| using System; |
| |
| namespace Lucene.Net.Index |
| { |
| /* |
| * 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> |
| /// <p>Expert: <seealso cref="IndexWriter"/> uses an instance |
| /// implementing this interface to execute the merges |
| /// selected by a <seealso cref="MergePolicy"/>. The default |
| /// MergeScheduler is <seealso cref="ConcurrentMergeScheduler"/>.</p> |
| /// <p>Implementers of sub-classes should make sure that <seealso cref="#clone()"/> |
| /// returns an independent instance able to work with any <seealso cref="IndexWriter"/> |
| /// instance.</p> |
| /// @lucene.experimental |
| /// </summary> |
| public abstract class MergeScheduler : IDisposable, IMergeScheduler |
| { |
| /// <summary> |
| /// Sole constructor. (For invocation by subclass |
| /// constructors, typically implicit.) |
| /// </summary> |
| protected internal MergeScheduler() |
| { |
| } |
| |
| /// <summary> |
| /// Run the merges provided by <seealso cref="IndexWriter#getNextMerge()"/>. </summary> |
| /// <param name="writer"> the <seealso cref="IndexWriter"/> to obtain the merges from. </param> |
| /// <param name="trigger"> the <seealso cref="MergeTrigger"/> that caused this merge to happen </param> |
| /// <param name="newMergesFound"> <code>true</code> iff any new merges were found by the caller otherwise <code>false</code> |
| /// </param> |
| public abstract void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound); |
| |
| /// <summary> |
| /// Close this MergeScheduler. </summary> |
| public abstract void Dispose(); |
| |
| public virtual IMergeScheduler Clone() |
| { |
| return (MergeScheduler)base.MemberwiseClone(); |
| } |
| } |
| } |