { |
| 174 | // Construct parent's state |
| 175 | // |
| 176 | super(name, |
| 177 | (openType==null) ? null : openType.getClassName(), |
| 178 | description, |
| 179 | isReadable, |
| 180 | isWritable, |
| 181 | isIs, |
| 182 | ImmutableDescriptor.union(descriptor, (openType==null)?null: |
| 183 | openType.getDescriptor())); |
| 184 | |
| 185 | // Initialize this instance's specific state |
| 186 | // |
| 187 | this.openType = openType; |
| 188 | |
| 189 | descriptor = getDescriptor(); // replace null by empty |
| 190 | this.defaultValue = valueFrom(descriptor, "defaultValue", openType); |
| 191 | this.legalValues = valuesFrom(descriptor, "legalValues", openType); |
| 192 | this.minValue = comparableValueFrom(descriptor, "minValue", openType); |
| 193 | this.maxValue = comparableValueFrom(descriptor, "maxValue", openType); |
| 194 | |
| 195 | try { |
| 196 | check(this); |
| 197 | } catch (OpenDataException e) { |
| 198 | throw new IllegalArgumentException(e.getMessage(), e); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Constructs an {@code OpenMBeanAttributeInfoSupport} instance, |
| 204 | * which describes the attribute of an open MBean with the |
| 205 | * specified {@code name}, {@code openType}, {@code description} |
| 206 | * and {@code defaultValue}, and the specified read/write access |
| 207 | * properties. |
| 208 | * |
| 209 | * @param name cannot be a null or empty string. |
| 210 | * |
| 211 | * @param description cannot be a null or empty string. |
| 212 | * |
| 213 | * @param openType cannot be null. |
| 214 | * |
| 215 | * @param isReadable {@code true} if the attribute has a getter |
| 216 | * exposed for management. |
| 217 | * |
| 218 | * @param isWritable {@code true} if the attribute has a setter |
| 219 | * exposed for management. |
| 220 | * |
| 221 | * @param isIs {@code true} if the attribute's getter is of the |
| 222 | * form <tt>is<i>XXX</i></tt>. |
| 223 | * |
| 224 | * @param defaultValue must be a valid value for the {@code |
| 225 | * openType} specified for this attribute; default value not |
| 226 | * supported for {@code ArrayType} and {@code TabularType}; can |
| 227 | * be null, in which case it means that no default value is set. |
| 228 | * |
| 229 | * @param <T> allows the compiler to check that the {@code defaultValue}, |
| 230 | * if non-null, has the correct Java type for the given {@code openType}. |
| 231 | * |
| 232 | * @throws IllegalArgumentException if {@code name} or {@code |
| 233 | * description} are null or empty string, or {@code openType} is |
| 234 | * null. |
| 235 | * |
| 236 | * @throws OpenDataException if {@code defaultValue} is not a |
| 237 | * valid value for the specified {@code openType}, or {@code |
| 238 | * defaultValue} is non null and {@code openType} is an {@code |
| 239 | * ArrayType} or a {@code TabularType}. |
| 240 | */ |
| 241 | public <T> OpenMBeanAttributeInfoSupport(String name, |
| 242 | String description, |
| 243 | OpenType<T> openType, |
| 244 | boolean isReadable, |
| 245 | boolean isWritable, |
| 246 | boolean isIs, |
| 247 | T defaultValue) |
| 248 | throws OpenDataException { |
| 249 | this(name, description, openType, isReadable, isWritable, isIs, |
| 250 | defaultValue, (T[]) null); |
| 251 | } |
| 252 | |
| 253 | |
| 254 | /** |
| 255 | * <p>Constructs an {@code OpenMBeanAttributeInfoSupport} instance, |
| 256 | * which describes the attribute of an open MBean with the |
| 257 | * specified {@code name}, {@code openType}, {@code description}, |
| 258 | * {@code defaultValue} and {@code legalValues}, and the specified |
| 259 | * read/write access properties.</p> |
| 260 | * |
| 261 | * <p>The contents of {@code legalValues} are copied, so subsequent |
| 262 | * modifications of the array referenced by {@code legalValues} |
| 263 | * have no impact on this {@code OpenMBeanAttributeInfoSupport} |
| 264 | * instance.</p> |
| 265 | * |
| 266 | * @param name cannot be a null or empty string. |
| 267 | * |
| 268 | * @param description cannot be a null or empty string. |
| 269 | * |
| 270 | * @param openType cannot be null. |
| 271 | * |
| 272 | * @param isReadable {@code true} if the attribute has a getter |
| 273 | * exposed for management. |
| 274 | * |
| 275 | * @param isWritable {@code true} if the attribute has a setter |
| 276 | * exposed for management. |
| 277 | * |
| 278 | * @param isIs {@code true} if the attribute's getter is of the |
| 279 | * form <tt>is<i>XXX</i></tt>. |
| 280 | * |
| 281 | * @param defaultValue must be a valid value |
| 282 | * for the {@code |
| 283 | * openType} specified for this attribute; default value not |
| 284 | * supported for {@code ArrayType} and {@code TabularType}; can |
| 285 | * be null, in which case it means that no default value is set. |
| 286 | * |
