001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/ogcwebservices/sos/getobservation/GetObservationDocument.java $
002
003 /*----------------------------------------------------------------------------
004 This file is part of deegree, http://deegree.org/
005 Copyright (C) 2001-2009 by:
006 Department of Geography, University of Bonn
007 and
008 lat/lon GmbH
009
010 This library is free software; you can redistribute it and/or modify it under
011 the terms of the GNU Lesser General Public License as published by the Free
012 Software Foundation; either version 2.1 of the License, or (at your option)
013 any later version.
014 This library is distributed in the hope that it will be useful, but WITHOUT
015 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
016 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
017 details.
018 You should have received a copy of the GNU Lesser General Public License
019 along with this library; if not, write to the Free Software Foundation, Inc.,
020 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
021
022 Contact information:
023
024 lat/lon GmbH
025 Aennchenstr. 19, 53177 Bonn
026 Germany
027 http://lat-lon.de/
028
029 Department of Geography, University of Bonn
030 Prof. Dr. Klaus Greve
031 Postfach 1147, 53001 Bonn
032 Germany
033 http://www.geographie.uni-bonn.de/deegree/
034
035 e-mail: info@deegree.org
036 ----------------------------------------------------------------------------*/
037 package org.deegree.ogcwebservices.sos.getobservation;
038
039 import java.io.IOException;
040 import java.net.URL;
041 import java.util.ArrayList;
042 import java.util.HashMap;
043 import java.util.Iterator;
044 import java.util.List;
045 import java.util.Map;
046
047 import javax.xml.transform.TransformerException;
048
049 import org.deegree.datatypes.QualifiedName;
050 import org.deegree.framework.log.ILogger;
051 import org.deegree.framework.log.LoggerFactory;
052 import org.deegree.framework.xml.XMLParsingException;
053 import org.deegree.framework.xml.XMLTools;
054 import org.deegree.model.filterencoding.ComparisonOperation;
055 import org.deegree.model.filterencoding.ComplexFilter;
056 import org.deegree.model.filterencoding.Filter;
057 import org.deegree.model.filterencoding.FilterConstructionException;
058 import org.deegree.model.filterencoding.LogicalOperation;
059 import org.deegree.model.filterencoding.Operation;
060 import org.deegree.model.filterencoding.OperationDefines;
061 import org.deegree.model.filterencoding.PropertyIsBetweenOperation;
062 import org.deegree.model.filterencoding.PropertyIsCOMPOperation;
063 import org.deegree.model.filterencoding.PropertyIsLikeOperation;
064 import org.deegree.model.filterencoding.PropertyIsNullOperation;
065 import org.deegree.model.filterencoding.PropertyName;
066 import org.deegree.model.filterencoding.SpatialOperation;
067 import org.deegree.model.spatialschema.Envelope;
068 import org.deegree.ogcbase.OGCDocument;
069 import org.deegree.ogcwebservices.OGCWebService;
070 import org.deegree.ogcwebservices.OGCWebServiceException;
071 import org.deegree.ogcwebservices.sos.WFSRequestGenerator;
072 import org.deegree.ogcwebservices.sos.WFSRequester;
073 import org.deegree.ogcwebservices.sos.XMLFactory;
074 import org.deegree.ogcwebservices.sos.XSLTransformer;
075 import org.deegree.ogcwebservices.sos.configuration.MeasurementConfiguration;
076 import org.deegree.ogcwebservices.sos.configuration.PlatformConfiguration;
077 import org.deegree.ogcwebservices.sos.configuration.SOSDeegreeParams;
078 import org.deegree.ogcwebservices.sos.configuration.SensorConfiguration;
