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52°North SOS Handler Module
/*
* Copyright (C) 2012-2018 52°North Initiative for Geospatial Open Source
* Software GmbH
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* If the program is linked with libraries which are licensed under one of
* the following licenses, the combination of the program with the linked
* library is not considered a "derivative work" of the program:
*
* - Apache License, version 2.0
* - Apache Software License, version 1.0
* - GNU Lesser General Public License, version 3
* - Mozilla Public License, versions 1.0, 1.1 and 2.0
* - Common Development and Distribution License (CDDL), version 1.0
*
* Therefore the distribution of the program linked with libraries licensed
* under the aforementioned licenses, is permitted by the copyright holders
* if the distribution is compliant with both the GNU General Public
* License version 2 and the aforementioned licenses.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*/
package org.n52.sos.ds;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import javax.inject.Inject;
import org.hibernate.Session;
import org.locationtech.jts.geom.Envelope;
import org.n52.iceland.exception.ows.concrete.NotYetSupportedException;
import org.n52.io.request.IoParameters;
import org.n52.series.db.DataAccessException;
import org.n52.series.db.HibernateSessionStore;
import org.n52.series.db.beans.FeatureEntity;
import org.n52.series.db.dao.DbQuery;
import org.n52.series.db.dao.FeatureDao;
import org.n52.shetland.ogc.filter.FilterConstants.SpatialOperator;
import org.n52.shetland.ogc.ows.exception.NoApplicableCodeException;
import org.n52.shetland.ogc.ows.exception.OwsExceptionReport;
import org.n52.shetland.ogc.sos.Sos1Constants;
import org.n52.shetland.ogc.sos.SosConstants;
import org.n52.shetland.ogc.sos.request.GetObservationRequest;
import org.n52.shetland.ogc.sos.response.GetObservationResponse;
import org.n52.sos.ds.dao.GetObservationDao;
import org.n52.sos.exception.ows.concrete.MissingObservedPropertyParameterException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
public class GetObservationHandler extends AbstractGetObservationHandler implements ApiQueryHelper {
private static final Logger LOGGER = LoggerFactory.getLogger(GetObservationHandler.class);
private HibernateSessionStore sessionStore;
private GetObservationDao dao;
@Inject
public void setConnectionProvider(HibernateSessionStore sessionStore) {
this.sessionStore = sessionStore;
}
@Inject
public void setGetObservationDao(GetObservationDao getObservationDao) {
this.dao = getObservationDao;
}
public GetObservationHandler() {
super(SosConstants.SOS);
}
@Override
public GetObservationResponse getObservation(GetObservationRequest request) throws OwsExceptionReport {
if (request.getVersion().equals(Sos1Constants.SERVICEVERSION) &&
request.getObservedProperties().isEmpty()) {
throw new MissingObservedPropertyParameterException();
}
if (request.isSetResultFilter()) {
throw new NotYetSupportedException("result filtering");
}
Session session = sessionStore.getSession();
try {
GetObservationResponse response = new GetObservationResponse();
response.setService(request.getService());
response.setVersion(request.getVersion());
response.setResponseFormat(request.getResponseFormat());
response.setResultModel(request.getResultModel());
List features = new FeatureDao(session).getAllInstances(createDbQuery(request));
if (features == null || features.isEmpty()) {
return response;
}
request.setFeatureIdentifiers(features.stream().map(f -> f.getIdentifier()).collect(Collectors.toList()));
dao.queryObservationData(request, response);
return response;
} catch (DataAccessException e) {
throw new NoApplicableCodeException().causedBy(e).withMessage(
"Error while querying data for GetObservation!");
} finally {
sessionStore.returnSession(session);
}
}
@Override
public boolean isSupported() {
return true;
}
private DbQuery createDbQuery(GetObservationRequest request) {
Map map = Maps.newHashMap();
if (request.isSetFeatureOfInterest()) {
map.put(IoParameters.FEATURES, listToString(request.getFeatureIdentifiers()));
}
if (request.isSetSpatialFilter() && !request.hasSpatialFilteringProfileSpatialFilter()) {
if (SpatialOperator.BBOX.equals(request.getSpatialFilter().getOperator())) {
if (request.getSpatialFilter().getGeometry().isGeometry() && request.getSpatialFilter().getGeometry().getGeometry().isPresent()) {
Envelope envelope = request.getSpatialFilter().getGeometry().getGeometry().get().getEnvelopeInternal();
if (envelope != null) {
List bbox = Lists.newArrayList();
bbox.add(envelope.getMinX());
bbox.add(envelope.getMinY());
bbox.add(envelope.getMaxX());
bbox.add(envelope.getMaxY());
map.put(IoParameters.BBOX, Joiner.on(",").join(bbox));
}
} else if (request.getSpatialFilter().getGeometry().isEnvelope() && request.getSpatialFilter().getGeometry().getEnvelope().isPresent()){
Envelope envelope = request.getSpatialFilter().getGeometry().getEnvelope().get().getEnvelope();
if (envelope != null) {
List bbox = Lists.newArrayList();
bbox.add(envelope.getMinX());
bbox.add(envelope.getMinY());
bbox.add(envelope.getMaxX());
bbox.add(envelope.getMaxY());
map.put(IoParameters.BBOX, Joiner.on(",").join(bbox));
}
}
}
}
map.put(IoParameters.MATCH_DOMAIN_IDS, Boolean.toString(true));
return new DbQuery(IoParameters.createFromSingleValueMap(map));
}
private Double[] toArray(double x, double y) {
Double[] array = new Double[2];
array[0] = x;
array[1] = y;
return array;
}
}