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/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.index.query.xcontent;
import org.apache.lucene.search.Filter;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.AbstractIndexComponent;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.mapper.xcontent.geo.GeoPointFieldDataType;
import org.elasticsearch.index.mapper.xcontent.geo.GeoPointFieldMapper;
import org.elasticsearch.index.query.QueryParsingException;
import org.elasticsearch.index.search.geo.GeoBoundingBoxFilter;
import org.elasticsearch.index.search.geo.GeoHashUtils;
import org.elasticsearch.index.settings.IndexSettings;
import java.io.IOException;
import static org.elasticsearch.index.query.support.QueryParsers.*;
/**
* @author kimchy (shay.banon)
*/
public class GeoBoundingBoxFilterParser extends AbstractIndexComponent implements XContentFilterParser {
public static final String NAME = "geo_bounding_box";
@Inject public GeoBoundingBoxFilterParser(Index index, @IndexSettings Settings indexSettings) {
super(index, indexSettings);
}
@Override public String[] names() {
return new String[]{NAME, "geoBoundingBox"};
}
@Override public Filter parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
XContentParser parser = parseContext.parser();
boolean cache = false;
String fieldName = null;
GeoBoundingBoxFilter.Point topLeft = new GeoBoundingBoxFilter.Point();
GeoBoundingBoxFilter.Point bottomRight = new GeoBoundingBoxFilter.Point();
String filterName = null;
String currentFieldName = null;
XContentParser.Token token;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
fieldName = currentFieldName;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_ARRAY) {
GeoBoundingBoxFilter.Point point = null;
if ("top_left".equals(currentFieldName) || "topLeft".equals(currentFieldName)) {
point = topLeft;
} else if ("bottom_right".equals(currentFieldName) || "bottomRight".equals(currentFieldName)) {
point = bottomRight;
}
if (point != null) {
token = parser.nextToken();
point.lat = parser.doubleValue();
token = parser.nextToken();
point.lon = parser.doubleValue();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
}
}
} else if (token == XContentParser.Token.START_OBJECT) {
GeoBoundingBoxFilter.Point point = null;
if ("top_left".equals(currentFieldName) || "topLeft".equals(currentFieldName)) {
point = topLeft;
} else if ("bottom_right".equals(currentFieldName) || "bottomRight".equals(currentFieldName)) {
point = bottomRight;
}
if (point != null) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if (currentFieldName.equals(GeoPointFieldMapper.Names.LAT)) {
point.lat = parser.doubleValue();
} else if (currentFieldName.equals(GeoPointFieldMapper.Names.LON)) {
point.lon = parser.doubleValue();
} else if (currentFieldName.equals(GeoPointFieldMapper.Names.GEOHASH)) {
double[] values = GeoHashUtils.decode(parser.text());
point.lat = values[0];
point.lon = values[1];
}
}
}
}
} else if (token.isValue()) {
if ("field".equals(currentFieldName)) {
fieldName = parser.text();
} else {
GeoBoundingBoxFilter.Point point = null;
if ("top_left".equals(currentFieldName) || "topLeft".equals(currentFieldName)) {
point = topLeft;
} else if ("bottom_right".equals(currentFieldName) || "bottomRight".equals(currentFieldName)) {
point = bottomRight;
}
if (point != null) {
String value = parser.text();
int comma = value.indexOf(',');
if (comma != -1) {
point.lat = Double.parseDouble(value.substring(0, comma).trim());
point.lon = Double.parseDouble(value.substring(comma + 1).trim());
} else {
double[] values = GeoHashUtils.decode(value);
point.lat = values[0];
point.lon = values[1];
}
}
}
}
}
} else if (token.isValue()) {
if ("_name".equals(currentFieldName)) {
filterName = parser.text();
} else if ("_cache".equals(currentFieldName)) {
cache = parser.booleanValue();
}
}
}
MapperService mapperService = parseContext.mapperService();
FieldMapper mapper = mapperService.smartNameFieldMapper(fieldName);
if (mapper == null) {
throw new QueryParsingException(index, "failed to find geo_point field [" + fieldName + "]");
}
if (mapper.fieldDataType() != GeoPointFieldDataType.TYPE) {
throw new QueryParsingException(index, "field [" + fieldName + "] is not a geo_point field");
}
fieldName = mapper.names().indexName();
Filter filter = new GeoBoundingBoxFilter(topLeft, bottomRight, fieldName, parseContext.indexCache().fieldData());
if (cache) {
filter = parseContext.cacheFilter(filter);
}
filter = wrapSmartNameFilter(filter, parseContext.smartFieldMappers(fieldName), parseContext);
if (filterName != null) {
parseContext.addNamedFilter(filterName, filter);
}
return filter;
}
}