src/Lucene.Net.Tests/Index/TestDocumentWriter.cs - lucenenet - Git at Google

 using Lucene.Net.Analysis;
 using Lucene.Net.Analysis.TokenAttributes;
 using Lucene.Net.Documents;
 using NUnit.Framework;
 using System;
 using System.IO;
 using Assert = Lucene.Net.TestFramework.Assert;

 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.
      */


     using AttributeSource = Lucene.Net.Util.AttributeSource;
     using BytesRef = Lucene.Net.Util.BytesRef;
     using Directory = Lucene.Net.Store.Directory;
     using DocIdSetIterator = Lucene.Net.Search.DocIdSetIterator;
     using Document = Documents.Document;
     using Field = Field;
     using FieldType = FieldType;
     using LuceneTestCase = Lucene.Net.Util.LuceneTestCase;
     using StringField = StringField;
     using TestUtil = Lucene.Net.Util.TestUtil;
     using TextField = TextField;

     [TestFixture]
     public class TestDocumentWriter : LuceneTestCase
     {
         private Directory dir;

         [SetUp]
         public override void SetUp()
         {
             base.SetUp();
             dir = NewDirectory();
         }

         [TearDown]
         public override void TearDown()
         {
             dir.Dispose();
             base.TearDown();
         }

         [Test]
         public virtual void Test()
         {
             Assert.IsTrue(dir != null);
         }

         [Test]
         public virtual void TestAddDocument()
         {
             Document testDoc = new Document();
             DocHelper.SetupDoc(testDoc);
             IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
             writer.AddDocument(testDoc);
             writer.Commit();
             SegmentCommitInfo info = writer.NewestSegment();
             writer.Dispose();
             //After adding the document, we should be able to read it back in
             SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));
             Assert.IsTrue(reader != null);
             Document doc = reader.Document(0);
             Assert.IsTrue(doc != null);

             //System.out.println("Document: " + doc);
             IIndexableField[] fields = doc.GetFields("textField2");
             Assert.IsTrue(fields != null && fields.Length == 1);
             Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.FIELD_2_TEXT, StringComparison.Ordinal));
             Assert.IsTrue(fields[0].IndexableFieldType.StoreTermVectors);

             fields = doc.GetFields("textField1");
             Assert.IsTrue(fields != null && fields.Length == 1);
             Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.FIELD_1_TEXT, StringComparison.Ordinal));
             Assert.IsFalse(fields[0].IndexableFieldType.StoreTermVectors);

             fields = doc.GetFields("keyField");
             Assert.IsTrue(fields != null && fields.Length == 1);
             Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.KEYWORD_TEXT, StringComparison.Ordinal));

             fields = doc.GetFields(DocHelper.NO_NORMS_KEY);
             Assert.IsTrue(fields != null && fields.Length == 1);
             Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.NO_NORMS_TEXT, StringComparison.Ordinal));

             fields = doc.GetFields(DocHelper.TEXT_FIELD_3_KEY);
             Assert.IsTrue(fields != null && fields.Length == 1);
             Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.FIELD_3_TEXT, StringComparison.Ordinal));

             // test that the norms are not present in the segment if
             // omitNorms is true
             foreach (FieldInfo fi in reader.FieldInfos)
             {
                 if (fi.IsIndexed)
                 {
                     Assert.IsTrue(fi.OmitsNorms == (reader.GetNormValues(fi.Name) == null));
                 }
             }
             reader.Dispose();
         }

         [Test]
         public virtual void TestPositionIncrementGap()
         {
             Analyzer analyzer = new AnalyzerAnonymousClass();

             IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));

             Document doc = new Document();
             doc.Add(NewTextField("repeated", "repeated one", Field.Store.YES));
             doc.Add(NewTextField("repeated", "repeated two", Field.Store.YES));

             writer.AddDocument(doc);
             writer.Commit();
             SegmentCommitInfo info = writer.NewestSegment();
             writer.Dispose();
             SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));

             DocsAndPositionsEnum termPositions = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), "repeated", new BytesRef("repeated"));
             Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
             int freq = termPositions.Freq;
             Assert.AreEqual(2, freq);
             Assert.AreEqual(0, termPositions.NextPosition());
             Assert.AreEqual(502, termPositions.NextPosition());
             reader.Dispose();
         }

         private class AnalyzerAnonymousClass : Analyzer
         {
             protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
             {
                 return new TokenStreamComponents(new MockTokenizer(reader, MockTokenizer.WHITESPACE, false));
             }

             public override int GetPositionIncrementGap(string fieldName)
             {
                 return 500;
             }
         }

