Interface SpellingParams


  • public interface SpellingParams
    Parameters used for spellchecking
    Since:
    solr 1.3
    • Field Detail

      • SPELLCHECK_DICT

        static final String SPELLCHECK_DICT
        The name of the dictionary to be used for giving the suggestion for a request. The value for this parameter is configured in solrconfig.xml
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      • SPELLCHECK_COUNT

        static final String SPELLCHECK_COUNT
        The count of suggestions to return for each query term not in the index and/or dictionary.

        If this parameter is absent in the request then only one suggestion is returned. If it is more than one then a maximum of given suggestions are returned for each token in the query.

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      • SPELLCHECK_ALTERNATIVE_TERM_COUNT

        static final String SPELLCHECK_ALTERNATIVE_TERM_COUNT
        The count of suggestions to return for each query term existing in the index and/or dictionary.

        If this parameter is absent in the request then no suggestions are generated. This parameter allows for receiving alternative terms to use in context-sensitive spelling corrections.

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      • SPELLCHECK_MAX_RESULTS_FOR_SUGGEST

        static final String SPELLCHECK_MAX_RESULTS_FOR_SUGGEST

        The maximum number of hits the request can return in order to both generate spelling suggestions and set the "correctlySpelled" element to "false". This can be specified either as a whole number number of documents, or it can be expressed as a fractional percentage of documents returned by a chosen filter query. By default, the chosen filter is the most restrictive fq clause. This can be overridden with SPELLCHECK_MAX_RESULTS_FOR_SUGGEST_FQ .

        If left unspecified, the default behavior will prevail. That is, "correctlySpelled" will be false and suggestions will be returned only if one or more of the query terms are absent from the dictionary and/or index. If set to zero, the "correctlySpelled" flag will be false only if the response returns zero hits. If set to a value greater than zero, suggestions will be returned even if hits are returned (up to the specified number). This number also will serve as the threshold in determining the value of "correctlySpelled". Specifying a value greater than zero is useful for creating "did-you-mean" suggestions for queries that return a low number of hits.

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      • SPELLCHECK_MAX_RESULTS_FOR_SUGGEST_FQ

        static final String SPELLCHECK_MAX_RESULTS_FOR_SUGGEST_FQ

        To be used when SPELLCHECK_MAX_RESULTS_FOR_SUGGEST is expressed as a fractional percentage. Specify a filter query whose result count is used to determine the maximum number of documents.

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      • SPELLCHECK_ONLY_MORE_POPULAR

        static final String SPELLCHECK_ONLY_MORE_POPULAR
        When this parameter is set to true and the misspelled word exists in the user field, only words that occur more frequently in the Solr field than the one given will be returned. The default value is false.

        This is applicable only for dictionaries built from Solr fields.

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      • SPELLCHECK_EXTENDED_RESULTS

        static final String SPELLCHECK_EXTENDED_RESULTS
        Whether to use the extended response format, which is more complicated but richer. Returns the document frequency for each suggestion and returns one suggestion block for each term in the query string. Default is false.

        This is applicable only for dictionaries built from Solr fields.

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      • SPELLCHECK_Q

        static final String SPELLCHECK_Q
        Use the value for this parameter as the query to spell check.

        This parameter is optional. If absent, then the q parameter is used.

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      • SPELLCHECK_BUILD

        static final String SPELLCHECK_BUILD
        Whether to build the index or not. Optional and false by default.
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      • SPELLCHECK_RELOAD

        static final String SPELLCHECK_RELOAD
        Whether to reload the index. Optional and false by default.
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      • SPELLCHECK_COLLATE

        static final String SPELLCHECK_COLLATE
        Take the top suggestion for each token and create a new query from it
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      • SPELLCHECK_MAX_COLLATIONS

        static final String SPELLCHECK_MAX_COLLATIONS

        The maximum number of collations to return. Default=1. Ignored if "spellcheck.collate" is false.

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      • SPELLCHECK_MAX_COLLATION_TRIES

        static final String SPELLCHECK_MAX_COLLATION_TRIES

        The maximum number of collations to test by querying against the index. When testing, the collation is substituted for the original query's "q" param. Any "qf"s are retained. If this is set to zero, does not test for hits before returning collations (returned collations may result in zero hits). Default=0. Ignored of "spellcheck.collate" is false.

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      • SPELLCHECK_MAX_COLLATION_EVALUATIONS

        static final String SPELLCHECK_MAX_COLLATION_EVALUATIONS

        The maximum number of word correction combinations to rank and evaluate prior to deciding which collation candidates to test against the index. This is a performance safety-net in cases a user enters a query with many misspelled words. The default is 10,000 combinations.

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      • SPELLCHECK_COLLATE_EXTENDED_RESULTS

        static final String SPELLCHECK_COLLATE_EXTENDED_RESULTS

        Whether to use the Extended Results Format for collations. Includes "before>after" pairs to easily allow clients to generate messages like "no results for PORK. did you mean POLK?" Also indicates the # of hits each collation will return on re-query. Default=false, which retains 1.4-compatible output.

        Note: that if SPELLCHECK_COLLATE_MAX_COLLECT_DOCS is set to a value greater than 0, then the hit counts returned by this will be estimated.

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      • SPELLCHECK_COLLATE_PARAM_OVERRIDE

        static final String SPELLCHECK_COLLATE_PARAM_OVERRIDE

        For use with SPELLCHECK_MAX_COLLATION_TRIES, use this to override any original query parameters when issuing test queries. For instance, if the original query has "mm=1" but it is preferred to test collations with "mm=100%", then use "spellcheck.collateParam.mm=100%".

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      • SPELLCHECK_ACCURACY

        static final String SPELLCHECK_ACCURACY
        Certain spelling implementations may allow for an accuracy setting.
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