private static void CheckPositionIncrement(Version version, bool enablePositionIncrements)
{
if (!enablePositionIncrements && version.OnOrAfter(Version.LUCENE_44))
{
throw new System.ArgumentException("enablePositionIncrements=false is not supported anymore as of Lucene 4.4 as it can create broken token streams");
}
}
/// <summary>
/// Performs the explanation.
/// </summary>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="fsDirectory">The fs directory.</param>
/// <param name="searchQuery">The search query.</param>
/// <param name="resultId">The result identifier.</param>
/// <returns></returns>
protected virtual string PerformExplain(Version luceneVersion, FSDirectory fsDirectory, string searchQuery, int resultId)
{
/*
* The obvious problem here is that we're not using the exact same search as the real one.
*/
var explanation = string.Empty;
using (var indexSearcher = new IndexSearcher(fsDirectory, false))
{
var analyzer = new StandardAnalyzer(luceneVersion);
var queryParser = new MultiFieldQueryParser(luceneVersion, new[] { "Id".ToLowerInvariant() }, analyzer)
{
DefaultOperator = QueryParser.Operator.AND
};
var query = this.searchQueryParser.ParseQuery(searchQuery, queryParser);
explanation = indexSearcher.Explain(query, resultId).ToHtml();
analyzer.Close();
}
return explanation;
}
/// <summary>Builds an analyzer with the given stop words.</summary>
/// <param name="matchVersion">Lucene version to match See <see cref="Version">above</see> />
///
/// </param>
/// <param name="stopWords">stop words
/// </param>
public StandardAnalyzer(Version matchVersion, ISet<string> stopWords)
{
stopSet = stopWords;
SetOverridesTokenStreamMethod<StandardAnalyzer>();
enableStopPositionIncrements = StopFilter.GetEnablePositionIncrementsVersionDefault(matchVersion);
replaceInvalidAcronym = matchVersion.OnOrAfter(Version.LUCENE_24);
this.matchVersion = matchVersion;
}
/// <summary>
/// Creates a new <seealso cref="CharTokenizer"/> instance
/// </summary>
/// <param name="matchVersion">
/// Lucene version to match </param>
/// <param name="input">
/// the input to split up into tokens </param>
protected CharTokenizer(Version matchVersion, TextReader input)
: base(input)
{
termAtt = AddAttribute<ICharTermAttribute>();
offsetAtt = AddAttribute<IOffsetAttribute>();
charUtils = CharacterUtils.GetInstance(matchVersion);
}
/// <summary>
/// Creates a new <seealso cref="DictionaryCompoundWordTokenFilter"/>
/// </summary>
/// <param name="matchVersion">
/// Lucene version to enable correct Unicode 4.0 behavior in the
/// dictionaries if Version > 3.0. See <a
/// href="CompoundWordTokenFilterBase.html#version"
/// >CompoundWordTokenFilterBase</a> for details. </param>
/// <param name="input">
/// the <seealso cref="TokenStream"/> to process </param>
/// <param name="dictionary">
/// the word dictionary to match against. </param>
/// <param name="minWordSize">
/// only words longer than this get processed </param>
/// <param name="minSubwordSize">
/// only subwords longer than this get to the output stream </param>
/// <param name="maxSubwordSize">
/// only subwords shorter than this get to the output stream </param>
/// <param name="onlyLongestMatch">
/// Add only the longest matching subword to the stream </param>
public DictionaryCompoundWordTokenFilter(Version matchVersion, TokenStream input, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, bool onlyLongestMatch)
: base(matchVersion, input, dictionary, minWordSize, minSubwordSize, maxSubwordSize, onlyLongestMatch)
{
if (dictionary == null)
{
throw new System.ArgumentException("dictionary cannot be null");
}
}
/// <summary>
/// Creates a new <seealso cref="DictionaryCompoundWordTokenFilter"/>
/// </summary>
/// <param name="matchVersion">
