1 package SQL::Abstract::ExtraClauses;
5 use if $] < '5.010', 'MRO::Compat';
7 use base qw(SQL::Abstract::Clauses);
9 BEGIN { *puke = \&SQL::Abstract::puke }
12 my ($proto, @args) = @_;
13 my $new = $proto->next::method(@args);
14 $new->{clauses_of}{select} = [
15 @{$new->{clauses_of}{select}}, qw(group_by having)
17 $new->{expand_clause}{'select.group_by'} = sub {
18 $_[0]->_expand_maybe_list_expr($_[1], -ident)
20 $new->{expand_clause}{'select.having'} = sub {
21 $_[0]->expand_expr($_[1])
23 $new->{expand}{from_list} = '_expand_from_list';
24 $new->{render}{from_list} = '_render_from_list';
25 $new->{expand}{join} = '_expand_join';
26 $new->{render}{join} = '_render_join';
30 sub _expand_select_clause_from {
31 my ($self, $from) = @_;
32 +(from => $self->_expand_from_list(undef, $from));
35 sub _expand_from_list {
36 my ($self, undef, $args) = @_;
37 if (ref($args) eq 'HASH') {
38 return { -from_list => [ $self->expand_expr($args) ] };
41 my @args = ref($args) ? @$args : ($args);
42 while (my $entry = shift @args) {
43 if (!ref($entry) and $entry =~ /^-/) {
44 $entry = { $entry => shift @args };
46 my $aqt = $self->expand_expr($entry, -ident);
47 if ($aqt->{-join} and not $aqt->{-join}{from}) {
48 $aqt->{-join}{from} = pop @list;
52 return { -from_list => \@list };
56 my ($self, undef, $args) = @_;
60 : (to => $args->[0], @{$args}[1..$#$args])
62 my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)),
64 return +{ -join => \%ret };
67 sub _render_from_list {
68 my ($self, $list) = @_;
69 return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list);
73 my ($self, $args) = @_;
76 [ $self->render_aqt($args->{from}) ],
79 ? join(' ', split '_', $args->{type}).' '
85 [ $self->render_aqt($args->{to}) ],
87 [ $self->_sqlcase('on') ],
88 [ $self->render_aqt($args->{on}) ],
91 [ $self->_sqlcase('using') ],
92 [ $self->render_aqt($args->{using}) ],
95 return $self->_join_parts(' ', @parts);