to store the index entry. This is another step to move to the new database structure. A side effect of this change is, that index storage uses much less RAM space, which affects the index RAM cache. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2341 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
orbiter
19 years ago
parent
0b7112f8b2
commit
c4e922885a
@ -1,153 +0,0 @@
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// indexbstractEntry.java
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// (C) 2006 by Michael Peter Christen; mc@anomic.de, Frankfurt a. M., Germany
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// first published 20.05.2006 on http://www.anomic.de
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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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.index;
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import de.anomic.plasma.plasmaWordIndex;
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public abstract class indexAbstractEntry implements indexEntry {
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// the associated hash
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protected String urlHash;
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// discrete values
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protected int hitcount; // number of this words in file
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protected int wordcount; // number of all words in the file
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protected int phrasecount; // number of all phrases in the file
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protected int posintext; // first position of the word in text as number of word; 0=unknown or irrelevant position
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protected int posinphrase; // position within a phrase of the word
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protected int posofphrase; // position of the phrase in the text as count of sentences; 0=unknown; 1=path; 2=keywords; 3=headline; >4: in text
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protected int worddistance;// distance between the words, only used if the index is artificial (from a conjunction)
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protected long lastModified;// calculated by using last-modified
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protected int quality; // result of a heuristic on the source file
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protected byte[] language; // essentially the country code (the TLD as heuristic), two letters lowercase only
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protected char doctype; // type of source
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protected char localflag; // indicates if the index was created locally
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public abstract Object clone();
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public abstract String toEncodedStringForm();
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public abstract byte[] toEncodedByteArrayForm();
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public abstract String toPropertyForm();
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public void combineDistance(indexEntry oe) {
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this.worddistance = this.worddistance + ((indexAbstractEntry) oe).worddistance + Math.abs(this.posintext - ((indexAbstractEntry) oe).posintext);
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this.posintext = Math.min(this.posintext, ((indexAbstractEntry) oe).posintext);
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if (this.posofphrase != ((indexAbstractEntry) oe).posofphrase) this.posinphrase = 0; // (unknown)
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this.posofphrase = Math.min(this.posofphrase, ((indexAbstractEntry) oe).posofphrase);
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this.wordcount = (this.wordcount + ((indexAbstractEntry) oe).wordcount) / 2;
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}
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public void min(indexEntry other) {
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if (this.hitcount > ((indexAbstractEntry) other).hitcount) this.hitcount = ((indexAbstractEntry) other).hitcount;
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if (this.wordcount > ((indexAbstractEntry) other).wordcount) this.wordcount = ((indexAbstractEntry) other).wordcount;
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if (this.phrasecount > ((indexAbstractEntry) other).phrasecount) this.phrasecount = ((indexAbstractEntry) other).phrasecount;
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if (this.posintext > ((indexAbstractEntry) other).posintext) this.posintext = ((indexAbstractEntry) other).posintext;
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if (this.posinphrase > ((indexAbstractEntry) other).posinphrase) this.posinphrase = ((indexAbstractEntry) other).posinphrase;
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if (this.posofphrase > ((indexAbstractEntry) other).posofphrase) this.posofphrase = ((indexAbstractEntry) other).posofphrase;
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if (this.worddistance > ((indexAbstractEntry) other).worddistance) this.worddistance = ((indexAbstractEntry) other).worddistance;
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if (this.lastModified > ((indexAbstractEntry) other).lastModified) this.lastModified = ((indexAbstractEntry) other).lastModified;
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if (this.quality > ((indexAbstractEntry) other).quality) this.quality = ((indexAbstractEntry) other).quality;
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}
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public void max(indexEntry other) {
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if (this.hitcount < ((indexAbstractEntry) other).hitcount) this.hitcount = ((indexAbstractEntry) other).hitcount;
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if (this.wordcount < ((indexAbstractEntry) other).wordcount) this.wordcount = ((indexAbstractEntry) other).wordcount;
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if (this.phrasecount < ((indexAbstractEntry) other).phrasecount) this.phrasecount = ((indexAbstractEntry) other).phrasecount;
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if (this.posintext < ((indexAbstractEntry) other).posintext) this.posintext = ((indexAbstractEntry) other).posintext;
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if (this.posinphrase < ((indexAbstractEntry) other).posinphrase) this.posinphrase = ((indexAbstractEntry) other).posinphrase;
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if (this.posofphrase < ((indexAbstractEntry) other).posofphrase) this.posofphrase = ((indexAbstractEntry) other).posofphrase;
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if (this.worddistance < ((indexAbstractEntry) other).worddistance) this.worddistance = ((indexAbstractEntry) other).worddistance;
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if (this.lastModified < ((indexAbstractEntry) other).lastModified) this.lastModified = ((indexAbstractEntry) other).lastModified;
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if (this.quality < ((indexAbstractEntry) other).quality) this.quality = ((indexAbstractEntry) other).quality;
