Class LimitTokenCountAnalyzer

  • All Implemented Interfaces:
    Closeable, AutoCloseable

    public final class LimitTokenCountAnalyzer
    extends Analyzer
    This Analyzer limits the number of tokens while indexing. It is a replacement for the maximum field length setting inside IndexWriter.
    • Constructor Detail

      • LimitTokenCountAnalyzer

        public LimitTokenCountAnalyzer​(Analyzer delegate,
                                       int maxTokenCount)
        Build an analyzer that limits the maximum number of tokens per field.
    • Method Detail

      • tokenStream

        public TokenStream tokenStream​(String fieldName,
                                       Reader reader)
        Description copied from class: Analyzer
        Creates a TokenStream which tokenizes all the text in the provided Reader. Must be able to handle null field name for backward compatibility.
        Specified by:
        tokenStream in class Analyzer
      • reusableTokenStream

        public TokenStream reusableTokenStream​(String fieldName,
                                               Reader reader)
                                        throws IOException
        Description copied from class: Analyzer
        Creates a TokenStream that is allowed to be re-used from the previous time that the same thread called this method. Callers that do not need to use more than one TokenStream at the same time from this analyzer should use this method for better performance.
        Overrides:
        reusableTokenStream in class Analyzer
        Throws:
        IOException
      • getPositionIncrementGap

        public int getPositionIncrementGap​(String fieldName)
        Description copied from class: Analyzer
        Invoked before indexing a Fieldable instance if terms have already been added to that field. This allows custom analyzers to place an automatic position increment gap between Fieldable instances using the same field name. The default value position increment gap is 0. With a 0 position increment gap and the typical default token position increment of 1, all terms in a field, including across Fieldable instances, are in successive positions, allowing exact PhraseQuery matches, for instance, across Fieldable instance boundaries.
        Overrides:
        getPositionIncrementGap in class Analyzer
        Parameters:
        fieldName - Fieldable name being indexed.
        Returns:
        position increment gap, added to the next token emitted from Analyzer.tokenStream(String,Reader)