Showing the changes to java/pkg/javax/management/Query.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,655 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2008, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package javax.management; | ||
| 27 | |||
| 28 | |||
| 29 | /** | ||
| 30 | * <p>Constructs query object constraints.</p> | ||
| 31 | * | ||
| 32 | * <p>The MBean Server can be queried for MBeans that meet a particular | ||
| 33 | * condition, using its {@link MBeanServer#queryNames queryNames} or | ||
| 34 | * {@link MBeanServer#queryMBeans queryMBeans} method. The {@link QueryExp} | ||
| 35 | * parameter to the method can be any implementation of the interface | ||
| 36 | * {@code QueryExp}, but it is usually best to obtain the {@code QueryExp} | ||
| 37 | * value by calling the static methods in this class. This is particularly | ||
| 38 | * true when querying a remote MBean Server: a custom implementation of the | ||
| 39 | * {@code QueryExp} interface might not be present in the remote MBean Server, | ||
| 40 | * but the methods in this class return only standard classes that are | ||
| 41 | * part of the JMX implementation.</p> | ||
| 42 | * | ||
| 43 | * <p>As an example, suppose you wanted to find all MBeans where the {@code | ||
| 44 | * Enabled} attribute is {@code true} and the {@code Owner} attribute is {@code | ||
| 45 | * "Duke"}. Here is how you could construct the appropriate {@code QueryExp} by | ||
| 46 | * chaining together method calls:</p> | ||
| 47 | * | ||
| 48 | * <pre> | ||
| 49 | * QueryExp query = | ||
| 50 | * Query.and(Query.eq(Query.attr("Enabled"), Query.value(true)), | ||
| 51 | * Query.eq(Query.attr("Owner"), Query.value("Duke"))); | ||
| 52 | * </pre> | ||
| 53 | * | ||
| 54 | * @since 1.5 | ||
| 55 | */ | ||
| 56 | public class Query extends Object { | ||
| 57 | |||
| 58 | |||
| 59 | /** | ||
| 60 | * A code representing the {@link Query#gt} query. This is chiefly | ||
| 61 | * of interest for the serialized form of queries. | ||
| 62 | */ | ||
| 63 | public static final int GT = 0; | ||
| 64 | |||
| 65 | /** | ||
| 66 | * A code representing the {@link Query#lt} query. This is chiefly | ||
| 67 | * of interest for the serialized form of queries. | ||
| 68 | */ | ||
| 69 | public static final int LT = 1; | ||
| 70 | |||
| 71 | /** | ||
| 72 | * A code representing the {@link Query#geq} query. This is chiefly | ||
| 73 | * of interest for the serialized form of queries. | ||
| 74 | */ | ||
| 75 | public static final int GE = 2; | ||
| 76 | |||
| 77 | /** | ||
| 78 | * A code representing the {@link Query#leq} query. This is chiefly | ||
| 79 | * of interest for the serialized form of queries. | ||
| 80 | */ | ||
| 81 | public static final int LE = 3; | ||
| 82 | |||
| 83 | /** | ||
| 84 | * A code representing the {@link Query#eq} query. This is chiefly | ||
| 85 | * of interest for the serialized form of queries. | ||
| 86 | */ | ||
| 87 | public static final int EQ = 4; | ||
| 88 | |||
| 89 | |||
| 90 | /** | ||
| 91 | * A code representing the {@link Query#plus} expression. This | ||
| 92 | * is chiefly of interest for the serialized form of queries. | ||
| 93 | */ | ||
| 94 | public static final int PLUS = 0; | ||
| 95 | |||
| 96 | /** | ||
| 97 | * A code representing the {@link Query#minus} expression. This | ||
| 98 | * is chiefly of interest for the serialized form of queries. | ||
| 99 | */ | ||
| 100 | public static final int MINUS = 1; | ||
| 101 | |||
| 102 | /** | ||
| 103 | * A code representing the {@link Query#times} expression. This | ||