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}
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public void normalize(indexEntry mi, indexEntry ma) {
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indexAbstractEntry min = (indexAbstractEntry) mi;
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indexAbstractEntry max = (indexAbstractEntry) ma;
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this.hitcount = (this.hitcount == 0) ? 0 : 1 + 255 * (this.hitcount - min.hitcount ) / (1 + max.hitcount - min.hitcount);
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this.wordcount = (this.wordcount == 0) ? 0 : 1 + 255 * (this.wordcount - min.wordcount ) / (1 + max.wordcount - min.wordcount);
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this.phrasecount = (this.phrasecount == 0) ? 0 : 1 + 255 * (this.phrasecount - min.phrasecount ) / (1 + max.phrasecount - min.phrasecount);
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this.posintext = (this.posintext == 0) ? 0 : 1 + 255 * (this.posintext - min.posintext ) / (1 + max.posintext - min.posintext);
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this.posinphrase = (this.posinphrase == 0) ? 0 : 1 + 255 * (this.posinphrase - min.posinphrase ) / (1 + max.posinphrase - min.posinphrase);
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this.posofphrase = (this.posofphrase == 0) ? 0 : 1 + 255 * (this.posofphrase - min.posofphrase ) / (1 + max.posofphrase - min.posofphrase);
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this.worddistance = (this.worddistance == 0) ? 0 : 1 + 255 * (this.worddistance - min.worddistance) / (1 + max.worddistance - min.worddistance);
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this.lastModified = (this.lastModified == 0) ? 0 : 1 + 255 * (this.lastModified - min.lastModified) / (1 + max.lastModified - min.lastModified);
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this.quality = (this.quality == 0) ? 0 : 1 + 255 * (this.quality - min.quality ) / (1 + max.quality - min.quality);
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}
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public indexEntry generateNormalized(indexEntry min, indexEntry max) {
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indexEntry e = (indexAbstractEntry) this.clone();
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e.normalize(min, max);
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return e;
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}
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public String urlHash() { return urlHash; }
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public int quality() { return quality; }
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public int virtualAge() { return plasmaWordIndex.microDateDays(lastModified); }
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public long lastModified() { return lastModified; }
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public int hitcount() { return hitcount; }
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public int posintext() { return posintext; }
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public int posinphrase() { return posinphrase; }
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public int posofphrase() { return posofphrase; }
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public int worddistance() { return worddistance; }
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public int wordcount() { return wordcount; }
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public int phrasecount() { return phrasecount; }
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public String getLanguage() { return new String(language); }
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public char getType() { return doctype; }
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public boolean isLocal() { return localflag == indexEntryAttribute.LT_LOCAL; }
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public boolean isNewer(indexEntry other) {
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if (other == null) return true;
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if (this.lastModified > ((indexAbstractEntry) other).lastModified) return true;
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if (this.lastModified == ((indexAbstractEntry) other).lastModified()) {
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if (this.quality > ((indexAbstractEntry) other).quality) return true;
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}
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return false;
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}
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public boolean isOlder(indexEntry other) {
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if (other == null) return false;
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if (this.lastModified < ((indexAbstractEntry) other).lastModified()) return true;
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if (this.lastModified == ((indexAbstractEntry) other).lastModified()) {
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if (this.quality < ((indexAbstractEntry) other).quality) return true;
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}
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return false;
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}
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public int domlengthNormalized() {
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return 255 * indexURL.domLengthEstimation(this.urlHash) / 30;
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}
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public static void main(String[] args) {
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// outputs the word hash to a given word
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if (args.length != 1) System.exit(0);
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System.out.println("WORDHASH: " + indexEntryAttribute.word2hash(args[0]));
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}
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}
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@ -1,207 +0,0 @@
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// indexURLEntry.java
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// (C) 2004, 2005, 2006 by Michael Peter Christen; mc@anomic.de, Frankfurt a. M., Germany
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// first published 2004 on http://www.anomic.de
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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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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/*
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This class defines the structures of an index entry for URLs
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*/
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package de.anomic.index;
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import java.util.Properties;
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import de.anomic.index.indexEntry;
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import de.anomic.index.indexEntryAttribute;
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import de.anomic.index.indexAbstractEntry;