079 import org.deegree.ogcwebservices.sos.configuration.SourceServerConfiguration;
080 import org.deegree.ogcwebservices.sos.om.Observation;
081 import org.deegree.ogcwebservices.sos.om.ObservationArray;
082 import org.w3c.dom.Document;
083 import org.w3c.dom.Node;
084 import org.xml.sax.SAXException;
085
086 /**
087 * get the observation data from the xsl transformed wfs requests
088 *
089 * @author <a href="mailto:mkulbe@lat-lon.de">Matthias Kulbe </a>
090 * @author last edited by: $Author: mschneider $
091 *
092 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
093 */
094 public class GetObservationDocument extends OGCDocument {
095
096 private static final long serialVersionUID = 4262217635140146058L;
097
098 private static final ILogger LOG = LoggerFactory.getLogger( XMLFactory.class );
099
100 private static final String XML_TEMPLATE = "GetObservationTemplate.xml";
101
102 /**
103 * @throws IOException
104 * @throws SAXException
105 */
106 public void createEmptyDocument()
107 throws IOException, SAXException {
108 URL url = GetObservationDocument.class.getResource( XML_TEMPLATE );
109 if ( url == null ) {
110 throw new IOException( "The resource '" + XML_TEMPLATE + " could not be found." );
111 }
112 load( url );
113 }
114
115 /**
116 * gets the data from sensors
117 *
118 * @param deegreeParams
119 * @param request
120 * @return the data
121 * @throws OGCWebServiceException
122 * @throws XMLParsingException
123 * @throws IOException
124 * @throws SAXException
125 * @throws TransformerException
126 */
127 public ObservationArray[] getObservations( SOSDeegreeParams deegreeParams, GetObservationRequest request )
128 throws OGCWebServiceException, XMLParsingException, TransformerException, IOException,
129 SAXException {
130
131 Envelope bbox = request.getBBox();
132 Object[] times = request.getTime();
133 Query query = request.getQuery();
134 String[] platforms = request.getPlatforms();
135 String[] sensors = request.getSensors();
136
137 ArrayList<String> sensorList = null;
138
139 if ( ( sensors.length < 1 ) && ( platforms.length < 1 ) ) {
140
141 String[] platformsInBbox = getPlatformsInBBoxFromServers( bbox,
142 deegreeParams.getSourceServerConfigurations(),
143 deegreeParams );
144
145 LOG.logDebug( "## found " + platformsInBbox.length + " platforms in bbox" );
146
147 String[] sensorsFromPlatforms = getSensorIdsFromPlatforms( platformsInBbox, deegreeParams );
148
149 LOG.logDebug( "## found " + sensorsFromPlatforms.length + " sensors in bbox" );
150
151 sensorList = new ArrayList<String>( sensorsFromPlatforms.length );
152 for ( int i = 0; i < sensorsFromPlatforms.length; i++ ) {
153 if ( !sensorList.contains( sensorsFromPlatforms[i] ) ) {
154 sensorList.add( sensorsFromPlatforms[i] );
155 }
156 }
157 } else {
158 LOG.logDebug( "info: found sensors and/or platforms" );
159 // checks the position in the bbox
160 boolean contains = areSensorsInBBox( bbox, sensors, platforms, deegreeParams );
161
162 if ( contains ) {
163 sensorList = new ArrayList<String>( 100 );
164 for ( int i = 0; i < sensors.length; i++ ) {
165 if ( !sensorList.contains( sensors[i] ) ) {
166 sensorList.add( sensors[i] );
167 }
168 }
169
170 String[] sensorsFromPlatforms = getSensorIdsFromPlatforms( platforms, deegreeParams );
171 for ( int i = 0; i < sensorsFromPlatforms.length; i++ ) {
172 if ( !sensorList.contains( sensorsFromPlatforms[i] ) ) {
173 sensorList.add( sensorsFromPlatforms[i] );
174 }
175 }
176 }
177 }
178
179 ArrayList<ObservationArray> observations = new ArrayList<ObservationArray>( sensorList.size() );
180
181 for ( int i = 0; i < sensorList.size(); i++ ) {
182 Document observationDocument = getObservationFromSensor( sensorList.get( i ), deegreeParams, times, query );
