HighroadJsonTileSource.java

/*
 * Copyright 2014 Hannes Janetzek
 *
 * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
 *
 * This program 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, either version 3 of the License, or (at your option) any later version.
 *
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.oscim.tiling.source.geojson;

import java.util.Map;

import org.oscim.core.MapElement;
import org.oscim.core.Tag;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HighroadJsonTileSource extends GeoJsonTileSource {

	static final Logger log = LoggerFactory.getLogger(HighroadJsonTileSource.class);

	Tag mTagTunnel = new Tag("tunnel", "yes");
	Tag mTagBridge = new Tag("bridge", "yes");

	public HighroadJsonTileSource() {
		super("http://tile.openstreetmap.us/vectiles-highroad");
	}

	@Override
	public void decodeTags(MapElement mapElement, Map<String, Object> properties) {
		String highway = null;
		boolean isLink = false;

		mapElement.layer = 5;

		for (Map.Entry<String, Object> entry : properties.entrySet()) {
			String key = entry.getKey();
			Object value = entry.getValue();
			//log.debug(key + " : " + String.valueOf(value));

			if (value == null)
				continue;

			if ("no".equals(value))
				continue;

			if ("highway".equals(key) && value instanceof String) {
				highway = (String) entry.getValue();
			}
			else if ("is_link".equals(key)) {
				isLink = "yes".equals(value);
			}
			else if ("is_tunnel".equals(key)) {
				mapElement.tags.add(mTagTunnel);
			}
			else if ("is_bridge".equals(key)) {
				mapElement.tags.add(mTagBridge);
			}
			else if ("sort_key".equals(key)) {
				if (value instanceof Integer)
					mapElement.layer = 5 + (Integer) value;
			}
			else if ("railway".equals(key) && value instanceof String) {
				mapElement.tags.add(new Tag("railway", (String) value));
			}
		}

		if (highway == null)
			return;

		if (isLink)
			highway += "_link";

		mapElement.tags.add(new Tag("highway", highway));

	}

	@Override
	public Tag rewriteTag(String key, Object value) {
		if ("kind".equals(key))
			return null;

		if (value == null)
			return null;

		String val = (value instanceof String) ? (String) value : String.valueOf(value);

		return new Tag(key, val);
	}
}