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/*
* 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.index.fielddata.plain;
import org.apache.lucene.spatial.geopoint.document.GeoPointField;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.BytesRefIterator;
import org.apache.lucene.util.CharsRefBuilder;
import org.apache.lucene.util.LegacyNumericUtils;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.AtomicGeoPointFieldData;
import org.elasticsearch.index.fielddata.IndexFieldData.XFieldComparatorSource.Nested;
import org.elasticsearch.index.fielddata.IndexFieldDataCache;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
import org.elasticsearch.search.MultiValueMode;
import java.io.IOException;
abstract class AbstractIndexGeoPointFieldData extends AbstractIndexFieldData implements IndexGeoPointFieldData {
protected abstract static class BaseGeoPointTermsEnum {
protected final BytesRefIterator termsEnum;
protected BaseGeoPointTermsEnum(BytesRefIterator termsEnum) {
this.termsEnum = termsEnum;
}
}
protected static class GeoPointTermsEnum extends BaseGeoPointTermsEnum {
private final GeoPointField.TermEncoding termEncoding;
protected GeoPointTermsEnum(BytesRefIterator termsEnum, GeoPointField.TermEncoding termEncoding) {
super(termsEnum);
this.termEncoding = termEncoding;
}
public Long next() throws IOException {
final BytesRef term = termsEnum.next();
if (term == null) {
return null;
}
if (termEncoding == GeoPointField.TermEncoding.PREFIX) {
return GeoPointField.prefixCodedToGeoCoded(term);
} else if (termEncoding == GeoPointField.TermEncoding.NUMERIC) {
return LegacyNumericUtils.prefixCodedToLong(term);
}
throw new IllegalArgumentException("GeoPoint.TermEncoding should be one of: " + GeoPointField.TermEncoding.PREFIX
+ " or " + GeoPointField.TermEncoding.NUMERIC + " found: " + termEncoding);
}
}
protected static class GeoPointTermsEnumLegacy extends BaseGeoPointTermsEnum {
private final GeoPoint next;
private final CharsRefBuilder spare;
protected GeoPointTermsEnumLegacy(BytesRefIterator termsEnum) {
super(termsEnum);
next = new GeoPoint();
spare = new CharsRefBuilder();
}
public GeoPoint next() throws IOException {
final BytesRef term = termsEnum.next();
if (term == null) {
return null;
}
spare.copyUTF8Bytes(term);
int commaIndex = -1;
for (int i = 0; i < spare.length(); i++) {
if (spare.charAt(i) == ',') { // saves a string creation
commaIndex = i;
break;
}
}
if (commaIndex == -1) {
assert false;
return next.reset(0, 0);
}
final double lat = Double.parseDouble(new String(spare.chars(), 0, commaIndex));
final double lon = Double.parseDouble(new String(spare.chars(), commaIndex + 1, spare.length() - (commaIndex + 1)));
return next.reset(lat, lon);
}
}
public AbstractIndexGeoPointFieldData(IndexSettings indexSettings, String fieldName, IndexFieldDataCache cache) {
super(indexSettings, fieldName, cache);
}
@Override
public final XFieldComparatorSource comparatorSource(@Nullable Object missingValue, MultiValueMode sortMode, Nested nested) {
throw new IllegalArgumentException("can't sort on geo_point field without using specific sorting feature, like geo_distance");
}
@Override
protected AtomicGeoPointFieldData empty(int maxDoc) {
return AbstractAtomicGeoPointFieldData.empty(maxDoc);
}
}