| using Lucene.Net.Index; |
| using Lucene.Net.Search; |
| using Lucene.Net.Spatial.Prefix.Tree; |
| using Lucene.Net.Util; |
| using Spatial4n.Core.Shapes; |
| using System.IO; |
| |
| namespace Lucene.Net.Spatial.Prefix |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// A Filter matching documents that have an <see cref="SpatialRelation.INTERSECTS"/> |
| /// (i.e. not DISTINCT) relationship with a provided query shape. |
| /// |
| /// @lucene.internal |
| /// </summary> |
| public class IntersectsPrefixTreeFilter : AbstractVisitingPrefixTreeFilter |
| { |
| private readonly bool hasIndexedLeaves; |
| |
| public IntersectsPrefixTreeFilter(IShape queryShape, string fieldName, |
| SpatialPrefixTree grid, int detailLevel, |
| int prefixGridScanLevel, bool hasIndexedLeaves) |
| : base(queryShape, fieldName, grid, detailLevel, prefixGridScanLevel) |
| { |
| this.hasIndexedLeaves = hasIndexedLeaves; |
| } |
| |
| public override bool Equals(object o) |
| { |
| return base.Equals(o) && hasIndexedLeaves == ((IntersectsPrefixTreeFilter)o).hasIndexedLeaves; |
| } |
| |
| /// <summary> |
| /// LUCENENET specific: need to override GetHashCode to |
| /// prevent a compiler warning and realistically, the hash code |
| /// should work similarly to Equals. |
| /// </summary> |
| public override int GetHashCode() |
| { |
| int h = base.GetHashCode(); |
| h ^= hasIndexedLeaves.GetHashCode(); // reversible |
| return h; |
| } |
| |
| /// <exception cref="IOException"></exception> |
| public override DocIdSet GetDocIdSet(AtomicReaderContext context, IBits acceptDocs) |
| { |
| return new VisitorTemplateAnonymousClass(this, context, acceptDocs, hasIndexedLeaves).GetDocIdSet(); |
| } |
| |
| #region Nested type: VisitorTemplateAnonymousClass |
| |
| private sealed class VisitorTemplateAnonymousClass : VisitorTemplate |
| { |
| private FixedBitSet results; |
| |
| public VisitorTemplateAnonymousClass(IntersectsPrefixTreeFilter outerInstance, AtomicReaderContext context, IBits acceptDocs, bool hasIndexedLeaves) |
| : base(outerInstance, context, acceptDocs, hasIndexedLeaves) |
| { |
| } |
| |
| protected internal override void Start() |
| { |
| results = new FixedBitSet(m_maxDoc); |
| } |
| |
| protected internal override DocIdSet Finish() |
| { |
| return results; |
| } |
| |
| protected internal override bool Visit(Cell cell) |
| { |
| if (cell.ShapeRel == SpatialRelation.WITHIN || cell.Level == m_outerInstance.m_detailLevel) |
| { |
| CollectDocs(results); |
| return false; |
| } |
| return true; |
| } |
| |
| protected internal override void VisitLeaf(Cell cell) |
| { |
| CollectDocs(results); |
| } |
| |
| protected internal override void VisitScanned(Cell cell) |
| { |
| if (m_outerInstance.m_queryShape.Relate(cell.Shape).Intersects()) |
| { |
| CollectDocs(results); |
| } |
| } |
| } |
| |
| #endregion |
| } |
| } |