root / branches / Mobile_Compatible_Hito_1 / libFMap / src / es / prodevelop / gvsig / mobile / fmap / driver / raster / wms / WMSProtocolHandler.java @ 21606
History | View | Annotate | Download (24 KB)
| 1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
|---|---|
| 2 |
*
|
| 3 |
* Copyright (C) 2006 Prodevelop and Generalitat Valenciana.
|
| 4 |
*
|
| 5 |
* This program is free software; you can redistribute it and/or
|
| 6 |
* modify it under the terms of the GNU General Public License
|
| 7 |
* as published by the Free Software Foundation; either version 2
|
| 8 |
* of the License, or (at your option) any later version.
|
| 9 |
*
|
| 10 |
* This program is distributed in the hope that it will be useful,
|
| 11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
* GNU General Public License for more details.
|
| 14 |
*
|
| 15 |
* You should have received a copy of the GNU General Public License
|
| 16 |
* along with this program; if not, write to the Free Software
|
| 17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 18 |
*
|
| 19 |
* For more information, contact:
|
| 20 |
*
|
| 21 |
* Generalitat Valenciana
|
| 22 |
* Conselleria d'Infraestructures i Transport
|
| 23 |
* Av. Blasco Ib??ez, 50
|
| 24 |
* 46010 VALENCIA
|
| 25 |
* SPAIN
|
| 26 |
*
|
| 27 |
* +34 963862235
|
| 28 |
* gvsig@gva.es
|
| 29 |
* http://www.gvsig.gva.es
|
| 30 |
*
|
| 31 |
* or
|
| 32 |
*
|
| 33 |
* Prodevelop Integraci?n de Tecnolog?as SL
|
| 34 |
* Conde Salvatierra de ?lava , 34-10
|
| 35 |
* 46004 Valencia
|
| 36 |
* Spain
|
| 37 |
*
|
| 38 |
* +34 963 510 612
|
| 39 |
* +34 963 510 968
|
| 40 |
* gis@prodevelop.es
|
| 41 |
* http://www.prodevelop.es
|
| 42 |
*
|
| 43 |
* or
|
| 44 |
*
|
| 45 |
* Instituto de Rob?tica
|
| 46 |
* Apartado de correos 2085
|
| 47 |
* 46071 Valencia
|
| 48 |
* (Spain)
|
| 49 |
*
|
| 50 |
* +34 963 543 577
|
| 51 |
* jjordan@robotica.uv.es
|
| 52 |
* http://robotica.uv.es
|
| 53 |
*
|
| 54 |
*/
|
| 55 |
|
| 56 |
package es.prodevelop.gvsig.mobile.fmap.driver.raster.wms; |
| 57 |
|
| 58 |
import java.awt.geom.Rectangle2D; |
| 59 |
import java.io.ByteArrayInputStream; |
| 60 |
import java.io.File; |
| 61 |
import java.io.FileInputStream; |
| 62 |
import java.io.FileReader; |
| 63 |
import java.io.IOException; |
| 64 |
import java.io.StringReader; |
| 65 |
import java.net.URL; |
| 66 |
import java.util.ArrayList; |
| 67 |
|
| 68 |
import org.apache.log4j.Logger; |
| 69 |
import org.kxml2.io.KXmlParser; |
| 70 |
import org.xmlpull.v1.XmlPullParserException; |
| 71 |
|
| 72 |
import es.prodevelop.gvsig.mobile.fmap.util.download.DownloadTask; |
| 73 |
import es.prodevelop.gvsig.mobile.fmap.util.download.Downloader; |
| 74 |
import es.prodevelop.gvsig.mobile.fmap.util.string.StringUtilities; |
| 75 |
|
| 76 |
/**
|
| 77 |
*
|
| 78 |
* This is the class that interacts with the WMS drivers. Sends requests
|
| 79 |
* (capabilities, images, etc) and
|
| 80 |
* starts the parsing process. It also instantiates the root of the layer descriptions
|
| 81 |
* tree, and provides a getter used by the WMS dialog to show the results.
|
| 82 |
*
|
| 83 |
* @see es.prodevelop.gvsig.mobile.fmap.driver.raster.wms.WmsRasterDriver
|
| 84 |
* @see es.prodevelop.gvsig.mobile.fmap.driver.raster.wms.WMSLayerDescription
|
| 85 |
*
|
| 86 |
* @author iver
|
| 87 |
* @author jldominguez
|
| 88 |
*
|
| 89 |
*/
|
| 90 |
public class WMSProtocolHandler { |
| 91 |
|
| 92 |
private static Logger logger = Logger.getLogger(WMSProtocolHandler.class); |
| 93 |
|
| 94 |
public static final String DEFAULT_WMS_VERSION = "1.1.1"; |
| 95 |
private String encoding = "UTF-8"; |
| 96 |
private String host; |
| 97 |
// private String port;
|
| 98 |
private String version = ""; |
| 99 |
private String symbol = ""; |
| 100 |
|
| 101 |
public WMSLayerDescription root;
|
| 102 |
private boolean infoable = false; |
| 103 |
private ArrayList formats = new ArrayList(); |
| 104 |
private ArrayList infoFormats = new ArrayList(); |
| 105 |
|
| 106 |
/**
|
| 107 |
* @return the root of the layer descriptions tree
|
| 108 |
*/
|
| 109 |
public WMSLayerDescription getRoot() {
|
| 110 |
return root;
|
| 111 |
} |
| 112 |
|
| 113 |
/**
|
| 114 |
* Removes all the objects owned by this object. This is used when the WMS dialog closes,
|
| 115 |
* in order to prevent memory leaks.
