/* Copyright 2013 The jeo project. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.jeo.geojson;
import java.io.IOException;
import java.io.Writer;
import java.util.HashMap;
import io.jeo.vector.Feature;
import io.jeo.vector.FeatureAppendCursor;
import com.vividsolutions.jts.geom.Geometry;
import io.jeo.vector.MapFeature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GeoJSONAppendCursor extends FeatureAppendCursor {
static Logger LOG = LoggerFactory.getLogger(GeoJSONAppendCursor.class);
GeoJSONWriter writer;
Feature next;
public GeoJSONAppendCursor(Writer out) throws IOException {
writer = new GeoJSONWriter(out);
writer.featureCollection();
}
@Override
public Feature next() throws IOException {
return next = new MapFeature(null, new HashMap<String, Object>()) {
@Override
public Feature put(Geometry g) {
//hack
return put("geometry", g);
}
};
}
@Override
public GeoJSONAppendCursor write() throws IOException {
writer.feature(next);
return this;
}
@Override
public void close() {
if (writer != null) {
try {
writer.endFeatureCollection();
} catch (IOException e) {
throw new RuntimeException("Error closing feature collection object", e);
}
try {
writer.flush();
}
catch(IOException e) {
LOG.debug("Error flushing writer");
}
}
writer = null;
}
}