table of contents
other versions
Lucy::Search::PolyQuery(3pm) | User Contributed Perl Documentation | Lucy::Search::PolyQuery(3pm) |
NAME¶
Lucy::Search::PolyQuery - Base class for composite Query objects.
SYNOPSIS¶
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 { ... } }
DESCRIPTION¶
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.
INHERITANCE¶
Lucy::Search::PolyQuery isa Lucy::Search::Query isa Lucy::Object::Obj.
2017-08-02 | perl v5.26.0 |