|
| 116 |
*
|
| 117 |
*/
|
| 118 |
public void delete() { |
| 119 |
|
| 120 |
if (root != null) root.delete(); |
| 121 |
formats.clear(); |
| 122 |
formats = null;
|
| 123 |
infoFormats.clear(); |
| 124 |
infoFormats = null;
|
| 125 |
} |
| 126 |
|
| 127 |
/**
|
| 128 |
* Sets the WMS protocol version (1.1.1, etc)
|
| 129 |
*
|
| 130 |
* @param v the WMS protocol version
|
| 131 |
*/
|
| 132 |
public void setVersion(String v) { |
| 133 |
version = v; |
| 134 |
} |
| 135 |
|
| 136 |
/**
|
| 137 |
* Sets the path separator symbol to use with the current WMS server
|
| 138 |
* @param s the path separator symbol to use with the current WMS server
|
| 139 |
*/
|
| 140 |
public void setSymbol(String s) { |
| 141 |
symbol = s; |
| 142 |
} |
| 143 |
|
| 144 |
/**
|
| 145 |
*
|
| 146 |
* @return the WMS protocol version (1.1.1, etc)
|
| 147 |
*/
|
| 148 |
public String getVersion() { |
| 149 |
return version;
|
| 150 |
} |
| 151 |
|
| 152 |
/**
|
| 153 |
*
|
| 154 |
* @return the path separator symbol to use with the current WMS server
|
| 155 |
*/
|
| 156 |
public String getSymbol() { |
| 157 |
return symbol;
|
| 158 |
} |
| 159 |
|
| 160 |
|
| 161 |
/**
|
| 162 |
*
|
| 163 |
* @return an array with the image formats supoprted by the current WMS server
|
| 164 |
*/
|
| 165 |
public ArrayList getFormats() { |
| 166 |
return formats;
|
| 167 |
} |
| 168 |
|
| 169 |
/**
|
| 170 |
*
|
| 171 |
* @return an array with the image formats supported by the current WMS server
|
| 172 |
*/
|
| 173 |
public ArrayList getInfoFormats() { |
| 174 |
return infoFormats;
|
| 175 |
} |
| 176 |
|
| 177 |
/**
|
| 178 |
*
|
| 179 |
* @return whether the layer described by this object is declared as infoable by
|
| 180 |
* the server in the getcapabilities response
|
| 181 |
*/
|
| 182 |
public boolean isInfoable() { |
| 183 |
return infoable;
|
| 184 |
} |
| 185 |
|
| 186 |
|
| 187 |
/**
|
| 188 |
*
|
| 189 |
* @return the host url
|
| 190 |
*/
|
| 191 |
public String getHost() { |
| 192 |
return host;
|
| 193 |
} |
| 194 |
|
| 195 |
/**
|
| 196 |
* Sets the host url
|
| 197 |
* @param _host the new host url
|
| 198 |
*/
|
| 199 |
public void setHost(String _host) { |
| 200 |
host = _host; |
| 201 |
} |
| 202 |
|
| 203 |
/**
|
| 204 |
* This method starts the get capabilities request process and parses the result.
|
| 205 |
*
|
| 206 |
* @param version the WMS protocol version to be used
|
| 207 |
* @param sym the path separator symbol to be used when building requests
|
| 208 |
* @return whether the get capabilities request was completed successfully
|
| 209 |
*/
|
| 210 |
public boolean getCapabilities(String version, String sym) { |
| 211 |
|
| 212 |
URL request = null; |
| 213 |
try {
|
| 214 |
request = new URL(buildCapabilitiesRequest(host, version, sym)); |
| 215 |
} catch (Exception e) { |
| 216 |
logger.error("Bad capabilities request URL: " + e.getMessage());
|
| 217 |
} |
| 218 |
|
| 219 |
try {
|
| 220 |
// File f = Downloader.get(request, "cap");
|
| 221 |
|
| 222 |
File f = (File) Downloader.downloadObjectCancel(request, "cap", |
| 223 |
DownloadTask.FILE, "wms", null, true); |
| 224 |
|
| 225 |
if (f == null) { |
| 226 |
logger.error("capabilities file is null");
|
| 227 |
return false; |
| 228 |
} |
| 229 |
clear(); |
| 230 |
parse(f); |
| 231 |
} catch (Exception e) { |
| 232 |
logger.error("While downloading/parsing WMS capabilities file: "
|
| 233 |
+ e.getMessage()); |
| 234 |
return false; |
| 235 |
} |
| 236 |
|
| 237 |
// in case root has no SRS:
|
| 238 |
avoidEmptySRSInRoot(); |
| 239 |
|
