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| 1 | /* | ||
| 2 | * Copyright (c) 2004, 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 sun.jvmstat.monitor; | ||
| 27 | |||
| 28 | import java.net.*; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * An abstraction that identifies a target host and communications | ||
| 32 | * protocol. The HostIdentifier, or hostid, provides a convenient string | ||
| 33 | * representation of the information needed to locate and communicate with | ||
| 34 | * a target host. The string, based on a {@link URI}, may specify the | ||
| 35 | * the communications protocol, host name, and protocol specific information | ||
| 36 | * for a target host. The format for a HostIdentifier string is: | ||
| 37 | * <pre> | ||
| 38 | * [<I>protocol</I>:][[<I>//</I>]<I>hostname</I>][<I>:port</I>][<I>/servername</I>] | ||
| 39 | * </pre> | ||
| 40 | * There are actually no required components of this string, as a null string | ||
| 41 | * is interpreted to mean a local connection to the local host and is equivalent | ||
| 42 | * to the string <em>local://localhost</em>. The components of the | ||
| 43 | * HostIdentifier are: | ||
| 44 | * <ul> | ||
| 45 | * <li><p><tt>protocol</tt> - The communications protocol. If omitted, | ||
| 46 | * and a hostname is not specified, then default local protocol, | ||
| 47 | * <em>local:</em>, is assumed. If the protocol is omitted and a | ||
| 48 | * hostname is specified then the default remote protocol, | ||
| 49 | * <em>rmi:</em> is assumed. | ||
| 50 | * </p></li> | ||
| 51 | * <li><p><tt>hostname</tt> - The hostname. If omitted, then | ||
| 52 | * <em>localhost</em> is assumed. If the protocol is also omitted, | ||
| 53 | * then default local protocol <em>local:</em> is also assumed. | ||
| 54 | * If the hostname is not omitted but the protocol is omitted, | ||
| 55 | * then the default remote protocol, <em>rmi:</em> is assumed. | ||
| 56 | * </p></li> | ||
| 57 | * <li><p><tt>port</tt> - The port for the communications protocol. | ||
| 58 | * Treatment of the <tt>port</tt> parameter is implementation | ||
| 59 | * (protocol) specific. It is unused by the default local protocol, | ||
| 60 | * <em>local:</em>. For the default remote protocol, <em>rmi:</em>, | ||
| 61 | * <tt>port</tt> indicates the port number of the <em>rmiregistry</em> | ||
| 62 | * on the target host and defaults to port 1099. | ||
| 63 | * </p></li> | ||
| 64 | * <li><p><tt>servername</tt> - The treatment of the Path, Query, and | ||
| 65 | * Fragment components of the HostIdentifier are implementation | ||
| 66 | * (protocol) dependent. These components are ignored by the | ||
| 67 | * default local protocol, <em>local:</em>. For the default remote | ||
| 68 | * protocol, <em>rmi</em>, the Path component is interpreted as | ||
| 69 | * the name of the RMI remote object. The Query component may | ||
| 70 | * contain an access mode specifier <em>?mode=</em> specifying | ||
| 71 | * <em>"r"</em> or <em>"rw"</em> access (write access currently | ||
| 72 | * ignored). The Fragment part is ignored. | ||
| 73 | * </p></li> | ||
| 74 | * </ul> | ||
| 75 | * <p> | ||
| 76 | * All HostIdentifier objects are represented as absolute, hierarchical URIs. | ||
| 77 | * The constructors accept relative URIs, but these will generally be | ||
| 78 | * transformed into an absolute URI specifying a default protocol. A | ||
| 79 | * HostIdentifier differs from a URI in that certain contractions and | ||
| 80 | * illicit syntactical constructions are allowed. The following are all | ||
| 81 | * valid HostIdentifier strings: | ||
| 82 | * | ||
| 83 | * <ul> | ||
| 84 | * <li><p>< null > - transformed into "//localhost"</p></li> | ||
