/*
* 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.index.fielddata;
import org.apache.lucene.index.NumericDocValues;
import org.apache.lucene.util.NumericUtils;
import java.io.IOException;
/**
* {@link NumericDocValues} instance that wraps a {@link NumericDoubleValues}
* and converts the doubles to sortable long bits using
* {@link NumericUtils#doubleToSortableLong(double)}.
*/
final class SortableLongBitsNumericDocValues extends AbstractNumericDocValues {
private int docID = -1;
private final NumericDoubleValues values;
SortableLongBitsNumericDocValues(NumericDoubleValues values) {
this.values = values;
}
@Override
public long longValue() throws IOException {
return NumericUtils.doubleToSortableLong(values.doubleValue());
}
@Override
public boolean advanceExact(int target) throws IOException {
docID = target;
return values.advanceExact(target);
}
@Override
public int docID() {
return docID;
}
/** Return the wrapped values. */
public NumericDoubleValues getDoubleValues() {
return values;
}
}