blob: 7b09f84bcdb6351d36e3fd024f86a313cdeec412 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.lucene.document;
import java.io.IOException;
import java.util.Arrays;
import org.apache.lucene.geo.GeoEncodingUtils;
import org.apache.lucene.geo.Polygon;
import org.apache.lucene.geo.Polygon2D;
import org.apache.lucene.index.DocValues;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.SortedNumericDocValues;
import org.apache.lucene.search.ConstantScoreScorer;
import org.apache.lucene.search.ConstantScoreWeight;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.QueryVisitor;
import org.apache.lucene.search.ScoreMode;
import org.apache.lucene.search.Scorer;
import org.apache.lucene.search.TwoPhaseIterator;
import org.apache.lucene.search.Weight;
/** Polygon query for {@link LatLonDocValuesField}. */
public class LatLonDocValuesPointInPolygonQuery extends Query {
private final String field;
private final Polygon[] polygons;
LatLonDocValuesPointInPolygonQuery(String field, Polygon... polygons) {
if (field == null) {
throw new IllegalArgumentException("field must not be null");
}
if (polygons == null) {
throw new IllegalArgumentException("polygons must not be null");
}
if (polygons.length == 0) {
throw new IllegalArgumentException("polygons must not be empty");
}
for (int i = 0; i < polygons.length; i++) {
if (polygons[i] == null) {
throw new IllegalArgumentException("polygon[" + i + "] must not be null");
}
}
this.field = field;
this.polygons = polygons;
}
@Override
public String toString(String field) {
StringBuilder sb = new StringBuilder();
if (!this.field.equals(field)) {
sb.append(this.field);
sb.append(':');
}
sb.append("polygons(").append(Arrays.toString(polygons));
return sb.append(")").toString();
}
@Override
public boolean equals(Object obj) {
if (sameClassAs(obj) == false) {
return false;
}
LatLonDocValuesPointInPolygonQuery other = (LatLonDocValuesPointInPolygonQuery) obj;
return field.equals(other.field) &&
Arrays.equals(polygons, other.polygons);
}
@Override
public int hashCode() {
int h = classHash();
h = 31 * h + field.hashCode();
h = 31 * h + Arrays.hashCode(polygons);
return h;
}
@Override
public void visit(QueryVisitor visitor) {
if (visitor.acceptField(field)) {
visitor.visitLeaf(this);
}
}
@Override
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException {
return new ConstantScoreWeight(this, boost) {
final Polygon2D tree = Polygon2D.create(polygons);
final GeoEncodingUtils.PolygonPredicate polygonPredicate = GeoEncodingUtils.createPolygonPredicate(polygons, tree);
@Override
public Scorer scorer(LeafReaderContext context) throws IOException {
final SortedNumericDocValues values = context.reader().getSortedNumericDocValues(field);
if (values == null) {
return null;
}
final TwoPhaseIterator iterator = new TwoPhaseIterator(values) {
@Override
public boolean matches() throws IOException {
for (int i = 0, count = values.docValueCount(); i < count; ++i) {
final long value = values.nextValue();
final int lat = (int) (value >>> 32);
final int lon = (int) (value & 0xFFFFFFFF);
if (polygonPredicate.test(lat, lon)) {
return true;
}
}
return false;
}
@Override
public float matchCost() {
return 1000f; // TODO: what should it be?
}
};
return new ConstantScoreScorer(this, boost, scoreMode, iterator);
}
@Override
public boolean isCacheable(LeafReaderContext ctx) {
return DocValues.isCacheable(ctx, field);
}
};
}
}