Plucene::Search::Query(3pm)				User Contributed Perl Documentation			       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

perl v5.12.4							    2011-08-14					       Plucene::Search::Query(3pm)