/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2014, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*/
package org.geotools.process.spatialstatistics;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.process.Process;
import org.geotools.process.ProcessException;
import org.geotools.process.ProcessFactory;
import org.geotools.process.spatialstatistics.core.Params;
import org.geotools.process.spatialstatistics.operations.HubLinesByIDOperation;
import org.geotools.util.logging.Logging;
import org.opengis.util.ProgressListener;
/**
* Creates a line features representing the shortest distance between hub and spoke features by id.
*
* @author Minpa Lee, MangoSystem
*
* @source $URL$
*/
public class HubLinesByIDProcess extends AbstractStatisticsProcess {
protected static final Logger LOGGER = Logging.getLogger(HubLinesByIDProcess.class);
public HubLinesByIDProcess(ProcessFactory factory) {
super(factory);
}
public ProcessFactory getFactory() {
return factory;
}
public static SimpleFeatureCollection process(SimpleFeatureCollection hubFeatures,
String hubIdField, SimpleFeatureCollection spokeFeatures, String spokeIdField,
boolean preserveAttributes, boolean useCentroid, double maximumDistance,
ProgressListener monitor) {
Map<String, Object> map = new HashMap<String, Object>();
map.put(HubLinesByIDProcessFactory.hubFeatures.key, hubFeatures);
map.put(HubLinesByIDProcessFactory.hubIdField.key, hubIdField);
map.put(HubLinesByIDProcessFactory.spokeFeatures.key, spokeFeatures);
map.put(HubLinesByIDProcessFactory.spokeIdField.key, spokeIdField);
map.put(HubLinesByIDProcessFactory.preserveAttributes.key, preserveAttributes);
map.put(HubLinesByIDProcessFactory.useCentroid.key, useCentroid);
map.put(HubLinesByIDProcessFactory.maximumDistance.key, maximumDistance);
Process process = new HubLinesByIDProcess(null);
Map<String, Object> resultMap;
try {
resultMap = process.execute(map, monitor);
return (SimpleFeatureCollection) resultMap.get(HubLinesByIDProcessFactory.RESULT.key);
} catch (ProcessException e) {
LOGGER.log(Level.FINER, e.getMessage(), e);
}
return null;
}
@Override
public Map<String, Object> execute(Map<String, Object> input, ProgressListener monitor)
throws ProcessException {
SimpleFeatureCollection hubFeatures = (SimpleFeatureCollection) Params.getValue(input,
HubLinesByIDProcessFactory.hubFeatures, null);
String hubIdField = (String) Params.getValue(input, HubLinesByIDProcessFactory.hubIdField,
null);
SimpleFeatureCollection spokeFeatures = (SimpleFeatureCollection) Params.getValue(input,
HubLinesByIDProcessFactory.spokeFeatures, null);
String spokeIdField = (String) Params.getValue(input,
HubLinesByIDProcessFactory.spokeIdField, null);
if (hubFeatures == null || hubIdField == null || spokeFeatures == null
|| spokeIdField == null) {
throw new NullPointerException(
"hubFeatures, hubIdField, spokeFeatures, spokeIdField parameters required");
}
Boolean preserveAttributes = (Boolean) Params.getValue(input,
HubLinesByIDProcessFactory.preserveAttributes,
HubLinesByIDProcessFactory.preserveAttributes.sample);
Boolean useCentroid = (Boolean) Params.getValue(input,
HubLinesByIDProcessFactory.useCentroid,
HubLinesByIDProcessFactory.useCentroid.sample);
Double maximumDistance = (Double) Params.getValue(input,
HubLinesByIDProcessFactory.maximumDistance,
HubLinesByIDProcessFactory.maximumDistance.sample);
// start process
SimpleFeatureCollection resultFc = null;
try {
HubLinesByIDOperation operation = new HubLinesByIDOperation();
resultFc = operation.execute(hubFeatures, hubIdField, spokeFeatures, spokeIdField,
useCentroid, preserveAttributes, maximumDistance);
} catch (IOException e) {
throw new ProcessException(e);
}
// end process
Map<String, Object> resultMap = new HashMap<String, Object>();
resultMap.put(HubLinesByIDProcessFactory.RESULT.key, resultFc);
return resultMap;
}
}