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96 lines
2.9 KiB
96 lines
2.9 KiB
/**
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* GeoLocation
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* Copyright 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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* first published 08.10.2009 on http://yacy.net
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*
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* This file is part of YaCy Content Integration
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.document.geolocation;
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import java.util.Comparator;
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import net.yacy.cora.document.UTF8;
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public class GeoLocation extends IntegerGeoPoint implements Comparable<GeoLocation>, Comparator<GeoLocation> {
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private byte[] name;
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private int population;
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public GeoLocation(double lat, double lon) {
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super(lat, lon);
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this.name = null;
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this.population = 0;
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}
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public GeoLocation(double lat, double lon, String name) {
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super(lat, lon);
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this.name = UTF8.getBytes(name);
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}
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public void setName(String name) {
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this.name = UTF8.getBytes(name);
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}
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public String getName() {
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return UTF8.String(this.name);
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}
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public void setPopulation(int population) {
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this.population = population;
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}
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public int getPopulation() {
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return this.population;
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}
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@Override
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public boolean equals(Object loc) {
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if (!(loc instanceof GeoLocation)) return false;
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if (this.name == null || ((GeoLocation) loc).name == null) return super.equals(loc);
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return super.equals(loc) && this.getName().toLowerCase().equals(((GeoLocation) loc).getName().toLowerCase());
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}
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/**
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* comparator that is needed to use the object inside TreeMap/TreeSet
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* a Location is smaller than another if it has a _greater_ population
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* this order is used to get sorted lists of locations where the first elements
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* have the greatest population
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*/
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@Override
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public int compareTo(GeoLocation o) {
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if (this.equals(o)) return 0;
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long s = (ph(this.getPopulation()) << 30) + this.hashCode();
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long t = (ph(o.getPopulation()) << 30) + o.hashCode();
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if (s > t) return -1;
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if (s < t) return 1;
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return 0;
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}
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private static long ph(int population) {
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if (population > 10000) population -= 10000;
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return population;
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}
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@Override
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public int compare(GeoLocation o1, GeoLocation o2) {
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return o1.compareTo(o2);
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}
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}
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