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/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* 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.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.script.expression;
import org.apache.lucene.search.DoubleValuesSource;
import org.opensearch.index.fielddata.IndexFieldData;
/**
* Expressions API for geo_point fields.
*/
final class GeoField {
// no instance
private GeoField() {}
// supported variables
static final String EMPTY_VARIABLE = "empty";
static final String LAT_VARIABLE = "lat";
static final String LON_VARIABLE = "lon";
// supported methods
static final String ISEMPTY_METHOD = "isEmpty";
static final String GETLAT_METHOD = "getLat";
static final String GETLON_METHOD = "getLon";
static DoubleValuesSource getVariable(IndexFieldData fieldData, String fieldName, String variable) {
switch (variable) {
case EMPTY_VARIABLE:
return new GeoEmptyValueSource(fieldData);
case LAT_VARIABLE:
return new GeoLatitudeValueSource(fieldData);
case LON_VARIABLE:
return new GeoLongitudeValueSource(fieldData);
default:
throw new IllegalArgumentException("Member variable [" + variable + "] does not exist for geo field [" + fieldName + "].");
}
}
static DoubleValuesSource getMethod(IndexFieldData fieldData, String fieldName, String method) {
switch (method) {
case ISEMPTY_METHOD:
return new GeoEmptyValueSource(fieldData);
case GETLAT_METHOD:
return new GeoLatitudeValueSource(fieldData);
case GETLON_METHOD:
return new GeoLongitudeValueSource(fieldData);
default:
throw new IllegalArgumentException("Member method [" + method + "] does not exist for geo field [" + fieldName + "].");
}
}
}