| 287 | * @param legalValues each contained value must be valid for the |
| 288 | * {@code openType} specified for this attribute; legal values |
| 289 | * not supported for {@code ArrayType} and {@code TabularType}; |
| 290 | * can be null or empty. |
| 291 | * |
| 292 | * @param <T> allows the compiler to check that the {@code |
| 293 | * defaultValue} and {@code legalValues}, if non-null, have the |
| 294 | * correct Java type for the given {@code openType}. |
| 295 | * |
| 296 | * @throws IllegalArgumentException if {@code name} or {@code |
| 297 | * description} are null or empty string, or {@code openType} is |
| 298 | * null. |
| 299 | * |
| 300 | * @throws OpenDataException if {@code defaultValue} is not a |
| 301 | * valid value for the specified {@code openType}, or one value in |
| 302 | * {@code legalValues} is not valid for the specified {@code |
| 303 | * openType}, or {@code defaultValue} is non null and {@code |
| 304 | * openType} is an {@code ArrayType} or a {@code TabularType}, or |
| 305 | * {@code legalValues} is non null and non empty and {@code |
| 306 | * openType} is an {@code ArrayType} or a {@code TabularType}, or |
| 307 | * {@code legalValues} is non null and non empty and {@code |
| 308 | * defaultValue} is not contained in {@code legalValues}. |
| 309 | */ |
| 310 | public <T> OpenMBeanAttributeInfoSupport(String name, |
| 311 | String description, |
| 312 | OpenType<T> openType, |
| 313 | boolean isReadable, |
| 314 | boolean isWritable, |
| 315 | boolean isIs, |
| 316 | T defaultValue, |
| 317 | T[] legalValues) |
| 318 | throws OpenDataException { |
| 319 | this(name, description, openType, isReadable, isWritable, isIs, |
| 320 | defaultValue, legalValues, null, null); |
| 321 | } |
| 322 | |
| 323 | |
| 324 | /** |
| 325 | * Constructs an {@code OpenMBeanAttributeInfoSupport} instance, |
| 326 | * which describes the attribute of an open MBean, with the |
| 327 | * specified {@code name}, {@code openType}, {@code description}, |
| 328 | * {@code defaultValue}, {@code minValue} and {@code maxValue}. |
| 329 | * |
| 330 | * It is possible to specify minimal and maximal values only for |
| 331 | * an open type whose values are {@code Comparable}. |
| 332 | * |
| 333 | * @param name cannot be a null or empty string. |
| 334 | * |
| 335 | * @param description cannot be a null or empty string. |
| 336 | * |
| 337 | * @param openType cannot be null. |
| 338 | * |
| 339 | * @param isReadable {@code true} if the attribute has a getter |
| 340 | * exposed for management. |
| 341 | * |
| 342 | * @param isWritable {@code true} if the attribute has a setter |
| 343 | * exposed for management. |
| 344 | * |
| 345 | * @param isIs {@code true} if the attribute's getter is of the |
| 346 | * form <tt>is<i>XXX</i></tt>. |
| 347 | * |
| 348 | * @param defaultValue must be a valid value for the {@code |
| 349 | * openType} specified for this attribute; default value not |
| 350 | * supported for {@code ArrayType} and {@code TabularType}; can be |
| 351 | * null, in which case it means that no default value is set. |
| 352 | * |
| 353 | * @param minValue must be valid for the {@code openType} |
| 354 | * specified for this attribute; can be null, in which case it |
| 355 | * means that no minimal value is set. |
| 356 | * |
| 357 | * @param maxValue must be valid for the {@code openType} |
| 358 | * specified for this attribute; can be null, in which case it |
| 359 | * means that no maximal value is set. |
| 360 | * |
| 361 | * @param <T> allows the compiler to check that the {@code |
| 362 | * defaultValue}, {@code minValue}, and {@code maxValue}, if |
| 363 | * non-null, have the correct Java type for the given {@code |
| 364 | * openType}. |
| 365 | * |
| 366 | * @throws IllegalArgumentException if {@code name} or {@code |
| 367 | * description} are null or empty string, or {@code openType} is |
| 368 | * null. |
| 369 | * |
| 370 | * @throws OpenDataException if {@code defaultValue}, {@code |
| 371 | * minValue} or {@code maxValue} is not a valid value for the |
| 372 | * specified {@code openType}, or {@code defaultValue} is non null |
| 373 | * and {@code openType} is an {@code ArrayType} or a {@code |
| 374 | * TabularType}, or both {@code minValue} and {@code maxValue} are |
| 375 | * non-null and {@code minValue.compareTo(maxValue) > 0} is {@code |
| 376 | * true}, or both {@code defaultValue} and {@code minValue} are |
| 377 | * non-null and {@code minValue.compareTo(defaultValue) > 0} is |
| 378 | * {@code true}, or both {@code defaultValue} and {@code maxValue} |
| 379 | * are non-null and {@code defaultValue.compareTo(maxValue) > 0} |
| 380 | * is {@code true}. |
| 381 | */ |
| 382 | public <T> OpenMBeanAttributeInfoSupport(String name, |
| 383 | String description, |