/// Lucene version to enable correct Unicode 4.0 behavior in the
/// dictionaries if Version > 3.0. See <a
/// href="CompoundWordTokenFilterBase.html#version"
/// >CompoundWordTokenFilterBase</a> for details. </param>
/// <param name="input">
/// the <seealso cref="TokenStream"/> to process </param>
/// <param name="dictionary">
/// the word dictionary to match against. </param>
public DictionaryCompoundWordTokenFilter(Version matchVersion, TokenStream input, CharArraySet dictionary)
: base(matchVersion, input, dictionary)
{
if (dictionary == null)
{
throw new System.ArgumentException("dictionary cannot be null");
}
}
public LuceneSearch(string typeName, string indexDir, IDocumentBuilder docBuilder, IIndexPathBuilder pathBuilder, IFacetFieldNameProvider facetFieldNameProvider, LN.Util.Version version)
{
this.TypeName = typeName;
this.Directory = indexDir;
this.version = version;
this.DocumentBuilder = docBuilder;
this.IndexPathBuilder = pathBuilder;
this.facetFieldNameProvider = facetFieldNameProvider;
indexPaths = new Dictionary<string, LuceneIndexPath>();
}
/// <summary>
/// Construct a token stream filtering the given input using a Set of common
/// words to create bigrams. Outputs both unigrams with position increment and
/// bigrams with position increment 0 type=gram where one or both of the words
/// in a potential bigram are in the set of common words .
/// </summary>
/// <param name="input"> TokenStream input in filter chain </param>
/// <param name="commonWords"> The set of common words. </param>
public CommonGramsFilter(Version matchVersion, TokenStream input, CharArraySet commonWords)
: base(input)
{
termAttribute = AddAttribute<ICharTermAttribute>();
offsetAttribute = AddAttribute<IOffsetAttribute>();
typeAttribute = AddAttribute<ITypeAttribute>();
posIncAttribute = AddAttribute<IPositionIncrementAttribute>();
posLenAttribute = AddAttribute<IPositionLengthAttribute>();
this.commonWords = commonWords;
}
/// <summary>
/// Optimizes the Lucene index.
/// </summary>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="fsDirectory">The fs directory.</param>
/// <param name="maxFieldLength">Maximum length of the field.</param>
public virtual void Optimize(Version luceneVersion, FSDirectory fsDirectory, IndexWriter.MaxFieldLength maxFieldLength)
{
var analyzer = new StandardAnalyzer(luceneVersion);
using (var indexWriter = new IndexWriter(fsDirectory, analyzer, maxFieldLength))
{
analyzer.Close();
indexWriter.Optimize();
}
}
/// <summary>
/// Clears the entire index.
/// </summary>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="fsDirectory">The fs directory.</param>
/// <param name="maxFieldLength">Maximum length of the field.</param>
public virtual void ClearIndex(Version luceneVersion, FSDirectory fsDirectory, IndexWriter.MaxFieldLength maxFieldLength)
{
var analyzer = new StandardAnalyzer(luceneVersion);
using (var indexWriter = new IndexWriter(fsDirectory, analyzer, maxFieldLength))
{
indexWriter.DeleteAll();
analyzer.Close();
}
}
/// <summary>
/// Creates a new Base Lucene Search Provider
/// </summary>
/// <param name="ver">Lucene Version</param>
/// <param name="indexDir">Directory</param>
/// <param name="analyzer">Analyzer</param>
/// <param name="schema">Index Schema</param>
public BaseLuceneSearchProvider(LucUtil.Version ver, Directory indexDir, Analyzer analyzer, IFullTextIndexSchema schema)
{
this._version = ver;
this._indexDir = indexDir;
this._analyzer = analyzer;
this._schema = schema;
//Create necessary objects
this._searcher = new LucSearch.IndexSearcher(this._indexDir, true);
this._parser = new QueryParser(this._version, this._schema.IndexField, this._analyzer);
}
/**
* Builds an analyzer with the default stop words: {@link #DEFAULT_STOPWORD_FILE}.
