org.elasticsearch.index.fielddata.fieldcomparator.BytesRefFieldComparatorSource Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*/
package org.elasticsearch.index.fielddata.fieldcomparator;
import org.apache.lucene.search.FieldComparator;
import org.apache.lucene.search.SortField;
import org.elasticsearch.index.fielddata.IndexFieldData;
import java.io.IOException;
/**
*/
public class BytesRefFieldComparatorSource extends IndexFieldData.XFieldComparatorSource {
private final IndexFieldData indexFieldData;
private final SortMode sortMode;
public BytesRefFieldComparatorSource(IndexFieldData indexFieldData, SortMode sortMode) {
this.indexFieldData = indexFieldData;
this.sortMode = sortMode;
}
@Override
public SortField.Type reducedType() {
return SortField.Type.STRING;
}
@Override
public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {
assert fieldname.equals(indexFieldData.getFieldNames().indexName());
if (indexFieldData.valuesOrdered() && indexFieldData instanceof IndexFieldData.WithOrdinals) {
return new BytesRefOrdValComparator((IndexFieldData.WithOrdinals) indexFieldData, numHits, sortMode);
}
return new BytesRefValComparator(indexFieldData, numHits, sortMode);
}
}