183
184 if ( observationDocument != null ) {
185 ObservationArray observationArray = getObservationsFromDocuments( observationDocument, bbox,
186 sensorList.get( i ) );
187 observations.add( observationArray );
188 }
189 }
190
191 LOG.logDebug( "-> have " + observations.size() + " observations collected" );
192
193 return observations.toArray( new ObservationArray[observations.size()] );
194 }
195
196 /**
197 * returns all platforms in the given bbox, but only from the given servers
198 *
199 * @param bbox
200 * @param servers
201 * @param params
202 * @return all platforms in the given bbox, but only from the given servers
203 */
204 private String[] getPlatformsInBBoxFromServers( Envelope bbox, SourceServerConfiguration[] servers,
205 SOSDeegreeParams params )
206 throws OGCWebServiceException {
207
208 ArrayList<Document> tPDResults = new ArrayList<Document>( servers.length );
209
210 try {
211 for ( int i = 0; i < servers.length; i++ ) {
212
213 // only if server can provide platformmetadata
214 if ( servers[i].havePlatformDescriptionData() ) {
215 Document request = WFSRequestGenerator.createBBoxWFSRequest(
216 bbox,
217 servers[i].getPlatformDescriptionFeatureType(),
218 servers[i].getPlatformDescriptionCoordPropertyName() );
219
220 Document result = WFSRequester.sendWFSrequest( request, servers[i].getDataService() );
221
222 if ( result != null ) {
223 URL pdxs = servers[i].getPlatformDescriptionXSLTScriptSource();
224 tPDResults.add( XSLTransformer.transformDocument( result, pdxs ) );
225 }
226 }
227
228 }
229 } catch ( Exception e ) {
230 LOG.logError( "could not access platforms in BBOX from DataService ", e );
231 throw new OGCWebServiceException( this.getClass().getName(),
232 "could not access platforms in BBOX from DataService " );
233 }
234
235 Document[] docs = tPDResults.toArray( new Document[tPDResults.size()] );
236
237 return getPlatformIdsFromPlatformDocs( docs, params );
238
239 }
240
241 /**
242 * returns the observationArray, with all observations, from a wfs result
243 *
244 * @param bbox
245 * @return the observationArray, with all observations, from a wfs result
246 * @throws XMLParsingException
247 */
248 private ObservationArray getObservationsFromDocuments( Document doc, Envelope bbox, String sensorId )
249 throws XMLParsingException {
250
251 List<Node> observations = XMLTools.getNodes( doc, "om:ObservationArray/om:observationMembers/gml:Observation",
252 nsContext );
253
254 if ( observations.size() < 1 ) {
255 LOG.logDebug( "warning: no observations found in document" );
256 }
257
258 ArrayList<Observation> observationsList = new ArrayList<Observation>( observations.size() );
259
260 for ( int i = 0; i < observations.size(); i++ ) {
261
262 String timeStamp = XMLTools.getRequiredNodeAsString( observations.get( i ),
263 "./gml:timeStamp/gml:TimeInstant/gml:timePosition",
264 nsContext );
265
266 String resultOf = XMLTools.getRequiredNodeAsString( observations.get( i ),
267 "./gml:resultOf/gml:QuantityList", nsContext );
268
269 observationsList.add( new Observation( timeStamp, resultOf ) );
270 }
271
272 LOG.logDebug( "-> ObservationArray created" );
273 Observation[] obs = new Observation[observationsList.size()];
274 obs = observationsList.toArray( obs );
275 return new ObservationArray( obs, bbox, sensorId );
276 }
277
278 /**
279 * gets the observation from a sensor, by requesting the correct wfs
280 *
281 * @param sensor
282 * @param params
283 * @return the document
284 */
285 private Document getObservationFromSensor( String sensor, SOSDeegreeParams params, Object[] times, Query query )