| 104 | * is chiefly of interest for the serialized form of queries. | ||
| 105 | */ | ||
| 106 | public static final int TIMES = 2; | ||
| 107 | |||
| 108 | /** | ||
| 109 | * A code representing the {@link Query#div} expression. This is | ||
| 110 | * chiefly of interest for the serialized form of queries. | ||
| 111 | */ | ||
| 112 | public static final int DIV = 3; | ||
| 113 | |||
| 114 | |||
| 115 | /** | ||
| 116 | * Basic constructor. | ||
| 117 | */ | ||
| 118 | public Query() { | ||
| 119 | } | ||
| 120 | |||
| 121 | |||
| 122 | /** | ||
| 123 | * Returns a query expression that is the conjunction of two other query | ||
| 124 | * expressions. | ||
| 125 | * | ||
| 126 | * @param q1 A query expression. | ||
| 127 | * @param q2 Another query expression. | ||
| 128 | * | ||
| 129 | * @return The conjunction of the two arguments. The returned object | ||
| 130 | * will be serialized as an instance of the non-public class {@link | ||
| 131 | * <a href="../../serialized-form.html#javax.management.AndQueryExp"> | ||
| 132 | * javax.management.AndQueryExp</a>}. | ||
| 133 | */ | ||
| 134 | public static QueryExp and(QueryExp q1, QueryExp q2) { | ||
| 135 | return new AndQueryExp(q1, q2); | ||
| 136 | } | ||
| 137 | |||
| 138 | /** | ||
| 139 | * Returns a query expression that is the disjunction of two other query | ||
| 140 | * expressions. | ||
| 141 | * | ||
| 142 | * @param q1 A query expression. | ||
| 143 | * @param q2 Another query expression. | ||
| 144 | * | ||
| 145 | * @return The disjunction of the two arguments. The returned object | ||
| 146 | * will be serialized as an instance of the non-public class {@link | ||
| 147 | * <a href="../../serialized-form.html#javax.management.OrQueryExp"> | ||
| 148 | * javax.management.OrQueryExp</a>}. | ||
| 149 | */ | ||
| 150 | public static QueryExp or(QueryExp q1, QueryExp q2) { | ||
| 151 | return new OrQueryExp(q1, q2); | ||
| 152 | } | ||
| 153 | |||
| 154 | /** | ||
| 155 | * Returns a query expression that represents a "greater than" constraint on | ||
| 156 | * two values. | ||
| 157 | * | ||
| 158 | * @param v1 A value expression. | ||
| 159 | * @param v2 Another value expression. | ||
| 160 | * | ||
| 161 | * @return A "greater than" constraint on the arguments. The | ||
| 162 | * returned object will be serialized as an instance of the | ||
| 163 | * non-public class {@link <a | ||
| 164 | * href="../../serialized-form.html#javax.management.BinaryRelQueryExp"> | ||
| 165 | * javax.management.BinaryRelQueryExp</a>} with a {@code relOp} equal | ||
| 166 | * to {@link #GT}. | ||
| 167 | */ | ||
| 168 | public static QueryExp gt(ValueExp v1, ValueExp v2) { | ||
| 169 | return new BinaryRelQueryExp(GT, v1, v2); | ||
| 170 | } | ||
| 171 | |||
| 172 | /** | ||
| 173 | * Returns a query expression that represents a "greater than or equal | ||
| 174 | * to" constraint on two values. | ||
| 175 | * | ||
| 176 | * @param v1 A value expression. | ||
| 177 | * @param v2 Another value expression. | ||
| 178 | * | ||
| 179 | * @return A "greater than or equal to" constraint on the | ||
| 180 | * arguments. The returned object will be serialized as an | ||
| 181 | * instance of the non-public class {@link <a | ||
| 182 | * href="../../serialized-form.html#javax.management.BinaryRelQueryExp"> | ||
| 183 | * javax.management.BinaryRelQueryExp</a>} with a {@code relOp} equal | ||
| 184 | * to {@link #GE}. | ||
| 185 | */ | ||
| 186 | public static QueryExp geq(ValueExp v1, ValueExp v2) { | ||
| 187 | return new BinaryRelQueryExp(GE, v1, v2); | ||
| 188 | } | ||
| 189 | |||
| 190 | /** | ||
