org.elasticsearch.search.aggregations.bucket.geogrid.CellValues Maven / Gradle / Ivy
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Elasticsearch subproject :server
/*
* 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.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 CellIdSource.GeoPointLongEncoder encoder;
protected CellValues(MultiGeoPointValues geoValues, int precision, CellIdSource.GeoPointLongEncoder encoder) {
this.geoValues = geoValues;
this.precision = precision;
this.encoder = encoder;
}
@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);
}