         [Test]
         public virtual void TestTokenReuse()
         {
             Analyzer analyzer = new AnalyzerAnonymousClass2(this);

             IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));

             Document doc = new Document();
             doc.Add(NewTextField("f1", "a 5 a a", Field.Store.YES));

             writer.AddDocument(doc);
             writer.Commit();
             SegmentCommitInfo info = writer.NewestSegment();
             writer.Dispose();
             SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));

             DocsAndPositionsEnum termPositions = MultiFields.GetTermPositionsEnum(reader, reader.LiveDocs, "f1", new BytesRef("a"));
             Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
             int freq = termPositions.Freq;
             Assert.AreEqual(3, freq);
             Assert.AreEqual(0, termPositions.NextPosition());
             Assert.IsNotNull(termPositions.GetPayload());
             Assert.AreEqual(6, termPositions.NextPosition());
             Assert.IsNull(termPositions.GetPayload());
             Assert.AreEqual(7, termPositions.NextPosition());
             Assert.IsNull(termPositions.GetPayload());
             reader.Dispose();
         }

         private class AnalyzerAnonymousClass2 : Analyzer
         {
             private readonly TestDocumentWriter outerInstance;

             public AnalyzerAnonymousClass2(TestDocumentWriter outerInstance)
             {
                 this.outerInstance = outerInstance;
             }

             protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
             {
                 Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
                 return new TokenStreamComponents(tokenizer, new TokenFilterAnonymousClass(this, tokenizer));
             }

             private class TokenFilterAnonymousClass : TokenFilter
             {
                 private readonly AnalyzerAnonymousClass2 outerInstance;

                 public TokenFilterAnonymousClass(AnalyzerAnonymousClass2 outerInstance, Tokenizer tokenizer)
                     : base(tokenizer)
                 {
                     this.outerInstance = outerInstance;
                     first = true;
                     termAtt = AddAttribute<ICharTermAttribute>();
                     payloadAtt = AddAttribute<IPayloadAttribute>();
                     posIncrAtt = AddAttribute<IPositionIncrementAttribute>();
                 }

                 internal bool first;
                 internal AttributeSource.State state;

                 public sealed override bool IncrementToken()
                 {
                     if (state != null)
                     {
                         RestoreState(state);
                         payloadAtt.Payload = null;
                         posIncrAtt.PositionIncrement = 0;
                         termAtt.SetEmpty().Append("b");
                         state = null;
                         return true;
                     }

                     bool hasNext = m_input.IncrementToken();
                     if (!hasNext)
                     {
                         return false;
                     }
                     if (char.IsDigit(termAtt.Buffer[0]))
                     {
                         posIncrAtt.PositionIncrement = termAtt.Buffer[0] - '0';
                     }
                     if (first)
                     {
                         // set payload on first position only
                         payloadAtt.Payload = new BytesRef(new byte[] { 100 });
                         first = false;
                     }

                     // index a "synonym" for every token
                     state = CaptureState();
                     return true;
                 }

                 public sealed override void Reset()
                 {
                     base.Reset();
                     first = true;
                     state = null;
                 }

                 internal readonly ICharTermAttribute termAtt;
                 internal readonly IPayloadAttribute payloadAtt;
                 internal readonly IPositionIncrementAttribute posIncrAtt;
             }
         }

         [Test]
         public virtual void TestPreAnalyzedField()
         {
             IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
             Document doc = new Document();

             doc.Add(new TextField("preanalyzed", new TokenStreamAnonymousClass(this)));

             writer.AddDocument(doc);
             writer.Commit();
             SegmentCommitInfo info = writer.NewestSegment();
             writer.Dispose();
             SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));

