com.browseengine.bobo.sort.LuceneCustomDocComparatorSource Maven / Gradle / Ivy
/**
* This software is licensed to you under the Apache License, Version 2.0 (the
* "Apache License").
*
* LinkedIn's contributions are made under the Apache License. If you contribute
* to the Software, the contributions will be deemed to have been made under the
* Apache License, unless you expressly indicate otherwise. Please do not make any
* contributions that would be inconsistent with the Apache License.
*
* You may obtain a copy of the Apache License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, this software
* distributed under the Apache License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Apache
* License for the specific language governing permissions and limitations for the
* software governed under the Apache License.
*
* © 2012 LinkedIn Corp. All Rights Reserved.
*/
package com.browseengine.bobo.sort;
import java.io.IOException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.FieldComparator;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.Scorer;
public class LuceneCustomDocComparatorSource extends DocComparatorSource {
private final FieldComparator _luceneComparator;
private final String _fieldname;
public LuceneCustomDocComparatorSource(String fieldname,FieldComparator luceneComparator){
_fieldname = fieldname;
_luceneComparator = luceneComparator;
}
@Override
public DocComparator getComparator(IndexReader reader, int docbase)
throws IOException {
_luceneComparator.setNextReader(reader, docbase);
return new DocComparator() {
@Override
public Comparable value(ScoreDoc doc) {
return _luceneComparator.value(doc.doc);
}
@Override
public int compare(ScoreDoc doc1, ScoreDoc doc2) {
return _luceneComparator.compare(doc1.doc, doc2.doc);
}
@Override
public DocComparator setScorer(Scorer scorer) {
_luceneComparator.setScorer(scorer);
return this;
}
};
}
}