| 191 | * Returns a query expression that represents a "less than or equal to" | ||
| 192 | * constraint on two values. | ||
| 193 | * | ||
| 194 | * @param v1 A value expression. | ||
| 195 | * @param v2 Another value expression. | ||
| 196 | * | ||
| 197 | * @return A "less than or equal to" constraint on the arguments. | ||
| 198 | * The returned object will be serialized as an instance of the | ||
| 199 | * non-public class {@link <a | ||
| 200 | * href="../../serialized-form.html#javax.management.BinaryRelQueryExp"> | ||
| 201 | * javax.management.BinaryRelQueryExp</a>} with a {@code relOp} equal | ||
| 202 | * to {@link #LE}. | ||
| 203 | */ | ||
| 204 | public static QueryExp leq(ValueExp v1, ValueExp v2) { | ||
| 205 | return new BinaryRelQueryExp(LE, v1, v2); | ||
| 206 | } | ||
| 207 | |||
| 208 | /** | ||
| 209 | * Returns a query expression that represents a "less than" constraint on | ||
| 210 | * two values. | ||
| 211 | * | ||
| 212 | * @param v1 A value expression. | ||
| 213 | * @param v2 Another value expression. | ||
| 214 | * | ||
| 215 | * @return A "less than" constraint on the arguments. The | ||
| 216 | * returned object will be serialized as an instance of the | ||
| 217 | * non-public class {@link <a | ||
| 218 | * href="../../serialized-form.html#javax.management.BinaryRelQueryExp"> | ||
| 219 | * javax.management.BinaryRelQueryExp</a>} with a {@code relOp} equal | ||
| 220 | * to {@link #LT}. | ||
| 221 | */ | ||
| 222 | public static QueryExp lt(ValueExp v1, ValueExp v2) { | ||
| 223 | return new BinaryRelQueryExp(LT, v1, v2); | ||
| 224 | } | ||
| 225 | |||
| 226 | /** | ||
| 227 | * Returns a query expression that represents an equality constraint on | ||
| 228 | * two values. | ||
| 229 | * | ||
| 230 | * @param v1 A value expression. | ||
| 231 | * @param v2 Another value expression. | ||
| 232 | * | ||
| 233 | * @return A "equal to" constraint on the arguments. The | ||
| 234 | * returned object will be serialized as an instance of the | ||
| 235 | * non-public class {@link <a | ||
| 236 | * href="../../serialized-form.html#javax.management.BinaryRelQueryExp"> | ||
| 237 | * javax.management.BinaryRelQueryExp</a>} with a {@code relOp} equal | ||
| 238 | * to {@link #EQ}. | ||
| 239 | */ | ||
| 240 | public static QueryExp eq(ValueExp v1, ValueExp v2) { | ||
| 241 | return new BinaryRelQueryExp(EQ, v1, v2); | ||
| 242 | } | ||
| 243 | |||
| 244 | /** | ||
| 245 | * Returns a query expression that represents the constraint that one | ||
| 246 | * value is between two other values. | ||
| 247 | * | ||
| 248 | * @param v1 A value expression that is "between" v2 and v3. | ||
| 249 | * @param v2 Value expression that represents a boundary of the constraint. | ||
| 250 | * @param v3 Value expression that represents a boundary of the constraint. | ||
| 251 | * | ||
| 252 | * @return The constraint that v1 lies between v2 and v3. The | ||
| 253 | * returned object will be serialized as an instance of the | ||
| 254 | * non-public class {@link <a | ||
| 255 | * href="../../serialized-form.html#javax.management.BetweenQueryExp"> | ||
| 256 | * javax.management.BetweenQueryExp</a>}. | ||
| 257 | */ | ||
| 258 | public static QueryExp between(ValueExp v1, ValueExp v2, ValueExp v3) { | ||
| 259 | return new BetweenQueryExp(v1, v2, v3); | ||
| 260 | } | ||
| 261 | |||
| 262 | /** | ||
| 263 | * Returns a query expression that represents a matching constraint on | ||
| 264 | * a string argument. The matching syntax is consistent with file globbing: | ||
| 265 | * supports "<code>?</code>", "<code>*</code>", "<code>[</code>", | ||
