You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
452 lines
18 KiB
452 lines
18 KiB
// indexURLEntry.java
|
|
// (C) 2006 by Michael Peter Christen; mc@anomic.de, Frankfurt a. M., Germany
|
|
// first published 2006 on http://www.anomic.de
|
|
//
|
|
// This is a part of YaCy, a peer-to-peer based web search engine
|
|
//
|
|
// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
|
|
// $LastChangedRevision: 1986 $
|
|
// $LastChangedBy: orbiter $
|
|
//
|
|
// LICENSE
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 2 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program 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 General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
|
|
package de.anomic.index;
|
|
|
|
import java.io.IOException;
|
|
import java.net.MalformedURLException;
|
|
import java.text.ParseException;
|
|
import java.util.ArrayList;
|
|
import java.util.Date;
|
|
import java.util.Properties;
|
|
|
|
import de.anomic.kelondro.kelondroBase64Order;
|
|
import de.anomic.kelondro.kelondroBitfield;
|
|
import de.anomic.kelondro.kelondroException;
|
|
import de.anomic.kelondro.kelondroNaturalOrder;
|
|
import de.anomic.kelondro.kelondroRow;
|
|
import de.anomic.net.URL;
|
|
import de.anomic.plasma.plasmaCrawlEntry;
|
|
import de.anomic.plasma.plasmaSearchQuery;
|
|
import de.anomic.plasma.plasmaURL;
|
|
import de.anomic.server.serverCharBuffer;
|
|
import de.anomic.server.serverCodings;
|
|
import de.anomic.tools.crypt;
|
|
import de.anomic.tools.nxTools;
|
|
import de.anomic.index.indexRWIEntry;
|
|
|
|
public class indexURLEntry {
|
|
|
|
// this object stores attributes for URL entries
|
|
|
|
public static final kelondroRow rowdef = new kelondroRow(
|
|
"String hash-12, " + // the url's hash
|
|
"String comp-360, " + // components: the url, description, author and tags. As 5th element, an ETag is possible
|
|
"Cardinal mod-4 {b256}, " + // last-modified from the httpd
|
|
"Cardinal load-4 {b256}, " + // time when the url was loaded
|
|
"Cardinal fresh-4 {b256}, " + // time until this url is fresh
|
|
"String referrer-12, " + // (one of) the url's referrer hash(es)
|
|
"byte[] md5-8, " + // the md5 of the url content (to identify changes)
|
|
"Cardinal size-6 {b256}, " + // size of file in bytes
|
|
"Cardinal wc-3 {b256}, " + // size of file by number of words; for video and audio: seconds
|
|
"byte[] dt-1, " + // doctype, taken from extension or any other heuristic
|
|
"Bitfield flags-4, " + // flags; any stuff (see Word-Entity definition)
|
|
"String lang-2, " + // language
|
|
"Cardinal llocal-2 {b256}, " + // # of outlinks to same domain; for video and image: width
|
|
"Cardinal lother-2 {b256}, " + // # of outlinks to outside domain; for video and image: height
|
|
"Cardinal limage-2 {b256}, " + // # of embedded image links
|
|
"Cardinal laudio-2 {b256}, " + // # of embedded audio links; for audio: track number; for video: number of audio tracks
|
|
"Cardinal lvideo-2 {b256}, " + // # of embedded video links
|
|
"Cardinal lapp-2 {b256}", // # of embedded links to applications
|
|
kelondroBase64Order.enhancedCoder,
|
|
0);
|
|
|
|
private static final int col_hash = 0;
|
|
private static final int col_comp = 1;
|
|
private static final int col_mod = 2;
|
|
private static final int col_load = 3;
|
|
private static final int col_fresh = 4;
|
|