| 85 | * <li><p>localhost - transformed into "//localhost"</p></li> | ||
| 86 | * <li><p>hostname - transformed into "//hostname"</p></li> | ||
| 87 | * <li><p>hostname:port - transformed into "//hostname:port"</p></li> | ||
| 88 | * <li><p>proto:hostname - transformed into "proto://hostname"</p></li> | ||
| 89 | * <li><p>proto:hostname:port - transformed into | ||
| 90 | * "proto://hostname:port"</p></li> | ||
| 91 | * <li><p>proto://hostname:port</p></li> | ||
| 92 | * </ul> | ||
| 93 | * </p> | ||
| 94 | * | ||
| 95 | * @see URI | ||
| 96 | * @see VmIdentifier | ||
| 97 | * | ||
| 98 | * @author Brian Doherty | ||
| 99 | * @since 1.5 | ||
| 100 | */ | ||
| 101 | public class HostIdentifier { | ||
| 102 | private URI uri; | ||
| 103 | |||
| 104 | /** | ||
| 105 | * creates a canonical representation of the uriString. This method | ||
| 106 | * performs certain translations depending on the type of URI generated | ||
| 107 | * by the string. | ||
| 108 | */ | ||
| 109 | private URI canonicalize(String uriString) throws URISyntaxException { | ||
| 110 | if ((uriString == null) || (uriString.compareTo("localhost") == 0)) { | ||
| 111 | uriString = "//localhost"; | ||
| 112 | return new URI(uriString); | ||
| 113 | } | ||
| 114 | |||
| 115 | URI u = new URI(uriString); | ||
| 116 | |||
| 117 | if (u.isAbsolute()) { | ||
| 118 | if (u.isOpaque()) { | ||
| 119 | /* | ||
| 120 | * this code is here to deal with a special case. For ease of | ||
| 121 | * use, we'd like to be able to handle the case where the user | ||
| 122 | * specifies hostname:port, not requiring the scheme part. | ||
| 123 | * This introduces some subtleties. | ||
| 124 | * hostname:port - scheme = hostname | ||
| 125 | * - schemespecificpart = port | ||
| 126 | * - hostname = null | ||
| 127 | * - userinfo=null | ||
| 128 | * however, someone could also enter scheme:hostname:port and | ||
| 129 | * get into this code. the strategy is to consider this | ||
| 130 | * syntax illegal and provide some code to defend against it. | ||
| 131 | * Basically, we test that the string contains only one ":" | ||
| 132 | * and that the ssp is numeric. If we get two colons, we will | ||
| 133 | * attempt to insert the "//" after the first colon and then | ||
| 134 | * try to create a URI from the resulting string. | ||
| 135 | */ | ||
| 136 | String scheme = u.getScheme(); | ||
| 137 | String ssp = u.getSchemeSpecificPart(); | ||
| 138 | String frag = u.getFragment(); | ||
| 139 | URI u2 = null; | ||
| 140 | |||
| 141 | int c1index = uriString.indexOf(":"); | ||
| 142 | int c2index = uriString.lastIndexOf(":"); | ||
| 143 | if (c2index != c1index) { | ||
| 144 | /* | ||
| 145 | * this is the scheme:hostname:port case. Attempt to | ||
| 146 | * transform this to scheme://hostname:port. If a path | ||
| 147 | * part is part of the original strings, it will be | ||
| 148 | * included in the SchemeSpecificPart. however, the | ||
| 149 | * fragment part must be handled separately. | ||
| 150 | */ | ||
| 151 | if (frag == null) { | ||
| 152 | u2 = new URI(scheme + "://" + ssp); | ||
| 153 | } else { | ||
| 154 | u2 = new URI(scheme + "://" + ssp + "#" + frag); | ||
| 155 | } | ||
| 156 | return u2; | ||
| 157 | } | ||
| 158 | /* | ||
| 159 | * here we have the <string>:<string> case, possibly with | ||
| 160 | * optional path and fragment components. we assume that | ||
| 161 | * the part following the colon is a number. we don't check | ||
| 162 | * this condition here as it will get detected later anyway. | ||
| 163 | */ | ||
| 164 | u2 = new URI("//" + uriString); | ||
| 165 | return u2; | ||
| 166 | } else { | ||
| 167 | return u; | ||
| 168 | } | ||
| 169 | } else { | ||
| 170 | /* | ||
| 171 | * This is the case where we were given a hostname followed | ||