| 266 | * each of which may be escaped with "<code>\</code>"; | ||
| 267 | * character classes may use "<code>!</code>" for negation and | ||
| 268 | * "<code>-</code>" for range. | ||
| 269 | * (<code>*</code> for any character sequence, | ||
| 270 | * <code>?</code> for a single arbitrary character, | ||
| 271 | * <code>[...]</code> for a character sequence). | ||
| 272 | * For example: <code>a*b?c</code> would match a string starting | ||
| 273 | * with the character <code>a</code>, followed | ||
| 274 | * by any number of characters, followed by a <code>b</code>, | ||
| 275 | * any single character, and a <code>c</code>. | ||
| 276 | * | ||
| 277 | * @param a An attribute expression | ||
| 278 | * @param s A string value expression representing a matching constraint | ||
| 279 | * | ||
| 280 | * @return A query expression that represents the matching | ||
| 281 | * constraint on the string argument. The returned object will | ||
| 282 | * be serialized as an instance of the non-public class {@link <a | ||
| 283 | * href="../../serialized-form.html#javax.management.MatchQueryExp"> | ||
| 284 | * javax.management.MatchQueryExp</a>}. | ||
| 285 | */ | ||
| 286 | public static QueryExp match(AttributeValueExp a, StringValueExp s) { | ||
| 287 | return new MatchQueryExp(a, s); | ||
| 288 | } | ||
| 289 | |||
| 290 | /** | ||
| 291 | * <p>Returns a new attribute expression. See {@link AttributeValueExp} | ||
| 292 | * for a detailed description of the semantics of the expression.</p> | ||
| 293 | * | ||
| 294 | * <p>Evaluating this expression for a given | ||
| 295 | * <code>objectName</code> includes performing {@link | ||
| 296 | * MBeanServer#getAttribute MBeanServer.getAttribute(objectName, | ||
| 297 | * name)}.</p> | ||
| 298 | * | ||
| 299 | * @param name The name of the attribute. | ||
| 300 | * | ||
| 301 | * @return An attribute expression for the attribute named {@code name}. | ||
| 302 | */ | ||
| 303 | public static AttributeValueExp attr(String name) { | ||
| 304 | return new AttributeValueExp(name); | ||
| 305 | } | ||
| 306 | |||
| 307 | /** | ||
| 308 | * <p>Returns a new qualified attribute expression.</p> | ||
| 309 | * | ||
| 310 | * <p>Evaluating this expression for a given | ||
| 311 | * <code>objectName</code> includes performing {@link | ||
| 312 | * MBeanServer#getObjectInstance | ||
| 313 | * MBeanServer.getObjectInstance(objectName)} and {@link | ||
| 314 | * MBeanServer#getAttribute MBeanServer.getAttribute(objectName, | ||
| 315 | * name)}.</p> | ||
| 316 | * | ||
| 317 | * @param className The name of the class possessing the attribute. | ||
| 318 | * @param name The name of the attribute. | ||
| 319 | * | ||
| 320 | * @return An attribute expression for the attribute named name. | ||
| 321 | * The returned object will be serialized as an instance of the | ||
| 322 | * non-public class {@link <a | ||
| 323 | * href="../../serialized-form.html#javax.management.QualifiedAttributeValueExp"> | ||
| 324 | * javax.management.QualifiedAttributeValueExp</a>}. | ||
| 325 | */ | ||
| 326 | public static AttributeValueExp attr(String className, String name) { | ||
| 327 | return new QualifiedAttributeValueExp(className, name); | ||
| 328 | } | ||
| 329 | |||
| 330 | /** | ||
| 331 | * <p>Returns a new class attribute expression which can be used in any | ||
| 332 | * Query call that expects a ValueExp.</p> | ||
| 333 | * | ||
| 334 | * <p>Evaluating this expression for a given | ||
| 335 | * <code>objectName</code> includes performing {@link | ||
| 336 | * MBeanServer#getObjectInstance | ||