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import de.anomic.index.indexURL;
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import de.anomic.kelondro.kelondroBase64Order;
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import de.anomic.kelondro.kelondroRow;
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import de.anomic.kelondro.kelondroRow.Entry;
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import de.anomic.plasma.plasmaWordIndex;
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public final class indexURLEntry extends indexAbstractEntry implements Cloneable, indexEntry {
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// the class instantiation can only be done by a plasmaStore method
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// therefore they are all public
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public indexURLEntry(String urlHash,
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int urlLength, // byte-length of complete URL
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int urlComps, // number of path components
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int titleLength, // length of description/length (longer are better?)
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int hitcount, //*how often appears this word in the text
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int wordcount, //*total number of words
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int phrasecount, //*total number of phrases
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int posintext, //*position of word in all words
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int posinphrase, //*position of word in its phrase
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int posofphrase, //*number of the phrase where word appears
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int distance, //*word distance; this is 0 by default, and set to the difference of posintext from two indexes if these are combined (simultanous search). If stored, this shows that the result was obtained by remote search
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int sizeOfPage, // # of bytes of the page
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long lastmodified, //*last-modified time of the document where word appears
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long updatetime, // update time; this is needed to compute a TTL for the word, so it can be removed easily if the TTL is short
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int quality, //*the entropy value
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String language, //*(guessed) language of document
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char doctype, //*type of document
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int outlinksSame, // outlinks to same domain
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int outlinksOther,// outlinks to other domain
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boolean local //*flag shows that this index was generated locally; othervise its from a remote peer
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) {
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// more needed attributes:
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// - boolean: appearance attributes: title, appears in header, anchor-descr, image-tag etc
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// - boolean: URL attributes
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if ((language == null) || (language.length() != indexURL.urlLanguageLength)) language = "uk";
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this.urlHash = urlHash;
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this.hitcount = hitcount;
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this.wordcount = wordcount;
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this.phrasecount = phrasecount;
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this.posintext = posintext;
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this.posinphrase = posinphrase;
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this.posofphrase = posofphrase;
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this.worddistance = distance;
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this.lastModified = lastmodified;
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this.quality = quality;
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this.language = language.getBytes();
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this.doctype = doctype;
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this.localflag = (local) ? indexEntryAttribute.LT_LOCAL : indexEntryAttribute.LT_GLOBAL;
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}
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public indexURLEntry(String urlHash, String code) {
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// the code is not parsed but used later on
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this.urlHash = urlHash;
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this.hitcount = (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(6, 8));
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this.lastModified = plasmaWordIndex.reverseMicroDateDays((int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(3, 6)));
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this.quality = (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(0, 3));
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this.language = code.substring(8, 10).getBytes();
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this.doctype = code.charAt(10);
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this.localflag = code.charAt(11);
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this.posintext = (code.length() >= 14) ? (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(12, 14)) : 0;
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this.posinphrase = (code.length() >= 15) ? (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(14, 16)) : 0;
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this.posofphrase = (code.length() >= 17) ? (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(16, 18)) : 0;
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this.worddistance = (code.length() >= 19) ? (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(18, 20)) : 0;
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this.wordcount = (code.length() >= 21) ? (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(20, 22)) : 0;
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this.phrasecount = (code.length() >= 23) ? (int) kelondroBase64Order.enhancedCoder.decodeLong(code.substring(22, 24)) : 0;
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if (hitcount == 0) hitcount = 1;
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if (wordcount == 0) wordcount = 1000;
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if (phrasecount == 0) phrasecount = 100;
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}
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public indexURLEntry(String external) {
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// parse external form
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String[] elts = external.substring(1, external.length() - 1).split(",");
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Properties pr = new Properties();