| 384 | OpenType<T> openType, |
| 385 | boolean isReadable, |
| 386 | boolean isWritable, |
| 387 | boolean isIs, |
| 388 | T defaultValue, |
| 389 | Comparable<T> minValue, |
| 390 | Comparable<T> maxValue) |
| 391 | throws OpenDataException { |
| 392 | this(name, description, openType, isReadable, isWritable, isIs, |
| 393 | defaultValue, null, minValue, maxValue); |
| 394 | } |
| 395 | |
| 396 | private <T> OpenMBeanAttributeInfoSupport(String name, |
| 397 | String description, |
| 398 | OpenType<T> openType, |
| 399 | boolean isReadable, |
| 400 | boolean isWritable, |
| 401 | boolean isIs, |
| 402 | T defaultValue, |
| 403 | T[] legalValues, |
| 404 | Comparable<T> minValue, |
| 405 | Comparable<T> maxValue) |
| 406 | throws OpenDataException { |
| 407 | super(name, |
| 408 | (openType==null) ? null : openType.getClassName(), |
| 409 | description, |
| 410 | isReadable, |
| 411 | isWritable, |
| 412 | isIs, |
| 413 | makeDescriptor(openType, |
| 414 | defaultValue, legalValues, minValue, maxValue)); |
| 415 | |
| 416 | this.openType = openType; |
| 417 | |
| 418 | Descriptor d = getDescriptor(); |
| 419 | this.defaultValue = defaultValue; |
| 420 | this.minValue = minValue; |
| 421 | this.maxValue = maxValue; |
| 422 | // We already converted the array into an unmodifiable Set |
| 423 | // in the descriptor. |
| 424 | this.legalValues = (Set<?>) d.getFieldValue("legalValues"); |
| 425 | |
| 426 | check(this); |
| 427 | } |
| 428 | |
| 429 | /** |
| 430 | * An object serialized in a version of the API before Descriptors were |
| 431 | * added to this class will have an empty or null Descriptor. |
| 432 | * For consistency with our |
| 433 | * behavior in this version, we must replace the object with one |
| 434 | * where the Descriptors reflect the same values of openType, defaultValue, |
| 435 | * etc. |
| 436 | **/ |
| 437 | private Object readResolve() { |
| 438 | if (getDescriptor().getFieldNames().length == 0) { |
| 439 | OpenType<Object> xopenType = cast(openType); |
| 440 | Set<Object> xlegalValues = cast(legalValues); |
| 441 | Comparable<Object> xminValue = cast(minValue); |
| 442 | Comparable<Object> xmaxValue = cast(maxValue); |
| 443 | return new OpenMBeanAttributeInfoSupport( |
| 444 | name, description, openType, |
| 445 | isReadable(), isWritable(), isIs(), |
| 446 | makeDescriptor(xopenType, defaultValue, xlegalValues, |
| 447 | xminValue, xmaxValue)); |
| 448 | } else |
| 449 | return this; |
| 450 | } |
| 451 | |
| 452 | static void check(OpenMBeanParameterInfo info) throws OpenDataException { |
| 453 | OpenType openType = info.getOpenType(); |
| 454 | if (openType == null) |
| 455 | throw new IllegalArgumentException("OpenType cannot be null"); |
| 456 | |
| 457 | if (info.getName() == null || |
| 458 | info.getName().trim().equals("")) |
| 459 | throw new IllegalArgumentException("Name cannot be null or empty"); |
| 460 | |
| 461 | if (info.getDescription() == null || |
| 462 | info.getDescription().trim().equals("")) |
| 463 | throw new IllegalArgumentException("Description cannot be null or empty"); |
| 464 | |
| 465 | // Check and initialize defaultValue |
| 466 | // |
| 467 | if (info.hasDefaultValue()) { |
| 468 | // Default value not supported for ArrayType and TabularType |
| 469 | // Cast to Object because "OpenType<T> instanceof" is illegal |
| 470 | if (openType.isArray() || (Object)openType instanceof TabularType) { |
| 471 | throw new OpenDataException("Default value not supported " + |
| 472 | "for ArrayType and TabularType"); |
| 473 | } |
| 474 | // Check defaultValue's class |
| 475 | if (!openType.isValue(info.getDefaultValue())) { |
| 476 | final String msg = |
| 477 | "Argument defaultValue's class [\"" + |
| 478 | info.getDefaultValue().getClass().getName() + |
| 479 | "\"] does not match the one defined in openType[\"" + |
| 480 | openType.getClassName() +"\"]"; |
| 481 | throw new OpenDataException(msg); |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | // Check that we don't have both legalValues and min or max |
| 486 | // |
| 487 | if (info.hasLegalValues() && |
| 488 | (info.hasMinValue() || info.hasMaxValue())) { |
| 489 | throw new OpenDataException("cannot have both legalValue and " + |
| 490 | "minValue or maxValue"); |
| 491 | } |
| 492 | |
| 493 | // Check minValue and maxValue |
| 494 | if (info.hasMinValue() && !openType.isValue(info.getMinValue())) { |
| 495 | final String msg = |
| 496 | "Type of minValue [" + info.getMinValue().getClass().getName() + |
| 497 | "] does not match OpenType [" + openType.getClassName() + "]"; |
| 498 | throw new OpenDataException(msg); |
| 499 | } |
| 500 | if (info.hasMaxValue() && !openType.isValue(info.getMaxValue())) { |
| 501 | final String msg = |
| 502 | "Type of maxValue [" + info.getMaxValue().getClass().getName() + |