| 337 | * MBeanServer.getObjectInstance(objectName)}.</p> | ||
| 338 | * | ||
| 339 | * @return A class attribute expression. The returned object | ||
| 340 | * will be serialized as an instance of the non-public class | ||
| 341 | * {@link <a | ||
| 342 | * href="../../serialized-form.html#javax.management.ClassAttributeValueExp"> | ||
| 343 | * javax.management.ClassAttributeValueExp</a>}. | ||
| 344 | */ | ||
| 345 | public static AttributeValueExp classattr() { | ||
| 346 | return new ClassAttributeValueExp(); | ||
| 347 | } | ||
| 348 | |||
| 349 | /** | ||
| 350 | * Returns a constraint that is the negation of its argument. | ||
| 351 | * | ||
| 352 | * @param queryExp The constraint to negate. | ||
| 353 | * | ||
| 354 | * @return A negated constraint. The returned object will be | ||
| 355 | * serialized as an instance of the non-public class {@link <a | ||
| 356 | * href="../../serialized-form.html#javax.management.NotQueryExp"> | ||
| 357 | * javax.management.NotQueryExp</a>}. | ||
| 358 | */ | ||
| 359 | public static QueryExp not(QueryExp queryExp) { | ||
| 360 | return new NotQueryExp(queryExp); | ||
| 361 | } | ||
| 362 | |||
| 363 | /** | ||
| 364 | * Returns an expression constraining a value to be one of an explicit list. | ||
| 365 | * | ||
| 366 | * @param val A value to be constrained. | ||
| 367 | * @param valueList An array of ValueExps. | ||
| 368 | * | ||
| 369 | * @return A QueryExp that represents the constraint. The | ||
| 370 | * returned object will be serialized as an instance of the | ||
| 371 | * non-public class {@link <a | ||
| 372 | * href="../../serialized-form.html#javax.management.InQueryExp"> | ||
| 373 | * javax.management.InQueryExp</a>}. | ||
| 374 | */ | ||
| 375 | public static QueryExp in(ValueExp val, ValueExp valueList[]) { | ||
| 376 | return new InQueryExp(val, valueList); | ||
| 377 | } | ||
| 378 | |||
| 379 | /** | ||
| 380 | * Returns a new string expression. | ||
| 381 | * | ||
| 382 | * @param val The string value. | ||
| 383 | * | ||
| 384 | * @return A ValueExp object containing the string argument. | ||
| 385 | */ | ||
| 386 | public static StringValueExp value(String val) { | ||
| 387 | return new StringValueExp(val); | ||
| 388 | } | ||
| 389 | |||
| 390 | /** | ||
| 391 | * Returns a numeric value expression that can be used in any Query call | ||
| 392 | * that expects a ValueExp. | ||
| 393 | * | ||
| 394 | * @param val An instance of Number. | ||
| 395 | * | ||
| 396 | * @return A ValueExp object containing the argument. The | ||
| 397 | * returned object will be serialized as an instance of the | ||
| 398 | * non-public class {@link <a | ||
| 399 | * href="../../serialized-form.html#javax.management.NumericValueExp"> | ||
| 400 | * javax.management.NumericValueExp</a>}. | ||
| 401 | */ | ||
| 402 | public static ValueExp value(Number val) { | ||
| 403 | return new NumericValueExp(val); | ||
| 404 | } | ||
| 405 | |||
| 406 | /** | ||
| 407 | * Returns a numeric value expression that can be used in any Query call | ||
| 408 | * that expects a ValueExp. | ||
| 409 | * | ||
| 410 | * @param val An int value. | ||
| 411 | * | ||
| 412 | * @return A ValueExp object containing the argument. The | ||
| 413 | * returned object will be serialized as an instance of the | ||
| 414 | * non-public class {@link <a | ||
| 415 | * href="../../serialized-form.html#javax.management.NumericValueExp"> | ||
| 416 | * javax.management.NumericValueExp</a>}. | ||
| 417 | */ | ||
| 418 | public static ValueExp value(int val) { | ||
| 419 | return new NumericValueExp((long) val); | ||
| 420 | } | ||
| 421 | |||
| 422 | /** | ||
