mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-19 00:01:41 +02:00
3c7220bc7b
used for rwi ranking. Main changes: - introduce a posintext() to access the stored value. This reduces also mem alloc of position array for WordReferenceRow (index access) - use the positions() array for joined references on multi-word queries if needed (otherwise allow positions() to be null - adjust assignments and the min() max() and distance() calculation accordingly
84 lines
2.6 KiB
Java
84 lines
2.6 KiB
Java
// Reference.java
|
|
// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
|
|
// first published 03.04.2009 on http://yacy.net
|
|
//
|
|
// This is a part of YaCy, a peer-to-peer based web search engine
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
// 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 net.yacy.kelondro.rwi;
|
|
|
|
import java.util.Collection;
|
|
|
|
import net.yacy.kelondro.index.Row.Entry;
|
|
|
|
public interface Reference {
|
|
|
|
public String toPropertyForm();
|
|
|
|
public Entry toKelondroEntry();
|
|
|
|
public byte[] urlhash();
|
|
|
|
public long lastModified();
|
|
|
|
@Override
|
|
public String toString();
|
|
|
|
public boolean isOlder(Reference other);
|
|
|
|
@Override
|
|
public int hashCode();
|
|
|
|
@Override
|
|
public boolean equals(Object other);
|
|
|
|
/**
|
|
* Joins a Reference into this one, setting the values appropriate for ranking
|
|
* @param joined reference
|
|
*/
|
|
public void join(final Reference oe);
|
|
|
|
/**
|
|
* First positon of word in text.
|
|
* Word position is not calculated for titles, for all title words it defaults to 0.
|
|
* @return min word position starting at 1 (0 if undefined)
|
|
*/
|
|
public int posintext();
|
|
|
|
/**
|
|
* Positions of search query words for the referenced result url
|
|
* This is only valid for multi word search queries.
|
|
* The positions contain the first word position for every joined search query word
|
|
* which has been joined (by join() )
|
|
* @return list with word position (excl. the posintext of this reference) or null
|
|
*/
|
|
public Collection<Integer> positions();
|
|
|
|
/**
|
|
* The average distance (in words) between search query terms for multi word searches.
|
|
* The distance is calculated from posintext() and positions()
|
|
* @return word distance
|
|
*/
|
|
public int distance();
|
|
|
|
}
|