/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.nutch.scoring.tld;
import java.util.List;
import java.util.Collection;
import java.util.Map.Entry;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.nutch.crawl.CrawlDatum;
import org.apache.nutch.crawl.Inlinks;
import org.apache.nutch.indexer.NutchDocument;
import org.apache.nutch.indexer.NutchField;
import org.apache.nutch.parse.Parse;
import org.apache.nutch.parse.ParseData;
import org.apache.nutch.protocol.Content;
import org.apache.nutch.scoring.ScoringFilter;
import org.apache.nutch.scoring.ScoringFilterException;
import org.apache.nutch.util.domain.DomainSuffix;
import org.apache.nutch.util.domain.DomainSuffixes;
/**
* Scoring filter to boost tlds.
* @author Enis Soztutar <enis.soz.nutch@gmail.com>
*/
public class TLDScoringFilter implements ScoringFilter {
private Configuration conf;
private DomainSuffixes tldEntries;
public TLDScoringFilter() {
tldEntries = DomainSuffixes.getInstance();
}
public float indexerScore(Text url, NutchDocument doc, CrawlDatum dbDatum,
CrawlDatum fetchDatum, Parse parse, Inlinks inlinks, float initScore)
throws ScoringFilterException {
NutchField tlds = doc.getField("tld");
float boost = 1.0f;
if(tlds != null) {
for(Object tld : tlds.getValues()) {
DomainSuffix entry = tldEntries.get(tld.toString());
if(entry != null)
boost *= entry.getBoost();
}
}
return initScore * boost;
}
public CrawlDatum distributeScoreToOutlink(Text fromUrl, Text toUrl,
ParseData parseData, CrawlDatum target, CrawlDatum adjust, int allCount,
int validCount) throws ScoringFilterException {
return adjust;
}
public float generatorSortValue(Text url, CrawlDatum datum, float initSort)
throws ScoringFilterException {
return initSort;
}
public void initialScore(Text url, CrawlDatum datum)
throws ScoringFilterException {
}
public void injectedScore(Text url, CrawlDatum datum)
throws ScoringFilterException {
}
public void passScoreAfterParsing(Text url, Content content, Parse parse)
throws ScoringFilterException {
}
public void passScoreBeforeParsing(Text url, CrawlDatum datum, Content content)
throws ScoringFilterException {
}
public void updateDbScore(Text url, CrawlDatum old,
CrawlDatum datum, List<CrawlDatum> inlinked)
throws ScoringFilterException {
}
public Configuration getConf() {
return conf;
}
public void setConf(Configuration conf) {
this.conf = conf;
}
public CrawlDatum distributeScoreToOutlinks(Text fromUrl, ParseData parseData,
Collection<Entry<Text, CrawlDatum>> targets, CrawlDatum adjust,
int allCount) throws ScoringFilterException {
return adjust;
}
}