| 503 | "] does not match OpenType [" + openType.getClassName() + "]"; |
| 504 | throw new OpenDataException(msg); |
| 505 | } |
| 506 | |
| 507 | // Check that defaultValue is a legal value |
| 508 | // |
| 509 | if (info.hasDefaultValue()) { |
| 510 | Object defaultValue = info.getDefaultValue(); |
| 511 | if (info.hasLegalValues() && |
| 512 | !info.getLegalValues().contains(defaultValue)) { |
| 513 | throw new OpenDataException("defaultValue is not contained " + |
| 514 | "in legalValues"); |
| 515 | } |
| 516 | |
| 517 | // Check that minValue <= defaultValue <= maxValue |
| 518 | // |
| 519 | if (info.hasMinValue()) { |
| 520 | if (compare(info.getMinValue(), defaultValue) > 0) { |
| 521 | throw new OpenDataException("minValue cannot be greater " + |
| 522 | "than defaultValue"); |
| 523 | } |
| 524 | } |
| 525 | if (info.hasMaxValue()) { |
| 526 | if (compare(info.getMaxValue(), defaultValue) < 0) { |
| 527 | throw new OpenDataException("maxValue cannot be less " + |
| 528 | "than defaultValue"); |
| 529 | } |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | // Check legalValues |
| 534 | // |
| 535 | if (info.hasLegalValues()) { |
| 536 | // legalValues not supported for TabularType and arrays |
| 537 | if ((Object)openType instanceof TabularType || openType.isArray()) { |
| 538 | throw new OpenDataException("Legal values not supported " + |
| 539 | "for TabularType and arrays"); |
| 540 | } |
| 541 | // Check legalValues are valid with openType |
| 542 | for (Object v : info.getLegalValues()) { |
| 543 | if (!openType.isValue(v)) { |
| 544 | final String msg = |
| 545 | "Element of legalValues [" + v + |
| 546 | "] is not a valid value for the specified openType [" + |
| 547 | openType.toString() +"]"; |
| 548 | throw new OpenDataException(msg); |
| 549 | } |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | |
| 554 | // Check that, if both specified, minValue <= maxValue |
| 555 | // |
| 556 | if (info.hasMinValue() && info.hasMaxValue()) { |
| 557 | if (compare(info.getMinValue(), info.getMaxValue()) > 0) { |
| 558 | throw new OpenDataException("minValue cannot be greater " + |
| 559 | "than maxValue"); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | } |
| 564 | |
| 565 | @SuppressWarnings("unchecked") |
| 566 | static int compare(Object x, Object y) { |
| 567 | return ((Comparable) x).compareTo(y); |
| 568 | } |
| 569 | |
| 570 | static <T> Descriptor makeDescriptor(OpenType<T> openType, |
| 571 | T defaultValue, |
| 572 | T[] legalValues, |
| 573 | Comparable<T> minValue, |
| 574 | Comparable<T> maxValue) { |
| 575 | Map<String, Object> map = new HashMap<String, Object>(); |
| 576 | if (defaultValue != null) |
| 577 | map.put("defaultValue", defaultValue); |
| 578 | if (legalValues != null) { |
| 579 | Set<T> set = new HashSet<T>(); |
| 580 | for (T v : legalValues) |
| 581 | set.add(v); |
| 582 | set = Collections.unmodifiableSet(set); |
| 583 | map.put("legalValues", set); |
| 584 | } |
| 585 | if (minValue != null) |
| 586 | map.put("minValue", minValue); |
| 587 | if (maxValue != null) |
| 588 | map.put("maxValue", maxValue); |
| 589 | if (map.isEmpty()) { |
| 590 | return openType.getDescriptor(); |
| 591 | } else { |
| 592 | map.put("openType", openType); |
| 593 | return new ImmutableDescriptor(map); |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | static <T> Descriptor makeDescriptor(OpenType<T> openType, |
| 598 | T defaultValue, |
| 599 | Set<T> legalValues, |
| 600 | Comparable<T> minValue, |
| 601 | Comparable<T> maxValue) { |
| 602 | T[] legals; |
| 603 | if (legalValues == null) |
| 604 | legals = null; |
| 605 | else { |
| 606 | legals = cast(new Object[legalValues.size()]); |
| 607 | legalValues.toArray(legals); |
| 608 | } |
| 609 | return makeDescriptor(openType, defaultValue, legals, minValue, maxValue); |
| 610 | } |
| 611 | |
| 612 | |
| 613 | static <T> T valueFrom(Descriptor d, String name, OpenType<T> openType) { |
| 614 | Object x = d.getFieldValue(name); |
| 615 | if (x == null) |
| 616 | return null; |
| 617 | try { |
| 618 | return convertFrom(x, openType); |
| 619 | } catch (Exception e) { |
| 620 | final String msg = |
| 621 | "Cannot convert descriptor field " + name + " to " + |
| 622 | openType.getTypeName(); |
| 623 | throw EnvHelp.initCause(new IllegalArgumentException(msg), e); |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | static <T> Set<T> valuesFrom(Descriptor d, String name, |
| 628 | OpenType<T> openType) { |
| 629 | Object x = d.getFieldValue(name); |
| 630 | if (x == null) |
| 631 | return null; |
| 632 | Collection<?> coll; |
| 633 | if (x instanceof Set<?>) { |
| 634 | Set<?> set = (Set<?>) x; |
| 635 | boolean asis = true; |
| 636 | for (Object element : set) { |
| 637 | if (!openType.isValue(element)) { |