| 423 | * Returns a numeric value expression that can be used in any Query call | ||
| 424 | * that expects a ValueExp. | ||
| 425 | * | ||
| 426 | * @param val A long value. | ||
| 427 | * | ||
| 428 | * @return A ValueExp object containing the argument. The | ||
| 429 | * returned object will be serialized as an instance of the | ||
| 430 | * non-public class {@link <a | ||
| 431 | * href="../../serialized-form.html#javax.management.NumericValueExp"> | ||
| 432 | * javax.management.NumericValueExp</a>}. | ||
| 433 | */ | ||
| 434 | public static ValueExp value(long val) { | ||
| 435 | return new NumericValueExp(val); | ||
| 436 | } | ||
| 437 | |||
| 438 | /** | ||
| 439 | * Returns a numeric value expression that can be used in any Query call | ||
| 440 | * that expects a ValueExp. | ||
| 441 | * | ||
| 442 | * @param val A float value. | ||
| 443 | * | ||
| 444 | * @return A ValueExp object containing the argument. The | ||
| 445 | * returned object will be serialized as an instance of the | ||
| 446 | * non-public class {@link <a | ||
| 447 | * href="../../serialized-form.html#javax.management.NumericValueExp"> | ||
| 448 | * javax.management.NumericValueExp</a>}. | ||
| 449 | */ | ||
| 450 | public static ValueExp value(float val) { | ||
| 451 | return new NumericValueExp((double) val); | ||
| 452 | } | ||
| 453 | |||
| 454 | /** | ||
| 455 | * Returns a numeric value expression that can be used in any Query call | ||
| 456 | * that expects a ValueExp. | ||
| 457 | * | ||
| 458 | * @param val A double value. | ||
| 459 | * | ||
| 460 | * @return A ValueExp object containing the argument. The | ||
| 461 | * returned object will be serialized as an instance of the | ||
| 462 | * non-public class {@link <a | ||
| 463 | * href="../../serialized-form.html#javax.management.NumericValueExp"> | ||
| 464 | * javax.management.NumericValueExp</a>}. | ||
| 465 | */ | ||
| 466 | public static ValueExp value(double val) { | ||
| 467 | return new NumericValueExp(val); | ||
| 468 | } | ||
| 469 | |||
| 470 | /** | ||
| 471 | * Returns a boolean value expression that can be used in any Query call | ||
| 472 | * that expects a ValueExp. | ||
| 473 | * | ||
| 474 | * @param val A boolean value. | ||
| 475 | * | ||
| 476 | * @return A ValueExp object containing the argument. The | ||
| 477 | * returned object will be serialized as an instance of the | ||
| 478 | * non-public class {@link <a | ||
| 479 | * href="../../serialized-form.html#javax.management.BooleanValueExp"> | ||
| 480 | * javax.management.BooleanValueExp</a>}. | ||
| 481 | */ | ||
| 482 | public static ValueExp value(boolean val) { | ||
| 483 | return new BooleanValueExp(val); | ||
| 484 | } | ||
| 485 | |||
| 486 | /** | ||
| 487 | * Returns a binary expression representing the sum of two numeric values, | ||
| 488 | * or the concatenation of two string values. | ||
| 489 | * | ||
| 490 | * @param value1 The first '+' operand. | ||
| 491 | * @param value2 The second '+' operand. | ||
| 492 | * | ||
| 493 | * @return A ValueExp representing the sum or concatenation of | ||
| 494 | * the two arguments. The returned object will be serialized as | ||
| 495 | * an instance of the non-public class {@link <a | ||
| 496 | * href="../../serialized-form.html#javax.management.BinaryOpValueExp"> | ||
| 497 | * javax.management.BinaryOpValueExp</a>} with an {@code op} equal to | ||
| 498 | * {@link #PLUS}. | ||
| 499 | */ | ||
| 500 | public static ValueExp plus(ValueExp value1, ValueExp value2) { | ||
| 501 | return new BinaryOpValueExp(PLUS, value1, value2); | ||
| 502 | } | ||
| 503 | |||