| 172 | * by a path part, fragment part, or both a path and fragment | ||
| 173 | * part. The key here is that no scheme part was specified. | ||
| 174 | * For this case, if the scheme specific part does not begin | ||
| 175 | * with "//", then we prefix the "//" to the given string and | ||
| 176 | * attempt to create a URI from the resulting string. | ||
| 177 | */ | ||
| 178 | String ssp = u.getSchemeSpecificPart(); | ||
| 179 | if (ssp.startsWith("//")) { | ||
| 180 | return u; | ||
| 181 | } else { | ||
| 182 | return new URI("//" + uriString); | ||
| 183 | } | ||
| 184 | } | ||
| 185 | } | ||
| 186 | |||
| 187 | /** | ||
| 188 | * Create a HostIdentifier instance from a string value. | ||
| 189 | * | ||
| 190 | * @param uriString a string representing a target host. The syntax of | ||
| 191 | * the string must conform to the rules specified in the | ||
| 192 | * class documentation. | ||
| 193 | * | ||
| 194 | * @throws URISyntaxException Thrown when the uriString or its canonical | ||
| 195 | * form is poorly formed. This exception may | ||
| 196 | * get encapsulated into a MonitorException in | ||
| 197 | * a future version. | ||
| 198 | * | ||
| 199 | */ | ||
| 200 | public HostIdentifier(String uriString) throws URISyntaxException { | ||
| 201 | uri = canonicalize(uriString); | ||
| 202 | } | ||
| 203 | |||
| 204 | /** | ||
| 205 | * Create a HostIdentifier instance from component parts of a URI. | ||
| 206 | * | ||
| 207 | * @param scheme the {@link URI#getScheme} component of a URI. | ||
| 208 | * @param authority the {@link URI#getAuthority} component of a URI. | ||
| 209 | * @param path the {@link URI#getPath} component of a URI. | ||
| 210 | * @param query the {@link URI#getQuery} component of a URI. | ||
| 211 | * @param fragment the {@link URI#getFragment} component of a URI. | ||
| 212 | * | ||
| 213 | * @throws URISyntaxException Thrown when the uriString or its canonical | ||
| 214 | * form is poorly formed. This exception may | ||
| 215 | * get encapsulated into a MonitorException in | ||
| 216 | * a future version. | ||
| 217 | * @see URI | ||
| 218 | */ | ||
| 219 | public HostIdentifier(String scheme, String authority, String path, | ||
| 220 | String query, String fragment) | ||
| 221 | throws URISyntaxException { | ||
| 222 | uri = new URI(scheme, authority, path, query, fragment); | ||
| 223 | } | ||
| 224 | |||
| 225 | /** | ||
| 226 | * Create a HostIdentifier instance from a VmIdentifier. | ||
| 227 | * | ||
| 228 | * The necessary components of the VmIdentifier are extracted and | ||
| 229 | * reassembled into a HostIdentifier. If a "file:" scheme (protocol) | ||
| 230 | * is specified, the the returned HostIdentifier will always be | ||
| 231 | * equivalent to HostIdentifier("file://localhost"). | ||
| 232 | * | ||
| 233 | * @param vmid the VmIdentifier use to construct the HostIdentifier. | ||
| 234 | */ | ||
| 235 | public HostIdentifier(VmIdentifier vmid) { | ||
| 236 | /* | ||
| 237 | * Extract all components of the VmIdentifier URI except the | ||
| 238 | * user-info part of the authority (the lvmid). | ||
| 239 | */ | ||
| 240 | StringBuilder sb = new StringBuilder(); | ||
| 241 | String scheme = vmid.getScheme(); | ||
| 242 | String host = vmid.getHost(); | ||
| 243 | String authority = vmid.getAuthority(); | ||
| 244 | |||
| 245 | // check for 'file:' VmIdentifiers and handled as a special case. | ||
| 246 | if ((scheme != null) && (scheme.compareTo("file") == 0)) { | ||
| 247 | try { | ||
| 248 | uri = new URI("file://localhost"); | ||
| 249 | } catch (URISyntaxException e) { }; | ||
| 250 | return; | ||
| 251 | } | ||
| 252 | |||
| 253 | if ((host != null) && (host.compareTo(authority) == 0)) { | ||
