Class StemmerOverrideTokenFilter


  • public final class StemmerOverrideTokenFilter
    extends TokenFilter
    Provides the ability to override other stemming filters with custom dictionary-based stemming. Any dictionary-stemmed terms will be marked as keywords so that they will not be stemmed with stemmers down the chain. Must be placed before any stemming filters. This token filter is implemented using Apache Lucene.
    • Constructor Detail

      • StemmerOverrideTokenFilter

        public StemmerOverrideTokenFilter​(String name,
                                          List<String> rules)
        Parameters:
        name - The name of the token filter. It must only contain letters, digits, spaces, dashes or underscores, can only start and end with alphanumeric characters, and is limited to 128 characters.
        rules - A list of stemming rules in the following format: "word =%3E stem", for example: "ran =%3E run".
    • Method Detail

      • getRules

        public List<String> getRules()
        Get the rules property: A list of stemming rules in the following format: "word => stem", for example: "ran => run".
        Returns:
        the rules value.