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Elasticsearch subproject :server
/*
* 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.index.fielddata;
import org.apache.lucene.index.DocValues;
import org.apache.lucene.index.NumericDocValues;
import org.apache.lucene.index.SortedNumericDocValues;
import org.elasticsearch.common.geo.GeoPoint;
import java.io.IOException;
/**
* A stateful lightweight per document set of {@link GeoPoint} values.
* To iterate over values in a document use the following pattern:
*
* MultiGeoPointValues values = ..;
* values.advanceExact(docId);
* final int numValues = values.docValueCount();
* for (int i = 0; i < numValues; i++) {
* GeoPoint value = values.nextValue();
* // process value
* }
*
* The set of values associated with a document might contain duplicates and
* comes in a non-specified order.
*/
public class MultiGeoPointValues extends MultiPointValues {
private final GeoPoint point = new GeoPoint();
public MultiGeoPointValues(SortedNumericDocValues numericValues) {
super(numericValues);
}
@Override
public GeoPoint nextValue() throws IOException {
return point.resetFromEncoded(numericValues.nextValue());
}
/**
* Returns a single-valued view of the {@link MultiPointValues} if possible, otherwise null.
*/
@Override
protected GeoPointValues getPointValues() {
final NumericDocValues singleton = DocValues.unwrapSingleton(numericValues);
return singleton != null ? new GeoPointValues(singleton) : null;
}
}