Class ClassicAnalyzer

Filters ClassicTokenizer with ClassicFilter, LowerCaseFilter and StopFilter, using a list of English stop words.

You must specify the required LuceneVersion compatibility when creating ClassicAnalyzer:

  • As of 3.1, StopFilter correctly handles Unicode 4.0 supplementary characters in stopwords
  • As of 2.9, StopFilter preserves position increments
  • As of 2.4, Tokens incorrectly identified as acronyms are corrected (see LUCENE-1068)
ClassicAnalyzer was named StandardAnalyzer in Lucene versions prior to 3.1. As of 3.1, StandardAnalyzer implements Unicode text segmentation, as specified by UAX#29.

Inheritance
System.Object
Analyzer
StopwordAnalyzerBase
ClassicAnalyzer
Inherited Members
Lucene.Net.Analysis.Analyzer.NewAnonymous(System.Func<System.String, System.IO.TextReader, Lucene.Net.Analysis.TokenStreamComponents>)
Lucene.Net.Analysis.Analyzer.NewAnonymous(System.Func<System.String, System.IO.TextReader, Lucene.Net.Analysis.TokenStreamComponents>, Lucene.Net.Analysis.ReuseStrategy)
Lucene.Net.Analysis.Analyzer.NewAnonymous(System.Func<System.String, System.IO.TextReader, Lucene.Net.Analysis.TokenStreamComponents>, System.Func<System.String, System.IO.TextReader, System.IO.TextReader>)
Lucene.Net.Analysis.Analyzer.NewAnonymous(System.Func<System.String, System.IO.TextReader, Lucene.Net.Analysis.TokenStreamComponents>, System.Func<System.String, System.IO.TextReader, System.IO.TextReader>, Lucene.Net.Analysis.ReuseStrategy)
Lucene.Net.Analysis.Analyzer.GetTokenStream(System.String, System.IO.TextReader)
Lucene.Net.Analysis.Analyzer.InitReader(System.String, System.IO.TextReader)
Lucene.Net.Analysis.Analyzer.GetObjectData(System.Runtime.Serialization.SerializationInfo, System.Runtime.Serialization.StreamingContext)
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Assembly: Lucene.Net.Analysis.Common.dll
Syntax
[Serializable]
public sealed class ClassicAnalyzer : StopwordAnalyzerBase, IDisposable

Constructors

Name Description
ClassicAnalyzer(LuceneVersion)

Builds an analyzer with the default stop words (STOP_WORDS_SET).
ClassicAnalyzer(LuceneVersion, CharArraySet)

Builds an analyzer with the given stop words.

ClassicAnalyzer(LuceneVersion, TextReader)

Builds an analyzer with the stop words from the given reader.

Fields

Name Description
DEFAULT_MAX_TOKEN_LENGTH

Default maximum allowed token length

STOP_WORDS_SET

An unmodifiable set containing some common English words that are usually not useful for searching.

Properties

Name Description
MaxTokenLength

Gets or sets maximum allowed token length. If a token is seen that exceeds this length then it is discarded. This setting only takes effect the next time tokenStream or tokenStream is called.

Methods

Name Description
CreateComponents(String, TextReader)

Extension Methods