*/
public ArabicAnalyzer(Version matchVersion)
{
this.matchVersion = matchVersion;
using (StreamReader reader = new StreamReader(System.Reflection.Assembly.GetAssembly(this.GetType()).GetManifestResourceStream("Lucene.Net.Analyzers.AR." + DEFAULT_STOPWORD_FILE)))
{
while (!reader.EndOfStream)
{
string word = reader.ReadLine();
stoptable.Add(word, word);
}
}
}
/// <summary>
/// Clears an item from the index.
/// </summary>
/// <param name="id">The identifier.</param>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="fsDirectory">The fs directory.</param>
/// <param name="maxFieldLength">Maximum length of the field.</param>
public void ClearIndex(string id, Version luceneVersion, FSDirectory fsDirectory, IndexWriter.MaxFieldLength maxFieldLength)
{
var analyzer = new StandardAnalyzer(luceneVersion);
using (var indexWriter = new IndexWriter(fsDirectory, analyzer, maxFieldLength))
{
var searchQuery = new TermQuery(new Term("Key", id));
indexWriter.DeleteDocuments(searchQuery);
analyzer.Close();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SearchServiceConfiguration" /> class.
/// </summary>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="maxFieldLength">Maximum length of the field.</param>
/// <param name="indexFolder">The index folder.</param>
/// <param name="writeLockSemaphoreFileName">Name of the write lock semaphore file.</param>
/// <param name="hitLimit">The hit limit.</param>
public SearchServiceConfiguration(
Version luceneVersion,
IndexWriter.MaxFieldLength maxFieldLength,
string indexFolder,
string writeLockSemaphoreFileName,
int hitLimit)
{
this.luceneVersion = luceneVersion.IsNull() ? Version.LUCENE_30 : luceneVersion;
this.maxFieldLength = maxFieldLength.IsNull() ? IndexWriter.MaxFieldLength.UNLIMITED : maxFieldLength;
this.indexFolder = indexFolder.IsNullOrEmpty() ? @"C:\SearchIndex\" : indexFolder;
this.writeLockSemaphoreFileName = writeLockSemaphoreFileName.IsNullOrEmpty() ? Path.Combine(this.indexFolder, "write.lock") : writeLockSemaphoreFileName;
this.hitLimit = hitLimit.Equals(EqualityComparer<int>.Default.Equals(hitLimit, default(int))) ? 1000 : hitLimit;
this.fsDirectory = this.GetDirectory();
}
public HomeController()
{
string path = HostingEnvironment.MapPath("~/App_Data/LuceneIndex");
var fsd = FSDirectory.Open(new DirectoryInfo(path));
_indexReader = IndexReader.Open(fsd, true);
_indexSearcher = new IndexSearcher(fsd, true);
_luceneVersion = Version.LUCENE_29;
_searchFields = new string[]
{
LuceneIndexFieldMap.FirstNameField,
LuceneIndexFieldMap.CityField,
LuceneIndexFieldMap.TimeZoneField
};
_facetFields = new string[]
{
LuceneIndexFieldMap.TimeZoneField
};
_simpleFacetedSearch = new SimpleFacetedSearch(_indexReader, _facetFields);
}
protected internal CompoundWordTokenFilterBase(Version matchVersion, TokenStream input, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, bool onlyLongestMatch) : base(input)
{
this.matchVersion = matchVersion;
this.tokens = new LinkedList<CompoundToken>();
if (minWordSize < 0)
{
throw new System.ArgumentException("minWordSize cannot be negative");
}
this.minWordSize = minWordSize;
if (minSubwordSize < 0)
{
throw new System.ArgumentException("minSubwordSize cannot be negative");
}
this.minSubwordSize = minSubwordSize;
if (maxSubwordSize < 0)
{
throw new System.ArgumentException("maxSubwordSize cannot be negative");
}
this.maxSubwordSize = maxSubwordSize;
this.onlyLongestMatch = onlyLongestMatch;
this.dictionary = dictionary;
}
/*
* Initializes this analyzer with the Analyzer object that actually produces the tokens
*
* @param _delegate The choice of {@link Analyzer} that is used to produce the token stream which needs filtering
*/
public QueryAutoStopWordAnalyzer(Version matchVersion, Analyzer _delegate)
{
this._delegate = _delegate;
SetOverridesTokenStreamMethod<QueryAutoStopWordAnalyzer>();
this.matchVersion = matchVersion;
}
public LuceneSearch(string typeName, string indexDir, IDocumentBuilder docBuilder, IIndexPathBuilder pathBuilder, IFacetFieldNameProvider facetFieldNameProvider, LN.Util.Version version)
{
this.TypeName = typeName;
this.Directory = indexDir;
this.version = version;
this.DocumentBuilder = docBuilder;
this.IndexPathBuilder = pathBuilder;
this.facetFieldNameProvider = facetFieldNameProvider;
indexPaths = new Dictionary <string, LuceneIndexPath>();
}
/// <summary>
/// Creates a new <seealso cref="HyphenationCompoundWordTokenFilter"/> instance.
