OsmElement.java

/*
 * Copyright 2013 Tobias Knerr
 *
 * 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.core.osm;

import org.oscim.core.TagSet;

import com.vividsolutions.jts.geom.Geometry;

public abstract class OsmElement {

	public final TagSet tags;
	public final long id;

	public OsmElement(TagSet tags, long id) {
		assert tags != null;
		this.tags = tags;
		this.id = id;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + (int) (id ^ (id >>> 32));
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		OsmElement other = (OsmElement) obj;
		if (id != other.id)
			return false;
		return true;
	}

	/**
	 * returns the id, plus an one-letter prefix for the element type
	 */
	@Override
	public String toString() {
		return "?" + id;
	}

	public abstract Geometry toJts();
}