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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.search.aggregations.bucket.geogrid;
import org.elasticsearch.index.fielddata.AbstractSortingNumericDocValues;
import org.elasticsearch.index.fielddata.MultiGeoPointValues;
import java.io.IOException;
/**
* Class representing the long-encoded grid-cells belonging to
* the geo-doc-values. Class must encode the values and then
* sort them in order to account for the cells correctly.
*/
abstract class CellValues extends AbstractSortingNumericDocValues {
private MultiGeoPointValues geoValues;
protected int precision;
protected CellValues(MultiGeoPointValues geoValues, int precision) {
this.geoValues = geoValues;
this.precision = precision;
}
@Override
public boolean advanceExact(int docId) throws IOException {
if (geoValues.advanceExact(docId)) {
int docValueCount = geoValues.docValueCount();
resize(docValueCount);
int j = 0;
for (int i = 0; i < docValueCount; i++) {
j = advanceValue(geoValues.nextValue(), j);
}
resize(j);
sort();
return true;
} else {
return false;
}
}
/**
* Sets the appropriate long-encoded value for target
* in values
.
*
* @param target the geo-value to encode
* @param valuesIdx the index into values
to set
* @return valuesIdx + 1 if value was set, valuesIdx otherwise.
*/
abstract int advanceValue(org.elasticsearch.common.geo.GeoPoint target, int valuesIdx);
}