private static final int col_referrer = 5;
|
|
private static final int col_md5 = 6;
|
|
private static final int col_size = 7;
|
|
private static final int col_wc = 8;
|
|
private static final int col_dt = 9;
|
|
private static final int col_flags = 10;
|
|
private static final int col_lang = 11;
|
|
private static final int col_llocal = 12;
|
|
private static final int col_lother = 13;
|
|
private static final int col_limage = 14;
|
|
private static final int col_laudio = 15;
|
|
private static final int col_lvideo = 16;
|
|
private static final int col_lapp = 17;
|
|
|
|
private kelondroRow.Entry entry;
|
|
private String snippet;
|
|
private indexRWIEntry word; // this is only used if the url is transported via remote search requests
|
|
|
|
public indexURLEntry(
|
|
URL url,
|
|
String descr,
|
|
String author,
|
|
String tags,
|
|
String ETag,
|
|
Date mod,
|
|
Date load,
|
|
Date fresh,
|
|
String referrer,
|
|
byte[] md5,
|
|
long size,
|
|
int wc,
|
|
char dt,
|
|
kelondroBitfield flags,
|
|
String lang,
|
|
int llocal,
|
|
int lother,
|
|
int laudio,
|
|
int limage,
|
|
int lvideo,
|
|
int lapp) {
|
|
// create new entry and store it into database
|
|
this.entry = rowdef.newEntry();
|
|
this.entry.setCol(col_hash, plasmaURL.urlHash(url), null);
|
|
this.entry.setCol(col_comp, encodeComp(url, descr, author, tags, ETag));
|
|
this.entry.setCol(col_mod, encodeDate(mod));
|
|
this.entry.setCol(col_load, encodeDate(load));
|
|
this.entry.setCol(col_fresh, encodeDate(fresh));
|
|
this.entry.setCol(col_referrer, referrer.getBytes());
|
|
this.entry.setCol(col_md5, md5);
|
|
this.entry.setCol(col_size, size);
|
|
this.entry.setCol(col_wc, wc);
|
|
this.entry.setCol(col_dt, new byte[]{(byte) dt});
|
|
this.entry.setCol(col_flags, flags.bytes());
|
|
this.entry.setCol(col_lang, lang.getBytes());
|
|
this.entry.setCol(col_llocal, llocal);
|
|
this.entry.setCol(col_lother, lother);
|
|
this.entry.setCol(col_limage, limage);
|
|
this.entry.setCol(col_laudio, laudio);
|
|
this.entry.setCol(col_lvideo, lvideo);
|
|
this.entry.setCol(col_lapp, lapp);
|
|
this.snippet = null;
|
|
this.word = null;
|
|
}
|
|
|
|
public static byte[] encodeDate(Date d) {
|
|
// calculates the number of days since 1.1.1970 and returns this as 4-byte array
|
|
return kelondroNaturalOrder.encodeLong(d.getTime() / 86400000, 4);
|
|
}
|
|
|
|
public static byte[] encodeComp(URL url, String descr, String author, String tags, String ETag) {
|
|
serverCharBuffer s = new serverCharBuffer(200);
|
|
s.append(url.toNormalform()).append(10);
|
|
s.append(descr).append(10);
|
|
s.append(author).append(10);
|
|
s.append(tags).append(10);
|
|
s.append(ETag).append(10);
|
|
return s.toString().getBytes();
|
|
}
|
|
|
|
public indexURLEntry(kelondroRow.Entry entry, indexRWIEntry searchedWord) {
|
|
this.entry = entry;
|
|
this.snippet = null;
|
|
this.word = searchedWord;
|
|
}
|
|
|
|
public indexURLEntry(Properties prop){
|
|
// generates an plasmaLURLEntry using the properties from the argument
|
|
// the property names must correspond to the one from toString
|
|
//System.out.println("DEBUG-ENTRY: prop=" + prop.toString());
|
|
URL url;
|
|
try {
|
|
url = new URL(crypt.simpleDecode(prop.getProperty("url", ""), null));
|
|
} catch (MalformedURLException e) {
|
|
url = null;
|
|
}
|
|
String descr = crypt.simpleDecode(prop.getProperty("descr", ""), null); if (descr == null) descr = "";
