/* 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.parser;
import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.Map;
import io.jeo.json.parser.ParseException;
import io.jeo.proj.Proj;
import io.jeo.util.Consumer;
import io.jeo.vector.Feature;
import io.jeo.vector.MapFeature;
import org.osgeo.proj4j.CoordinateReferenceSystem;
import com.vividsolutions.jts.geom.Geometry;
public class FeatureHandler extends BaseHandler {
Integer id;
public FeatureHandler() {
this(null);
}
public FeatureHandler(Integer id) {
this.id = id;
}
@Override
public boolean startObject() throws ParseException, IOException {
return true;
}
@Override
public boolean startObjectEntry(String key) throws ParseException,
IOException {
if ("type".equals(key)) {
push(key, new TypeHandler());
}
if ("crs".equals(key)) {
push(key, new CRSHandler());
}
if ("geometry".equals(key)) {
push(key, new GeometryHandler());
}
else if ("properties".equals(key)) {
push(key, new PropertiesHandler());
}
else if ("id".equals(key)) {
push(key, new IdHandler());
}
return true;
}
@Override
public boolean endObjectEntry() throws ParseException, IOException {
return true;
}
@Override
public boolean endObject() throws ParseException, IOException {
final Geometry geom = node.consume("geometry", Geometry.class).orElse(null);
if (geom != null && Proj.crs(geom) == null) {
node.consume("crs", CoordinateReferenceSystem.class).ifPresent(new Consumer<CoordinateReferenceSystem>() {
@Override
public void accept(CoordinateReferenceSystem val) {
Proj.crs(geom, val);
}
});
}
Map<String,Object> props = node.consume("properties", Map.class)
.orElse(new LinkedHashMap<String, Object>());
props.put("geometry", geom);
String fid = node.consume("id", String.class).orElse(id != null ? String.valueOf(id) : null);
node.setValue(new MapFeature(fid, props));
pop();
return true;
}
static class IdHandler extends BaseHandler {
@Override
public boolean primitive(Object value) throws ParseException, IOException {
node.setValue(value);
pop();
return true;
}
}
}