/**
 * 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.
 */

using NUnit.Framework;

using WhitespaceAnalyzer = Lucene.Net.Analysis.WhitespaceAnalyzer;
using Document = Lucene.Net.Documents.Document;
using Field = Lucene.Net.Documents.Field;
using IndexReader = Lucene.Net.Index.IndexReader;
using IndexWriter = Lucene.Net.Index.IndexWriter;
using Term = Lucene.Net.Index.Term;
using RAMDirectory = Lucene.Net.Store.RAMDirectory;
using OpenBitSet = Lucene.Net.Util.OpenBitSet;

namespace Lucene.Net.Search
{
    /**
     *
     */
    [TestFixture]
    public class TestFilteredSearch
    {
        private const string FIELD = "category";

        [Test]
        public void TestFilteredSearch_Renamed()
        {
            RAMDirectory directory = new RAMDirectory();
            int[] filterBits = { 1, 36 };
            Filter filter = new SimpleDocIdSetFilter(filterBits);

            try
            {
                IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
                for (int i = 0; i < 60; i++)
                {//Simple docs
                    Document doc = new Document();
                    doc.Add(new Field(FIELD, "" + i, Field.Store.YES, Field.Index.NOT_ANALYZED));
                    writer.AddDocument(doc);
                }
                writer.Close();

                BooleanQuery booleanQuery = new BooleanQuery();
                booleanQuery.Add(new TermQuery(new Term(FIELD, "36")), BooleanClause.Occur.SHOULD);


                IndexSearcher indexSearcher = new IndexSearcher(directory);
                ScoreDoc[] hits = indexSearcher.Search(booleanQuery, filter, 1000).scoreDocs;
                Assert.AreEqual(1, hits.Length, "Number of matched documents");
            }
            catch (System.IO.IOException e)
            {
                Assert.Fail(e.Message);
            }
        }

        public class SimpleDocIdSetFilter : Filter
        {
            private OpenBitSet bits;

            public SimpleDocIdSetFilter(int[] docs)
            {
                bits = new OpenBitSet();
                for (int i = 0; i < docs.Length; i++)
                {
                    bits.Set(docs[i]);
                }
            }

            public override DocIdSet GetDocIdSet(IndexReader reader)
            {
                return bits;
            }

            [System.Obsolete()]
            public override System.Collections.BitArray Bits(IndexReader reader)
            {
                return null;
            }
        }
    }
}