| 240 |
return true; |
| 241 |
} |
| 242 |
|
| 243 |
private void avoidEmptySRSInRoot() { |
| 244 |
|
| 245 |
if (root == null) |
| 246 |
return;
|
| 247 |
if (root.getAvailableSRS().length > 0) |
| 248 |
return;
|
| 249 |
|
| 250 |
logger |
| 251 |
.debug("Root layer has no SRS array. Those of its first-level children will be added...");
|
| 252 |
|
| 253 |
int cnt = root.getChildrenCount();
|
| 254 |
for (int i = (cnt - 1); i >= 0; i--) { |
| 255 |
WMSLayerDescription desc = root.getChild(i); |
| 256 |
String[] ava_srs = desc.getAvailableSRS(); |
| 257 |
for (int j = 0; j < ava_srs.length; j++) { |
| 258 |
String item_srs = ava_srs[j];
|
| 259 |
Rectangle2D ext = desc.getExtentForSRS(item_srs);
|
| 260 |
root.increaseExtentForSRS(item_srs, ext); |
| 261 |
} |
| 262 |
} |
| 263 |
} |
| 264 |
|
| 265 |
private String buildCapabilitiesRequest(String h, String v, String sym) { |
| 266 |
return h + sym + "REQUEST=GetCapabilities&SERVICE=WMS&VERSION=" + v |
| 267 |
+ "&EXCEPTIONS=XML";
|
| 268 |
} |
| 269 |
|
| 270 |
private void clear() { |
| 271 |
infoable = false;
|
| 272 |
root = new WMSLayerDescription(0, null); |
| 273 |
formats.clear(); |
| 274 |
infoFormats.clear(); |
| 275 |
} |
| 276 |
|
| 277 |
protected String parseException(byte[] data) { |
| 278 |
ArrayList errors = new ArrayList(); |
| 279 |
KXmlParser kxmlParser = new KXmlParser();
|
| 280 |
try {
|
| 281 |
kxmlParser.setInput(new ByteArrayInputStream(data), encoding); |
| 282 |
kxmlParser.nextTag(); |
| 283 |
int tag;
|
| 284 |
if (kxmlParser.getEventType() != KXmlParser.END_DOCUMENT) {
|
| 285 |
kxmlParser.require(KXmlParser.START_TAG, null,
|
| 286 |
EXCEPTION_TAGS_EXCEPTION_ROOT); |
| 287 |
tag = kxmlParser.nextTag(); |
| 288 |
while (tag != KXmlParser.END_DOCUMENT) {
|
| 289 |
switch (tag) {
|
| 290 |
case KXmlParser.START_TAG:
|
| 291 |
if (kxmlParser.getName().compareTo(
|
| 292 |
EXCEPTION_TAGS_SERVICE_EXCEPTION) == 0) {
|
| 293 |
String errorCode = kxmlParser.getAttributeValue("", |
| 294 |
EXCEPTION_TAGS_CODE); |
| 295 |
errorCode = (errorCode != null) ? "[" + errorCode |
| 296 |
+ "] " : ""; |
| 297 |
String errorMessage = kxmlParser.nextText();
|
| 298 |
errors.add(errorCode + errorMessage); |
| 299 |
} |
| 300 |
break;
|
| 301 |
case KXmlParser.END_TAG:
|
| 302 |
break;
|
| 303 |
|
| 304 |
} |
| 305 |
tag = kxmlParser.nextTag(); |
| 306 |
} |
| 307 |
//kxmlParser.require(KXmlParser.END_DOCUMENT, null, null);
|
| 308 |
} |
| 309 |
} catch (XmlPullParserException parser_ex) {
|
| 310 |
parser_ex.printStackTrace(); |
| 311 |
} catch (IOException ioe) { |
| 312 |
ioe.printStackTrace(); |
| 313 |
} |
| 314 |
String message = errors.size() > 0 ? "" : null; |
| 315 |
for (int i = 0; i < errors.size(); i++) { |
| 316 |
message += (String) errors.get(i) + "\n"; |
| 317 |
} |
| 318 |
return message;
|
| 319 |
} |
| 320 |
|
| 321 |
/**
|
| 322 |
* Closes the protocol handler. Currently empty.
|
| 323 |
*
|
| 324 |
*/
|
| 325 |
public void close() { |
| 326 |
// your code here
|
| 327 |
} |
| 328 |
|
| 329 |
/**
|
| 330 |
* Tag used when parsing WMS responses
|
| 331 |
*/
|
| 332 |
public final static String EXCEPTION_TAGS_EXCEPTION_ROOT = "ServiceExceptionReport"; |
| 333 |
/**
|
| 334 |
* Tag used when parsing WMS responses
|
| 335 |
*/
|
| 336 |
public final static String EXCEPTION_TAGS_SERVICE_EXCEPTION = "ServiceException"; |
| 337 |
/**
|
| 338 |
* Tag used when parsing WMS responses
|
| 339 |
*/
|
| 340 |
public final static String EXCEPTION_TAGS_CODE = "code"; |
| 341 |
|
| 342 |
/**
|
| 343 |
* Main parse method.