|
|
String author = crypt.simpleDecode(prop.getProperty("author", ""), null); if (author == null) author = "";
|
|
String tags = crypt.simpleDecode(prop.getProperty("tags", ""), null); if (tags == null) tags = "";
|
|
String ETag = crypt.simpleDecode(prop.getProperty("ETag", ""), null); if (ETag == null) ETag = "";
|
|
|
|
this.entry = rowdef.newEntry();
|
|
this.entry.setCol(col_hash, plasmaURL.urlHash(url), null);
|
|
this.entry.setCol(col_comp, encodeComp(url, descr, author, tags, ETag));
|
|
try {
|
|
this.entry.setCol(col_mod, encodeDate(plasmaURL.shortDayFormatter.parse(prop.getProperty("mod", "20000101"))));
|
|
} catch (ParseException e) {
|
|
this.entry.setCol(col_mod, encodeDate(new Date()));
|
|
}
|
|
try {
|
|
this.entry.setCol(col_load, encodeDate(plasmaURL.shortDayFormatter.parse(prop.getProperty("load", "20000101"))));
|
|
} catch (ParseException e) {
|
|
this.entry.setCol(col_load, encodeDate(new Date()));
|
|
}
|
|
try {
|
|
this.entry.setCol(col_fresh, encodeDate(plasmaURL.shortDayFormatter.parse(prop.getProperty("fresh", "20000101"))));
|
|
} catch (ParseException e) {
|
|
this.entry.setCol(col_fresh, encodeDate(new Date()));
|
|
}
|
|
this.entry.setCol(col_referrer, prop.getProperty("referrer", plasmaURL.dummyHash).getBytes());
|
|
this.entry.setCol(col_md5, serverCodings.decodeHex(prop.getProperty("md5", "")));
|
|
this.entry.setCol(col_size, Integer.parseInt(prop.getProperty("size", "0")));
|
|
this.entry.setCol(col_wc, Integer.parseInt(prop.getProperty("wc", "0")));
|
|
this.entry.setCol(col_dt, new byte[]{(byte) prop.getProperty("dt", "t").charAt(0)});
|
|
String flags = prop.getProperty("flags", "AAAAAA");
|
|
this.entry.setCol(col_flags, (flags.length() > 6) ? plasmaSearchQuery.empty_constraint.bytes() : (new kelondroBitfield(4, flags)).bytes());
|
|
this.entry.setCol(col_lang, prop.getProperty("lang", "uk").getBytes());
|
|
this.entry.setCol(col_llocal, Integer.parseInt(prop.getProperty("llocal", "0")));
|
|
this.entry.setCol(col_lother, Integer.parseInt(prop.getProperty("lother", "0")));
|
|
this.entry.setCol(col_limage, Integer.parseInt(prop.getProperty("limage", "0")));
|
|
this.entry.setCol(col_laudio, Integer.parseInt(prop.getProperty("laudio", "0")));
|
|
this.entry.setCol(col_lvideo, Integer.parseInt(prop.getProperty("lvideo", "0")));
|
|
this.entry.setCol(col_lapp, Integer.parseInt(prop.getProperty("lapp", "0")));
|
|
this.snippet = crypt.simpleDecode(prop.getProperty("snippet", ""), null);
|
|
this.word = null;
|
|
if (prop.containsKey("word")) throw new kelondroException("old database structure is not supported");
|
|
if (prop.containsKey("wi")) {
|
|
this.word = new indexRWIEntry(kelondroBase64Order.enhancedCoder.decodeString(prop.getProperty("wi", "")));
|
|
}
|
|
}
|
|
|
|
private StringBuffer corePropList() {
|
|
// generate a parseable string; this is a simple property-list
|
|
indexURLEntry.Components comp = this.comp();
|
|
final StringBuffer s = new StringBuffer(300);
|
|
//System.out.println("author=" + comp.author());
|
|
try {
|
|
s.append("hash=").append(hash());
|
|
s.append(",url=").append(crypt.simpleEncode(comp.url().toNormalform()));
|
|
s.append(",descr=").append(crypt.simpleEncode(comp.title()));
|
|
s.append(",author=").append(crypt.simpleEncode(comp.author()));
|
|
s.append(",tags=").append(crypt.simpleEncode(comp.tags()));
