| using Lucene.Net.Codecs.Compressing.Dummy; |
| using Lucene.Net.Codecs.Lucene46; |
| using Lucene.Net.Randomized.Generators; |
| using System; |
| |
| namespace Lucene.Net.Codecs.Compressing |
| { |
| /* |
| * 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 codec that uses <see cref="CompressingStoredFieldsFormat"/> for its stored |
| /// fields and delegates to <see cref="Lucene46Codec"/> for everything else. |
| /// </summary> |
| public abstract class CompressingCodec : FilterCodec |
| { |
| /// <summary> |
| /// Create a random instance. |
| /// </summary> |
| public static CompressingCodec RandomInstance(Random random, int chunkSize, bool withSegmentSuffix) |
| { |
| switch (random.Next(4)) |
| { |
| case 0: |
| return new FastCompressingCodec(chunkSize, withSegmentSuffix); |
| |
| case 1: |
| return new FastDecompressionCompressingCodec(chunkSize, withSegmentSuffix); |
| |
| case 2: |
| return new HighCompressionCompressingCodec(chunkSize, withSegmentSuffix); |
| |
| case 3: |
| return new DummyCompressingCodec(chunkSize, withSegmentSuffix); |
| |
| default: |
| throw new InvalidOperationException(); |
| } |
| } |
| |
| /// <summary> |
| /// Creates a random <see cref="CompressingCodec"/> that is using an empty segment |
| /// suffix. |
| /// </summary> |
| public static CompressingCodec RandomInstance(Random random) |
| { |
| return RandomInstance(random, RandomInts.RandomInt32Between(random, 1, 500), false); |
| } |
| |
| /// <summary> |
| /// Creates a random <see cref="CompressingCodec"/> that is using a segment suffix. |
| /// </summary> |
| public static CompressingCodec RandomInstance(Random random, bool withSegmentSuffix) |
| { |
| return RandomInstance(random, RandomInts.RandomInt32Between(random, 1, 500), withSegmentSuffix); |
| } |
| |
| private readonly CompressingStoredFieldsFormat storedFieldsFormat; |
| private readonly CompressingTermVectorsFormat termVectorsFormat; |
| |
| /// <summary> |
| /// Creates a compressing codec with a given <paramref name="segmentSuffix"/>. |
| /// </summary> |
| public CompressingCodec(string segmentSuffix, CompressionMode compressionMode, int chunkSize) |
| : base(new Lucene46Codec()) |
| { |
| this.storedFieldsFormat = new CompressingStoredFieldsFormat(this.Name, segmentSuffix, compressionMode, chunkSize); |
| this.termVectorsFormat = new CompressingTermVectorsFormat(this.Name, segmentSuffix, compressionMode, chunkSize); |
| } |
| |
| /// <summary> |
| /// Creates a compressing codec with an empty segment suffix. |
| /// </summary> |
| public CompressingCodec(CompressionMode compressionMode, int chunkSize) |
| : this("", compressionMode, chunkSize) |
| { } |
| |
| public override StoredFieldsFormat StoredFieldsFormat => storedFieldsFormat; |
| |
| public override TermVectorsFormat TermVectorsFormat => termVectorsFormat; |
| |
| public override string ToString() |
| { |
| return Name + "(storedFieldsFormat=" + storedFieldsFormat + ", termVectorsFormat=" + termVectorsFormat + ")"; |
| } |
| } |
| } |