286 throws OGCWebServiceException {
287
288 try {
289 // query
290 MeasurementConfiguration measureConfig = null;
291 Operation filterOperation = null;
292
293 if ( query != null ) {
294 String queryFeature = query.getFeature();
295 measureConfig = params.getSensorConfiguration( sensor ).getMeasurementById( queryFeature );
296 if ( measureConfig == null ) {
297 throw new Exception( "warning: sensor not support the requested " + "observationFeature!" );
298 }
299
300 // gets the filter operations
301 if ( query.getFilter() != null ) {
302 LOG.logDebug( "-> QueryFilter found" );
303 Operation op = query.getFilter().getOperation();
304 filterOperation = modifyOperation( op, measureConfig );
305 }
306 } else {
307 // TODO
308 // I think this is a mistake and instead all measurements of a
309 // sensor has to requested from the WFS
310 LOG.logDebug( "warning: no query given, will use the default from sensor" );
311 measureConfig = params.getSensorConfiguration( sensor ).getFirstMeasurementConfiguration();
312 Filter filter = measureConfig.getConstraint();
313 if ( filter != null ) {
314 filterOperation = ( (ComplexFilter) filter ).getOperation();
315 }
316 }
317
318 Document request = WFSRequestGenerator.createObservationWFSRequest( times,
319 measureConfig.getFeatureTypeName(),
320 measureConfig.getTimePropertyName(),
321 filterOperation );
322
323 SensorConfiguration sc = params.getSensorConfiguration( sensor );
324 String ssID = sc.getFirstMeasurementConfiguration().getSourceServerId();
325 OGCWebService ows = params.getSourceServerConfiguration( ssID ).getDataService();
326
327 Document result = WFSRequester.sendWFSrequest( request, ows );
328
329 return XSLTransformer.transformDocument( result, measureConfig.getXSLTScriptSource() );
330 } catch ( Exception e ) {
331 LOG.logError( e.getMessage(), e );
332 throw new OGCWebServiceException( this.getClass().getName(), "could not access observations from sensor" );
333 }
334
335 }
336
337 /**
338 * gets all sensorIds from the given platforms
339 *
340 * @param platforms
341 * @param params
342 * @return the ids
343 */
344 private String[] getSensorIdsFromPlatforms( String[] platforms, SOSDeegreeParams params )
345 throws OGCWebServiceException {
346
347 // gets all servers which have to request
348 ArrayList<Document> transformedResultDocs = null;
349 try {
350 Map<String, ArrayList<String>> servers = new HashMap<String, ArrayList<String>>( platforms.length );
351
352 for ( int t = 0; t < platforms.length; t++ ) {
353 String sourceServerId = params.getPlatformConfiguration( platforms[t] ).getSourceServerId();
354
355 // server schon in liste; nur platform hinzuf�gen
356 if ( servers.containsKey( sourceServerId ) ) {
357 servers.get( sourceServerId ).add( platforms[t] );
358 }
359 // server nicht in liste; server hinzuf�gen und platform hinzuf�gen
360 else {
361 ArrayList<String> temp = new ArrayList<String>( 10 );
362 temp.add( platforms[t] );
363 servers.put( sourceServerId, temp );
364 }
365 }
366
367 transformedResultDocs = new ArrayList<Document>( servers.keySet().size() );
368
369 Iterator<String> iter = servers.keySet().iterator();
370 while ( iter.hasNext() ) {
371 String key = iter.next();
372 List<String> list = servers.get( key );
373
374 String[] idProps = new String[list.size()];
375 for ( int a = 0; a < list.size(); a++ ) {
376 idProps[a] = params.getPlatformConfiguration( list.get( a ) ).getIdPropertyValue();
377 }
378
379 QualifiedName pdft = params.getSourceServerConfiguration( key ).getPlatformDescriptionFeatureType();
380 QualifiedName pdid = params.getSourceServerConfiguration( key ).getPlatformDescriptionIdPropertyName();