|
|
s.append(",ETag=").append(crypt.simpleEncode(comp.ETag()));
|
|
s.append(",mod=").append(plasmaURL.shortDayFormatter.format(moddate()));
|
|
s.append(",load=").append(plasmaURL.shortDayFormatter.format(loaddate()));
|
|
s.append(",fresh=").append(plasmaURL.shortDayFormatter.format(freshdate()));
|
|
s.append(",referrer=").append(referrerHash());
|
|
s.append(",md5=").append(md5());
|
|
s.append(",size=").append(size());
|
|
s.append(",wc=").append(wordCount());
|
|
s.append(",dt=").append(doctype());
|
|
s.append(",flags=").append(flags().exportB64());
|
|
s.append(",lang=").append(language());
|
|
s.append(",llocal=").append(llocal());
|
|
s.append(",lother=").append(lother());
|
|
s.append(",limage=").append(limage());
|
|
s.append(",laudio=").append(laudio());
|
|
s.append(",lvideo=").append(lvideo());
|
|
s.append(",lapp=").append(lapp());
|
|
|
|
if (this.word != null) {
|
|
// append also word properties
|
|
s.append(",wi=").append(kelondroBase64Order.enhancedCoder.encodeString(word.toPropertyForm()));
|
|
}
|
|
return s;
|
|
|
|
} catch (Exception e) {
|
|
// serverLog.logFailure("plasmaLURL.corePropList", e.getMessage());
|
|
// if (moddate == null) serverLog.logFailure("plasmaLURL.corePropList", "moddate=null");
|
|
// if (loaddate == null) serverLog.logFailure("plasmaLURL.corePropList", "loaddate=null");
|
|
// e.printStackTrace();
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public kelondroRow.Entry toRowEntry() throws IOException {
|
|
return this.entry;
|
|
}
|
|
|
|
public String hash() {
|
|
// return a url-hash, based on the md5 algorithm
|
|
// the result is a String of 12 bytes within a 72-bit space
|
|
// (each byte has an 6-bit range)
|
|
// that should be enough for all web pages on the world
|
|
return this.entry.getColString(col_hash, null);
|
|
}
|
|
|
|
public indexURLEntry.Components comp() {
|
|
ArrayList cl = nxTools.strings(this.entry.getCol("comp", null), "UTF-8");
|
|
return new indexURLEntry.Components(
|
|
(cl.size() > 0) ? ((String) cl.get(0)).trim() : "",
|
|
(cl.size() > 1) ? ((String) cl.get(1)).trim() : "",
|
|
(cl.size() > 2) ? ((String) cl.get(2)).trim() : "",
|
|
(cl.size() > 3) ? ((String) cl.get(3)).trim() : "",
|
|
(cl.size() > 4) ? ((String) cl.get(4)).trim() : "");
|
|
}
|
|
|
|
public Date moddate() {
|
|
return new Date(86400000 * entry.getColLong(col_mod));
|
|
}
|
|
|
|
public Date loaddate() {
|
|
return new Date(86400000 * entry.getColLong(col_load));
|
|
}
|
|
|
|
public Date freshdate() {
|
|
return new Date(86400000 * entry.getColLong(col_fresh));
|
|
}
|
|
|
|
public String referrerHash() {
|
|
// return the creator's hash
|
|
return entry.getColString(col_referrer, null);
|
|
}
|
|
|
|
public String md5() {
|
|
// returns the md5 in hex representation
|
|
return serverCodings.encodeHex(entry.getColBytes(col_md5));
|
|
}
|
|
|
|
public char doctype() {
|
|
return (char) entry.getColByte(col_dt);
|
|
}
|
|
|
|
public String language() {
|
|
return this.entry.getColString(col_lang, null);
|
|
}
|
|
|
|
public int size() {
|
|
return (int) this.entry.getColLong(col_size);
|
|
}
|
|
|
|
public kelondroBitfield flags() {
|
|
return new kelondroBitfield(this.entry.getColBytes(col_flags));
|
|
}
|
|
|
|
public int wordCount() {
|
|
return (int) this.entry.getColLong(col_wc);
|
|
}
|
|
|
|
public int llocal() {
