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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;
using Lucene.Net.Analysis.Tokenattributes;
using Lucene.Net.Util;
using TokenStream = Lucene.Net.Analysis.TokenStream;
namespace Lucene.Net.Index
{
/// <summary>This is a DocFieldConsumer that inverts each field,
/// separately, from a Document, and accepts a
/// InvertedTermsConsumer to process those terms.
/// </summary>
sealed class DocInverterPerThread : DocFieldConsumerPerThread
{
private void InitBlock()
{
singleToken = new SingleTokenAttributeSource();
}
internal DocInverter docInverter;
internal InvertedDocConsumerPerThread consumer;
internal InvertedDocEndConsumerPerThread endConsumer;
internal SingleTokenAttributeSource singleToken;
internal class SingleTokenAttributeSource : AttributeSource
{
internal ITermAttribute termAttribute;
internal IOffsetAttribute offsetAttribute;
internal SingleTokenAttributeSource()
{
termAttribute = AddAttribute<ITermAttribute>();
offsetAttribute = AddAttribute<IOffsetAttribute>();
}
public void Reinit(System.String stringValue, int startOffset, int endOffset)
{
termAttribute.SetTermBuffer(stringValue);
offsetAttribute.SetOffset(startOffset, endOffset);
}
}
internal DocumentsWriter.DocState docState;
internal FieldInvertState fieldState = new FieldInvertState();
// Used to read a string value for a field
internal ReusableStringReader stringReader = new ReusableStringReader();
public DocInverterPerThread(DocFieldProcessorPerThread docFieldProcessorPerThread, DocInverter docInverter)
{
InitBlock();
this.docInverter = docInverter;
docState = docFieldProcessorPerThread.docState;
consumer = docInverter.consumer.AddThread(this);
endConsumer = docInverter.endConsumer.AddThread(this);
}
public override void StartDocument()
{
consumer.StartDocument();
endConsumer.StartDocument();
}
public override DocumentsWriter.DocWriter FinishDocument()
{
// TODO: allow endConsumer.finishDocument to also return
// a DocWriter
endConsumer.FinishDocument();
return consumer.FinishDocument();
}
public override void Abort()
{
try
{
consumer.Abort();
}
finally
{
endConsumer.Abort();
}
}
public override DocFieldConsumerPerField AddField(FieldInfo fi)
{
return new DocInverterPerField(this, fi);
}
}
}
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