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yacy_search_server/source/de/anomic/index/indexRIReader.java

42 lines
1.6 KiB

// indexRIReader.java
// (C) 2008 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
// first published 2.4.2008 on http://yacy.net
//
// This is a part of YaCy, a peer-to-peer based web search engine
//
// $LastChangedDate: 2008-03-14 01:16:04 +0100 (Fr, 14 Mrz 2008) $
// $LastChangedRevision: 4558 $
// $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.util.Set;
import de.anomic.kelondro.order.CloneableIterator;
public interface indexRIReader {
public int size();
public boolean hasContainer(String wordHash); // should only be used if in case that true is returned the getContainer is NOT called
public indexContainer getContainer(String wordHash, Set<String> urlselection);
replaced old DHT transmission method with new method. Many things have changed! some of them: - after a index selection is made, the index is splitted into its vertical components - from differrent index selctions the splitted components can be accumulated before they are placed into the transmission queue - each splitted chunk gets its own transmission thread - multiple transmission threads are started concurrently - the process can be monitored with the blocking queue servlet To implement that, a new package de.anomic.yacy.dht was created. Some old files have been removed. The new index distribution model using a vertical DHT was implemented. An abstraction of this model is implemented in the new dht package as interface. The freeworld network has now a configuration of two vertial partitions; sixteen partitions are planned and will be configured if the process is bug-free. This modification has three main targets: - enhance the DHT transmission speed - with a vertical DHT, a search will speed up. With two partitions, two times. With sixteen, sixteen times. - the vertical DHT will apply a semi-dht for URLs, and peers will receive a fraction of the overall URLs they received before. with two partitions, the fractions will be halve. With sixteen partitions, a 1/16 of the previous number of URLs. BE CAREFULL, THIS IS A MAJOR CODE CHANGE, POSSIBLY FULL OF BUGS AND HARMFUL THINGS. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5586 6c8d7289-2bf4-0310-a012-ef5d649a1542
16 years ago
public CloneableIterator<indexContainer> wordContainerIterator(String startWordHash, boolean rot, boolean ram);
public void close();
}