|
|
return (int) this.entry.getColLong(col_llocal);
|
|
}
|
|
|
|
public int lother() {
|
|
return (int) this.entry.getColLong(col_lother);
|
|
}
|
|
|
|
public int limage() {
|
|
return (int) this.entry.getColLong(col_limage);
|
|
}
|
|
|
|
public int laudio() {
|
|
return (int) this.entry.getColLong(col_laudio);
|
|
}
|
|
|
|
public int lvideo() {
|
|
return (int) this.entry.getColLong(col_lvideo);
|
|
}
|
|
|
|
public int lapp() {
|
|
return (int) this.entry.getColLong(col_lapp);
|
|
}
|
|
|
|
public String snippet() {
|
|
// the snippet may appear here if the url was transported in a remote search
|
|
// it will not be saved anywhere, but can only be requested here
|
|
return snippet;
|
|
}
|
|
|
|
public indexRWIEntry word() {
|
|
return word;
|
|
}
|
|
|
|
public boolean isOlder(indexURLEntry other) {
|
|
if (other == null) return false;
|
|
Date tmoddate = moddate();
|
|
Date omoddate = other.moddate();
|
|
if (tmoddate.before(omoddate)) return true;
|
|
if (tmoddate.equals(omoddate)) {
|
|
Date tloaddate = loaddate();
|
|
Date oloaddate = other.loaddate();
|
|
if (tloaddate.before(oloaddate)) return true;
|
|
if (tloaddate.equals(oloaddate)) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public String toString(String snippet) {
|
|
// add information needed for remote transport
|
|
final StringBuffer core = corePropList();
|
|
if (core == null)
|
|
return null;
|
|
|
|
core.ensureCapacity(core.length() + snippet.length() * 2);
|
|
core.insert(0, "{");
|
|
core.append(",snippet=").append(crypt.simpleEncode(snippet));
|
|
core.append("}");
|
|
|
|
return new String(core);
|
|
//return "{" + core + ",snippet=" + crypt.simpleEncode(snippet) + "}";
|
|
}
|
|
|
|
public plasmaCrawlEntry toBalancerEntry() {
|
|
return new plasmaCrawlEntry(
|
|
null,
|
|
comp().url(),
|
|
referrerHash(),
|
|
comp().title(),
|
|
loaddate(),
|
|
null,
|
|
0,
|
|
0,
|
|
0);
|
|
}
|
|
|
|
/**
|
|
* Returns this object as String.<br>
|
|
* This e.g. looks like this:
|
|
* <pre>{hash=jmqfMk7Y3NKw,referrer=------------,mod=20050610,load=20051003,size=51666,wc=1392,cc=0,local=true,q=AEn,dt=h,lang=uk,url=b|aHR0cDovL3d3dy50cmFuc3BhcmVuY3kub3JnL3N1cnZleXMv,descr=b|S25vd2xlZGdlIENlbnRyZTogQ29ycnVwdGlvbiBTdXJ2ZXlzIGFuZCBJbmRpY2Vz}</pre>
|
|
*/
|
|
public String toString() {
|
|
final StringBuffer core = corePropList();
|
|
if (core == null) return null;
|
|
|
|
core.insert(0, "{");
|
|
core.append("}");
|
|
|
|
return new String(core);
|
|
//return "{" + core + "}";
|
|
}
|
|
|
|
public class Components {
|
|
private URL url;
|
|
private String title, author, tags, ETag;
|
|
|
|
public Components(String url, String title, String author, String tags, String ETag) {
|
|
try {
|
|
this.url = new URL(url);
|
|
} catch (MalformedURLException e) {
|
|
this.url = null;
|
|
}
|
|
this.title = title;
|
|
this.author = author;
|
|
this.tags = tags;
|
|
this.ETag = ETag;
|
|
}
|
|
public Components(URL url, String descr, String author, String tags, String ETag) {
|
|
this.url = url;
|
|
this.title = descr;
|
|
this.author = author;
|
|
this.tags = tags;
|
|
this.ETag = ETag;
|
|
}
|
|
public URL url() { return this.url; }
|
|
public String title() { return this.title; }
|
|
public String author() { return this.author; }
|
|
public String tags() { return this.tags; }
|
|
public String ETag() { return this.ETag; }
|
|
}
|
|
|
|
} |