381 Document request = WFSRequestGenerator.createIsLikeOperationWFSRequest( idProps, pdft, pdid );
382
383 OGCWebService ows = params.getSourceServerConfiguration( key ).getDataService();
384 Document result = WFSRequester.sendWFSrequest( request, ows );
385
386 if ( result != null ) {
387 SourceServerConfiguration ssc = params.getSourceServerConfiguration( key );
388 URL url = ssc.getPlatformDescriptionXSLTScriptSource();
389 transformedResultDocs.add( XSLTransformer.transformDocument( result, url ) );
390 }
391 }
392 } catch ( Exception e ) {
393 LOG.logError( e.getMessage(), e );
394 throw new OGCWebServiceException( this.getClass().getName(), "could not access sensorsIDs from platforms " );
395 }
396
397 Document[] docs = new Document[transformedResultDocs.size()];
398 docs = transformedResultDocs.toArray( docs );
399 return getSensorIdsFromCarriesInPlatformDoc( docs, params );
400 }
401
402 /**
403 * returns true if all Sensor and/or Platforms inside the given BBox
404 *
405 *
406 * @param bbox
407 * null is not allowed
408 * @param sensorIds
409 * @param platformIds
410 * @return <code>true</code> if all Sensor and/or Platforms inside the given BBox
411 * @throws IOException
412 * @throws XMLParsingException
413 * @throws TransformerException
414 * @throws IOException
415 * @throws SAXException
416 * @throws OGCWebServiceException
417 */
418 private boolean areSensorsInBBox( Envelope bbox, String[] sensorIds, String[] platformIds,
419 SOSDeegreeParams deegreeParams )
420 throws OGCWebServiceException, XMLParsingException, TransformerException, IOException,
421 SAXException {
422 if ( bbox == null ) {
423 throw new NullPointerException( "bbox must be set" );
424 }
425
426 // sensor and platforms
427 if ( ( sensorIds != null ) && ( platformIds != null ) ) {
428 if ( ( areSensorsInBBox( sensorIds, bbox, deegreeParams ) )
429 && ( arePlatformsInBBox( platformIds, bbox, deegreeParams ) ) ) {
430 return true;
431 }
432 } else if ( sensorIds != null && areSensorsInBBox( sensorIds, bbox, deegreeParams ) ) {
433 // only sensors
434 return true;
435 } else if ( platformIds != null && arePlatformsInBBox( platformIds, bbox, deegreeParams ) ) {
436 // only platforms
437 return true;
438 }
439
440 return false;
441 }
442
443 /**
444 * returns true, if the given sensors in bbox
445 *
446 * @param sensors
447 * @param bbox
448 * @param deegreeParams
449 * @return <code>true</code>, if the given sensors in bbox
450 * @throws OGCWebServiceException
451 * @throws XMLParsingException
452 * @throws TransformerException
453 * @throws IOException
454 * @throws SAXException
455 */
456 private boolean areSensorsInBBox( String[] sensors, Envelope bbox, SOSDeegreeParams deegreeParams )
457 throws OGCWebServiceException, XMLParsingException, TransformerException, IOException,
458 SAXException {
459
460 // gets all servers which have to request
461 Map<String, ArrayList<String>> servers = new HashMap<String, ArrayList<String>>( sensors.length );
462
463 for ( int t = 0; t < sensors.length; t++ ) {
464 String sourceServerId = deegreeParams.getSensorConfiguration( sensors[t] ).getSourceServerId();
465
466 if ( servers.containsKey( sourceServerId ) ) {
467 servers.get( sourceServerId ).add( sensors[t] );
468 } else {
469 ArrayList<String> temp = new ArrayList<String>();
470 temp.add( sensors[t] );
471 servers.put( sourceServerId, temp );
472 }
473
474 }
475
476 String[] keySet = servers.keySet().toArray( new String[servers.keySet().size()] );
477 ArrayList<Document> transformedWFSResults = new ArrayList<Document>( keySet.length );
478
479 // process all servers in the hashTable
480 for ( int i = 0; i < keySet.length; i++ ) {
481
