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/**
* OpenGeoDBLocalization
* Copyright 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
* first published 04.10.2009 on http://yacy.net
*
* This file is part of YaCy Content Integration
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.cora.geo;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.zip.GZIPInputStream;
import net.yacy.cora.document.WordCache;
import net.yacy.cora.util.CommonPattern;
import net.yacy.cora.util.ConcurrentLog;
import net.yacy.cora.util.StringBuilderComparator;
/**
* this class loads and parses database dumps from the OpenGeoDB project files can be loaded from
* http://sourceforge.net/projects/opengeodb/files/ this class is used by the LibraryProvider, which expects
* input files inside DATA\DICTIONARIES\source ATTENTION: if this class is used, expect an extra memory usage
* of more than 100MB! This class will provide a super-fast access to the OpenGeoDB, since all request are
* evaluated using data in the RAM.
*/
public class OpenGeoDBLocation implements Locations
{
private final Map<Integer, GeoLocation> id2loc;
private final TreeMap<StringBuilder, List<Integer>> name2ids;
private final TreeMap<StringBuilder, List<Integer>> kfz2ids;
private final Map<String, List<Integer>> predial2ids;
private final Map<String, Integer> zip2id;
private final File file;
public OpenGeoDBLocation(final File file, WordCache dymLib) {
this.file = file;
this.id2loc = new HashMap<Integer, GeoLocation>();
this.name2ids = new TreeMap<StringBuilder, List<Integer>>(StringBuilderComparator.CASE_INSENSITIVE_ORDER);
this.kfz2ids = new TreeMap<StringBuilder, List<Integer>>(StringBuilderComparator.CASE_INSENSITIVE_ORDER);
this.predial2ids = new HashMap<String, List<Integer>>();
this.zip2id = new HashMap<String, Integer>();
if ( file == null || !file.exists() ) {
return;
}
InputStream is = null;
BufferedReader reader = null;
try {
is = new FileInputStream(file);
if ( file.getName().endsWith(".gz") ) {
is = new GZIPInputStream(is);
}
reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
String line;
// read lines
String[] v;
Integer id;
String h;
float lon, lat;
while ( (line = reader.readLine()) != null ) {
line = line.trim();
if ( !line.startsWith("INSERT INTO ") ) {
continue;
}
if ( !line.endsWith(");") ) {
continue;
}
line = line.substring(12);
//p = line.indexOf(' '); if (p < 0) continue;
if ( line.startsWith("geodb_coordinates ") ) {
line = line.substring(18 + 7);
v = CommonPattern.COMMA.split(line);
lat = Float.parseFloat(v[2]);
lon = Float.parseFloat(v[3]);
this.id2loc.put(Integer.parseInt(v[0]), new GeoLocation(lat, lon));
}
if ( line.startsWith("geodb_textdata ") ) {
line = line.substring(15 + 7);
v = CommonPattern.COMMA.split(line);
if ( v[1].equals("500100000") ) { // Ortsname
if (v.length > 10) {
// a ',' is probably inside the location name
v[2] = v[2] + "," + v[3];
}
id = Integer.parseInt(v[0]);
h = removeQuotes(v[2]);
if (h.length() < OverarchingLocation.MINIMUM_NAME_LENGTH) continue;
if (dymLib != null && dymLib.contains(new StringBuilder(h))) continue;
List<Integer> l = this.name2ids.get(new StringBuilder(h));
if ( l == null ) {
l = new ArrayList<Integer>(1);
}
l.add(id);
this.name2ids.put(new StringBuilder(h), l);
final GeoLocation loc = this.id2loc.get(id);
if ( loc != null ) {
loc.setName(h);
}
} else if ( v[1].equals("500400000") ) { // Vorwahl
id = Integer.parseInt(v[0]);
h = removeQuotes(v[2]);
List<Integer> l = this.predial2ids.get(h);
if ( l == null ) {
l = new ArrayList<Integer>(1);
}
l.add(id);
this.predial2ids.put(h, l);
} else if ( v[1].equals("400300000") ) { // Ortstyp
id = Integer.parseInt(v[0]);
h = removeQuotes(v[2]);
/*
final Integer hc = h.hashCode();
final byte[] tb = this.locTypeHash2locType.get(hc);
if ( tb == null ) {
this.locTypeHash2locType.put(hc, UTF8.getBytes(h));
}
this.id2locTypeHash.put(id, hc);
*/
