Class GermanAnalyzer

Lucene.Net.Analysis.Analyzer for German language.

Supports an external list of stopwords (words that will not be indexed at all) and an external list of exclusions (word that will not be stemmed, but indexed). A default set of stopwords is used unless an alternative list is specified, but the exclusion list is empty by default.

You must specify the required Lucene.Net.Util.LuceneVersion compatibility when creating GermanAnalyzer:

NOTE: This class uses the same Lucene.Net.Util.LuceneVersion dependent settings as StandardAnalyzer.

Inheritance

object

Analyzer

StopwordAnalyzerBase

GermanAnalyzer

Implements

IDisposable

Inherited Members

StopwordAnalyzerBase.StopwordSet

Analyzer.NewAnonymous(Func<string, TextReader, TokenStreamComponents>)

Analyzer.NewAnonymous(Func<string, TextReader, TokenStreamComponents>, ReuseStrategy)

Analyzer.NewAnonymous(Func<string, TextReader, TokenStreamComponents>, Func<string, TextReader, TextReader>)

Analyzer.NewAnonymous(Func<string, TextReader, TokenStreamComponents>, Func<string, TextReader, TextReader>, ReuseStrategy)

Analyzer.GetTokenStream(string, TextReader)

Analyzer.GetTokenStream(string, string)

Analyzer.GetPositionIncrementGap(string)

Analyzer.GetOffsetGap(string)

Analyzer.Strategy

Analyzer.Dispose()

Analyzer.GLOBAL_REUSE_STRATEGY

Analyzer.PER_FIELD_REUSE_STRATEGY

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Lucene.Net.Analysis.De

Assembly: Lucene.Net.Analysis.Common.dll

Syntax

public sealed class GermanAnalyzer : StopwordAnalyzerBase, IDisposable

Constructors

GermanAnalyzer(LuceneVersion)

Builds an analyzer with the default stop words: DefaultStopSet.

Declaration

public GermanAnalyzer(LuceneVersion matchVersion)

Parameters

Type	Name	Description
LuceneVersion	matchVersion

GermanAnalyzer(LuceneVersion, CharArraySet)

Builds an analyzer with the given stop words

Declaration

public GermanAnalyzer(LuceneVersion matchVersion, CharArraySet stopwords)

Parameters

Type	Name	Description
LuceneVersion	matchVersion	lucene compatibility version
CharArraySet	stopwords	a stopword set

GermanAnalyzer(LuceneVersion, CharArraySet, CharArraySet)

Builds an analyzer with the given stop words

Declaration

public GermanAnalyzer(LuceneVersion matchVersion, CharArraySet stopwords, CharArraySet stemExclusionSet)

Parameters

Type	Name	Description
LuceneVersion	matchVersion	lucene compatibility version
CharArraySet	stopwords	a stopword set
CharArraySet	stemExclusionSet	a stemming exclusion set

Fields

DEFAULT_STOPWORD_FILE

File containing default German stopwords.

Declaration

public const string DEFAULT_STOPWORD_FILE = "german_stop.txt"

Field Value

Type	Description
string

Properties

DefaultStopSet

Returns a set of default German-stopwords

Declaration

public static CharArraySet DefaultStopSet { get; }

Property Value

Type	Description
CharArraySet	a set of default German-stopwords

Methods

CreateComponents(string, TextReader)

Creates Lucene.Net.Analysis.TokenStreamComponents used to tokenize all the text in the provided TextReader.

Declaration

protected override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)

Parameters

Type	Name	Description
string	fieldName
TextReader	reader

Returns

Type	Description
TokenStreamComponents	Lucene.Net.Analysis.TokenStreamComponents built from a StandardTokenizer filtered with StandardFilter, LowerCaseFilter, StopFilter, SetKeywordMarkerFilter if a stem exclusion set is provided, GermanNormalizationFilter and GermanLightStemFilter

Overrides

Analyzer.CreateComponents(string, TextReader)

Implements

IDisposable