All Downloads are FREE. Search and download functionalities are using the official Maven repository.
Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.elasticsearch.search.facet.geodistance.GeoDistanceFacetParser Maven / Gradle / Ivy
ElasticSearch - Open Source, Distributed, RESTful Search Engine
/*
* 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.search.facet.geodistance;
import com.google.common.collect.Lists;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.geo.GeoDistance;
import org.elasticsearch.common.geo.GeoHashUtils;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.common.geo.GeoUtils;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.DistanceUnit;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.index.mapper.geo.GeoPointFieldMapper;
import org.elasticsearch.search.facet.FacetExecutor;
import org.elasticsearch.search.facet.FacetParser;
import org.elasticsearch.search.facet.FacetPhaseExecutionException;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
*
*/
public class GeoDistanceFacetParser extends AbstractComponent implements FacetParser {
@Inject
public GeoDistanceFacetParser(Settings settings) {
super(settings);
InternalGeoDistanceFacet.registerStreams();
}
@Override
public String[] types() {
return new String[]{GeoDistanceFacet.TYPE, "geoDistance"};
}
@Override
public FacetExecutor.Mode defaultMainMode() {
return FacetExecutor.Mode.COLLECTOR;
}
@Override
public FacetExecutor.Mode defaultGlobalMode() {
return FacetExecutor.Mode.COLLECTOR;
}
@Override
public FacetExecutor parse(String facetName, XContentParser parser, SearchContext context) throws IOException {
String fieldName = null;
String valueFieldName = null;
String valueScript = null;
String scriptLang = null;
Map params = null;
GeoPoint point = new GeoPoint();
DistanceUnit unit = DistanceUnit.KILOMETERS;
GeoDistance geoDistance = GeoDistance.ARC;
List entries = Lists.newArrayList();
boolean normalizeLon = true;
boolean normalizeLat = true;
XContentParser.Token token;
String currentName = parser.currentName();
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentName = parser.currentName();
} else if (token == XContentParser.Token.START_ARRAY) {
if ("ranges".equals(currentName) || "entries".equals(currentName)) {
// "ranges" : [
// { "from" : 0, "to" : 12.5 }
// { "from" : 12.5 }
// ]
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
double from = Double.NEGATIVE_INFINITY;
double to = Double.POSITIVE_INFINITY;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentName = parser.currentName();
} else if (token.isValue()) {
if ("from".equals(currentName)) {
from = parser.doubleValue();
} else if ("to".equals(currentName)) {
to = parser.doubleValue();
}
}
}
entries.add(new GeoDistanceFacet.Entry(from, to, 0, 0, 0, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY));
}
} else {
token = parser.nextToken();
point.resetLon(parser.doubleValue());
token = parser.nextToken();
point.resetLat(parser.doubleValue());
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
}
fieldName = currentName;
}
} else if (token == XContentParser.Token.START_OBJECT) {
if ("params".equals(currentName)) {
params = parser.map();
} else {
// the json in the format of -> field : { lat : 30, lon : 12 }
fieldName = currentName;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentName = parser.currentName();
} else if (token.isValue()) {
if (currentName.equals(GeoPointFieldMapper.Names.LAT)) {
point.resetLat(parser.doubleValue());
} else if (currentName.equals(GeoPointFieldMapper.Names.LON)) {
point.resetLon(parser.doubleValue());
} else if (currentName.equals(GeoPointFieldMapper.Names.GEOHASH)) {
GeoHashUtils.decode(parser.text(), point);
}
}
}
}
} else if (token.isValue()) {
if (currentName.equals("unit")) {
unit = DistanceUnit.fromString(parser.text());
} else if (currentName.equals("distance_type") || currentName.equals("distanceType")) {
geoDistance = GeoDistance.fromString(parser.text());
} else if ("value_field".equals(currentName) || "valueField".equals(currentName)) {
valueFieldName = parser.text();
} else if ("value_script".equals(currentName) || "valueScript".equals(currentName)) {
valueScript = parser.text();
} else if ("lang".equals(currentName)) {
scriptLang = parser.text();
} else if ("normalize".equals(currentName)) {
normalizeLat = parser.booleanValue();
normalizeLon = parser.booleanValue();
} else {
// assume the value is the actual value
point.resetFromString(parser.text());
fieldName = currentName;
}
}
}
if (entries.isEmpty()) {
throw new FacetPhaseExecutionException(facetName, "no ranges defined for geo_distance facet");
}
if (normalizeLat || normalizeLon) {
GeoUtils.normalizePoint(point, normalizeLat, normalizeLon);
}
FieldMapper keyFieldMapper = context.smartNameFieldMapper(fieldName);
if (keyFieldMapper == null) {
throw new FacetPhaseExecutionException(facetName, "failed to find mapping for [" + fieldName + "]");
}
IndexGeoPointFieldData keyIndexFieldData = context.fieldData().getForField(keyFieldMapper);
if (valueFieldName != null) {
FieldMapper valueFieldMapper = context.smartNameFieldMapper(valueFieldName);
if (valueFieldMapper == null) {
throw new FacetPhaseExecutionException(facetName, "failed to find mapping for [" + valueFieldName + "]");
}
IndexNumericFieldData valueIndexFieldData = context.fieldData().getForField(valueFieldMapper);
return new ValueGeoDistanceFacetExecutor(keyIndexFieldData, point.lat(), point.lon(), unit, geoDistance, entries.toArray(new GeoDistanceFacet.Entry[entries.size()]),
context, valueIndexFieldData);
}
if (valueScript != null) {
return new ScriptGeoDistanceFacetExecutor(keyIndexFieldData, point.lat(), point.lon(), unit, geoDistance, entries.toArray(new GeoDistanceFacet.Entry[entries.size()]),
context, scriptLang, valueScript, params);
}
return new GeoDistanceFacetExecutor(keyIndexFieldData, point.lat(), point.lon(), unit, geoDistance, entries.toArray(new GeoDistanceFacet.Entry[entries.size()]),
context);
}
}