| 254 | /* | ||
| 255 | * this condition occurs when the VmIdentifier specifies only | ||
| 256 | * the authority (i.e. the lvmid ), and not a host name. | ||
| 257 | */ | ||
| 258 | host = null; | ||
| 259 | } | ||
| 260 | |||
| 261 | if (scheme == null) { | ||
| 262 | if (host == null) { | ||
| 263 | scheme = "local"; // default local scheme | ||
| 264 | } else { | ||
| 265 | /* | ||
| 266 | * rmi is the default remote scheme. if the VmIdentifier | ||
| 267 | * specifies some other protocol, this default is overridden. | ||
| 268 | */ | ||
| 269 | scheme = "rmi"; | ||
| 270 | } | ||
| 271 | } | ||
| 272 | |||
| 273 | sb.append(scheme).append("://"); | ||
| 274 | |||
| 275 | if (host == null) { | ||
| 276 | sb.append("localhost"); // default host name | ||
| 277 | } else { | ||
| 278 | sb.append(host); | ||
| 279 | } | ||
| 280 | |||
| 281 | int port = vmid.getPort(); | ||
| 282 | if (port != -1) { | ||
| 283 | sb.append(":").append(port); | ||
| 284 | } | ||
| 285 | |||
| 286 | String path = vmid.getPath(); | ||
| 287 | if ((path != null) && (path.length() != 0)) { | ||
| 288 | sb.append(path); | ||
| 289 | } | ||
| 290 | |||
| 291 | String query = vmid.getQuery(); | ||
| 292 | if (query != null) { | ||
| 293 | sb.append("?").append(query); | ||
| 294 | } | ||
| 295 | |||
| 296 | String frag = vmid.getFragment(); | ||
| 297 | if (frag != null) { | ||
| 298 | sb.append("#").append(frag); | ||
| 299 | } | ||
| 300 | |||
| 301 | try { | ||
| 302 | uri = new URI(sb.toString()); | ||
| 303 | } catch (URISyntaxException e) { | ||
| 304 | // shouldn't happen, as we were passed a valid VmIdentifier | ||
| 305 | throw new RuntimeException("Internal Error", e); | ||
| 306 | } | ||
| 307 | } | ||
| 308 | |||
| 309 | /** | ||
| 310 | * Resolve a VmIdentifier with this HostIdentifier. A VmIdentifier, such | ||
| 311 | * as <em>1234</em> or <em>1234@hostname</em> or any other string that | ||
| 312 | * omits certain components of the URI string may be valid, but is certainly | ||
| 313 | * incomplete. They are missing critical information for identifying the | ||
| 314 | * the communications protocol, target host, or other parameters. A | ||
| 315 | * VmIdentifier of this form is considered <em>unresolved</em>. This method | ||
| 316 | * uses components of the HostIdentifier to resolve the missing components | ||
| 317 | * of the VmIdentifier. | ||
| 318 | * <p> | ||
| 319 | * Specified components of the unresolved VmIdentifier take precedence | ||
| 320 | * over their HostIdentifier counterparts. For example, if the VmIdentifier | ||
| 321 | * indicates <em>1234@hostname:2099</em> and the HostIdentifier indicates | ||
| 322 | * <em>rmi://hostname:1099/</em>, then the resolved VmIdentifier will | ||
| 323 | * be <em>rmi://1234@hostname:2099</em>. Any component not explicitly | ||
| 324 | * specified or assumed by the HostIdentifier, will remain unresolved in | ||
| 325 | * resolved VmIdentifier. | ||
| 326 | * <p> | ||
| 327 | * A VmIdentifier specifying a <em>file:</em> scheme (protocol), is | ||
| 328 | * not changed in any way by this method. | ||
| 329 | * | ||
| 330 | * @param vmid the unresolved VmIdentifier. | ||
| 331 | * @return VmIdentifier - the resolved VmIdentifier. If vmid was resolved | ||
| 332 | * on entry to this method, then the returned | ||
| 333 | * VmIdentifier will be equal, but not identical, to | ||
| 334 | * vmid. | ||
| 335 | */ | ||
| 336 | public VmIdentifier resolve(VmIdentifier vmid) | ||
| 337 | throws URISyntaxException, MonitorException { | ||
| 338 | String scheme = vmid.getScheme(); | ||
| 339 | String host = vmid.getHost(); | ||
| 340 | String authority = vmid.getAuthority(); | ||
| 341 | |||
| 342 | if ((scheme != null) && (scheme.compareTo("file") == 0)) { | ||