             DocsAndPositionsEnum termPositions = reader.GetTermPositionsEnum(new Term("preanalyzed", "term1"));
             Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
             Assert.AreEqual(1, termPositions.Freq);
             Assert.AreEqual(0, termPositions.NextPosition());

             termPositions = reader.GetTermPositionsEnum(new Term("preanalyzed", "term2"));
             Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
             Assert.AreEqual(2, termPositions.Freq);
             Assert.AreEqual(1, termPositions.NextPosition());
             Assert.AreEqual(3, termPositions.NextPosition());

             termPositions = reader.GetTermPositionsEnum(new Term("preanalyzed", "term3"));
             Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
             Assert.AreEqual(1, termPositions.Freq);
             Assert.AreEqual(2, termPositions.NextPosition());
             reader.Dispose();
         }

         private class TokenStreamAnonymousClass : TokenStream
         {
             private readonly TestDocumentWriter outerInstance;

             public TokenStreamAnonymousClass(TestDocumentWriter outerInstance)
             {
                 this.outerInstance = outerInstance;
                 tokens = new string[] { "term1", "term2", "term3", "term2" };
                 index = 0;
                 termAtt = AddAttribute<ICharTermAttribute>();
             }

             private string[] tokens;
             private int index;

             private ICharTermAttribute termAtt;

             public sealed override bool IncrementToken()
             {
                 if (index == tokens.Length)
                 {
                     return false;
                 }
                 else
                 {
                     ClearAttributes();
                     termAtt.SetEmpty().Append(tokens[index++]);
                     return true;
                 }
             }
         }

         /// <summary>
         /// Test adding two fields with the same name, but
         /// with different term vector setting (LUCENE-766).
         /// </summary>
         [Test]
         public virtual void TestMixedTermVectorSettingsSameField()
         {
             Document doc = new Document();
             // f1 first without tv then with tv
             doc.Add(NewStringField("f1", "v1", Field.Store.YES));
             FieldType customType2 = new FieldType(StringField.TYPE_STORED);
             customType2.StoreTermVectors = true;
             customType2.StoreTermVectorOffsets = true;
             customType2.StoreTermVectorPositions = true;
             doc.Add(NewField("f1", "v2", customType2));
             // f2 first with tv then without tv
             doc.Add(NewField("f2", "v1", customType2));
             doc.Add(NewStringField("f2", "v2", Field.Store.YES));

             IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
             writer.AddDocument(doc);
             writer.Dispose();

             TestUtil.CheckIndex(dir);

             IndexReader reader = DirectoryReader.Open(dir);
             // f1
             Terms tfv1 = reader.GetTermVectors(0).GetTerms("f1");
             Assert.IsNotNull(tfv1);
             Assert.AreEqual(2, tfv1.Count, "the 'with_tv' setting should rule!");
             // f2
             Terms tfv2 = reader.GetTermVectors(0).GetTerms("f2");
             Assert.IsNotNull(tfv2);
             Assert.AreEqual(2, tfv2.Count, "the 'with_tv' setting should rule!");
             reader.Dispose();
         }

         /// <summary>
         /// Test adding two fields with the same name, one indexed
         /// the other stored only. The omitNorms and omitTermFreqAndPositions setting
         /// of the stored field should not affect the indexed one (LUCENE-1590)
         /// </summary>
         [Test]
         public virtual void TestLUCENE_1590()
         {
             Document doc = new Document();
             // f1 has no norms
             FieldType customType = new FieldType(TextField.TYPE_NOT_STORED);
             customType.OmitNorms = true;
             FieldType customType2 = new FieldType();
             customType2.IsStored = true;
             doc.Add(NewField("f1", "v1", customType));
             doc.Add(NewField("f1", "v2", customType2));
             // f2 has no TF
             FieldType customType3 = new FieldType(TextField.TYPE_NOT_STORED);
             customType3.IndexOptions = IndexOptions.DOCS_ONLY;
             Field f = NewField("f2", "v1", customType3);
             doc.Add(f);
             doc.Add(NewField("f2", "v2", customType2));

             IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
             writer.AddDocument(doc);
             writer.ForceMerge(1); // be sure to have a single segment
             writer.Dispose();

             TestUtil.CheckIndex(dir);

             SegmentReader reader = GetOnlySegmentReader(DirectoryReader.Open(dir));
             FieldInfos fi = reader.FieldInfos;
             // f1
             Assert.IsFalse(fi.FieldInfo("f1").HasNorms, "f1 should have no norms");
             Assert.AreEqual(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS, fi.FieldInfo("f1").IndexOptions, "omitTermFreqAndPositions field bit should not be set for f1");
             // f2
             Assert.IsTrue(fi.FieldInfo("f2").HasNorms, "f2 should have norms");
             Assert.AreEqual(IndexOptions.DOCS_ONLY, fi.FieldInfo("f2").IndexOptions, "omitTermFreqAndPositions field bit should be set for f2");
             reader.Dispose();
         }
     }
 }
	using Lucene.Net.Analysis;
	using Lucene.Net.Analysis.TokenAttributes;
	using Lucene.Net.Documents;
	using NUnit.Framework;
	using System;
	using System.IO;
	using Assert = Lucene.Net.TestFramework.Assert;

