DocumentsWriterThreadState.cs

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/* 
 * 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 System;

namespace Lucene.Net.Index
{
    
    /// <summary>Used by DocumentsWriter to maintain per-thread state.
    /// We keep a separate Posting hash and other state for each
    /// thread and then merge postings hashes from all threads
    /// when writing the segment. 
    /// </summary>
    sealed class DocumentsWriterThreadState
    {
        
        internal bool isIdle = true; // false if this is currently in use by a thread
        internal int numThreads = 1; // Number of threads that share this instance
        internal bool doFlushAfter; // true if we should flush after processing current doc
        internal DocConsumerPerThread consumer;
        internal DocumentsWriter.DocState docState;
        
        internal DocumentsWriter docWriter;
        
        public DocumentsWriterThreadState(DocumentsWriter docWriter)
        {
            this.docWriter = docWriter;
            docState = new DocumentsWriter.DocState();
            docState.maxFieldLength = docWriter.maxFieldLength;
            docState.infoStream = docWriter.infoStream;
            docState.similarity = docWriter.similarity;
            docState.docWriter = docWriter;
            consumer = docWriter.consumer.AddThread(this);
        }
        
        internal void  DoAfterFlush()
        {
            numThreads = 0;
            doFlushAfter = false;
        }
    }
}