/**
* Copyright (C) 2007 - 2016 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.
*
* As an exception to the terms of the GPL, you may copy, modify,
* propagate, and distribute a work formed by combining 52°North WPS
* GeoTools Modules with the Eclipse Libraries, or a work derivative of
* such a combination, even if such copying, modification, propagation, or
* distribution would otherwise violate the terms of the GPL. Nothing in
* this exception exempts you from complying with the GPL in all respects
* for all of the code used other than the Eclipse Libraries. You may
* include this exception and its grant of permissions when you distribute
* 52°North WPS GeoTools Modules. Inclusion of this notice with such a
* distribution constitutes a grant of such permissions. If you do not wish
* to grant these permissions, remove this paragraph from your
* distribution. "52°North WPS GeoTools Modules" means the 52°North WPS
* modules using GeoTools functionality - software licensed under version 2
* or any later version of the GPL, or a work based on such software and
* licensed under the GPL. "Eclipse Libraries" means Eclipse Modeling
* Framework Project and XML Schema Definition software distributed by the
* Eclipse Foundation and licensed under the Eclipse Public License Version
* 1.0 ("EPL"), or a work based on such software and licensed under the EPL.
*
* 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.wps.server.algorithm.spatialquery;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.n52.wps.io.data.IData;
import org.n52.wps.io.data.binding.complex.GTVectorDataBinding;
import org.n52.wps.io.data.binding.literal.LiteralBooleanBinding;
import org.n52.wps.server.AbstractSelfDescribingAlgorithm;
import org.opengis.feature.simple.SimpleFeature;
import com.vividsolutions.jts.geom.Geometry;
/**
* @author Benjamin Pross (bpross-52n)
*
*/
public class IntersectsAlgorithm extends AbstractSelfDescribingAlgorithm {
Logger LOGGER = LoggerFactory.getLogger(IntersectsAlgorithm.class);
private final String inputID1 = "LAYER1";
private final String inputID2 = "LAYER2";
private final String outputID = "RESULT";
private List<String> errors = new ArrayList<String>();
public List<String> getErrors() {
return errors;
}
public Class<GTVectorDataBinding> getInputDataType(String id) {
if (id.equalsIgnoreCase(inputID1) || id.equalsIgnoreCase(inputID2)) {
return GTVectorDataBinding.class;
}
return null;
}
public Class<LiteralBooleanBinding> getOutputDataType(String id) {
if(id.equalsIgnoreCase(outputID)){
return LiteralBooleanBinding.class;
}
return null;
}
@Override
public Map<String, IData> run(Map<String, List<IData>> inputData) {
if(inputData==null || !inputData.containsKey(inputID1)){
throw new RuntimeException("Error while allocating input parameters");
}
if(inputData==null || !inputData.containsKey(inputID2)){
throw new RuntimeException("Error while allocating input parameters");
}
List<IData> firstDataList = inputData.get(inputID1);
if(firstDataList == null || firstDataList.size() != 1){
throw new RuntimeException("Error while allocating input parameters");
}
IData firstInputData = firstDataList.get(0);
FeatureCollection<?, ?> firstCollection = ((GTVectorDataBinding) firstInputData).getPayload();
List<IData> secondDataList = inputData.get(inputID2);
if(secondDataList == null || secondDataList.size() != 1){
throw new RuntimeException("Error while allocating input parameters");
}
IData secondInputData = secondDataList.get(0);
FeatureCollection<?, ?> secondCollection = ((GTVectorDataBinding) secondInputData).getPayload();
FeatureIterator<?> firstIterator = firstCollection.features();
FeatureIterator<?> secondIterator = secondCollection.features();
if(!firstIterator.hasNext()){
throw new RuntimeException("Error while iterating over features in layer 1");
}
if(!secondIterator.hasNext()){
throw new RuntimeException("Error while iterating over features in layer 2");
}
SimpleFeature firstFeature = (SimpleFeature) firstIterator.next();
SimpleFeature secondFeature = (SimpleFeature) secondIterator.next();
boolean intersects = ((Geometry)firstFeature.getDefaultGeometry()).intersects((Geometry)secondFeature.getDefaultGeometry());
HashMap<String, IData> result = new HashMap<String, IData>();
result.put(outputID,
new LiteralBooleanBinding(intersects));
return result;
}
@Override
public List<String> getInputIdentifiers() {
List<String> identifiers = new ArrayList<String>(2);
identifiers.add(inputID1);
identifiers.add(inputID2);
return identifiers;
}
@Override
public List<String> getOutputIdentifiers() {
List<String> identifiers = new ArrayList<String>(1);
identifiers.add(outputID);
return identifiers;
}
}