| 638 | asis = false; |
| 639 | break; |
| 640 | } |
| 641 | } |
| 642 | if (asis) |
| 643 | return cast(set); |
| 644 | coll = set; |
| 645 | } else if (x instanceof Object[]) { |
| 646 | coll = Arrays.asList((Object[]) x); |
| 647 | } else { |
| 648 | final String msg = |
| 649 | "Descriptor value for " + name + " must be a Set or " + |
| 650 | "an array: " + x.getClass().getName(); |
| 651 | throw new IllegalArgumentException(msg); |
| 652 | } |
| 653 | |
| 654 | Set<T> result = new HashSet<T>(); |
| 655 | for (Object element : coll) |
| 656 | result.add(convertFrom(element, openType)); |
| 657 | return result; |
| 658 | } |
| 659 | |
| 660 | static <T> Comparable comparableValueFrom(Descriptor d, String name, |
| 661 | OpenType<T> openType) { |
| 662 | T t = valueFrom(d, name, openType); |
| 663 | if (t == null || t instanceof Comparable<?>) |
| 664 | return (Comparable) t; |
| 665 | final String msg = |
| 666 | "Descriptor field " + name + " with value " + t + |
| 667 | " is not Comparable"; |
| 668 | throw new IllegalArgumentException(msg); |
| 669 | } |
| 670 | |
| 671 | private static <T> T convertFrom(Object x, OpenType<T> openType) { |
| 672 | if (openType.isValue(x)) { |
| 673 | T t = OpenMBeanAttributeInfoSupport.<T>cast(x); |
| 674 | return t; |
| 675 | } |
| 676 | return convertFromStrings(x, openType); |
| 677 | } |
| 678 | |
| 679 | private static <T> T convertFromStrings(Object x, OpenType<T> openType) { |
| 680 | if (openType instanceof ArrayType<?>) |
| 681 | return convertFromStringArray(x, openType); |
| 682 | else if (x instanceof String) |
| 683 | return convertFromString((String) x, openType); |
| 684 | final String msg = |
| 685 | "Cannot convert value " + x + " of type " + |
| 686 | x.getClass().getName() + " to type " + openType.getTypeName(); |
| 687 | throw new IllegalArgumentException(msg); |
| 688 | } |
| 689 | |
| 690 | private static <T> T convertFromString(String s, OpenType<T> openType) { |
| 691 | Class<T> c; |
| 692 | try { |
| 693 | c = cast(Class.forName(openType.getClassName())); |
| 694 | } catch (ClassNotFoundException e) { |
| 695 | throw new NoClassDefFoundError(e.toString()); // can't happen |
| 696 | } |
| 697 | |
| 698 | // Look for: public static T valueOf(String) |
| 699 | Method valueOf; |
| 700 | try { |
| 701 | valueOf = c.getMethod("valueOf", String.class); |
| 702 | if (!Modifier.isStatic(valueOf.getModifiers()) || |
| 703 | valueOf.getReturnType() != c) |
| 704 | valueOf = null; |
| 705 | } catch (NoSuchMethodException e) { |
| 706 | valueOf = null; |
| 707 | } |
| 708 | if (valueOf != null) { |
| 709 | try { |
| 710 | return c.cast(valueOf.invoke(null, s)); |
| 711 | } catch (Exception e) { |
| 712 | final String msg = |
| 713 | "Could not convert \"" + s + "\" using method: " + valueOf; |
| 714 | throw new IllegalArgumentException(msg); |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | // Look for: public T(String) |
| 719 | Constructor<T> con; |
| 720 | try { |
| 721 | con = c.getConstructor(String.class); |
| 722 | } catch (NoSuchMethodException e) { |
| 723 | con = null; |
| 724 | } |
| 725 | if (con != null) { |
| 726 | try { |
| 727 | return con.newInstance(s); |
| 728 | } catch (Exception e) { |
| 729 | final String msg = |
| 730 | "Could not convert \"" + s + "\" using constructor: " + con; |
| 731 | throw new IllegalArgumentException(msg); |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | throw new IllegalArgumentException("Don't know how to convert " + |
| 736 | "string to " + |
| 737 | openType.getTypeName()); |
| 738 | } |
| 739 | |
| 740 | |
| 741 | /* A Descriptor contained an array value encoded as Strings. The |
| 742 | Strings must be organized in an array corresponding to the desired |
| 743 | array. If the desired array has n dimensions, so must the String |
| 744 | array. We will convert element by element from String to desired |
| 745 | component type. */ |
| 746 | private static <T> T convertFromStringArray(Object x, |
| 747 | OpenType<T> openType) { |
| 748 | ArrayType<?> arrayType = (ArrayType<?>) openType; |
| 749 | OpenType<?> baseType = arrayType.getElementOpenType(); |
| 750 | int dim = arrayType.getDimension(); |
| 751 | String squareBrackets = "["; |
| 752 | for (int i = 1; i < dim; i++) |
| 753 | squareBrackets += "["; |
| 754 | Class<?> stringArrayClass; |
| 755 | Class<?> targetArrayClass; |
| 756 | try { |
| 757 | stringArrayClass = |
| 758 | Class.forName(squareBrackets + "Ljava.lang.String;"); |
| 759 | targetArrayClass = |
| 760 | Class.forName(squareBrackets + "L" + baseType.getClassName() + |
| 761 | ";"); |
| 762 | } catch (ClassNotFoundException e) { |
| 763 | throw new NoClassDefFoundError(e.toString()); // can't happen |
| 764 | } |
| 765 | if (!stringArrayClass.isInstance(x)) { |
