phpman > perldoc > Plucene::Search::Query(3pm)

NAME
    Plucene::Search::Query - base class for queries

SYNOPSIS
            my $s_query = Plucene::Search::Query::Subclass->new({
                    boost => $boost_factor});

            my $scorer = $s_query->scorer($query, $searcher, $reader);

DESCRIPTION
    This is an abstract base class for queries.

    A query is a specification of the content an properties of the desired documents. Every search
    is done by matching a query against the document index and locating the ones that match the
    query.

    The simplest query specifies a single term (or word) that is to be matched against a single
    field (e.g. 'author') of each of the documents in the index. This kind of query matches any
    document that contains the term in the specified field.

    A more complex queries may contain nested queries with 'and', 'or', 'not' or 'phrase' relations.
    Queries may also contains specification of which document fields to match against the various
    parts of the query (.e.g. 'authors' and 'title') and hints that may effects the ranking of the
    matched documents ('boost' factor).

METHODS
  new
            my $s_query = Plucene::Search::Query::Subclass->new({
                    boost => $boost_factor});

  boost
    Get / set this attribute

  scorer
            my $scorer = $s_query->scorer
                    (Plucene::Search::Query $query, $searcher, $reader);

  prepare
    Does nothing

  sum_squared_weights / normalize  / _scorer
    These must be defined in a subclass