/// </summary>
/// <param name="matchVersion">
/// Lucene version to enable correct Unicode 4.0 behavior in the
/// dictionaries if Version > 3.0. See <a
/// href="CompoundWordTokenFilterBase.html#version"
/// >CompoundWordTokenFilterBase</a> for details. </param>
/// <param name="input">
/// the <seealso cref="TokenStream"/> to process </param>
/// <param name="hyphenator">
/// the hyphenation pattern tree to use for hyphenation </param>
/// <param name="dictionary">
/// the word dictionary to match against. </param>
/// <param name="minWordSize">
/// only words longer than this get processed </param>
/// <param name="minSubwordSize">
/// only subwords longer than this get to the output stream </param>
/// <param name="maxSubwordSize">
/// only subwords shorter than this get to the output stream </param>
/// <param name="onlyLongestMatch">
/// Add only the longest matching subword to the stream </param>
public HyphenationCompoundWordTokenFilter(Version matchVersion, TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, bool onlyLongestMatch)
: base(matchVersion, input, dictionary, minWordSize, minSubwordSize, maxSubwordSize, onlyLongestMatch)
{
this.hyphenator = hyphenator;
}
/// <summary>
/// Construct a new LowerCaseTokenizer.
/// </summary>
/// <param name="matchVersion">
/// Lucene version to match See <seealso cref="<a href="#version">above</a>"/>
/// </param>
/// <param name="in">
/// the input to split up into tokens </param>
public LowerCaseTokenizer(Version matchVersion, TextReader @in)
: base(matchVersion, @in)
{
}
/// <summary>
/// Construct a new WhitespaceTokenizer using a given
/// <seealso cref="org.apache.lucene.util.AttributeSource.AttributeFactory"/>.
///
/// @param
/// matchVersion Lucene version to match See
/// <seealso cref="<a href="#version">above</a>"/> </summary>
/// <param name="factory">
/// the attribute factory to use for this <seealso cref="Tokenizer"/> </param>
/// <param name="in">
/// the input to split up into tokens </param>
public WhitespaceTokenizer(Version matchVersion, AttributeFactory factory, TextReader @in)
: base(matchVersion, factory, @in)
{
}
/// <summary>
/// Create a HyphenationCompoundWordTokenFilter with no dictionary.
/// <para>
/// Calls {@link #HyphenationCompoundWordTokenFilter(Version, TokenStream, HyphenationTree, int, int, int)
/// HyphenationCompoundWordTokenFilter(matchVersion, input, hyphenator,
/// DEFAULT_MIN_WORD_SIZE, DEFAULT_MIN_SUBWORD_SIZE, DEFAULT_MAX_SUBWORD_SIZE }
/// </para>
/// </summary>
public HyphenationCompoundWordTokenFilter(Version matchVersion, TokenStream input, HyphenationTree hyphenator)
: this(matchVersion, input, hyphenator, DEFAULT_MIN_WORD_SIZE, DEFAULT_MIN_SUBWORD_SIZE, DEFAULT_MAX_SUBWORD_SIZE)
{
}
/// <summary>
/// Explains the search score for a result.
