my $attrs = $new_parent_rs->_resolved_attrs;
$new_parent_rs->{attrs}->{$_} = undef for qw(prefetch include_columns +select +as); # prefetch, include_columns, +select, +as cause additional columns to be fetched
+ # If $column can be found in the 'as' list of the parent resultset, use the
+ # corresponding element of its 'select' list (to keep any custom column
+ # definition set up with 'select' or '+select' attrs), otherwise use $column
+ # (to create a new column definition on-the-fly).
my $as_list = $attrs->{as} || [];
my $select_list = $attrs->{select} || [];
my $as_index = List::Util::first { ($as_list->[$_] || "") eq $column } 0..$#$as_list;
-
my $select = defined $as_index ? $select_list->[$as_index] : $column;
my $new = bless { _select => $select, _as => $column, _parent_resultset => $new_parent_rs }, $class;
return $new;
}
+=head2 as_query
+
+=over 4
+
+=item Arguments: none
+
+=item Return Value: \[ $sql, @bind ]
+
+=back
+
+Returns the SQL query and bind vars associated with the invocant.
+
+=cut
+
+sub as_query { return shift->_resultset->as_query }
+
+=head2 as_subselect
+
+=over 4
+
+=item Arguments: none
+
+=item Return Value: \[ $sql, @bind ]
+
+=back
+
+Returns the SQL query and bind vars associated with the invocant.
+
+The SQL will be wrapped in parentheses, ready for use as a subselect.
+
+=cut
+
+sub as_subselect {
+ my $self = shift;
+ my $arr = ${$self->as_query(@_)};
+ $arr->[0] = '( ' . $arr->[0] . ' )';
+ return \$arr;
+}
+
+=head2 as_query
+
+=over 4
+
+=item Arguments: none
+
+=item Return Value: $sql
+
+=back
+
+Returns the SQL query associated with the invocant. All bind vars
+will have been bound using C<< DBI->quote() >>.
+
+=cut
+
+sub as_sql {
+ my $self = shift;
+ my $arr = ${$self->as_query(@_)};
+ my $sql = shift @$arr;
+ my $dbh = $self->_resultset->result_source->schema->storage->dbh;
+ $sql =~ s/\?/$dbh->quote((shift @$arr)->[1])/eg;
+ return $sql
+}
+
=head2 next
=over 4
);
}
-
1;
=head1 AUTHORS