Lucy::Search::PolyQuery - Base class for composite Query objects.
sub walk { my $query = shift; if ( $query->isa("Lucy::Search::PolyQuery") ) { if ( $query->isa("Lucy::Search::ORQuery") ) { ... } elsif ( $query->isa("Lucy::Search::ANDQuery") ) { ... } elsif ( $query->isa("Lucy::Search::RequiredOptionalQuery") ) { ... } elsif ( $query->isa("Lucy::Search::NOTQuery") ) { ... } } else { ... } }
PolyQuery serves as a shared base class for ANDQuery, ORQuery, NOTQuery, and RequiredOptionalQuery. All of these classes may serve as nodes in composite Query with a tree structure which may be walked.
Lucy::Search::PolyQuery isa Lucy::Search::Query isa Lucy::Object::Obj.
To install Lucy::Simple, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Lucy::Simple
CPAN shell
perl -MCPAN -e shell install Lucy::Simple
For more information on module installation, please visit the detailed CPAN module installation guide.