132 lines
4.5 KiB
C#
132 lines
4.5 KiB
C#
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Lucene.Net.Documents;
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using Lucene.Net.Spatial;
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using Lucene.Net.Spatial.BBox;
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using Lucene.Net.Spatial.Prefix;
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using Lucene.Net.Spatial.Prefix.Tree;
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using Lucene.Net.Spatial.Vector;
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using NUnit.Framework;
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using Spatial4n.Core.Context;
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using Spatial4n.Core.Shapes;
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namespace Lucene.Net.Contrib.Spatial.Test
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{
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public class DistanceStrategyTest : StrategyTestCase
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{
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public class TestValuesProvider
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{
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public IEnumerable<Param> ParamsProvider()
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{
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var ctorArgs = new List<Param>();
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SpatialContext ctx = SpatialContext.GEO;
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SpatialPrefixTree grid;
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SpatialStrategy strategy;
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grid = new QuadPrefixTree(ctx, 25);
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strategy = new RecursivePrefixTreeStrategy(grid, "recursive_quad");
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ctorArgs.Add(new Param(strategy));
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grid = new GeohashPrefixTree(ctx, 12);
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strategy = new TermQueryPrefixTreeStrategy(grid, "termquery_geohash");
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ctorArgs.Add(new Param(strategy));
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strategy = new PointVectorStrategy(ctx, "pointvector");
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ctorArgs.Add(new Param(strategy));
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strategy = new BBoxStrategy(ctx, "bbox");
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ctorArgs.Add(new Param(strategy));
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return ctorArgs;
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}
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}
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public class Param
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{
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public readonly SpatialStrategy strategy;
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public Param(SpatialStrategy strategy) { this.strategy = strategy; }
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public override String ToString()
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{
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return strategy.GetFieldName();
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}
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}
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// private String fieldName;
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public void Init(Param param)
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{
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SpatialStrategy strategy = param.strategy;
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this.ctx = strategy.GetSpatialContext();
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this.strategy = strategy;
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}
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[Test]
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public void testDistanceOrder([ValueSource(typeof(TestValuesProvider), "ParamsProvider")] Param p)
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{
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Init(p);
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adoc("100", ctx.MakePoint(2, 1));
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adoc("101", ctx.MakePoint(-1, 4));
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adoc("103", (Shape)null);//test score for nothing
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commit();
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//FYI distances are in docid order
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checkDistValueSource("3,4", 2.8274937f, 5.0898066f, 180f);
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checkDistValueSource("4,0", 3.6043684f, 0.9975641f, 180f);
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}
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[Test]
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public void testRecipScore([ValueSource(typeof(TestValuesProvider), "ParamsProvider")] Param p)
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{
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Init(p);
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Point p100 = ctx.MakePoint(2, 1);
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adoc("100", p100);
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Point p101 = ctx.MakePoint(-1, 4);
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adoc("101", p101);
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adoc("103", (Shape)null); //test score for nothing
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commit();
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double dist = ctx.GetDistCalc().Distance(p100, p101);
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Shape queryShape = ctx.MakeCircle(2.01, 0.99, dist);
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checkValueSource(strategy.MakeRecipDistanceValueSource(queryShape),
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new float[] { 1.00f, 0.10f, 0f }, 0.09f);
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}
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protected override Document newDoc(String id, Shape shape)
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{
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//called by adoc(). Make compatible with BBoxStrategy.
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if (shape != null && strategy is BBoxStrategy)
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shape = ctx.MakeRectangle(shape.GetCenter(), shape.GetCenter());
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return base.newDoc(id, shape);
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}
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void checkDistValueSource(String ptStr, params float[] distances)
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{
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Point pt = (Point)ctx.ReadShape(ptStr);
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checkValueSource(strategy.MakeDistanceValueSource(pt), distances, 1.0e-4f);
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}
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}
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}
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