Package org.apache.solr.spelling.suggest.fst

Class FuzzyLookupFactory

  • public class FuzzyLookupFactory
extends LookupFactory
    Factory for FuzzySuggester
    WARNING: This API is experimental and might change in incompatible ways in the next release.

    • Field Detail

      • UNICODE_AWARE

        public static final String UNICODE_AWARE
        If true, maxEdits, minFuzzyLength, transpositions and nonFuzzyPrefix will be measured in Unicode code points (actual letters) instead of bytes.
        See Also:
        Constant Field Values

      • MAX_EDITS

        public static final String MAX_EDITS
        Maximum number of edits allowed, used by LevenshteinAutomata.toAutomaton(int) in bytes or Unicode code points (if UNICODE_AWARE option is set to true).
        See Also:
        Constant Field Values

      • TRANSPOSITIONS

        public static final String TRANSPOSITIONS
        If transpositions are allowed, Fuzzy suggestions will be computed based on a primitive edit operation. If it is false, it will be based on the classic Levenshtein algorithm. Transpositions of bytes or Unicode code points (if UNICODE_AWARE option is set to true).
        See Also:
        Constant Field Values

      • NON_FUZZY_PREFIX

        public static final String NON_FUZZY_PREFIX
        Length of common (non-fuzzy) prefix for the suggestions in bytes or Unicode code points (if UNICODE_AWARE option is set to true).
        See Also:
        Constant Field Values

      • MIN_FUZZY_LENGTH

        public static final String MIN_FUZZY_LENGTH
        Minimum length of lookup key before any edits are allowed for the suggestions in bytes or Unicode code points (if UNICODE_AWARE option is set to true).
        See Also:
        Constant Field Values

    • Constructor Detail

      • FuzzyLookupFactory

        public FuzzyLookupFactory()

    • Method Detail

      • create

        public org.apache.lucene.search.suggest.Lookup create​(NamedList<?> params,
                                                      SolrCore core)
        Description copied from class: LookupFactory
        Create a Lookup using config options in params and current core
        Specified by:
        create in class LookupFactory

      • storeFileName

        public String storeFileName()
        Description copied from class: LookupFactory
        Returns the filename in which the in-memory data structure is stored NOTE: not all Lookup implementations store in-memory data structures
        Specified by:
        storeFileName in class LookupFactory