| 343 | // don't attempt to resolve a file based VmIdentifier. | ||
| 344 | return vmid; | ||
| 345 | } | ||
| 346 | |||
| 347 | if ((host != null) && (host.compareTo(authority) == 0)) { | ||
| 348 | /* | ||
| 349 | * this condition occurs when the VmIdentifier specifies only | ||
| 350 | * the authority (i.e. an lvmid), and not a host name. | ||
| 351 | */ | ||
| 352 | host = null; | ||
| 353 | } | ||
| 354 | |||
| 355 | if (scheme == null) { | ||
| 356 | scheme = getScheme(); | ||
| 357 | } | ||
| 358 | |||
| 359 | URI nuri = null; | ||
| 360 | |||
| 361 | StringBuffer sb = new StringBuffer(); | ||
| 362 | |||
| 363 | sb.append(scheme).append("://"); | ||
| 364 | |||
| 365 | String userInfo = vmid.getUserInfo(); | ||
| 366 | if (userInfo != null) { | ||
| 367 | sb.append(userInfo); | ||
| 368 | } else { | ||
| 369 | sb.append(vmid.getAuthority()); | ||
| 370 | } | ||
| 371 | |||
| 372 | if (host == null) { | ||
| 373 | host = getHost(); | ||
| 374 | } | ||
| 375 | sb.append("@").append(host); | ||
| 376 | |||
| 377 | int port = vmid.getPort(); | ||
| 378 | if (port == -1) { | ||
| 379 | port = getPort(); | ||
| 380 | } | ||
| 381 | |||
| 382 | if (port != -1) { | ||
| 383 | sb.append(":").append(port); | ||
| 384 | } | ||
| 385 | |||
| 386 | String path = vmid.getPath(); | ||
| 387 | if ((path == null) || (path.length() == 0)) { | ||
| 388 | path = getPath(); | ||
| 389 | } | ||
| 390 | |||
| 391 | if ((path != null) && (path.length() > 0)) { | ||
| 392 | sb.append(path); | ||
| 393 | } | ||
| 394 | |||
| 395 | String query = vmid.getQuery(); | ||
| 396 | if (query == null) { | ||
| 397 | query = getQuery(); | ||
| 398 | } | ||
| 399 | if (query != null) { | ||
| 400 | sb.append("?").append(query); | ||
| 401 | } | ||
| 402 | |||
| 403 | String fragment = vmid.getFragment(); | ||
| 404 | if (fragment == null) { | ||
| 405 | fragment = getFragment(); | ||
| 406 | } | ||
| 407 | if (fragment != null) { | ||
| 408 | sb.append("#").append(fragment); | ||
| 409 | } | ||
| 410 | |||
| 411 | String s = sb.toString(); | ||
| 412 | return new VmIdentifier(s); | ||
| 413 | } | ||
| 414 | |||
| 415 | /** | ||
| 416 | * Return the Scheme, or protocol, portion of this HostIdentifier. | ||
| 417 | * | ||
| 418 | * @return String - the scheme for this HostIdentifier. | ||
| 419 | * @see URI#getScheme() | ||
| 420 | */ | ||
| 421 | public String getScheme() { | ||
| 422 | return uri.isAbsolute() ? uri.getScheme() : null; | ||
| 423 | } | ||
| 424 | |||
| 425 | /** | ||
| 426 | * Return the Scheme Specific Part of this HostIdentifier. | ||
| 427 | * | ||
| 428 | * @return String - the scheme specific part for this HostIdentifier. | ||
| 429 | * @see URI#getSchemeSpecificPart() | ||
| 430 | */ | ||
| 431 | public String getSchemeSpecificPart() { | ||
| 432 | return uri.getSchemeSpecificPart(); | ||
| 433 | } | ||
| 434 | |||
| 435 | /** | ||
| 436 | * Return the User Info part of this HostIdentifier. | ||
| 437 | * | ||
| 438 | * @return String - the user info part for this HostIdentifier. | ||
| 439 | * @see URI#getUserInfo() | ||
| 440 | */ | ||
| 441 | public String getUserInfo() { | ||
| 442 | return uri.getUserInfo(); | ||
| 443 | } | ||
| 444 | |||
| 445 | /** | ||
| 446 | * Return the Host part of this HostIdentifier. | ||
| 447 | * | ||
| 448 | * @return String - the host part for this HostIdentifier, or | ||
| 449 | * "localhost" if the URI.getHost() returns null. | ||
| 450 | * @see URI#getUserInfo() | ||
| 451 | */ | ||
| 452 | public String getHost() { | ||
| 453 | return (uri.getHost() == null) ? "localhost" : uri.getHost(); | ||
| 454 | } | ||
| 455 | |||
| 456 | /** | ||
| 457 | * Return the Port for of this HostIdentifier. | ||
| 458 | * | ||