|
| 344 |
*
|
| 345 |
* @param f file to be parsed
|
| 346 |
*/
|
| 347 |
private void parse(File f) { |
| 348 |
|
| 349 |
FileReader reader = null; |
| 350 |
try {
|
| 351 |
reader = new FileReader(f); |
| 352 |
|
| 353 |
// FileInputStream fis = new FileInputStream(f);
|
| 354 |
// InputStreamReader reader = new InputStreamReader(fis,"ISO-8859-1");
|
| 355 |
// BufferedReader br = new BufferedReader(reader);
|
| 356 |
|
| 357 |
char[] buffer = new char[100]; |
| 358 |
reader.read(buffer); |
| 359 |
StringBuffer strBuff = new StringBuffer(); |
| 360 |
strBuff.append(buffer); |
| 361 |
String auxStr = strBuff.toString().toLowerCase();
|
| 362 |
int a = auxStr.toLowerCase().indexOf("<?xml"); |
| 363 |
if (a != -1) |
| 364 |
auxStr = auxStr.substring(a, auxStr.length()); |
| 365 |
|
| 366 |
StringBuffer st = new StringBuffer(auxStr); |
| 367 |
String searchText = "encoding=\""; |
| 368 |
int index = st.indexOf(searchText);
|
| 369 |
|
| 370 |
if (index > -1) { |
| 371 |
st.delete(0, index + searchText.length());
|
| 372 |
encoding = st.substring(0, st.indexOf("\"")); |
| 373 |
} |
| 374 |
|
| 375 |
reader.close(); |
| 376 |
|
| 377 |
} catch (Exception ex) { |
| 378 |
logger.error("In main parse method: " + ex.getMessage());
|
| 379 |
} |
| 380 |
|
| 381 |
int tag;
|
| 382 |
KXmlParser kxmlParser = null;
|
| 383 |
kxmlParser = new KXmlParser();
|
| 384 |
try {
|
| 385 |
// reader = new FileReader(f);
|
| 386 |
// // FileInputStream fis = new FileInputStream(f);
|
| 387 |
// // InputStreamReader reader = new InputStreamReader(fis,"ISO-8859-1");
|
| 388 |
// // BufferedReader br = new BufferedReader(reader);
|
| 389 |
// // patch for ArcIMS + WMS connector > 9.0 bug
|
| 390 |
//
|
| 391 |
// char[] buffer = new char[(int) f.length()];
|
| 392 |
//
|
| 393 |
// logger.debug("PHONEME - buffer.len = " + buffer.length);
|
| 394 |
//
|
| 395 |
// reader.read(buffer);
|
| 396 |
//
|
| 397 |
// StringBuffer strBuff = new StringBuffer();
|
| 398 |
// strBuff.append(buffer);
|
| 399 |
// String auxStr = strBuff.toString();
|
| 400 |
//
|
| 401 |
// logger.debug("PHONEME - auxStr = " + auxStr);
|
| 402 |
// // String string = new String(buffer);
|
| 403 |
//
|
| 404 |
// int a = auxStr.toLowerCase().indexOf("<?xml");
|
| 405 |
//
|
| 406 |
// logger.debug("PHONEME - a = " + a);
|
| 407 |
//
|
| 408 |
// if (a != -1) {
|
| 409 |
// auxStr = auxStr.substring(a, auxStr.length());
|
| 410 |
// logger.debug("PHONEME - auxStr = " + auxStr);
|
| 411 |
// kxmlParser.setInput(new StringReader(auxStr));
|
| 412 |
// } else
|
| 413 |
// // end patch
|
| 414 |
// kxmlParser.setInput(new FileInputStream(f), encoding);
|
| 415 |
|
| 416 |
|
| 417 |
FileInputStream fir = new FileInputStream(f); |
| 418 |
kxmlParser.setInput(fir, encoding); |
| 419 |
|
| 420 |
|
| 421 |
logger.debug("PHONEME - kxmlParser.nextTag();");
|
| 422 |
|
| 423 |
kxmlParser.nextTag(); |
| 424 |
if (kxmlParser.getEventType() != KXmlParser.END_DOCUMENT) {
|
| 425 |
kxmlParser.require(KXmlParser.START_TAG, null,
|
| 426 |
CapabilitiesTags.CAPABILITIES_ROOT1_1_1); |
| 427 |
tag = kxmlParser.nextTag(); |
| 428 |
while (tag != KXmlParser.END_DOCUMENT) {
|
| 429 |
switch (tag) {
|
| 430 |
|
| 431 |
case KXmlParser.START_TAG:
|
| 432 |
if (kxmlParser.getName().compareTo(
|
| 433 |
CapabilitiesTags.SERVICE) == 0) {
|
| 434 |
// parseServiceTag(kxmlParser);
|
| 435 |
} else if (kxmlParser.getName().compareTo( |
| 436 |
CapabilitiesTags.CAPABILITY) == 0) {
|
| 437 |
parseCapabilityTag(kxmlParser); |
| 438 |
} |
| 439 |
break;
|
| 440 |
case KXmlParser.END_TAG:
|
| 441 |
break;
|
| 442 |
case KXmlParser.TEXT:
|
| 443 |
break;
|
| 444 |
} |
| 445 |
tag = kxmlParser.next(); |
| 446 |
} |
| 447 |
kxmlParser.require(KXmlParser.END_DOCUMENT, null, null); |
| 448 |
fir.close(); |
| 449 |
} |
| 450 |
} catch (XmlPullParserException parser_ex) {
|
| 451 |
logger.error("Parser exception: " + parser_ex.getMessage());
|
| 452 |
} catch (IOException ioe) { |
| 453 |
logger.error("IO exception: " + ioe.getMessage());
|
| 454 |
} finally {
|
| 455 |
|
| 456 |
} |
| 457 |
// In the parsing process the layer has been filled
|
| 458 |
} |
| 459 |
|
| 460 |
/**
|
| 461 |
* <p>Parses the Service Information </p>
|
| 462 |
*/
|
| 463 |
|
| 464 |
/*
|
| 465 |
private void parseServiceTag(KXmlParser parser) throws IOException, XmlPullParserException
|
| 466 |
{
|
| 467 |
int currentTag;
|
| 468 |
boolean end = false;
|
| 469 |
|
| 470 |
parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.SERVICE);
|
| 471 |
currentTag = parser.next();
|
| 472 |
|
| 473 |
while (!end)
|
| 474 |
{
|
| 475 |
switch(currentTag)
|
| 476 |
{
|
| 477 |
case KXmlParser.START_TAG:
|
| 478 |
if (parser.getName().compareTo(CapabilitiesTags.NAME)==0)
|
| 479 |
{
|
| 480 |
serviceInfo.name = parser.nextText();
|
| 481 |
}
|
| 482 |
else if (parser.getName().compareTo(CapabilitiesTags.TITLE)==0)
|
| 483 |
{
|
| 484 |
serviceInfo.title = parser.nextText();
|
| 485 |
}
|
| 486 |
else if (parser.getName().compareTo(CapabilitiesTags.ABSTRACT)==0)
|
| 487 |
{
|
| 488 |
serviceInfo.abstr = parser.nextText();
|
| 489 |
}
|
| 490 |
else if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0)
|
| 491 |
{
|
| 492 |
String value = new String();
|
| 493 |
value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
|
| 494 |
if (value != null){
|
| 495 |
serviceInfo.online_resource = value;
|
| 496 |
}
|
| 497 |
}
|
| 498 |
else if ((parser.getName().compareTo(CapabilitiesTags.KEYWORDLIST)==0) ||
|
| 499 |
(parser.getName().compareTo(CapabilitiesTags.CONTACTINFORMATION)==0))
|
| 500 |
{
|
| 501 |
parser.skipSubTree();
|
| 502 |
}
|
| 503 |
break;
|
| 504 |
case KXmlParser.END_TAG:
|
| 505 |
if (parser.getName().compareTo(CapabilitiesTags.SERVICE) == 0)
|
| 506 |
end = true;
|
| 507 |
break;
|
| 508 |
case KXmlParser.TEXT:
|
| 509 |
break;
|
| 510 |
}
|
| 511 |
if (!end)
|
| 512 |
currentTag = parser.next();
|
| 513 |
}
|
| 514 |
parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.SERVICE);
|
| 515 |
}
|
| 516 |
*/
|
| 517 |
|
| 518 |
/**
|
| 519 |
* <p>Parses the Capability Tag </p>
|
| 520 |
*/
|
| 521 |
private void parseCapabilityTag(KXmlParser parser) throws IOException, |
| 522 |
XmlPullParserException {
|
| 523 |
int currentTag;
|
| 524 |
boolean end = false; |
| 525 |
|
| 526 |
parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITY);
|
| 527 |
currentTag = parser.next(); |
| 528 |
|
| 529 |
while (!end) {
|
| 530 |
switch (currentTag) {
|
| 531 |
case KXmlParser.START_TAG:
|
| 532 |
if (parser.getName().compareTo(CapabilitiesTags.REQUEST) == 0) { |
| 533 |
parseRequestTag(parser); |
| 534 |
} else if (parser.getName().compareTo( |
| 535 |
CapabilitiesTags.EXCEPTION) == 0) {
|
| 536 |
//TODO:
|
| 537 |
//Add to serviceInfo the supported formats for the exceptions????
|
| 538 |
} else if (parser.getName().compareTo(CapabilitiesTags.LAYER) == 0) { |
| 539 |
int curr_tag = root.parseAsRoot(parser);
|
| 540 |
end = ((parser.getName().compareTo( |
| 541 |
CapabilitiesTags.CAPABILITY) == 0) && (curr_tag == KXmlParser.END_TAG));
|
| 542 |
} else if ((parser.getName().compareTo( |
| 543 |
CapabilitiesTags.VENDORSPECIFICCAPABILITIES) == 0)
|
| 544 |
|| (parser.getName().compareTo( |
| 545 |
CapabilitiesTags.USERDEFINEDSYMBOLIZATION) == 0)
|
| 546 |
|| (parser.getName().compareTo(CapabilitiesTags.STYLE) == 0))
|
| 547 |
|
| 548 |
{
|
| 549 |
parser.skipSubTree(); |
| 550 |
} |
| 551 |
break;
|
| 552 |
case KXmlParser.END_TAG:
|
| 553 |
if (parser.getName().compareTo(CapabilitiesTags.CAPABILITY) == 0) |
| 554 |
end = true;
|
| 555 |
break;
|
| 556 |
case KXmlParser.TEXT:
|
| 557 |
break;
|
| 558 |
} |
| 559 |
if (!end)
|
| 560 |
currentTag = parser.next(); |
| 561 |
} |
| 562 |
//parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.CAPABILITY);
|
| 563 |
} |
| 564 |
|
| 565 |
/**
|
| 566 |
* <p>Parses the Request tag </p>
|
| 567 |
*/
|
| 568 |
private void parseRequestTag(KXmlParser parser) throws IOException, |
| 569 |
XmlPullParserException {
|
| 570 |
int currentTag;
|
| 571 |
boolean end = false; |
| 572 |
|
| 573 |
parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.REQUEST);
|
| 574 |
currentTag = parser.next(); |
| 575 |
|
| 576 |
while (!end) {
|
| 577 |
switch (currentTag) {
|
| 578 |
case KXmlParser.START_TAG:
|
| 579 |
if (parser.getName().compareTo(CapabilitiesTags.GETMAP) == 0) { |
| 580 |
parseGetMapTag(parser); |
| 581 |
} else if (parser.getName().compareTo( |
| 582 |
CapabilitiesTags.GETFEATUREINFO) == 0) {
|
| 583 |
infoable = true;
|
| 584 |
parseGetFeatureInfoTag(parser); |
| 585 |
} |
| 586 |
break;
|
| 587 |
case KXmlParser.END_TAG:
|
| 588 |
if (parser.getName().compareTo(CapabilitiesTags.REQUEST) == 0) |
| 589 |
end = true;
|
| 590 |
break;
|
| 591 |
case KXmlParser.TEXT:
|
| 592 |
break;
|
| 593 |
} |
| 594 |
if (!end)
|
| 595 |
currentTag = parser.next(); |
| 596 |
} |
| 597 |
// TODO: does not get such a tag when arrives here!!!!!!