| 766 | final String msg = |
| 767 | "Value for " + dim + "-dimensional array of " + |
| 768 | baseType.getTypeName() + " must be same type or a String " + |
| 769 | "array with same dimensions"; |
| 770 | throw new IllegalArgumentException(msg); |
| 771 | } |
| 772 | Class<?> targetComponentClass = targetArrayClass.getComponentType(); |
| 773 | OpenType<?> componentOpenType; |
| 774 | if (dim == 1) |
| 775 | componentOpenType = baseType; |
| 776 | else { |
| 777 | try { |
| 778 | componentOpenType = new ArrayType<T>(dim - 1, baseType); |
| 779 | } catch (OpenDataException e) { |
| 780 | throw new IllegalArgumentException(e.getMessage(), e); |
| 781 | // can't happen |
| 782 | } |
| 783 | } |
| 784 | int n = Array.getLength(x); |
| 785 | Object[] targetArray = (Object[]) |
| 786 | Array.newInstance(targetArrayClass.getComponentType(), n); |
| 787 | for (int i = 0; i < n; i++) { |
| 788 | Object stringish = Array.get(x, i); // String or String[] etc |
| 789 | Object converted = |
| 790 | convertFromStrings(stringish, componentOpenType); |
| 791 | Array.set(targetArray, i, converted); |
| 792 | } |
| 793 | return OpenMBeanAttributeInfoSupport.<T>cast(targetArray); |
| 794 | } |
| 795 | |
| 796 | @SuppressWarnings("unchecked") |
| 797 | static <T> T cast(Object x) { |
| 798 | return (T) x; |
| 799 | } |
| 800 | |
| 801 | /** |
| 802 | * Returns the open type for the values of the attribute described |
| 803 | * by this {@code OpenMBeanAttributeInfoSupport} instance. |
| 804 | */ |
| 805 | public OpenType<?> getOpenType() { |
| 806 | return openType; |
| 807 | } |
| 808 | |
| 809 | /** |
| 810 | * Returns the default value for the attribute described by this |
| 811 | * {@code OpenMBeanAttributeInfoSupport} instance, if specified, |
| 812 | * or {@code null} otherwise. |
| 813 | */ |
| 814 | public Object getDefaultValue() { |
| 815 | |
| 816 | // Special case for ArrayType and TabularType |
| 817 | // [JF] TODO: clone it so that it cannot be altered, |
| 818 | // [JF] TODO: if we decide to support defaultValue as an array itself. |
| 819 | // [JF] As of today (oct 2000) it is not supported so |
| 820 | // defaultValue is null for arrays. Nothing to do. |
| 821 | |
| 822 | return defaultValue; |
| 823 | } |
| 824 | |
| 825 | /** |
| 826 | * Returns an unmodifiable Set of legal values for the attribute |
| 827 | * described by this {@code OpenMBeanAttributeInfoSupport} |
| 828 | * instance, if specified, or {@code null} otherwise. |
| 829 | */ |
| 830 | public Set<?> getLegalValues() { |
| 831 | |
| 832 | // Special case for ArrayType and TabularType |
| 833 | // [JF] TODO: clone values so that they cannot be altered, |
| 834 | // [JF] TODO: if we decide to support LegalValues as an array itself. |
| 835 | // [JF] As of today (oct 2000) it is not supported so |
| 836 | // legalValues is null for arrays. Nothing to do. |
| 837 | |
| 838 | // Returns our legalValues Set (set was constructed unmodifiable) |
| 839 | return (legalValues); |
| 840 | } |
| 841 | |
| 842 | /** |
| 843 | * Returns the minimal value for the attribute described by this |
| 844 | * {@code OpenMBeanAttributeInfoSupport} instance, if specified, |
| 845 | * or {@code null} otherwise. |
| 846 | */ |
| 847 | public Comparable<?> getMinValue() { |
| 848 | |
| 849 | // Note: only comparable values have a minValue, |
| 850 | // so that's not the case of arrays and tabulars (always null). |
| 851 | |
| 852 | return minValue; |
| 853 | } |
| 854 | |
| 855 | /** |
| 856 | * Returns the maximal value for the attribute described by this |
| 857 | * {@code OpenMBeanAttributeInfoSupport} instance, if specified, |
| 858 | * or {@code null} otherwise. |
| 859 | */ |
| 860 | public Comparable<?> getMaxValue() { |
| 861 | |
| 862 | // Note: only comparable values have a maxValue, |
| 863 | // so that's not the case of arrays and tabulars (always null). |
| 864 | |
| 865 | return maxValue; |
| 866 | } |
| 867 | |
| 868 | /** |
| 869 | * Returns {@code true} if this {@code |
| 870 | * OpenMBeanAttributeInfoSupport} instance specifies a non-null |
| 871 | * default value for the described attribute, {@code false} |
| 872 | * otherwise. |
| 873 | */ |
| 874 | public boolean hasDefaultValue() { |
| 875 | |
| 876 | return (defaultValue != null); |
| 877 | } |
| 878 | |
| 879 | /** |
| 880 | * Returns {@code true} if this {@code |
| 881 | * OpenMBeanAttributeInfoSupport} instance specifies a non-null |
| 882 | * set of legal values for the described attribute, {@code false} |
| 883 | * otherwise. |
| 884 | */ |
| 885 | public boolean hasLegalValues() { |
| 886 | |
| 887 | return (legalValues != null); |
| 888 | } |
| 889 | |
| 890 | /** |
| 891 | * Returns {@code true} if this {@code |
| 892 | * OpenMBeanAttributeInfoSupport} instance specifies a non-null |