	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.
	*/


	using AttributeSource = Lucene.Net.Util.AttributeSource;
	using BytesRef = Lucene.Net.Util.BytesRef;
	using Directory = Lucene.Net.Store.Directory;
	using DocIdSetIterator = Lucene.Net.Search.DocIdSetIterator;
	using Document = Documents.Document;
	using Field = Field;
	using FieldType = FieldType;
	using LuceneTestCase = Lucene.Net.Util.LuceneTestCase;
	using StringField = StringField;
	using TestUtil = Lucene.Net.Util.TestUtil;
	using TextField = TextField;

	[TestFixture]
	public class TestDocumentWriter : LuceneTestCase
	{
	private Directory dir;

	[SetUp]
	public override void SetUp()
	{
	base.SetUp();
	dir = NewDirectory();
	}

	[TearDown]
	public override void TearDown()
	{
	dir.Dispose();
	base.TearDown();
	}

	[Test]
	public virtual void Test()
	{
	Assert.IsTrue(dir != null);
	}

	[Test]
	public virtual void TestAddDocument()
	{
	Document testDoc = new Document();
	DocHelper.SetupDoc(testDoc);
	IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
	writer.AddDocument(testDoc);
	writer.Commit();
	SegmentCommitInfo info = writer.NewestSegment();
	writer.Dispose();
	//After adding the document, we should be able to read it back in
	SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));
	Assert.IsTrue(reader != null);
	Document doc = reader.Document(0);
	Assert.IsTrue(doc != null);

	//System.out.println("Document: " + doc);
	IIndexableField[] fields = doc.GetFields("textField2");
	Assert.IsTrue(fields != null && fields.Length == 1);
	Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.FIELD_2_TEXT, StringComparison.Ordinal));
	Assert.IsTrue(fields[0].IndexableFieldType.StoreTermVectors);

	fields = doc.GetFields("textField1");
	Assert.IsTrue(fields != null && fields.Length == 1);
	Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.FIELD_1_TEXT, StringComparison.Ordinal));
	Assert.IsFalse(fields[0].IndexableFieldType.StoreTermVectors);

	fields = doc.GetFields("keyField");
	Assert.IsTrue(fields != null && fields.Length == 1);
	Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.KEYWORD_TEXT, StringComparison.Ordinal));

	fields = doc.GetFields(DocHelper.NO_NORMS_KEY);
	Assert.IsTrue(fields != null && fields.Length == 1);
	Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.NO_NORMS_TEXT, StringComparison.Ordinal));

	fields = doc.GetFields(DocHelper.TEXT_FIELD_3_KEY);
	Assert.IsTrue(fields != null && fields.Length == 1);
	Assert.IsTrue(fields[0].GetStringValue().Equals(DocHelper.FIELD_3_TEXT, StringComparison.Ordinal));

	// test that the norms are not present in the segment if
	// omitNorms is true
	foreach (FieldInfo fi in reader.FieldInfos)
	{
	if (fi.IsIndexed)
	{
	Assert.IsTrue(fi.OmitsNorms == (reader.GetNormValues(fi.Name) == null));
	}
	}
	reader.Dispose();
	}

	[Test]
	public virtual void TestPositionIncrementGap()
	{
	Analyzer analyzer = new AnalyzerAnonymousClass();

	IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));

	Document doc = new Document();
	doc.Add(NewTextField("repeated", "repeated one", Field.Store.YES));
	doc.Add(NewTextField("repeated", "repeated two", Field.Store.YES));

	writer.AddDocument(doc);
	writer.Commit();
	SegmentCommitInfo info = writer.NewestSegment();
	writer.Dispose();
	SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));

	DocsAndPositionsEnum termPositions = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), "repeated", new BytesRef("repeated"));
	Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
	int freq = termPositions.Freq;
	Assert.AreEqual(2, freq);
	Assert.AreEqual(0, termPositions.NextPosition());
	Assert.AreEqual(502, termPositions.NextPosition());
	reader.Dispose();
	}

	private class AnalyzerAnonymousClass : Analyzer
	{
	protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
	{
	return new TokenStreamComponents(new MockTokenizer(reader, MockTokenizer.WHITESPACE, false));
	}

	public override int GetPositionIncrementGap(string fieldName)
	{
	return 500;
	}
	}

