/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.reference.doc.lucene;
import io.crate.exceptions.GroupByOnArrayUnsupportedException;
import io.crate.types.DataType;
import io.crate.types.DataTypes;
import org.apache.lucene.index.AtomicReaderContext;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.index.fielddata.GeoPointValues;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
public class GeoPointColumnReference extends FieldCacheExpression<IndexGeoPointFieldData, Double[]> {
private GeoPointValues values;
public GeoPointColumnReference(String columnName) {
super(columnName);
}
@Override
public Double[] value() {
switch (values.setDocument(docId)) {
case 0:
return null;
case 1:
GeoPoint gp = values.nextValue();
return new Double[] { gp.lon(), gp.lat() };
default:
throw new GroupByOnArrayUnsupportedException(columnName());
}
}
@Override
public void setNextReader(AtomicReaderContext context) {
super.setNextReader(context);
values = indexFieldData.load(context).getGeoPointValues();
}
@Override
public DataType returnType() {
return DataTypes.GEO_POINT;
}
@Override
public boolean equals(Object obj) {
if (obj == null)
return false;
if (obj == this)
return true;
if (!(obj instanceof GeoPointColumnReference))
return false;
return columnName.equals(((GeoPointColumnReference) obj).columnName);
}
}