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FSTOrdPulsing41PostingsFormat.cs
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FSTOrdPulsing41PostingsFormat.cs
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namespace Lucene.Net.Codecs.Memory
{
/*
* 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 Lucene41PostingsBaseFormat = Lucene41.Lucene41PostingsBaseFormat;
using PulsingPostingsWriter = Pulsing.PulsingPostingsWriter;
using PulsingPostingsReader = Pulsing.PulsingPostingsReader;
using SegmentReadState = Index.SegmentReadState;
using SegmentWriteState = Index.SegmentWriteState;
using IOUtils = Util.IOUtils;
/// <summary>
/// FSTOrd + Pulsing41
/// <para/>
/// @lucene.experimental
/// </summary>
[PostingsFormatName("FSTOrdPulsing41")] // LUCENENET specific - using PostingsFormatName attribute to ensure the default name passed from subclasses is the same as this class name
public class FSTOrdPulsing41PostingsFormat : PostingsFormat
{
private readonly PostingsBaseFormat _wrappedPostingsBaseFormat;
private readonly int _freqCutoff;
public FSTOrdPulsing41PostingsFormat()
: this(1)
{
}
public FSTOrdPulsing41PostingsFormat(int freqCutoff)
: base()
{
_wrappedPostingsBaseFormat = new Lucene41PostingsBaseFormat();
_freqCutoff = freqCutoff;
}
public override FieldsConsumer FieldsConsumer(SegmentWriteState state)
{
PostingsWriterBase docsWriter = null;
PostingsWriterBase pulsingWriter = null;
bool success = false;
try
{
docsWriter = _wrappedPostingsBaseFormat.PostingsWriterBase(state);
pulsingWriter = new PulsingPostingsWriter(state, _freqCutoff, docsWriter);
FieldsConsumer ret = new FSTOrdTermsWriter(state, pulsingWriter);
success = true;
return ret;
}
finally
{
if (!success)
{
IOUtils.DisposeWhileHandlingException(docsWriter, pulsingWriter);
}
}
}
public override FieldsProducer FieldsProducer(SegmentReadState state)
{
PostingsReaderBase docsReader = null;
PostingsReaderBase pulsingReader = null;
bool success = false;
try
{
docsReader = _wrappedPostingsBaseFormat.PostingsReaderBase(state);
pulsingReader = new PulsingPostingsReader(state, docsReader);
FieldsProducer ret = new FSTOrdTermsReader(state, pulsingReader);
success = true;
return ret;
}
finally
{
if (!success)
{
IOUtils.DisposeWhileHandlingException(docsReader, pulsingReader);
}
}
}
}
}