/// </summary>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="fsDirectory">The fs directory.</param>
/// <param name="input">The input.</param>
/// <param name="resultId">The result identifier.</param>
/// <returns></returns>
public virtual string Explain(Version luceneVersion, FSDirectory fsDirectory, string input, int resultId)
{
return string.IsNullOrEmpty(input) ? string.Empty : this.PerformExplain(luceneVersion, fsDirectory, input, resultId);
}
/// <summary>
/// Creates a new <seealso cref="WhitespaceAnalyzer"/> </summary>
/// <param name="matchVersion"> Lucene version to match See <seealso cref="<a href="#version">above</a>"/> </param>
public WhitespaceAnalyzer(Version matchVersion)
{
this.matchVersion = matchVersion;
}
/// <summary>
/// Creates a new Lucene Search Provider
/// </summary>
/// <param name="ver">Version</param>
/// <param name="indexDir">Directory</param>
/// <param name="analyzer">Analyzer</param>
/// <param name="autoSync">Whether to keep the search provider in sync with the index</param>
/// <remarks>
/// Uses the <see cref="DefaultIndexSchema">DefaultIndexSchema</see> as the schema
/// </remarks>
public LuceneSearchProvider(LucUtil.Version ver, Directory indexDir, Analyzer analyzer, bool autoSync)
: this(ver, indexDir, analyzer, new DefaultIndexSchema(), autoSync)
{
}
/*
* Initializes this analyzer with the Analyzer object that actually produces the tokens
*
* @param _delegate The choice of {@link Analyzer} that is used to produce the token stream which needs filtering
*/
public QueryAutoStopWordAnalyzer(Version matchVersion, Analyzer _delegate)
{
this._delegate = _delegate;
SetOverridesTokenStreamMethod <QueryAutoStopWordAnalyzer>();
this.matchVersion = matchVersion;
}
/// <summary>Builds an analyzer with the default stop words (<see cref="STOP_WORDS_SET" />).
/// </summary>
/// <param name="matchVersion">Lucene version to match see <see cref="Version">above</see></param>
public StandardAnalyzer(Version matchVersion)
: this(matchVersion, STOP_WORDS_SET)
{
}
/// <summary>
/// Create a new <seealso cref="FilteringTokenFilter"/>. </summary>
/// <param name="version"> the Lucene match version </param>
/// <param name="in"> the <seealso cref="TokenStream"/> to consume </param>
public FilteringTokenFilter(Version version, TokenStream @in)
: base(@in)
{
this.version = version;
this.enablePositionIncrements = true;
}
public FilteringTokenFilter(Version version, bool enablePositionIncrements, TokenStream input)
: this(version, input)
{
CheckPositionIncrement(version, enablePositionIncrements);
this.enablePositionIncrements = enablePositionIncrements;
}
/// <summary>
/// Creates a new Lucene Search Provider
/// </summary>
/// <param name="ver">Version</param>
/// <param name="indexDir">Directory</param>
/// <param name="analyzer">Analyzer</param>
/// <remarks>
/// Uses the <see cref="DefaultIndexSchema">DefaultIndexSchema</see> as the schema
/// </remarks>
public LuceneSearchProvider(LucUtil.Version ver, Directory indexDir, Analyzer analyzer)
: this(ver, indexDir, analyzer, true)
{
}
/// <summary> Returns version-dependent default for enablePositionIncrements. Analyzers
/// that embed StopFilter use this method when creating the StopFilter. Prior
/// to 2.9, this returns false. On 2.9 or later, it returns true.
