package org.apache.maven.index.context;
   
   /*
    * 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.
   */
  
  import java.io.IOException;
  
  import org.apache.lucene.analysis.Analyzer;
  import org.apache.lucene.index.CorruptIndexException;
  import org.apache.lucene.index.IndexWriter;
  import org.apache.lucene.index.IndexWriterConfig;
  import org.apache.lucene.index.SerialMergeScheduler;
  import org.apache.lucene.store.Directory;
  import org.apache.lucene.store.LockObtainFailedException;
  
  /**
   * An extension of <a
   * href="http://lucene.apache.org/java/2_4_0/api/core/org/apache/lucene/index/IndexWriter.html">Lucene IndexWriter</a>
   * to allow to track if writer is closed
   */
  public class NexusIndexWriter
      extends IndexWriter
  {
      public interface IndexWriterConfigFactory
      {
          IndexWriterConfig create( Analyzer analyzer );
      }
  
      @Deprecated
      public NexusIndexWriter( final Directory directory, final Analyzer analyzer, boolean create )
          throws CorruptIndexException, LockObtainFailedException, IOException
      {
          this( directory, new IndexWriterConfig( analyzer ) );
      }
  
      public NexusIndexWriter( final Directory directory, final IndexWriterConfig config )
          throws CorruptIndexException, LockObtainFailedException, IOException
      {
          super( directory, config );
      }
  
      // ==
  
      public static IndexWriterConfig defaultConfig()
      {
          final IndexWriterConfig config = new IndexWriterConfig( new NexusAnalyzer() );
          // default open mode is CreateOrAppend which suits us
          config.setRAMBufferSizeMB( 2.0 ); // old default
          config.setMergeScheduler( new SerialMergeScheduler() ); // merging serially
          config.setWriteLockTimeout( IndexWriterConfig.WRITE_LOCK_TIMEOUT );
          return config;
      }
  }