src/Lucene.Net.Tests.Spatial/Prefix/TestTermQueryPrefixGridStrategy.cs

using Lucene.Net.Documents;
using Lucene.Net.Index;
using Lucene.Net.Spatial.Prefix.Tree;
using Lucene.Net.Spatial.Queries;
using NUnit.Framework;
using Spatial4n.Core.Context;

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.
     */

    public class TestTermQueryPrefixGridStrategy : SpatialTestCase
    {
        [Test]
        public virtual void TestNGramPrefixGridLosAngeles()
        {
            SpatialContext ctx = SpatialContext.GEO;
            TermQueryPrefixTreeStrategy prefixGridStrategy = new TermQueryPrefixTreeStrategy(new QuadPrefixTree(ctx), "geo");

            Spatial4n.Core.Shapes.IShape point = ctx.MakePoint(-118.243680, 34.052230);

            Document losAngeles = new Document();
            losAngeles.Add(new StringField("name", "Los Angeles", Field.Store.YES));
            foreach (IIndexableField field in prefixGridStrategy.CreateIndexableFields(point))
            {
                losAngeles.Add(field);
            }
            losAngeles.Add(new StoredField(prefixGridStrategy.FieldName, point.toString()));//just for diagnostics

            addDocumentsAndCommit(new Document[] { losAngeles });

            // This won't work with simple spatial context...
            SpatialArgsParser spatialArgsParser = new SpatialArgsParser();
            // TODO... use a non polygon query
            //    SpatialArgs spatialArgs = spatialArgsParser.parse(
            //        "Intersects(POLYGON((-127.00390625 39.8125,-112.765625 39.98828125,-111.53515625 31.375,-125.94921875 30.14453125,-127.00390625 39.8125)))",
            //        new SimpleSpatialContext());

            //    Query query = prefixGridStrategy.makeQuery(spatialArgs, fieldInfo);
            //    SearchResults searchResults = executeQuery(query, 1);
            //    assertEquals(1, searchResults.numFound);
        }
    }
}