- added downloader option in DictionaryLoader - added generalization (interfaces and overarching localization) - more abstraction using the libraries git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6879 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
orbiter
15 years ago
parent
c9862e0ca9
commit
e43e61e502
@ -0,0 +1,169 @@
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/**
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* GeonamesLocalization.java
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* Copyright 2010 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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* first published 16.05.2010 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 program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 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 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 COPYING.LESSER.
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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.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.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import net.yacy.kelondro.logging.Log;
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public class GeonamesLocalization implements Localization {
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/*
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The main 'geoname' table has the following fields :
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---------------------------------------------------
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geonameid : integer id of record in geonames database
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name : name of geographical point (utf8) varchar(200)
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asciiname : name of geographical point in plain ascii characters, varchar(200)
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alternatenames : alternatenames, comma separated varchar(5000)
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latitude : latitude in decimal degrees (wgs84)
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longitude : longitude in decimal degrees (wgs84)
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feature class : see http://www.geonames.org/export/codes.html, char(1)
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feature code : see http://www.geonames.org/export/codes.html, varchar(10)
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country code : ISO-3166 2-letter country code, 2 characters
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cc2 : alternate country codes, comma separated, ISO-3166 2-letter country code, 60 characters
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admin1 code : fipscode (subject to change to iso code), see exceptions below, see file admin1Codes.txt for display names of this code; varchar(20)
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admin2 code : code for the second administrative division, a county in the US, see file admin2Codes.txt; varchar(80)
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admin3 code : code for third level administrative division, varchar(20)
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admin4 code : code for fourth level administrative division, varchar(20)
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population : bigint (8 byte int)
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elevation : in meters, integer
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gtopo30 : average elevation of 30'x30' (ca 900mx900m) area in meters, integer
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timezone : the timezone id (see file timeZone.txt)
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modification date : date of last modification in yyyy-MM-dd format
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*/
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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 HashMap<Integer, Location> id2loc;
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private final TreeMap<String, List<Integer>> name2ids;
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private final File file;
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public GeonamesLocalization(final File file) {
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// this is a processing of the cities1000.zip file from http://download.geonames.org/export/dump/
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this.file = file;
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this.id2loc = new HashMap<Integer, Location>();
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this.name2ids = new TreeMap<String, List<Integer>>(insensitiveCollator);
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if (file == null || !file.exists()) return;
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BufferedReader reader;
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try {
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ZipFile zf = new ZipFile(file);
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ZipEntry ze = zf.getEntry("cities1000.txt");
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InputStream is = zf.getInputStream(ze);
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reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
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} catch (IOException e) {
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Log.logException(e);
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return;
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}
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// when an error occurs after this line, just accept it and work on
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try {
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String line;
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String[] fields;
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Set<String> locnames;
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while ((line = reader.readLine()) != null) {
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if (line.length() == 0) continue;
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fields = line.split("\t");
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int id = Integer.parseInt(fields[0]);
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locnames = new HashSet<String>();
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locnames.add(fields[1]);
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locnames.add(fields[2]);
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for (String s: fields[3].split(",")) locnames.add(s);
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Location c = new Location(Double.parseDouble(fields[5]), Double.parseDouble(fields[4]), fields[1]);
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this.id2loc.put(id, c);
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for (String name: locnames) {
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List<Integer> locs = this.name2ids.get(name);
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if (locs == null) locs = new ArrayList<Integer>(1);
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locs.add(id);
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this.name2ids.put(name, locs);
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}
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}
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} catch (IOException e) {
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Log.logException(e);
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}
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}
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public Set<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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}
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HashSet<Location> a = new HashSet<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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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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SortedMap<String, List<Integer>> t = this.name2ids.tailMap(s);
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for (String r: t.keySet()) {
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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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@ -0,0 +1,68 @@
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/**
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* Localization.java
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* Copyright 2010 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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* first published 16.05.2010 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 program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 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 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 COPYING.LESSER.
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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.util.Set;
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/**
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* localization interface
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* @author Michael Peter Christen
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*
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*/
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public interface Localization {
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/**
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* find a location by name
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* @param anyname - a name of a location
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* @param locationexact - if true, then only exact matched with the location are returned. if false also partially matching names
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* @return a set of locations
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*/
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public Set<Location> find(String anyname, boolean locationexact);
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/**
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* recommend a set of names according to a given name
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* @param s a possibly partially matching name
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* @return a set of names that match with the given name using the local dictionary of names
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*/
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public Set<String> recommend(String s);
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/**
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* return an nickname of the localization service
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* @return the nickname
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*/
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public String nickname();
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/**
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* hashCode that must be used to distinuguish localization services in hash sets
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* @return the hash code, may be derived from the nickname
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*/
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public int hashCode();
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/**
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* compare localization services; to be used for hash sets with localization services
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* @param other
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* @return true if both objects are localization services and have the same nickname
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*/
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public boolean equals(Object other);
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}
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@ -0,0 +1,93 @@
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/**
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* OverarchingLocalization.java
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* Copyright 2010 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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* first published 16.05.2010 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 program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 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 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 COPYING.LESSER.
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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.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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public class OverarchingLocalization implements Localization {
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private Map<String, Localization> services;
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/**
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* create a new overarching localization object
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*/
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public OverarchingLocalization() {
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this.services = new HashMap<String, Localization>();
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}
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/**
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* add a localization service
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* @param nickname the nickname of the service
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* @param service the service
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*/
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public void addLocalization(String nickname, Localization service) {
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this.services.put(nickname, service);
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}
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/**
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* remove a localization service
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* @param nickname
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*/
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public void removeLocalization(String nickname) {
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this.services.remove(nickname);
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}
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/**
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* find (a set of) locations
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*/
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public Set<Location> find(String anyname, boolean locationexact) {
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Set<Location> locations = new HashSet<Location>();
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for (Localization service: this.services.values()) {
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locations.addAll(service.find(anyname, locationexact));
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}
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return locations;
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}
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/**
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* recommend location names
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*/
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public Set<String> recommend(String s) {
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Set<String> recommendations = new HashSet<String>();
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for (Localization service: this.services.values()) {
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recommendations.addAll(service.recommend(s));
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}
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return recommendations;
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}
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public String nickname() {
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return "oa";
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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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