482 Document result = getSensors( deegreeParams, servers, keySet, i );
483
484 // if the result is not null, transform it and add it to the result
485 // document list
486 if ( result != null ) {
487 SourceServerConfiguration ssc = deegreeParams.getSourceServerConfiguration( keySet[i] );
488 URL url = ssc.getSensorDescriptionXSLTScriptSource();
489 Document doc = XSLTransformer.transformDocument( result, url );
490 transformedWFSResults.add( doc );
491 }
492
493 }
494
495 Document[] docs = new Document[transformedWFSResults.size()];
496 docs = transformedWFSResults.toArray( docs );
497 String[] platformList = getPlatformIdsFromAttachedToInSensorDocs( docs, deegreeParams );
498
499 if ( arePlatformsInBBox( platformList, bbox, deegreeParams ) ) {
500 return true;
501 }
502 return false;
503 }
504
505 private Document getSensors( SOSDeegreeParams deegreeParams, Map<String, ArrayList<String>> servers,
506 String[] keySet, int i )
507 throws OGCWebServiceException {
508 Document result = null;
509 try {
510 String[] tmp = new String[servers.get( keySet[i] ).size()];
511 ArrayList<String> al = servers.get( keySet[i] );
512 String[] sensorIds = al.toArray( tmp );
513
514 String[] sensorIdPropertyValues = new String[sensorIds.length];
515
516 for ( int x = 0; x < sensorIds.length; x++ ) {
517 sensorIdPropertyValues[i] = deegreeParams.getSensorConfiguration( sensorIds[x] ).getIdPropertyValue();
518 }
519
520 SourceServerConfiguration ssc = deegreeParams.getSourceServerConfiguration( keySet[i] );
521 QualifiedName sdft = ssc.getSensorDescriptionFeatureType();
522 QualifiedName sdpn = ssc.getSensorDescriptionIdPropertyName();
523 // generates the request for the current wfs
524 Document request = WFSRequestGenerator.createIsLikeOperationWFSRequest( sensorIdPropertyValues, sdft, sdpn );
525 // sends the request to the current wfs
526 result = WFSRequester.sendWFSrequest( request, ssc.getDataService() );
527 } catch ( Exception e ) {
528 LOG.logError( e.getMessage(), e );
529 throw new OGCWebServiceException( this.getClass().getName(), "could not evaluate "
530 + "if platform is contained in BBOX" );
531 }
532 return result;
533 }
534
535 /**
536 * checks if the platforms inside the bbox
537 *
538 * @param platformIds
539 * @param bbox
540 * @return the check result
541 * @throws OGCWebServiceException
542 */
543 private boolean arePlatformsInBBox( String[] platformIds, Envelope bbox, SOSDeegreeParams deegreeParams )
544 throws OGCWebServiceException {
545
546 ArrayList<SourceServerConfiguration> serverConfigsList = new ArrayList<SourceServerConfiguration>();
547
548 // gets all platforms in bbox, only from neccessary servers
549 for ( int i = 0; i < platformIds.length; i++ ) {
550 String id = deegreeParams.getPlatformConfiguration( platformIds[i] ).getSourceServerId();
551 SourceServerConfiguration ssc = deegreeParams.getSourceServerConfiguration( id );
552 if ( !serverConfigsList.contains( ssc ) ) {
553 serverConfigsList.add( ssc );
554 }
555 }
556
557 SourceServerConfiguration[] ssc = new SourceServerConfiguration[serverConfigsList.size()];
558 ssc = serverConfigsList.toArray( ssc );
559 String[] platformsInBBox = getPlatformsInBBoxFromServers( bbox, ssc, deegreeParams );
560
561 // compares platforms in bbox with the given platforms
562 for ( int i = 0; i < platformIds.length; i++ ) {
563 boolean found = false;
564
565 for ( int a = 0; a < platformsInBBox.length; a++ ) {
566
567 if ( platformIds[i].equals( platformsInBBox[a] ) ) {
568
569 found = true;
570 }
571 }
572 if ( !found ) {
573 throw new OGCWebServiceException( "Sensor or Platform not in given bbox" );
574 }
575 }
576
577 return true;
578 }