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int p;
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for (int i = 0; i < elts.length; i++) {
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pr.put(elts[i].substring(0, (p = elts[i].indexOf("="))), elts[i].substring(p + 1));
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}
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// set values
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this.urlHash = pr.getProperty("h", "");
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this.hitcount = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("c", "A"));
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this.wordcount = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("w", "__"));
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this.phrasecount = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("p", "__"));
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this.posintext = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("t", "__"));
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this.posinphrase = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("r", "__"));
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this.posofphrase = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("o", "__"));
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this.worddistance = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("i", "__"));
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this.lastModified = plasmaWordIndex.reverseMicroDateDays((int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("a", "A")));
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this.quality = (int) kelondroBase64Order.enhancedCoder.decodeLong(pr.getProperty("q", "__"));
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this.language = pr.getProperty("l", "uk").getBytes();
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this.doctype = pr.getProperty("d", "u").charAt(0);
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this.localflag = pr.getProperty("f", ""+indexEntryAttribute.LT_LOCAL).charAt(0);
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}
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public Object clone() {
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return new indexURLEntry(this.toPropertyForm());
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}
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public static int encodedStringFormLength() {
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// the size of the index entry attributes when encoded to string
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return 24;
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}
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public String toEncodedStringForm() {
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// attention: this integrates NOT the URL hash into the encoding
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// if you need a complete dump, use toExternalForm()
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StringBuffer buf = new StringBuffer(encodedStringFormLength());
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buf.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.quality, indexURL.urlQualityLength))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(plasmaWordIndex.microDateDays(this.lastModified), 3))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.hitcount, 2))
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.append(new String(this.language))
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.append(this.doctype)
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.append(this.localflag)
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.posintext, 2))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.posinphrase, 2))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.posofphrase, 2))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.worddistance, 2))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.wordcount, 2))
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.append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.phrasecount, 2)); // 3+3+2+2+1+1+2+2+2+2+2+2= 24 bytes
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return buf.toString();
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}
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public static int encodedByteArrayFormLength() {
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// the size of the index entry attributes when encoded to string
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return encodedStringFormLength();
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}
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public byte[] toEncodedByteArrayForm() {
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return toEncodedStringForm().getBytes();
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}
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public Entry toKelondroEntry() {
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kelondroRow.Entry entry = indexURLEntryNew.urlEntryRow.newEntry(toEncodedByteArrayForm());
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return entry;
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}
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public String toPropertyForm() {
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StringBuffer str = new StringBuffer(61);
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str.append("{")
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.append( "h=").append(this.urlHash)
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.append(",q=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.quality, indexURL.urlQualityLength))
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.append(",a=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(plasmaWordIndex.microDateDays(this.lastModified), 3))
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.append(",c=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.hitcount, 2))
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.append(",l=").append(new String(this.language))
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.append(",d=").append(this.doctype)
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.append(",f=").append(this.localflag)
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.append(",t=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.posintext, 2))
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.append(",r=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.posinphrase, 2))
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.append(",o=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.posofphrase, 2))
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.append(",i=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.worddistance, 2))
|
||||
.append(",w=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.wordcount, 2))
|
||||
.append(",p=").append(kelondroBase64Order.enhancedCoder.encodeLongSmart(this.phrasecount, 2))
|
||||
.append("}");
|
||||
|
||||
return str.toString();
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
// outputs the word hash to a given word
|
||||
if (args.length != 1) System.exit(0);
|
||||
System.out.println("WORDHASH: " + indexEntryAttribute.word2hash(args[0]));
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in new issue