org.elasticsearch.index.fielddata.fieldcomparator.DoubleValuesComparatorSource Maven / Gradle / Ivy
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* 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,
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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.common.Nullable;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import java.io.IOException;
/**
*/
public class DoubleValuesComparatorSource extends IndexFieldData.XFieldComparatorSource {
private final IndexNumericFieldData indexFieldData;
private final Object missingValue;
private final SortMode sortMode;
public DoubleValuesComparatorSource(IndexNumericFieldData indexFieldData, @Nullable Object missingValue, SortMode sortMode) {
this.indexFieldData = indexFieldData;
this.missingValue = missingValue;
this.sortMode = sortMode;
}
@Override
public SortField.Type reducedType() {
return SortField.Type.DOUBLE;
}
@Override
public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {
assert fieldname.equals(indexFieldData.getFieldNames().indexName());
final double dMissingValue = (Double) missingObject(missingValue, reversed);
return new DoubleValuesComparator(indexFieldData, dMissingValue, numHits, sortMode);
}
}