| 504 | /** | ||
| 505 | * Returns a binary expression representing the product of two numeric values. | ||
| 506 | * | ||
| 507 | * | ||
| 508 | * @param value1 The first '*' operand. | ||
| 509 | * @param value2 The second '*' operand. | ||
| 510 | * | ||
| 511 | * @return A ValueExp representing the product. The returned | ||
| 512 | * object will be serialized as an instance of the non-public | ||
| 513 | * class {@link <a | ||
| 514 | * href="../../serialized-form.html#javax.management.BinaryOpValueExp"> | ||
| 515 | * javax.management.BinaryOpValueExp</a>} with an {@code op} equal to | ||
| 516 | * {@link #TIMES}. | ||
| 517 | */ | ||
| 518 | public static ValueExp times(ValueExp value1,ValueExp value2) { | ||
| 519 | return new BinaryOpValueExp(TIMES, value1, value2); | ||
| 520 | } | ||
| 521 | |||
| 522 | /** | ||
| 523 | * Returns a binary expression representing the difference between two numeric | ||
| 524 | * values. | ||
| 525 | * | ||
| 526 | * @param value1 The first '-' operand. | ||
| 527 | * @param value2 The second '-' operand. | ||
| 528 | * | ||
| 529 | * @return A ValueExp representing the difference between two | ||
| 530 | * arguments. The returned object will be serialized as an | ||
| 531 | * instance of the non-public class {@link <a | ||
| 532 | * href="../../serialized-form.html#javax.management.BinaryOpValueExp"> | ||
| 533 | * javax.management.BinaryOpValueExp</a>} with an {@code op} equal to | ||
| 534 | * {@link #MINUS}. | ||
| 535 | */ | ||
| 536 | public static ValueExp minus(ValueExp value1, ValueExp value2) { | ||
| 537 | return new BinaryOpValueExp(MINUS, value1, value2); | ||
| 538 | } | ||
| 539 | |||
| 540 | /** | ||
| 541 | * Returns a binary expression representing the quotient of two numeric | ||
| 542 | * values. | ||
| 543 | * | ||
| 544 | * @param value1 The first '/' operand. | ||
| 545 | * @param value2 The second '/' operand. | ||
| 546 | * | ||
| 547 | * @return A ValueExp representing the quotient of two arguments. | ||
| 548 | * The returned object will be serialized as an instance of the | ||
| 549 | * non-public class {@link <a | ||
| 550 | * href="../../serialized-form.html#javax.management.BinaryOpValueExp"> | ||
| 551 | * javax.management.BinaryOpValueExp</a>} with an {@code op} equal to | ||
| 552 | * {@link #DIV}. | ||
| 553 | */ | ||
| 554 | public static ValueExp div(ValueExp value1, ValueExp value2) { | ||
| 555 | return new BinaryOpValueExp(DIV, value1, value2); | ||
| 556 | } | ||
| 557 | |||
| 558 | /** | ||
| 559 | * Returns a query expression that represents a matching constraint on | ||
| 560 | * a string argument. The value must start with the given literal string | ||
| 561 | * value. | ||
| 562 | * | ||
| 563 | * @param a An attribute expression. | ||
| 564 | * @param s A string value expression representing the beginning of the | ||
| 565 | * string value. | ||
| 566 | * | ||
| 567 | * @return The constraint that a matches s. The returned object | ||
| 568 | * will be serialized as an instance of the non-public class | ||
| 569 | * {@link <a | ||
| 570 | * href="../../serialized-form.html#javax.management.MatchQueryExp"> | ||
| 571 | * javax.management.MatchQueryExp</a>}. | ||
| 572 | */ | ||
| 573 | public static QueryExp initialSubString(AttributeValueExp a, StringValueExp s) { | ||
| 574 | return new MatchQueryExp(a, | ||
| 575 | new StringValueExp(escapeString(s.getValue()) + "*")); | ||
| 576 | } | ||
| 577 | |||
| 578 | /** | ||
| 579 | * Returns a query expression that represents a matching constraint on | ||
