| /* |
| * 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); |
| } |
| |
| }; |
| } |
| } |