Package ddf.catalog.pubsub.criteria.contextual

Class CaseSensitiveContextualAnalyzer

java.lang.Object
org.apache.lucene.analysis.Analyzer
ddf.catalog.pubsub.criteria.contextual.CaseSensitiveContextualAnalyzer
All Implemented Interfaces:
Closeable, AutoCloseable
public class CaseSensitiveContextualAnalyzer extends org.apache.lucene.analysis.Analyzer
Filters StandardTokenizer with StandardFilter, LowerCaseFilter and StopFilter, using a list of English stop words.

You must specify the required Version compatibility when creating StandardAnalyzer:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    DEFAULT_MAX_TOKEN_LENGTH
    Default maximum allowed token length
    protected static final Set<?>
    STOP_WORDS_SET
    An unmodifiable set containing some common English words that are usually not useful for searching.

    Fields inherited from class org.apache.lucene.analysis.Analyzer

    overridesTokenStreamMethod

  • Constructor Summary

    Constructors
    Constructor
    Description
    CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion)
    Builds an analyzer with the default stop words (STOP_WORDS_SET).
    CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion, File stopwords)
    Builds an analyzer with the stop words from the given file.
    CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion, Reader stopwords)
    Builds an analyzer with the stop words from the given reader.
    CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopWords)
    Builds an analyzer with the given stop words.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getMaxTokenLength()
     
    org.apache.lucene.analysis.TokenStream
    reusableTokenStream(String fieldName, Reader reader)
     
    void
    setMaxTokenLength(int length)
    Set maximum allowed token length.
    org.apache.lucene.analysis.TokenStream
    tokenStream(String fieldName, Reader reader)
    Constructs a StandardTokenizer filtered by a StandardFilter, a LowerCaseFilter and a StopFilter.

    Methods inherited from class org.apache.lucene.analysis.Analyzer

    close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setOverridesTokenStreamMethod, setPreviousTokenStream

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • STOP_WORDS_SET

      protected static final Set<?> STOP_WORDS_SET
      An unmodifiable set containing some common English words that are usually not useful for searching.

    • DEFAULT_MAX_TOKEN_LENGTH

      public static final int DEFAULT_MAX_TOKEN_LENGTH
      Default maximum allowed token length
      See Also:

  • Constructor Details

    • CaseSensitiveContextualAnalyzer

      public CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion)
      Builds an analyzer with the default stop words (STOP_WORDS_SET).
      Parameters:
      matchVersion - Lucene version to match See {@link <a href="#version">above</a>}

    • CaseSensitiveContextualAnalyzer

      public CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopWords)
      Builds an analyzer with the given stop words.
      Parameters:
      matchVersion - Lucene version to match See {@link <a href="#version">above</a>}
      stopWords - stop words

    • CaseSensitiveContextualAnalyzer

      public CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion, File stopwords) throws IOException
      Builds an analyzer with the stop words from the given file.
      Parameters:
      matchVersion - Lucene version to match See {@link <a href="#version">above</a>}
      stopwords - File to read stop words from
      Throws:
      IOException
      See Also:
      • WordlistLoader.getWordSet(File)

    • CaseSensitiveContextualAnalyzer

      public CaseSensitiveContextualAnalyzer(org.apache.lucene.util.Version matchVersion, Reader stopwords) throws IOException
      Builds an analyzer with the stop words from the given reader.
      Parameters:
      matchVersion - Lucene version to match See {@link <a href="#version">above</a>}
      stopwords - Reader to read stop words from
      Throws:
      IOException
      See Also:
      • WordlistLoader.getWordSet(Reader)

  • Method Details

    • tokenStream

      public org.apache.lucene.analysis.TokenStream tokenStream(String fieldName, Reader reader)
      Constructs a StandardTokenizer filtered by a StandardFilter, a LowerCaseFilter and a StopFilter.
      Specified by:
      tokenStream in class org.apache.lucene.analysis.Analyzer

    • getMaxTokenLength

      public int getMaxTokenLength()
      See Also:

    • setMaxTokenLength

      public void setMaxTokenLength(int length)
      Set 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 reusableTokenStream is called.

    • reusableTokenStream

      public org.apache.lucene.analysis.TokenStream reusableTokenStream(String fieldName, Reader reader) throws IOException
      Overrides:
      reusableTokenStream in class org.apache.lucene.analysis.Analyzer
      Throws:
      IOException