|
| 598 |
//parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.REQUEST);
|
| 599 |
} |
| 600 |
|
| 601 |
/**
|
| 602 |
* <p>Parses the GetMap tag </p>
|
| 603 |
*/
|
| 604 |
private void parseGetMapTag(KXmlParser parser) throws IOException, |
| 605 |
XmlPullParserException {
|
| 606 |
int currentTag;
|
| 607 |
boolean end = false; |
| 608 |
|
| 609 |
parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETMAP);
|
| 610 |
currentTag = parser.next(); |
| 611 |
|
| 612 |
while (!end) {
|
| 613 |
switch (currentTag) {
|
| 614 |
case KXmlParser.START_TAG:
|
| 615 |
if (parser.getName().compareTo(CapabilitiesTags.FORMAT) == 0) { |
| 616 |
String f = parser.nextText();
|
| 617 |
if (validFormat(f)) {
|
| 618 |
formats.add(f); |
| 619 |
} |
| 620 |
|
| 621 |
} |
| 622 |
/*
|
| 623 |
else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0)
|
| 624 |
{
|
| 625 |
currentTag = parser.nextTag();
|
| 626 |
if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0)
|
| 627 |
{
|
| 628 |
currentTag = parser.nextTag();
|
| 629 |
if(parser.getName().compareTo(CapabilitiesTags.GET)==0)
|
| 630 |
{
|
| 631 |
currentTag = parser.nextTag();
|
| 632 |
if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0)
|
| 633 |
{
|
| 634 |
String value = new String();
|
| 635 |
value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
|
| 636 |
if (value != null){
|
| 637 |
serviceInfo.operations.put(CapabilitiesTags.GETMAP, value);
|
| 638 |
}
|
| 639 |
}
|
| 640 |
}
|
| 641 |
}
|
| 642 |
}
|
| 643 |
*/
|
| 644 |
break;
|
| 645 |
case KXmlParser.END_TAG:
|
| 646 |
if (parser.getName().compareTo(CapabilitiesTags.GETMAP) == 0) |
| 647 |
end = true;
|
| 648 |
break;
|
| 649 |
case KXmlParser.TEXT:
|
| 650 |
break;
|
| 651 |
} |
| 652 |
if (!end)
|
| 653 |
currentTag = parser.next(); |
| 654 |
} |
| 655 |
} |
| 656 |
|
| 657 |
private boolean validFormat(String f) { |
| 658 |
|
| 659 |
String format = f.toLowerCase();
|
| 660 |
if (format.indexOf("jpg") != -1) |
| 661 |
return true; |
| 662 |
if (format.indexOf("jpeg") != -1) |
| 663 |
return true; |
| 664 |
if (format.indexOf("gif") != -1) |
| 665 |
return true; |
| 666 |
if (format.indexOf("png") != -1) |
| 667 |
return true; |
| 668 |
return false; |
| 669 |
} |
| 670 |
|
| 671 |
/**
|
| 672 |
* <p>Parses the GetFeatureInfoTag tag </p>
|
| 673 |
*/
|
| 674 |
|
| 675 |
private void parseGetFeatureInfoTag(KXmlParser parser) throws IOException, |
| 676 |
XmlPullParserException {
|
| 677 |
int currentTag;
|
| 678 |
boolean end = false; |
| 679 |
|
| 680 |
parser.require(KXmlParser.START_TAG, null,
|
| 681 |
CapabilitiesTags.GETFEATUREINFO); |
| 682 |
currentTag = parser.next(); |
| 683 |
|
| 684 |
while (!end) {
|
| 685 |
switch (currentTag) {
|
| 686 |
case KXmlParser.START_TAG:
|
| 687 |
if (parser.getName().compareTo(CapabilitiesTags.FORMAT) == 0) { |
| 688 |
//TODO:
|
| 689 |
// add the supported formats by the GetFeatureInfo request
|
| 690 |
infoFormats.add(parser.nextText()); |
| 691 |
//serviceInfo.formats.add(parser.nextText());
|
| 692 |
} |
| 693 |
/*
|
| 694 |
else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0)
|
| 695 |
{
|
| 696 |
currentTag = parser.nextTag();
|
| 697 |
if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0)
|
| 698 |
{
|
| 699 |
currentTag = parser.nextTag();
|
| 700 |
if(parser.getName().compareTo(CapabilitiesTags.GET)==0)
|
| 701 |
{
|
| 702 |
currentTag = parser.nextTag();
|
| 703 |
if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0)
|
| 704 |
{
|
| 705 |
String value = new String();
|
| 706 |
value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
|
| 707 |
if (value != null){
|
| 708 |
serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, value);
|
| 709 |
}
|
| 710 |
}
|
| 711 |
}
|
| 712 |
}
|
| 713 |
}
|
| 714 |
*/
|
| 715 |
break;
|
| 716 |
case KXmlParser.END_TAG:
|
| 717 |
if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO) == 0) |
| 718 |
end = true;
|
| 719 |
break;
|
| 720 |
case KXmlParser.TEXT:
|
| 721 |
break;
|
| 722 |
} |
| 723 |
if (!end)
|
| 724 |
currentTag = parser.next(); |
| 725 |
} |
| 726 |
} |
| 727 |
|
| 728 |
/**
|
| 729 |
* Utility method to find out the convenient path separator symbol for a given url string.