| 580 | * a string argument. The value must contain the given literal string | ||
| 581 | * value. | ||
| 582 | * | ||
| 583 | * @param a An attribute expression. | ||
| 584 | * @param s A string value expression representing the substring. | ||
| 585 | * | ||
| 586 | * @return The constraint that a matches s. The returned object | ||
| 587 | * will be serialized as an instance of the non-public class | ||
| 588 | * {@link <a | ||
| 589 | * href="../../serialized-form.html#javax.management.MatchQueryExp"> | ||
| 590 | * javax.management.MatchQueryExp</a>}. | ||
| 591 | */ | ||
| 592 | public static QueryExp anySubString(AttributeValueExp a, StringValueExp s) { | ||
| 593 | return new MatchQueryExp(a, | ||
| 594 | new StringValueExp("*" + escapeString(s.getValue()) + "*")); | ||
| 595 | } | ||
| 596 | |||
| 597 | /** | ||
| 598 | * Returns a query expression that represents a matching constraint on | ||
| 599 | * a string argument. The value must end with the given literal string | ||
| 600 | * value. | ||
| 601 | * | ||
| 602 | * @param a An attribute expression. | ||
| 603 | * @param s A string value expression representing the end of the string | ||
| 604 | * value. | ||
| 605 | * | ||
| 606 | * @return The constraint that a matches s. The returned object | ||
| 607 | * will be serialized as an instance of the non-public class | ||
| 608 | * {@link <a | ||
| 609 | * href="../../serialized-form.html#javax.management.MatchQueryExp"> | ||
| 610 | * javax.management.MatchQueryExp</a>}. | ||
| 611 | */ | ||
| 612 | public static QueryExp finalSubString(AttributeValueExp a, StringValueExp s) { | ||
| 613 | return new MatchQueryExp(a, | ||
| 614 | new StringValueExp("*" + escapeString(s.getValue()))); | ||
| 615 | } | ||
| 616 | |||
| 617 | /** | ||
| 618 | * Returns a query expression that represents an inheritance constraint | ||
| 619 | * on an MBean class. | ||
| 620 | * <p>Example: to find MBeans that are instances of | ||
| 621 | * {@link NotificationBroadcaster}, use | ||
| 622 | * {@code Query.isInstanceOf(Query.value(NotificationBroadcaster.class.getName()))}. | ||
| 623 | * </p> | ||
| 624 | * <p>Evaluating this expression for a given | ||
| 625 | * <code>objectName</code> includes performing {@link | ||
| 626 | * MBeanServer#isInstanceOf MBeanServer.isInstanceOf(objectName, | ||
| 627 | * ((StringValueExp)classNameValue.apply(objectName)).getValue()}.</p> | ||
| 628 | * | ||
| 629 | * @param classNameValue The {@link StringValueExp} returning the name | ||
| 630 | * of the class of which selected MBeans should be instances. | ||
| 631 | * @return a query expression that represents an inheritance | ||
| 632 | * constraint on an MBean class. The returned object will be | ||
| 633 | * serialized as an instance of the non-public class {@link <a | ||
| 634 | * href="../../serialized-form.html#javax.management.InstanceOfQueryExp"> | ||
| 635 | * javax.management.InstanceOfQueryExp</a>}. | ||
| 636 | * @since 1.6 | ||
| 637 | */ | ||
| 638 | public static QueryExp isInstanceOf(StringValueExp classNameValue) { | ||
| 639 | return new InstanceOfQueryExp(classNameValue); | ||
| 640 | } | ||
| 641 | |||
| 642 | /** | ||
| 643 | * Utility method to escape strings used with | ||
| 644 | * Query.{initial|any|final}SubString() methods. | ||
| 645 | */ | ||
| 646 | private static String escapeString(String s) { | ||
| 647 | if (s == null) | ||
| 648 | return null; | ||
| 649 | s = s.replace("\\", "\\\\"); | ||
| 650 | s = s.replace("*", "\\*"); | ||
| 651 | s = s.replace("?", "\\?"); | ||
| 652 | s = s.replace("[", "\\["); | ||
| 653 | return s; | ||
| 654 | } | ||
| 655 | } | ||