nknize commented on a change in pull request #2155: URL: https://github.com/apache/lucene-solr/pull/2155#discussion_r552871766
########## File path: lucene/core/src/java/org/apache/lucene/document/LatLonPointQuery.java ########## @@ -0,0 +1,174 @@ +/* + * 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 org.apache.lucene.document.ShapeField.QueryRelation; +import org.apache.lucene.geo.Component2D; +import org.apache.lucene.geo.GeoEncodingUtils; +import org.apache.lucene.geo.LatLonGeometry; +import org.apache.lucene.geo.Line; +import org.apache.lucene.index.PointValues.Relation; +import org.apache.lucene.util.NumericUtils; + +import java.util.Arrays; +import java.util.function.Function; +import java.util.function.Predicate; + +import static org.apache.lucene.geo.GeoEncodingUtils.decodeLatitude; +import static org.apache.lucene.geo.GeoEncodingUtils.decodeLongitude; +import static org.apache.lucene.geo.GeoEncodingUtils.encodeLatitude; +import static org.apache.lucene.geo.GeoEncodingUtils.encodeLongitude; + +/** + * Finds all previously indexed geo points that comply the given {@link QueryRelation} with + * the specified array of {@link LatLonGeometry}. + * + * <p>The field must be indexed using one or more {@link LatLonPoint} added per document. + * + **/ +final class LatLonPointQuery extends SpatialQuery { + final private LatLonGeometry[] geometries; + final private Component2D component2D; + + /** + * Creates a query that matches all indexed shapes to the provided array of {@link LatLonGeometry} + */ + LatLonPointQuery(String field, QueryRelation queryRelation, LatLonGeometry... geometries) { + super(field, queryRelation); + if (queryRelation == QueryRelation.WITHIN) { + for (LatLonGeometry geometry : geometries) { + if (geometry instanceof Line) { + // TODO: line queries do not support within relations + throw new IllegalArgumentException("LatLonPointQuery does not support " + QueryRelation.WITHIN + " queries with line geometries"); + } + } + } + this.component2D = LatLonGeometry.create(geometries); + this.geometries = geometries.clone(); + } + + @Override + protected SpatialVisitor getSpatialVisitor() { + if (component2D.getMinY() > component2D.getMaxY()) { + // encodeLatitudeCeil may cause minY to be > maxY iff + // the delta between the longitude < the encoding resolution + return EMPTYVISITOR; + } + final GeoEncodingUtils.Component2DPredicate component2DPredicate = GeoEncodingUtils.createComponentPredicate(component2D); + // bounding box over all geometries, this can speed up tree intersection/cheaply improve approximation for complex multi-geometries + final byte[] minLat = new byte[Integer.BYTES]; + final byte[] maxLat = new byte[Integer.BYTES]; + final byte[] minLon = new byte[Integer.BYTES]; + final byte[] maxLon = new byte[Integer.BYTES]; + NumericUtils.intToSortableBytes(encodeLatitude(component2D.getMinY()), minLat, 0); + NumericUtils.intToSortableBytes(encodeLatitude(component2D.getMaxY()), maxLat, 0); + NumericUtils.intToSortableBytes(encodeLongitude(component2D.getMinX()), minLon, 0); + NumericUtils.intToSortableBytes(encodeLongitude(component2D.getMaxX()), maxLon, 0); + + return new SpatialVisitor() { + @Override + protected Relation relate(byte[] minPackedValue, byte[] maxPackedValue) { + if (Arrays.compareUnsigned(minPackedValue, 0, Integer.BYTES, maxLat, 0, Integer.BYTES) > 0 || + Arrays.compareUnsigned(maxPackedValue, 0, Integer.BYTES, minLat, 0, Integer.BYTES) < 0 || + Arrays.compareUnsigned(minPackedValue, Integer.BYTES, Integer.BYTES + Integer.BYTES, maxLon, 0, Integer.BYTES) > 0 || + Arrays.compareUnsigned(maxPackedValue, Integer.BYTES, Integer.BYTES + Integer.BYTES, minLon, 0, Integer.BYTES) < 0) { + // outside of global bounding box range + return Relation.CELL_OUTSIDE_QUERY; + } + + double cellMinLat = decodeLatitude(minPackedValue, 0); + double cellMinLon = decodeLongitude(minPackedValue, Integer.BYTES); + double cellMaxLat = decodeLatitude(maxPackedValue, 0); + double cellMaxLon = decodeLongitude(maxPackedValue, Integer.BYTES); + + return component2D.relate(cellMinLon, cellMaxLon, cellMinLat, cellMaxLat); + } + + @Override + protected Predicate<byte[]> intersects() { + return packedValue -> component2DPredicate.test(NumericUtils.sortableBytesToInt(packedValue, 0), + NumericUtils.sortableBytesToInt(packedValue, Integer.BYTES)); + } + + @Override + protected Predicate<byte[]> within() { + return packedValue -> component2DPredicate.test(NumericUtils.sortableBytesToInt(packedValue, 0), + NumericUtils.sortableBytesToInt(packedValue, Integer.BYTES)); + } + + @Override + protected Function<byte[], Component2D.WithinRelation> contains() { + return packedValue -> component2D.withinPoint( Review comment: This looks good! 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