	[Test]
	public virtual void TestTokenReuse()
	{
	Analyzer analyzer = new AnalyzerAnonymousClass2(this);

	IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));

	Document doc = new Document();
	doc.Add(NewTextField("f1", "a 5 a a", Field.Store.YES));

	writer.AddDocument(doc);
	writer.Commit();
	SegmentCommitInfo info = writer.NewestSegment();
	writer.Dispose();
	SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));

	DocsAndPositionsEnum termPositions = MultiFields.GetTermPositionsEnum(reader, reader.LiveDocs, "f1", new BytesRef("a"));
	Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
	int freq = termPositions.Freq;
	Assert.AreEqual(3, freq);
	Assert.AreEqual(0, termPositions.NextPosition());
	Assert.IsNotNull(termPositions.GetPayload());
	Assert.AreEqual(6, termPositions.NextPosition());
	Assert.IsNull(termPositions.GetPayload());
	Assert.AreEqual(7, termPositions.NextPosition());
	Assert.IsNull(termPositions.GetPayload());
	reader.Dispose();
	}

	private class AnalyzerAnonymousClass2 : Analyzer
	{
	private readonly TestDocumentWriter outerInstance;

	public AnalyzerAnonymousClass2(TestDocumentWriter outerInstance)
	{
	this.outerInstance = outerInstance;
	}

	protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
	{
	Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
	return new TokenStreamComponents(tokenizer, new TokenFilterAnonymousClass(this, tokenizer));
	}

	private class TokenFilterAnonymousClass : TokenFilter
	{
	private readonly AnalyzerAnonymousClass2 outerInstance;

	public TokenFilterAnonymousClass(AnalyzerAnonymousClass2 outerInstance, Tokenizer tokenizer)
	: base(tokenizer)
	{
	this.outerInstance = outerInstance;
	first = true;
	termAtt = AddAttribute<ICharTermAttribute>();
	payloadAtt = AddAttribute<IPayloadAttribute>();
	posIncrAtt = AddAttribute<IPositionIncrementAttribute>();
	}

	internal bool first;
	internal AttributeSource.State state;

	public sealed override bool IncrementToken()
	{
	if (state != null)
	{
	RestoreState(state);
	payloadAtt.Payload = null;
	posIncrAtt.PositionIncrement = 0;
	termAtt.SetEmpty().Append("b");
	state = null;
	return true;
	}

	bool hasNext = m_input.IncrementToken();
	if (!hasNext)
	{
	return false;
	}
	if (char.IsDigit(termAtt.Buffer[0]))
	{
	posIncrAtt.PositionIncrement = termAtt.Buffer[0] - '0';
	}
	if (first)
	{
	// set payload on first position only
	payloadAtt.Payload = new BytesRef(new byte[] { 100 });
	first = false;
	}

	// index a "synonym" for every token
	state = CaptureState();
	return true;
	}

	public sealed override void Reset()
	{
	base.Reset();
	first = true;
	state = null;
	}

	internal readonly ICharTermAttribute termAtt;
	internal readonly IPayloadAttribute payloadAtt;
	internal readonly IPositionIncrementAttribute posIncrAtt;
	}
	}

	[Test]
	public virtual void TestPreAnalyzedField()
	{
	IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
	Document doc = new Document();

	doc.Add(new TextField("preanalyzed", new TokenStreamAnonymousClass(this)));

	writer.AddDocument(doc);
	writer.Commit();
	SegmentCommitInfo info = writer.NewestSegment();
	writer.Dispose();
	SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random));

