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239 lines
9.7 KiB
239 lines
9.7 KiB
/**
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* OpenGeoDBLocalization
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* Copyright 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 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.geolocalization;
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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.Map;
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import java.util.Set;
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import java.util.SortedMap;
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import java.util.TreeMap;
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import java.util.TreeSet;
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import java.util.zip.GZIPInputStream;
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import net.yacy.kelondro.logging.Log;
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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 OpenGeoDBLocalization implements Localization {
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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 final Map<Integer, String> locTypeHash2locType;
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private final Map<Integer, Location> id2loc;
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private final Map<Integer, Integer> id2locTypeHash;
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private final TreeMap<String, List<Integer>> name2ids;
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private final Map<String, List<Integer>> kfz2ids;
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private final Map<String, List<Integer>> predial2ids;
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private final Map<String, Integer> zip2id;
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private final File file;
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public OpenGeoDBLocalization(final File file, boolean lonlat) {
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this.file = file;
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this.locTypeHash2locType = new HashMap<Integer, String>();
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this.id2loc = new HashMap<Integer, Location>();
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this.id2locTypeHash = new HashMap<Integer, Integer>();
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this.name2ids = 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, "UTF-8"));
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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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float lon, lat;
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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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if (lonlat) {
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lon = Float.parseFloat(v[2]);
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lat = Float.parseFloat(v[3]);
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} else {
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lat = Float.parseFloat(v[2]);
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lon = Float.parseFloat(v[3]);
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}
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id2loc.put(Integer.parseInt(v[0]), new Location(lon, lat));
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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.name2ids.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.name2ids.put(h, l);
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Location loc = this.id2loc.get(id);
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if (loc != null) loc.setName(h);
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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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Log.logException(e);
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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.length() > 0 && 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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public int locations() {
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return id2loc.size();
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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 TreeSet<Location> find(String anyname, boolean locationexact) {
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HashSet<Integer> r = new HashSet<Integer>();
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List<Integer> c;
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if (locationexact) {
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c = this.name2ids.get(anyname); if (c != null) r.addAll(c);
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} else {
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SortedMap<String, List<Integer>> cities = this.name2ids.tailMap(anyname);
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for (Map.Entry<String, List<Integer>> e: cities.entrySet()) {
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if (e.getKey().toLowerCase().startsWith(anyname.toLowerCase())) r.addAll(e.getValue()); else break;
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}
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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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}
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TreeSet<Location> a = new TreeSet<Location>();
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for (Integer e: r) {
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Location w = this.id2loc.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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* read the dictionary and construct a set of recommendations to a given string
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* @param s input value that is used to match recommendations
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* @return a set that contains all words that start with the input value
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*/
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public Set<String> recommend(String s) {
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Set<String> a = new HashSet<String>();
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s = s.trim().toLowerCase();
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if (s.length() == 0) return a;
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SortedMap<String, List<Integer>> t = this.name2ids.tailMap(s);
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for (String r: t.keySet()) {
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r = r.toLowerCase();
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if (r.startsWith(s)) a.add(r); else break;
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}
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return a;
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}
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public String nickname() {
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return this.file.getName();
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}
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public int hashCode() {
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return this.nickname().hashCode();
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}
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public boolean equals(Object other) {
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if (!(other instanceof Localization)) return false;
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return this.nickname().equals(((Localization) other).nickname());
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}
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}
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