| 893 | * minimal value for the described attribute, {@code false} |
| 894 | * otherwise. |
| 895 | */ |
| 896 | public boolean hasMinValue() { |
| 897 | |
| 898 | return (minValue != null); |
| 899 | } |
| 900 | |
| 901 | /** |
| 902 | * Returns {@code true} if this {@code |
| 903 | * OpenMBeanAttributeInfoSupport} instance specifies a non-null |
| 904 | * maximal value for the described attribute, {@code false} |
| 905 | * otherwise. |
| 906 | */ |
| 907 | public boolean hasMaxValue() { |
| 908 | |
| 909 | return (maxValue != null); |
| 910 | } |
| 911 | |
| 912 | |
| 913 | /** |
| 914 | * Tests whether {@code obj} is a valid value for the attribute |
| 915 | * described by this {@code OpenMBeanAttributeInfoSupport} |
| 916 | * instance. |
| 917 | * |
| 918 | * @param obj the object to be tested. |
| 919 | * |
| 920 | * @return {@code true} if {@code obj} is a valid value for |
| 921 | * the parameter described by this {@code |
| 922 | * OpenMBeanAttributeInfoSupport} instance, {@code false} |
| 923 | * otherwise. |
| 924 | */ |
| 925 | public boolean isValue(Object obj) { |
| 926 | return isValue(this, obj); |
| 927 | } |
| 928 | |
| 929 | @SuppressWarnings("unchecked") // cast to Comparable |
| 930 | static boolean isValue(OpenMBeanParameterInfo info, Object obj) { |
| 931 | if (info.hasDefaultValue() && obj == null) |
| 932 | return true; |
| 933 | return |
| 934 | info.getOpenType().isValue(obj) && |
| 935 | (!info.hasLegalValues() || info.getLegalValues().contains(obj)) && |
| 936 | (!info.hasMinValue() || |
| 937 | ((Comparable) info.getMinValue()).compareTo(obj) <= 0) && |
| 938 | (!info.hasMaxValue() || |
| 939 | ((Comparable) info.getMaxValue()).compareTo(obj) >= 0); |
| 940 | } |
| 941 | |
| 942 | /* *** Commodity methods from java.lang.Object *** */ |
| 943 | |
| 944 | |
| 945 | /** |
| 946 | * Compares the specified {@code obj} parameter with this {@code |
| 947 | * OpenMBeanAttributeInfoSupport} instance for equality. |
| 948 | * <p> |
| 949 | * Returns {@code true} if and only if all of the following statements are true: |
| 950 | * <ul> |
| 951 | * <li>{@code obj} is non null,</li> |
| 952 | * <li>{@code obj} also implements the {@code OpenMBeanAttributeInfo} interface,</li> |
| 953 | * <li>their names are equal</li> |
| 954 | * <li>their open types are equal</li> |
| 955 | * <li>their access properties (isReadable, isWritable and isIs) are equal</li> |
| 956 | * <li>their default, min, max and legal values are equal.</li> |
| 957 | * </ul> |
| 958 | * This ensures that this {@code equals} method works properly for |
| 959 | * {@code obj} parameters which are different implementations of |
| 960 | * the {@code OpenMBeanAttributeInfo} interface. |
| 961 | * |
| 962 | * <p>If {@code obj} also implements {@link DescriptorRead}, then its |
| 963 | * {@link DescriptorRead#getDescriptor() getDescriptor()} method must |
| 964 | * also return the same value as for this object.</p> |
| 965 | * |
| 966 | * @param obj the object to be compared for equality with this |
| 967 | * {@code OpenMBeanAttributeInfoSupport} instance. |
| 968 | * |
| 969 | * @return {@code true} if the specified object is equal to this |
| 970 | * {@code OpenMBeanAttributeInfoSupport} instance. |
| 971 | */ |
| 972 | public boolean equals(Object obj) { |
| 973 | if (!(obj instanceof OpenMBeanAttributeInfo)) |
| 974 | return false; |
| 975 | |
| 976 | OpenMBeanAttributeInfo other = (OpenMBeanAttributeInfo) obj; |
| 977 | |
| 978 | return |
| 979 | this.isReadable() == other.isReadable() && |
| 980 | this.isWritable() == other.isWritable() && |
| 981 | this.isIs() == other.isIs() && |
| 982 | equal(this, other); |
| 983 | } |
| 984 | |
| 985 | static boolean equal(OpenMBeanParameterInfo x1, OpenMBeanParameterInfo x2) { |
| 986 | if (x1 instanceof DescriptorRead) { |
| 987 | if (!(x2 instanceof DescriptorRead)) |
| 988 | return false; |
| 989 | Descriptor d1 = ((DescriptorRead) x1).getDescriptor(); |
| 990 | Descriptor d2 = ((DescriptorRead) x2).getDescriptor(); |
| 991 | if (!d1.equals(d2)) |
| 992 | return false; |
| 993 | } else if (x2 instanceof DescriptorRead) |
| 994 | return false; |
| 995 | |
| 996 | return |
| 997 | x1.getName().equals(x2.getName()) && |
| 998 | x1.getOpenType().equals(x2.getOpenType()) && |
| 999 | (x1.hasDefaultValue() ? |
| 1000 | x1.getDefaultValue().equals(x2.getDefaultValue()) : |
| 1001 | !x2.hasDefaultValue()) && |
| 1002 | (x1.hasMinValue() ? |
| 1003 | x1.getMinValue().equals(x2.getMinValue()) : |
| 1004 | !x2.hasMinValue()) && |
| 1005 | (x1.hasMaxValue() ? |
| 1006 | x1.getMaxValue().equals(x2.getMaxValue()) : |
| 1007 | !x2.hasMaxValue()) && |
| 1008 | (x1.hasLegalValues() ? |
| 1009 | x1.getLegalValues().equals(x2.getLegalValues()) : |
| 1010 | !x2.hasLegalValues()); |
| 1011 | } |
| 1012 | |