	DocsAndPositionsEnum termPositions = reader.GetTermPositionsEnum(new Term("preanalyzed", "term1"));
	Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
	Assert.AreEqual(1, termPositions.Freq);
	Assert.AreEqual(0, termPositions.NextPosition());

	termPositions = reader.GetTermPositionsEnum(new Term("preanalyzed", "term2"));
	Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
	Assert.AreEqual(2, termPositions.Freq);
	Assert.AreEqual(1, termPositions.NextPosition());
	Assert.AreEqual(3, termPositions.NextPosition());

	termPositions = reader.GetTermPositionsEnum(new Term("preanalyzed", "term3"));
	Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
	Assert.AreEqual(1, termPositions.Freq);
	Assert.AreEqual(2, termPositions.NextPosition());
	reader.Dispose();
	}

	private class TokenStreamAnonymousClass : TokenStream
	{
	private readonly TestDocumentWriter outerInstance;

	public TokenStreamAnonymousClass(TestDocumentWriter outerInstance)
	{
	this.outerInstance = outerInstance;
	tokens = new string[] { "term1", "term2", "term3", "term2" };
	index = 0;
	termAtt = AddAttribute<ICharTermAttribute>();
	}

	private string[] tokens;
	private int index;

	private ICharTermAttribute termAtt;

	public sealed override bool IncrementToken()
	{
	if (index == tokens.Length)
	{
	return false;
	}
	else
	{
	ClearAttributes();
	termAtt.SetEmpty().Append(tokens[index++]);
	return true;
	}
	}
	}

	/// <summary>
	/// Test adding two fields with the same name, but
	/// with different term vector setting (LUCENE-766).
	/// </summary>
	[Test]
	public virtual void TestMixedTermVectorSettingsSameField()
	{
	Document doc = new Document();
	// f1 first without tv then with tv
	doc.Add(NewStringField("f1", "v1", Field.Store.YES));
	FieldType customType2 = new FieldType(StringField.TYPE_STORED);
	customType2.StoreTermVectors = true;
	customType2.StoreTermVectorOffsets = true;
	customType2.StoreTermVectorPositions = true;
	doc.Add(NewField("f1", "v2", customType2));
	// f2 first with tv then without tv
	doc.Add(NewField("f2", "v1", customType2));
	doc.Add(NewStringField("f2", "v2", Field.Store.YES));

	IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
	writer.AddDocument(doc);
	writer.Dispose();

	TestUtil.CheckIndex(dir);

	IndexReader reader = DirectoryReader.Open(dir);
	// f1
	Terms tfv1 = reader.GetTermVectors(0).GetTerms("f1");
	Assert.IsNotNull(tfv1);
	Assert.AreEqual(2, tfv1.Count, "the 'with_tv' setting should rule!");
	// f2
	Terms tfv2 = reader.GetTermVectors(0).GetTerms("f2");
	Assert.IsNotNull(tfv2);
	Assert.AreEqual(2, tfv2.Count, "the 'with_tv' setting should rule!");
	reader.Dispose();
	}

	/// <summary>
	/// Test adding two fields with the same name, one indexed
	/// the other stored only. The omitNorms and omitTermFreqAndPositions setting
	/// of the stored field should not affect the indexed one (LUCENE-1590)
	/// </summary>
	[Test]
	public virtual void TestLUCENE_1590()
	{
	Document doc = new Document();
	// f1 has no norms
	FieldType customType = new FieldType(TextField.TYPE_NOT_STORED);
	customType.OmitNorms = true;
	FieldType customType2 = new FieldType();
	customType2.IsStored = true;
	doc.Add(NewField("f1", "v1", customType));
	doc.Add(NewField("f1", "v2", customType2));
	// f2 has no TF
	FieldType customType3 = new FieldType(TextField.TYPE_NOT_STORED);
	customType3.IndexOptions = IndexOptions.DOCS_ONLY;
	Field f = NewField("f2", "v1", customType3);
	doc.Add(f);
	doc.Add(NewField("f2", "v2", customType2));

	IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
	writer.AddDocument(doc);
	writer.ForceMerge(1); // be sure to have a single segment
	writer.Dispose();

	TestUtil.CheckIndex(dir);

	SegmentReader reader = GetOnlySegmentReader(DirectoryReader.Open(dir));
	FieldInfos fi = reader.FieldInfos;
	// f1
	Assert.IsFalse(fi.FieldInfo("f1").HasNorms, "f1 should have no norms");
	Assert.AreEqual(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS, fi.FieldInfo("f1").IndexOptions, "omitTermFreqAndPositions field bit should not be set for f1");
	// f2
	Assert.IsTrue(fi.FieldInfo("f2").HasNorms, "f2 should have norms");
	Assert.AreEqual(IndexOptions.DOCS_ONLY, fi.FieldInfo("f2").IndexOptions, "omitTermFreqAndPositions field bit should be set for f2");
	reader.Dispose();
	}
	}
	}