} else if ( v[1].equals("500300000") ) { // PLZ
this.zip2id.put(removeQuotes(v[2]), Integer.parseInt(v[0]));
} else if ( v[1].equals("500500000") ) { // KFZ-Kennzeichen
id = Integer.parseInt(v[0]);
h = removeQuotes(v[2]);
List<Integer> l = this.kfz2ids.get(new StringBuilder(h));
if ( l == null ) {
l = new ArrayList<Integer>(1);
}
l.add(id);
this.kfz2ids.put(new StringBuilder(h), l);
}
}
continue;
}
} catch (final IOException e ) {
ConcurrentLog.logException(e);
} finally {
if ( reader != null ) {
try {
reader.close();
} catch (final Exception ignored ) {
}
} else if(is != null) {
try {
is.close();
} catch (final IOException ignored ) {
}
}
}
}
private static final String removeQuotes(String s) {
if ( s.length() > 0 && s.charAt(0) == '\'' ) {
s = s.substring(1);
}
if ( s.charAt(s.length() - 1) == '\'' ) {
s = s.substring(0, s.length() - 1);
}
return s;
}
@Override
public int size() {
return this.id2loc.size();
}
@Override
public boolean isEmpty() {
return this.id2loc.isEmpty();
}
/**
* check database tables against occurrences of this entity the anyname - String may be one of: - name of
* a town, villa, region etc - zip code - telephone prefix - kfz sign
*
* @param anyname
* @return
*/
@Override
public TreeSet<GeoLocation> find(final String anyname, final boolean locationexact) {
final HashSet<Integer> r = new HashSet<Integer>();
List<Integer> c;
final StringBuilder an = new StringBuilder(anyname);
if ( locationexact ) {
c = this.name2ids.get(an);
if ( c != null ) {
r.addAll(c);
}
} else {
final SortedMap<StringBuilder, List<Integer>> cities = this.name2ids.tailMap(an);
for ( final Map.Entry<StringBuilder, List<Integer>> e : cities.entrySet() ) {
if ( StringBuilderComparator.CASE_INSENSITIVE_ORDER.startsWith(e.getKey(), an) ) {
r.addAll(e.getValue());
} else {
break;
}
}
c = this.kfz2ids.get(an);
if ( c != null ) {
r.addAll(c);
}
c = this.predial2ids.get(anyname);
if ( c != null ) {
r.addAll(c);
}
final Integer i = this.zip2id.get(anyname);
if ( i != null ) {
r.add(i);
}
}
final TreeSet<GeoLocation> a = new TreeSet<GeoLocation>();
for ( final Integer e : r ) {
final GeoLocation w = this.id2loc.get(e);
if ( w != null ) {
a.add(w);
}
}
return a;
}
/**
* produce a set of location names
* @return a set of names
*/
@Override
public Set<String> locationNames() {
Set<String> locations = new HashSet<String>();
Set<StringBuilder> l = this.name2ids.keySet();
for (StringBuilder s: l) {
locations.add(s.toString());
}
return locations;
}
/**
* read the dictionary and construct a set of recommendations to a given string
*
* @param s input value that is used to match recommendations
* @return a set that contains all words that start with the input value
*/
@Override
public Set<String> recommend(final String s) {
final Set<String> a = new HashSet<String>();
final StringBuilder an = new StringBuilder(s);
if ( s.isEmpty() ) {
return a;
}
final SortedMap<StringBuilder, List<Integer>> t = this.name2ids.tailMap(an);
for ( final StringBuilder r : t.keySet() ) {
if ( StringBuilderComparator.CASE_INSENSITIVE_ORDER.startsWith(r, an) ) {
a.add(r.toString());
} else {
break;
}
}
return a;
}
@Override
public Set<StringBuilder> recommend(final StringBuilder s) {
final Set<StringBuilder> a = new HashSet<StringBuilder>();
if ( s.length() == 0 ) {
return a;
}
final SortedMap<StringBuilder, List<Integer>> t = this.name2ids.tailMap(s);
for ( final StringBuilder r : t.keySet() ) {
if ( StringBuilderComparator.CASE_INSENSITIVE_ORDER.startsWith(r, s) ) {
a.add(r);
} else {
break;
}
}
return a;
}
@Override
public String nickname() {
return this.file.getName();
}
@Override
public int hashCode() {
return nickname().hashCode();
}
@Override
public boolean equals(final Object other) {
if ( !(other instanceof Locations) ) {
return false;
}
return nickname().equals(((Locations) other).nickname());
}
}
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