|
| 730 |
* @param url the URL of interest
|
| 731 |
* @return the convenient path separator symbol
|
| 732 |
*/
|
| 733 |
public static String getSymbol(String url) { |
| 734 |
|
| 735 |
String symbol;
|
| 736 |
|
| 737 |
if (url.indexOf("?") == -1) |
| 738 |
symbol = "?";
|
| 739 |
else if (url.indexOf("?") != url.length() - 1) |
| 740 |
symbol = "&";
|
| 741 |
else
|
| 742 |
symbol = "";
|
| 743 |
|
| 744 |
return symbol;
|
| 745 |
} |
| 746 |
|
| 747 |
private static String getVersionQueryRequest(String _host) { |
| 748 |
|
| 749 |
String req = ""; |
| 750 |
String symbol = getSymbol(_host);
|
| 751 |
req = req + _host + symbol + "REQUEST=GetCapabilities&SERVICE=WMS&";
|
| 752 |
req += ("&EXCEPTIONS=XML");
|
| 753 |
return req;
|
| 754 |
} |
| 755 |
|
| 756 |
/**
|
| 757 |
* Sends a GetCapabilities to the WMS server to get the version
|
| 758 |
* if the version parameter is null, the WMS will return the highest version supported
|
| 759 |
* if not it will return the lower highest version than the one requested.
|
| 760 |
* @param host host URL
|
| 761 |
* @return suitable version supported by the server
|
| 762 |
*/
|
| 763 |
public static String getSuitableWMSVersion(URL host) |
| 764 |
throws BadWMSResponseException {
|
| 765 |
|
| 766 |
String request = getVersionQueryRequest(host.toString());
|
| 767 |
String version = ""; |
| 768 |
|
| 769 |
byte[] version_bytes = null; |
| 770 |
|
| 771 |
try {
|
| 772 |
|
| 773 |
URL req_url = new URL(request); |
| 774 |
|
| 775 |
version_bytes = (byte[]) Downloader.downloadObjectCancel(req_url, |
| 776 |
"", DownloadTask.BYTE_ARRAY, "", "", false); |
| 777 |
|
| 778 |
} catch (Exception ex) { |
| 779 |
|
| 780 |
logger.error("While getting version request response: "
|
| 781 |
+ ex.getMessage()); |
| 782 |
throw new BadWMSResponseException(ex.getMessage()); |
| 783 |
} |
| 784 |
|
| 785 |
String response = new String(version_bytes); |
| 786 |
|
| 787 |
int a = response.toLowerCase().indexOf("<?xml"); |
| 788 |
if (a != -1) { |
| 789 |
response = response.substring(a, response.length()); |
| 790 |
} |
| 791 |
|
| 792 |
StringReader reader = new StringReader(response); |
| 793 |
KXmlParser kxmlParser = null;
|
| 794 |
kxmlParser = new KXmlParser();
|
| 795 |
|
| 796 |
try {
|
| 797 |
kxmlParser.setInput(reader); |
| 798 |
kxmlParser.nextTag(); |
| 799 |
|
| 800 |
if (kxmlParser.getEventType() != KXmlParser.END_DOCUMENT) {
|
| 801 |
if ((kxmlParser.getName().compareTo(
|
| 802 |
CapabilitiesTags.CAPABILITIES_ROOT1_1_0) == 0)
|
| 803 |
|| (kxmlParser.getName().compareTo( |
| 804 |
CapabilitiesTags.CAPABILITIES_ROOT1_1_1) == 0)
|
| 805 |
|| (kxmlParser.getName().compareTo( |
| 806 |
CapabilitiesTags.CAPABILITIES_ROOT1_3_0) == 0)) {
|
| 807 |
version = kxmlParser.getAttributeValue("",
|
| 808 |
CapabilitiesTags.VERSION); |
| 809 |
} |
| 810 |
} |
| 811 |
// do not forget to close the Stream.