579
580 /**
581 * gets all platformIds from attachedTo parts in SensorDescriptionDocuments
582 *
583 */
584 private String[] getPlatformIdsFromAttachedToInSensorDocs( Document[] docs, SOSDeegreeParams deegreeParams )
585 throws XMLParsingException {
586
587 ArrayList<String> platformIdList = new ArrayList<String>();
588
589 for ( int a = 0; a < docs.length; a++ ) {
590
591 List<Node> nl = XMLTools.getNodes( docs[a], "sml:Sensors/sml:Sensor", nsContext );
592
593 for ( int i = 0; i < nl.size(); i++ ) {
594 String platformIdPropertyValue = XMLTools.getNodeAsString( nl.get( i ),
595 "sml:attachedTo/sml:Component/text()",
596 nsContext, null );
597
598 PlatformConfiguration pc = deegreeParams.getPlatformConfigurationByIdPropertyValue( platformIdPropertyValue );
599
600 String platformId = null;
601 if ( pc != null ) {
602 platformId = pc.getId();
603 }
604
605 if ( platformId != null ) {
606 platformIdList.add( platformId );
607 }
608 }
609 }
610
611 return platformIdList.toArray( new String[platformIdList.size()] );
612 }
613
614 /**
615 * gets the platformIds from all PlatformDescriptionDocuments
616 *
617 */
618 private String[] getPlatformIdsFromPlatformDocs( Document[] docs, SOSDeegreeParams deegreeParams )
619 throws OGCWebServiceException {
620
621 if ( docs == null ) {
622 throw new NullPointerException( "null not allowed" );
623 }
624
625 ArrayList<String> platformIdList;
626 try {
627
628 platformIdList = new ArrayList<String>( docs.length );
629 for ( int a = 0; a < docs.length; a++ ) {
630
631 List<Node> itemsList = XMLTools.getNodes( docs[a], "sml:Platforms/sml:Platform", nsContext );
632 for ( int i = 0; i < itemsList.size(); i++ ) {
633 String platformIdPropertyValue = XMLTools.getRequiredNodeAsString( itemsList.get( i ), "@id",
634 nsContext );
635
636 PlatformConfiguration pc = deegreeParams.getPlatformConfigurationByIdPropertyValue( platformIdPropertyValue );
637
638 if ( pc != null ) {
639 platformIdList.add( pc.getId() );
640 }
641 }
642
643 }
644 } catch ( Exception e ) {
645 LOG.logError( e.getMessage(), e );
646 throw new OGCWebServiceException( this.getClass().getName(), "could not access " + "platform IDs" );
647 }
648
649 return platformIdList.toArray( new String[platformIdList.size()] );
650
651 }
652
653 /**
654 * gets all sensorSCSId's from the given platformDescription Document
655 *
656 */
657 private String[] getSensorIdsFromCarriesInPlatformDoc( Document[] docs, SOSDeegreeParams deegreeParams )
658 throws OGCWebServiceException {
659
660 try {
661 ArrayList<String> sensorIdList = new ArrayList<String>( 100 );
662
663 for ( int x = 0; x < docs.length; x++ ) {
664
665 List<Node> platformNodeList = XMLTools.getNodes( docs[x], "sml:Platforms/sml:Platform", nsContext );
666
667 for ( int i = 0; i < platformNodeList.size(); i++ ) {
668 List<Node> carriesNodeList = XMLTools.getNodes( platformNodeList.get( i ), "sml:carries", nsContext );
669
670 for ( int a = 0; a < carriesNodeList.size(); a++ ) {
671 String sensorIdPropertyValue = XMLTools.getRequiredNodeAsString( carriesNodeList.get( a ),
672 "sml:Asset/text()", nsContext );
673
674 if ( deegreeParams.getSensorConfigurationByIdPropertyValue( sensorIdPropertyValue ) != null ) {
675 String sensorId = deegreeParams.getSensorConfigurationByIdPropertyValue(
676 sensorIdPropertyValue ).getId();
677
678 if ( sensorId != null ) {
679 sensorIdList.add( sensorId );
680 }
681 }
682 }
683 }
684 }
685 return sensorIdList.toArray( new String[sensorIdList.size()] );
686 } catch ( Exception e ) {
687 LOG.logError( e.getMessage(), e );
688 throw new OGCWebServiceException( this.getClass().getName(),
689 "could not access sensor IDs carres in platform " );