| 1013 | /** |
| 1014 | * <p>Returns the hash code value for this {@code |
| 1015 | * OpenMBeanAttributeInfoSupport} instance.</p> |
| 1016 | * |
| 1017 | * <p>The hash code of an {@code OpenMBeanAttributeInfoSupport} |
| 1018 | * instance is the sum of the hash codes of all elements of |
| 1019 | * information used in {@code equals} comparisons (ie: its name, |
| 1020 | * its <i>open type</i>, its default, min, max and legal |
| 1021 | * values, and its Descriptor). |
| 1022 | * |
| 1023 | * <p>This ensures that {@code t1.equals(t2)} implies that {@code |
| 1024 | * t1.hashCode()==t2.hashCode()} for any two {@code |
| 1025 | * OpenMBeanAttributeInfoSupport} instances {@code t1} and {@code |
| 1026 | * t2}, as required by the general contract of the method {@link |
| 1027 | * Object#hashCode() Object.hashCode()}. |
| 1028 | * |
| 1029 | * <p>However, note that another instance of a class implementing |
| 1030 | * the {@code OpenMBeanAttributeInfo} interface may be equal to |
| 1031 | * this {@code OpenMBeanAttributeInfoSupport} instance as defined |
| 1032 | * by {@link #equals(java.lang.Object)}, but may have a different |
| 1033 | * hash code if it is calculated differently. |
| 1034 | * |
| 1035 | * <p>As {@code OpenMBeanAttributeInfoSupport} instances are |
| 1036 | * immutable, the hash code for this instance is calculated once, |
| 1037 | * on the first call to {@code hashCode}, and then the same value |
| 1038 | * is returned for subsequent calls. |
| 1039 | * |
| 1040 | * @return the hash code value for this {@code |
| 1041 | * OpenMBeanAttributeInfoSupport} instance |
| 1042 | */ |
| 1043 | public int hashCode() { |
| 1044 | |
| 1045 | // Calculate the hash code value if it has not yet been done |
| 1046 | // (ie 1st call to hashCode()) |
| 1047 | // |
| 1048 | if (myHashCode == null) |
| 1049 | myHashCode = hashCode(this); |
| 1050 | |
| 1051 | // return always the same hash code for this instance (immutable) |
| 1052 | // |
| 1053 | return myHashCode.intValue(); |
| 1054 | } |
| 1055 | |
| 1056 | static int hashCode(OpenMBeanParameterInfo info) { |
| 1057 | int value = 0; |
| 1058 | value += info.getName().hashCode(); |
| 1059 | value += info.getOpenType().hashCode(); |
| 1060 | if (info.hasDefaultValue()) |
| 1061 | value += info.getDefaultValue().hashCode(); |
| 1062 | if (info.hasMinValue()) |
| 1063 | value += info.getMinValue().hashCode(); |
| 1064 | if (info.hasMaxValue()) |
| 1065 | value += info.getMaxValue().hashCode(); |
| 1066 | if (info.hasLegalValues()) |
| 1067 | value += info.getLegalValues().hashCode(); |
| 1068 | if (info instanceof DescriptorRead) |
| 1069 | value += ((DescriptorRead) info).getDescriptor().hashCode(); |
| 1070 | return value; |
| 1071 | } |
| 1072 | |
| 1073 | /** |
| 1074 | * Returns a string representation of this |
| 1075 | * {@code OpenMBeanAttributeInfoSupport} instance. |
| 1076 | * <p> |
| 1077 | * The string representation consists of the name of this class (i.e. |
| 1078 | * {@code javax.management.openmbean.OpenMBeanAttributeInfoSupport}), |
| 1079 | * the string representation of the name and open type of the |
| 1080 | * described parameter, the string representation of its |
| 1081 | * default, min, max and legal values and the string |
| 1082 | * representation of its descriptor. |
| 1083 | * |
| 1084 | * <p>As {@code OpenMBeanAttributeInfoSupport} instances are |
| 1085 | * immutable, the string representation for this instance is |
| 1086 | * calculated once, on the first call to {@code toString}, and |
| 1087 | * then the same value is returned for subsequent calls. |
| 1088 | * |
| 1089 | * @return a string representation of this |
| 1090 | * {@code OpenMBeanAttributeInfoSupport} instance. |
| 1091 | */ |
| 1092 | public String toString() { |
| 1093 | |
| 1094 | // Calculate the string value if it has not yet been done |
| 1095 | // (ie 1st call to toString()) |
| 1096 | // |
| 1097 | if (myToString == null) |
| 1098 | myToString = toString(this); |
| 1099 | |
| 1100 | // return always the same string representation for this |
| 1101 | // instance (immutable) |
| 1102 | // |
| 1103 | return myToString; |
| 1104 | } |
| 1105 | |
| 1106 | static String toString(OpenMBeanParameterInfo info) { |
| 1107 | Descriptor d = (info instanceof DescriptorRead) ? |
| 1108 | ((DescriptorRead) info).getDescriptor() : null; |
| 1109 | return |
| 1110 | info.getClass().getName() + |
| 1111 | "(name=" + info.getName() + |
| 1112 | ",openType=" + info.getOpenType() + |
| 1113 | ",default=" + info.getDefaultValue() + |
| 1114 | ",minValue=" + info.getMinValue() + |
| 1115 | ",maxValue=" + info.getMaxValue() + |
| 1116 | ",legalValues=" + info.getLegalValues() + |
| 1117 | ((d == null) ? "" : ",descriptor=" + d) + |
| 1118 | ")"; |
| 1119 | } |
| 1120 | } |