|
| 812 |
reader.close(); |
| 813 |
|
| 814 |
if (version.length() == 0) { |
| 815 |
throw new BadWMSResponseException("No WMS version found."); |
| 816 |
} |
| 817 |
|
| 818 |
return version;
|
| 819 |
|
| 820 |
} catch (Exception ex) { |
| 821 |
logger.error("While parsing version request response: "
|
| 822 |
+ ex.getMessage()); |
| 823 |
throw new BadWMSResponseException(ex.getMessage()); |
| 824 |
} finally {
|
| 825 |
if (reader != null) { |
| 826 |
reader.close(); |
| 827 |
} |
| 828 |
} |
| 829 |
} |
| 830 |
|
| 831 |
/**
|
| 832 |
* This method excludes from a comma separated string of IDs, the ones that are not infoable.
|
| 833 |
* It is used for querying only on queriable layers, and prevents empty responses on some
|
| 834 |
* WMS servers.
|
| 835 |
*
|
| 836 |
* @param all_csv comma separated string of all layers requested by the user
|
| 837 |
* @param root the layer description object of the root layer
|
| 838 |
* @param getname whether we wanrt to get the names or the IDs of the layers
|
| 839 |
* @return a comma separated string with the IDs or names of the queryable layers
|
| 840 |
*/
|
| 841 |
public static String leaveInfoable(String all_csv, |
| 842 |
WMSLayerDescription root, boolean getname) {
|
| 843 |
|
| 844 |
String[] all_array = StringUtilities.split(all_csv, ","); |
| 845 |
ArrayList resp = new ArrayList(); |
| 846 |
addRecursiveYourselfIfPresent(root, all_array, resp, getname); |
| 847 |
|
| 848 |
String _resp = null; |
| 849 |
int sz = resp.size();
|
| 850 |
if (sz > 0) { |
| 851 |
_resp = "";
|
| 852 |
for (int i = 0; i < sz; i++) |
| 853 |
_resp = _resp + "," + ((String) resp.get(i)); |
| 854 |
_resp = _resp.substring(1);
|
| 855 |
} |
| 856 |
return _resp;
|
| 857 |
|
| 858 |
} |
| 859 |
|
| 860 |
private static void addRecursiveYourselfIfPresent(WMSLayerDescription desc, |
| 861 |
String[] sel, ArrayList resp, boolean getname) { |
| 862 |
|
| 863 |
if (desc.isInfoable() && isOneOf(desc.getLayerId(), sel)) {
|
| 864 |
if (getname) {
|
| 865 |
// name
|
| 866 |
resp.add(desc.getLayerName()); |
| 867 |
} else {
|
| 868 |
// id
|
| 869 |
resp.add(desc.getLayerId()); |
| 870 |
} |
| 871 |
|
| 872 |
} |
| 873 |
|
| 874 |
for (int i = 0; i < desc.getChildrenCount(); i++) { |
| 875 |
addRecursiveYourselfIfPresent(desc.getChild(i), sel, resp, getname); |
| 876 |
} |
| 877 |
} |
| 878 |
|
| 879 |
|
| 880 |
|
| 881 |
private static void addRecursiveYourselfIfPresentNew(WMSLayerDescription desc, |
| 882 |
String[] sel, ArrayList resp, boolean getname) { |
| 883 |
|
| 884 |
if (isOneOf(desc.getLayerId(), sel)) {
|
| 885 |
|
| 886 |
if (desc.isInfoable()) {
|
| 887 |
if (getname) {
|
| 888 |
resp.add(desc.getLayerName()); // name
|
| 889 |
} else {
|
| 890 |
resp.add(desc.getLayerId()); // id
|
| 891 |
} |
| 892 |
} |
| 893 |
addAllInfoableChildren(desc, resp, getname); |
| 894 |
|
| 895 |
} else {
|
| 896 |
|
| 897 |
// ---------- search children
|
| 898 |
for (int i = 0; i < desc.getChildrenCount(); i++) { |
| 899 |
addRecursiveYourselfIfPresentNew(desc.getChild(i), sel, resp, getname); |
| 900 |
} |
| 901 |
|
| 902 |
} |
| 903 |
|
| 904 |
} |
| 905 |
|
| 906 |
private static void addAllInfoableChildren( |
| 907 |
WMSLayerDescription desc, |
| 908 |
ArrayList resp,
|
| 909 |
boolean getname) {
|
| 910 |
|
| 911 |
for (int i = 0; i < desc.getChildrenCount(); i++) { |
| 912 |
|
| 913 |
WMSLayerDescription ch = desc.getChild(i); |
| 914 |
if (ch.isInfoable()) {
|
| 915 |
if (getname) {
|
| 916 |
resp.add(ch.getLayerName()); |
| 917 |
} else {
|
| 918 |
resp.add(ch.getLayerId()); |
| 919 |
} |
| 920 |
} |
| 921 |
addAllInfoableChildren(ch, resp, getname); |
| 922 |
} |
| 923 |
} |
| 924 |
|
| 925 |
private static boolean isOneOf(String str, String[] arr) { |
| 926 |
|
| 927 |
for (int i = 0; i < arr.length; i++) { |
| 928 |
if (str.compareTo(arr[i]) == 0) |
| 929 |
return true; |
| 930 |
} |
| 931 |
return false; |
| 932 |
|
| 933 |
} |
| 934 |
|
| 935 |
} |
| 936 |
|