690 }
691 }
692
693 /**
694 * returns the modified operation; modify the scs query to create the correct wfs querry
695 *
696 */
697 private Operation modifyOperation( Operation operation, MeasurementConfiguration measureConfig )
698 throws FilterConstructionException {
699
700 Operation op = null;
701 if ( operation instanceof LogicalOperation ) {
702 LOG.logDebug( "logical operation found" );
703 List<Operation> modOps = new ArrayList<Operation>();
704 List<Operation> ops = ( (LogicalOperation) operation ).getArguments();
705 for ( int i = 0; i < ops.size(); i++ ) {
706 modOps.add( modifyOperation( ops.get( i ), measureConfig ) );
707 }
708 op = new LogicalOperation( ( (LogicalOperation) operation ).getOperatorId(), modOps );
709 } else if ( operation instanceof ComparisonOperation ) {
710 LOG.logDebug( "comparison operation found" );
711 op = ( getModifiedComparisonOperation( (ComparisonOperation) operation, measureConfig ) );
712 } else if ( operation instanceof SpatialOperation ) {
713 LOG.logDebug( "spatial operation not supported!" );
714 }
715
716 Filter filter = measureConfig.getConstraint();
717 if ( filter != null ) {
718 // adds a predefined constraint taken from the measurements
719 // configuration
720 Operation constraint = ( (ComplexFilter) filter ).getOperation();
721 if ( op != null ) {
722 ArrayList<Operation> ar = new ArrayList<Operation>( 2 );
723 ar.add( constraint );
724 ar.add( op );
725 op = new LogicalOperation( OperationDefines.AND, ar );
726 } else {
727 op = constraint;
728 }
729 }
730
731 return op;
732 }
733
734 /**
735 * returns the modified ComparisonOperation
736 *
737 */
738 private Operation getModifiedComparisonOperation( ComparisonOperation compOp,
739 MeasurementConfiguration measuresConfig ) {
740
741 if ( compOp instanceof PropertyIsBetweenOperation ) {
742 LOG.logDebug( "PropertyIsBetweenOperation found" );
743 // FIXME if function is supported by your wfs; use it! instead of
744 // this
745 ArrayList<Operation> temp = new ArrayList<Operation>();
746 // set the lower boundary
747 temp.add( new PropertyIsCOMPOperation( OperationDefines.PROPERTYISGREATERTHAN,
748 new PropertyName( measuresConfig.getMeasurandPropertyName() ),
749 ( (PropertyIsBetweenOperation) compOp ).getLowerBoundary() ) );
750 // set the upper boundary
751 temp.add( new PropertyIsCOMPOperation( OperationDefines.PROPERTYISLESSTHAN,
752 new PropertyName( measuresConfig.getMeasurandPropertyName() ),
753 ( (PropertyIsBetweenOperation) compOp ).getUpperBoundary() ) );
754 return new LogicalOperation( OperationDefines.AND, temp );
755
756 } else if ( compOp instanceof PropertyIsCOMPOperation ) {
757 LOG.logDebug( "PropertyIsCompOperation found" );
758 // returns a PropertyIsCOMPOperation with modified PropertyName
759 return new PropertyIsCOMPOperation( compOp.getOperatorId(),
760 new PropertyName( measuresConfig.getMeasurandPropertyName() ),
761 ( (PropertyIsCOMPOperation) compOp ).getSecondExpression() );
762
763 } else if ( compOp instanceof PropertyIsLikeOperation ) {
764 LOG.logDebug( "PropertyIsLike found" );
765 // returns a PropertyIsLikeOperation with modified PropertyName
766 return new PropertyIsLikeOperation( new PropertyName( measuresConfig.getMeasurandPropertyName() ),
767 ( (PropertyIsLikeOperation) compOp ).getLiteral(),
768 ( (PropertyIsLikeOperation) compOp ).getWildCard(),
769 ( (PropertyIsLikeOperation) compOp ).getSingleChar(),
770 ( (PropertyIsLikeOperation) compOp ).getEscapeChar() );
771
772 } else if ( compOp instanceof PropertyIsNullOperation ) {
773 LOG.logDebug( "PropertyIsNull is not supported!" );
774 }
775
776 return null;
777 }
778 }