git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6291 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
orbiter
16 years ago
parent
af3a696fc4
commit
2740d9dd79
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// Coordinates.java
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// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 04.10.2009 on http://yacy.net
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//
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// This is a part of YaCy
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package de.anomic.data;
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public class Coordinates {
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private double lon, lat;
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public Coordinates(double lon, double lat) {
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this.lon = lon;
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this.lat = lat;
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}
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public double lon() {
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return this.lon;
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}
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public double lat() {
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return this.lat;
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}
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private static final double bits30 = new Double(1L << 30).doubleValue(); // this is about one billion (US)
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private static final double upscale = bits30 / 360.0;
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private static final int coord2int(double coord) {
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return (int) ((coord + 180.0) * upscale);
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}
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/**
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* compute the hash code of a coordinate
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* this produces identical hash codes for locations that are close to each other on longitude
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*/
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public int hashCode() {
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int lon1 = coord2int(this.lon) >> 15;
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int lat1 = coord2int(this.lat) >> 15;
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return (lon1 << 15) | lat1;
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}
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public String toString() {
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return "[" + this.lon + "," + this.lat + "]";
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}
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}
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@ -0,0 +1,183 @@
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// OpenGeoDB.java
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// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 04.10.2009 on http://yacy.net
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//
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// This is a part of YaCy
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package de.anomic.data;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.text.Collator;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Locale;
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import java.util.TreeMap;
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import java.util.zip.GZIPInputStream;
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/**
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* this class loads and parses database dumps from the OpenGeoDB project
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* files can be loaded from http://sourceforge.net/projects/opengeodb/files/
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* this class is used by the LibraryProvider, which expects input files inside
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* DATA\DICTIONARIES\source
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*
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* ATTENTION:
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* if this class is used, expect an extra memory usage of more than 100MB!
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*
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* This class will provide a super-fast access to the OpenGeoDB,
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* since all request are evaluated using data in the RAM.
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*/
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public class OpenGeoDB {
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// use a collator to relax when distinguishing between lowercase und uppercase letters
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private static final Collator insensitiveCollator = Collator.getInstance(Locale.US);
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static {
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insensitiveCollator.setStrength(Collator.SECONDARY);
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insensitiveCollator.setDecomposition(Collator.NO_DECOMPOSITION);
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}
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private HashMap<Integer, String> locTypeHash2locType;
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private HashMap<Integer, Coordinates> id2coord;
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private HashMap<Integer, Integer> id2locTypeHash;
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private TreeMap<String, List<Integer>> locationName2ids;
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private TreeMap<String, List<Integer>> kfz2ids;
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private HashMap<String, List<Integer>> predial2ids;
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private HashMap<String, Integer> zip2id;
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public OpenGeoDB(final File file) {
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this.locTypeHash2locType = new HashMap<Integer, String>();
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this.id2coord = new HashMap<Integer, Coordinates>();
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this.id2locTypeHash = new HashMap<Integer, Integer>();
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this.locationName2ids = new TreeMap<String, List<Integer>>(insensitiveCollator);
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this.kfz2ids = new TreeMap<String, List<Integer>>(insensitiveCollator);
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this.predial2ids = new HashMap<String, List<Integer>>();
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this.zip2id = new HashMap<String, Integer>();
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if (file == null || !file.exists()) return;
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BufferedReader reader = null;
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try {
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InputStream is = new FileInputStream(file);
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if (file.getName().endsWith(".gz")) is = new GZIPInputStream(is);
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reader = new BufferedReader(new InputStreamReader(is));
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String line;
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// read lines
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String[] v;
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Integer id;
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String h;
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while ((line = reader.readLine()) != null) {
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line = line.trim();
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if (!line.startsWith("INSERT INTO ")) continue;
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if (!line.endsWith(");")) continue;
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line = line.substring(12);
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//p = line.indexOf(' '); if (p < 0) continue;
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if (line.startsWith("geodb_coordinates ")) {
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line = line.substring(18 + 7);v = line.split(",");
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v = line.split(",");
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id2coord.put(Integer.parseInt(v[0]), new Coordinates(Double.parseDouble(v[2]), Double.parseDouble(v[3])));
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}
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if (line.startsWith("geodb_textdata ")) {
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line = line.substring(15 + 7);
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v = line.split(",");
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if (v[1].equals("500100000")) { // Ortsname
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id = Integer.parseInt(v[0]);
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h = removeQuotes(v[2]);
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List<Integer> l = this.locationName2ids.get(h);
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if (l == null) l = new ArrayList<Integer>(1);
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l.add(id);
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this.locationName2ids.put(h, l);
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} else if (v[1].equals("500400000")) { // Vorwahl
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id = Integer.parseInt(v[0]);
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h = removeQuotes(v[2]);
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List<Integer> l = this.predial2ids.get(h);
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if (l == null) l = new ArrayList<Integer>(1);
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l.add(id);
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this.predial2ids.put(h, l);
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} else if (v[1].equals("400300000")) { // Ortstyp
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id = Integer.parseInt(v[0]);
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h = removeQuotes(v[2]);
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Integer hc = h.hashCode();
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String t = this.locTypeHash2locType.get(hc);
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if (t == null) this.locTypeHash2locType.put(hc, h);
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this.id2locTypeHash.put(id, hc);
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} else if (v[1].equals("500300000")) { // PLZ
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this.zip2id.put(removeQuotes(v[2]), Integer.parseInt(v[0]));
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} else if (v[1].equals("500500000")) { // KFZ-Kennzeichen
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id = Integer.parseInt(v[0]);
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h = removeQuotes(v[2]);
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List<Integer> l = this.kfz2ids.get(h);
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if (l == null) l = new ArrayList<Integer>(1);
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l.add(id);
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this.kfz2ids.put(h, l);
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}
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}
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continue;
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}
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reader.close();
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} catch (final IOException e) {
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e.printStackTrace();
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} finally {
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if (reader != null) try { reader.close(); } catch (final Exception e) {}
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}
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}
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private static final String removeQuotes(String s) {
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if (s.charAt(0) != '\'') return s;
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if (s.charAt(s.length() - 1) != '\'') return s;
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s = s.substring(1, s.length() - 1);
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return s;
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}
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/**
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* check database tables against occurrences of this entity
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* the anyname - String may be one of:
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* - name of a town, villa, region etc
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* - zip code
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* - telephone prefix
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* - kfz sign
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* @param anyname
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* @return
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*/
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public HashSet<Coordinates> find(String anyname) {
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HashSet<Integer> r = new HashSet<Integer>();
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List<Integer> c;
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c = this.locationName2ids.get(anyname); if (c != null) r.addAll(c);
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c = this.kfz2ids.get(anyname); if (c != null) r.addAll(c);
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c = this.predial2ids.get(anyname); if (c != null) r.addAll(c);
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Integer i = this.zip2id.get(anyname); if (i != null) r.add(i);
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HashSet<Coordinates> a = new HashSet<Coordinates>();
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for (Integer e: r) {
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Coordinates w = this.id2coord.get(e);
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if (w != null) a.add(w);
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}
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return a;
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}
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}
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