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    SolrDisMaxQuery::setBoostFunction

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    SolrDisMaxQuery::setBoostFunction — Sets a Boost Function (bf parameter)

    説明

    public SolrDisMaxQuery::setBoostFunction(string $function): SolrDisMaxQuery

    Sets Boost Function (bf parameter).

    Functions (with optional boosts) that will be included in the user's query to influence the score. Any function supported natively by Solr can be used, along with a boost value. e.g.:

    recip(rord(myfield),1,2,3)^1.5

    パラメータ

    function

    戻り値

    SolrDisMaxQuery

    例

    例1 SolrDisMaxQuery::setBoostFunction() example

    <?php

    $dismaxQuery     = new SolrDisMaxQuery('lucene');

    $boostRecentDocsFunction = "recip(ms(NOW,mydatefield),3.16e-11,1,1)";
    $dismaxQuery->setBoostFunction($boostRecentDocsFunction);

    echo     $dismaxQuery.PHP_EOL;

    ?>

    上の例の出力は、 たとえば以下のようになります。

    q=lucene&defType=edismax&bf=recip(ms(NOW,mydatefield),3.16e-11,1,1)

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