$self->_expand_maybe_list_expr( [
map {
my ($k, $set) = @$_;
+ $set = { -bind => $_ } unless defined $set;
+{ -op => [ '=', { -ident => $k }, $set ] };
}
map {
sub _select_fields {
my ($self, $fields) = @_;
+ return $fields unless ref($fields);
return $self->_render_expr(
$self->_expand_maybe_list_expr($fields, undef, '-ident')
);
# ORDER BY
#======================================================================
-sub _order_by {
+sub _expand_order_by {
my ($self, $arg) = @_;
- return '' unless defined($arg) and not (ref($arg) eq 'ARRAY' and !@$arg);
+ return unless defined($arg) and not (ref($arg) eq 'ARRAY' and !@$arg);
my $expander = sub {
my ($self, $dir, $expr) = @_;
+ my @to_expand = ref($expr) eq 'ARRAY' ? @$expr : $expr;
+ foreach my $arg (@to_expand) {
+ if (
+ ref($arg) eq 'HASH'
+ and keys %$arg > 1
+ and grep /^-(asc|desc)$/, keys %$arg
+ ) {
+ puke "ordering direction hash passed to order by must have exactly one key (-asc or -desc)";
+ }
+ }
my @exp = map +(defined($dir) ? { -op => [ $dir => $_ ] } : $_),
- map $self->_expand_expr($_, undef, -ident),
- ref($expr) eq 'ARRAY' ? @$expr : $expr;
+ map $self->_expand_expr($_, undef, -ident), @to_expand;
return (@exp > 1 ? { -op => [ ',', @exp ] } : $exp[0]);
};
sub { shift->$expander(desc => @_) },
);
- my $expanded = $self->$expander(undef, $arg);
+ return $self->$expander(undef, $arg);
+}
+
+sub _order_by {
+ my ($self, $arg) = @_;
+
+ return '' unless defined(my $expanded = $self->_expand_order_by($arg));
my ($sql, @bind) = $self->_render_expr($expanded);
return wantarray ? ($final_sql, @bind) : $final_sql;
}
+sub _order_by_chunks {
+ my ($self, $arg) = @_;
+
+ return () unless defined(my $expanded = $self->_expand_order_by($arg));
+
+ for ($expanded) {
+ if (ref() eq 'HASH' and my $op = $_->{-op}) {
+ if ($op->[0] eq ',') {
+ return map [ $self->_render_expr($_) ], @{$op}[1..$#$op];
+ }
+ }
+ return [ $self->_render_expr($_) ];
+ }
+}
+
#======================================================================
# DATASOURCE (FOR NOW, JUST PLAIN TABLE OR LIST OF TABLES)
#======================================================================