/// </summary>
public static bool GetEnablePositionIncrementsVersionDefault(Version matchVersion)
{
return(matchVersion.OnOrAfter(Version.LUCENE_29));
}
/// <summary> Creates a new StandardTokenizer with a given
/// <see cref="Lucene.Net.Util.AttributeSource.AttributeFactory" />
/// </summary>
public StandardTokenizer(Version matchVersion, AttributeFactory factory, System.IO.TextReader input):base(factory)
{
InitBlock();
this.scanner = new StandardTokenizerImpl(input);
Init(input, matchVersion);
}
public ComplexPhraseQueryParser(Version matchVersion, String f, Analyzer a) : base(matchVersion, f, a)
{
}
/// Construct a new WhitespaceTokenizer. * <param name="matchVersion"> Lucene version
/// to match See <seealso cref="<a href="#version">above</a>"/>
/// </param>
/// <param name="in">
/// the input to split up into tokens </param>
public WhitespaceTokenizer(Version matchVersion, TextReader @in)
: base(matchVersion, @in)
{
}
/// <summary>
/// Creates a new Base Lucene Search Provider.
/// </summary>
/// <param name="ver">Lucene Version.</param>
/// <param name="indexDir">Directory.</param>
/// <param name="analyzer">Analyzer.</param>
/// <param name="schema">Index Schema.</param>
public BaseLuceneSearchProvider(LucUtil.Version ver, Directory indexDir, Analyzer analyzer, IFullTextIndexSchema schema)
: this(ver, indexDir, analyzer, schema, true)
{
_uriComparer = new UriComparer();
}
/// <summary>
/// Create a HyphenationCompoundWordTokenFilter with no dictionary.
/// <para>
/// Calls {@link #HyphenationCompoundWordTokenFilter(Version, TokenStream, HyphenationTree, CharArraySet, int, int, int, boolean)
/// HyphenationCompoundWordTokenFilter(matchVersion, input, hyphenator,
/// null, minWordSize, minSubwordSize, maxSubwordSize }
/// </para>
/// </summary>
public HyphenationCompoundWordTokenFilter(Version matchVersion, TokenStream input, HyphenationTree hyphenator, int minWordSize, int minSubwordSize, int maxSubwordSize)
: this(matchVersion, input, hyphenator, null, minWordSize, minSubwordSize, maxSubwordSize, false)
{
}
/// <summary>
/// Creates a new Lucene Search Provider
/// </summary>
/// <param name="ver">Version</param>
/// <param name="indexDir">Directory</param>
/// <remarks>
/// Uses the <see cref="DefaultIndexSchema">DefaultIndexSchema</see> as the schema and the <see cref="StandardAnalyzer">StandardAnalyzer</see> as the analyzer
/// </remarks>
public LuceneSearchProvider(LucUtil.Version ver, Directory indexDir)
: this(ver, indexDir, new StandardAnalyzer(ver), new DefaultIndexSchema())
{
}
/// <summary>
/// Creates a new <seealso cref="HyphenationCompoundWordTokenFilter"/> instance.
/// </summary>
/// <param name="matchVersion">
/// Lucene version to enable correct Unicode 4.0 behavior in the
/// dictionaries if Version > 3.0. See <a
/// href="CompoundWordTokenFilterBase.html#version"
/// >CompoundWordTokenFilterBase</a> for details. </param>
/// <param name="input">
/// the <seealso cref="TokenStream"/> to process </param>
/// <param name="hyphenator">
/// the hyphenation pattern tree to use for hyphenation </param>
/// <param name="dictionary">
/// the word dictionary to match against. </param>
public HyphenationCompoundWordTokenFilter(Version matchVersion, TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary)
: this(matchVersion, input, hyphenator, dictionary, DEFAULT_MIN_WORD_SIZE, DEFAULT_MIN_SUBWORD_SIZE, DEFAULT_MAX_SUBWORD_SIZE, false)
{
}
/// <summary>
/// Creates a new Lucene Search Provider
/// </summary>
/// <param name="ver">Version</param>
/// <param name="indexDir">Directory</param>
/// <param name="schema">Index Schema</param>
/// <param name="autoSync">Whether to keep the search provider in sync with the index</param>
/// <remarks>
/// Uses the <see cref="StandardAnalyzer">StandardAnalyzer</see> as the analyzer
/// </remarks>
public LuceneSearchProvider(LucUtil.Version ver, Directory indexDir, IFullTextIndexSchema schema, bool autoSync)
: this(ver, indexDir, new StandardAnalyzer(ver), schema, autoSync)
{
}
public PorterStemAnalyzer(Version version) : base(version)
{
}
/// <summary>
/// Creates a new Lucene Search Provider
/// </summary>
/// <param name="ver">Version</param>
/// <param name="indexDir">Directory</param>
/// <param name="analyzer">Analyzer</param>
/// <param name="schema">Index Schema</param>
/// <param name="autoSync">Whether to keep the search provider in sync with the index</param>
public LuceneSearchProvider(LucUtil.Version ver, Directory indexDir, Analyzer analyzer, IFullTextIndexSchema schema, bool autoSync)
: base(ver, indexDir, analyzer, schema, autoSync)
{
}
/// <summary>
/// Construct a new LowerCaseTokenizer using a given
/// <seealso cref="org.apache.lucene.util.AttributeSource.AttributeFactory"/>.
