org.elasticsearch.common.lucene.MinimumScoreCollector Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.lucene;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.search.*;
import java.io.IOException;
/**
*
*/
public class MinimumScoreCollector extends SimpleCollector {
private final Collector collector;
private final float minimumScore;
private Scorer scorer;
private LeafCollector leafCollector;
public MinimumScoreCollector(Collector collector, float minimumScore) {
this.collector = collector;
this.minimumScore = minimumScore;
}
@Override
public void setScorer(Scorer scorer) throws IOException {
if (!(scorer instanceof ScoreCachingWrappingScorer)) {
scorer = new ScoreCachingWrappingScorer(scorer);
}
this.scorer = scorer;
leafCollector.setScorer(scorer);
}
@Override
public void collect(int doc) throws IOException {
if (scorer.score() >= minimumScore) {
leafCollector.collect(doc);
}
}
@Override
public void doSetNextReader(LeafReaderContext context) throws IOException {
leafCollector = collector.getLeafCollector(context);
}
@Override
public boolean needsScores() {
return true;
}
}