NAME

Lucy::Search::RequiredOptionalQuery - Join results for two Queries, one required, one optional.

SYNOPSIS

            

              
              
my $foo_and_maybe_bar = Lucy::Search::RequiredOptionalQuery->new(
    required_query => $foo_query,
    optional_query => $bar_query,
);
my $hits = $searcher->hits( query => $foo_and_maybe_bar );
...
            
          

DESCRIPTION

RequiredOptionalQuery joins the result sets of one Query which MUST match, and one Query which SHOULD match. When only the required Query matches, its score is passed along; when both match, the scores are summed.

CONSTRUCTORS

new

            

              
              
my $reqopt_query = Lucy::Search::RequiredOptionalQuery->new(
    required_query => $foo_query,    # required
    optional_query => $bar_query,    # required
);
            
          

Create a new RequiredOptionalQuery.

• required_query - Query must must match.

• optional_query - Query which should match.

METHODS

get_required_query

            

              
              
my $retval = $required_optional_query->get_required_query();
            
          

Getter for the required Query.

set_required_query

            

              
              
$required_optional_query->set_required_query($required_query);
            
          

Setter for the required Query.

get_optional_query

            

              
              
my $retval = $required_optional_query->get_optional_query();
            
          

Getter for the optional Query.

set_optional_query

            

              
              
$required_optional_query->set_optional_query($optional_query);
            
          

Setter for the optional Query.

make_compiler

            

              
              
my $retval = $required_optional_query->make_compiler(
    searcher    => $searcher     # required
    boost       => $boost        # required
    subordinate => $subordinate  # default: false
);
            
          

Abstract factory method returning a Compiler derived from this Query.

• searcher - A Searcher.

• boost - A scoring multiplier.

• subordinate - Indicates whether the Query is a subquery (as opposed to a top-level query). If false, the implementation must invoke normalize() on the newly minted Compiler object before returning it.

INHERITANCE

Lucy::Search::RequiredOptionalQuery isa Lucy::Search::PolyQuery isa Lucy::Search::Query isa Clownfish::Obj.