| 459 | * @return String - the port for this HostIdentifier | ||
| 460 | * @see URI#getPort() | ||
| 461 | */ | ||
| 462 | public int getPort() { | ||
| 463 | return uri.getPort(); | ||
| 464 | } | ||
| 465 | |||
| 466 | /** | ||
| 467 | * Return the Path part of this HostIdentifier. | ||
| 468 | * | ||
| 469 | * @return String - the path part for this HostIdentifier. | ||
| 470 | * @see URI#getPath() | ||
| 471 | */ | ||
| 472 | public String getPath() { | ||
| 473 | return uri.getPath(); | ||
| 474 | } | ||
| 475 | |||
| 476 | /** | ||
| 477 | * Return the Query part of this HostIdentifier. | ||
| 478 | * | ||
| 479 | * @return String - the query part for this HostIdentifier. | ||
| 480 | * @see URI#getQuery() | ||
| 481 | */ | ||
| 482 | public String getQuery() { | ||
| 483 | return uri.getQuery(); | ||
| 484 | } | ||
| 485 | |||
| 486 | /** | ||
| 487 | * Return the Fragment part of this HostIdentifier. | ||
| 488 | * | ||
| 489 | * @return String - the fragment part for this HostIdentifier. | ||
| 490 | * @see URI#getFragment() | ||
| 491 | */ | ||
| 492 | public String getFragment() { | ||
| 493 | return uri.getFragment(); | ||
| 494 | } | ||
| 495 | |||
| 496 | /** | ||
| 497 | * Return the mode indicated in this HostIdentifier. | ||
| 498 | * | ||
| 499 | * @return String - the mode string. If no mode is specified, then "r" | ||
| 500 | * is returned. otherwise, the specified mode is returned. | ||
| 501 | */ | ||
| 502 | public String getMode() { | ||
| 503 | String query = getQuery(); | ||
| 504 | if (query != null) { | ||
| 505 | String[] queryArgs = query.split("\\+"); | ||
| 506 | for (int i = 0; i < queryArgs.length; i++) { | ||
| 507 | if (queryArgs[i].startsWith("mode=")) { | ||
| 508 | int index = queryArgs[i].indexOf('='); | ||
| 509 | return queryArgs[i].substring(index+1); | ||
| 510 | } | ||
| 511 | } | ||
| 512 | } | ||
| 513 | return "r"; | ||
| 514 | } | ||
| 515 | |||
| 516 | /** | ||
| 517 | * Return the URI associated with the HostIdentifier. | ||
| 518 | * | ||
| 519 | * @return URI - the URI. | ||
| 520 | * @see URI | ||
| 521 | */ | ||
| 522 | public URI getURI() { | ||
| 523 | return uri; | ||
| 524 | } | ||
| 525 | |||
| 526 | /** | ||
| 527 | * Return the hash code for this HostIdentifier. The hash code is | ||
| 528 | * identical to the hash code for the contained URI. | ||
| 529 | * | ||
| 530 | * @return int - the hashcode. | ||
| 531 | * @see URI#hashCode() | ||
| 532 | */ | ||
| 533 | public int hashCode() { | ||
| 534 | return uri.hashCode(); | ||
| 535 | } | ||
| 536 | |||
| 537 | /** | ||
| 538 | * Test for quality with other objects. | ||
| 539 | * | ||
| 540 | * @param object the object to be test for equality. | ||
| 541 | * @return boolean - returns true if the given object is of type | ||
| 542 | * HostIdentifier and its URI field is equal to this | ||
| 543 | * object's URI field. Otherwise, returns false. | ||
| 544 | * | ||
| 545 | * @see URI#equals(Object) | ||
| 546 | */ | ||
| 547 | public boolean equals(Object object) { | ||
| 548 | if (object == this) { | ||
| 549 | return true; | ||
| 550 | } | ||
| 551 | if (!(object instanceof HostIdentifier)) { | ||
| 552 | return false; | ||
| 553 | } | ||
| 554 | return uri.equals(((HostIdentifier)object).uri); | ||
| 555 | } | ||
| 556 | |||
| 557 | |||
| 558 | /** | ||
| 559 | * Convert to a string representation. Conversion is identical to | ||
| 560 | * calling getURI().toString(). This may change in a future release. | ||
| 561 | * | ||
| 562 | * @return String - a String representation of the HostIdentifier. | ||
| 563 | * | ||
| 564 | * @see URI#toString() | ||
| 565 | */ | ||
| 566 | public String toString() { | ||
| 567 | return uri.toString(); | ||
| 568 | } | ||
| 569 | } | ||