/// </summary>
/// <param name="matchVersion">
/// Lucene version to match See <seealso cref="<a href="#version">above</a>"/> </param>
/// <param name="factory">
/// the attribute factory to use for this <seealso cref="Tokenizer"/> </param>
/// <param name="in">
/// the input to split up into tokens </param>
public LowerCaseTokenizer(Version matchVersion, AttributeFactory factory, TextReader @in)
: base(matchVersion, factory, @in)
{
}
/// <summary>
/// Creates a new Lucene Search Provider
/// </summary>
/// <param name="ver">Version</param>
/// <param name="indexDir">Directory</param>
/// <param name="analyzer">Analyzer</param>
/// <param name="schema">Index Schema</param>
public LuceneSearchProvider(LucUtil.Version ver, Directory indexDir, Analyzer analyzer, IFullTextIndexSchema schema)
: this(ver, indexDir, analyzer, schema, true)
{
}
/// <summary>
/// Returns a <seealso cref="CharacterUtils"/> implementation according to the given
/// <seealso cref="Version"/> instance.
/// </summary>
/// <param name="matchVersion">
/// a version instance </param>
/// <returns> a <seealso cref="CharacterUtils"/> implementation according to the given
/// <seealso cref="Version"/> instance. </returns>
public static CharacterUtils GetInstance(Version matchVersion)
{
return(matchVersion.OnOrAfter(Version.LUCENE_31) ? JAVA_5 : JAVA_4);
}
/// <summary>Builds an analyzer with the stop words from the given reader.</summary>
/// <seealso cref="WordlistLoader.GetWordSet(System.IO.TextReader)">
/// </seealso>
/// <param name="matchVersion">Lucene version to match See <see cref="Version">above</see> />
///
/// </param>
/// <param name="stopwords">Reader to read stop words from
/// </param>
public StandardAnalyzer(Version matchVersion, System.IO.TextReader stopwords)
: this(matchVersion, WordlistLoader.GetWordSet(stopwords))
{
}
private void Init(System.IO.TextReader input, Version matchVersion)
{
if (matchVersion.OnOrAfter(Version.LUCENE_24))
{
replaceInvalidAcronym = true;
}
else
{
replaceInvalidAcronym = false;
}
this.input = input;
termAtt = AddAttribute<ITermAttribute>();
offsetAtt = AddAttribute<IOffsetAttribute>();
posIncrAtt = AddAttribute<IPositionIncrementAttribute>();
typeAtt = AddAttribute<ITypeAttribute>();
}
/// <summary> Creates a new StandardTokenizer with a given
/// <see cref="Lucene.Net.Util.AttributeSource.AttributeFactory" />
/// </summary>
public StandardTokenizer(Version matchVersion, AttributeFactory factory, System.IO.TextReader input) : base(factory)
{
InitBlock();
this.scanner = new StandardTokenizerImpl(input);
Init(input, matchVersion);
}
