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';
27 $new->{expand_op}{as} = '_expand_op_as';
28 $new->{expand}{as} = '_expand_op_as';
29 $new->{render}{as} = '_render_as';
33 sub _expand_select_clause_from {
34 my ($self, $from) = @_;
35 +(from => $self->_expand_from_list(undef, $from));
38 sub _expand_from_list {
39 my ($self, undef, $args) = @_;
40 if (ref($args) eq 'HASH') {
41 return { -from_list => [ $self->expand_expr($args) ] };
44 my @args = ref($args) ? @$args : ($args);
45 while (my $entry = shift @args) {
46 if (!ref($entry) and $entry =~ /^-(.*)/) {
48 $list[-1] = $self->expand_expr({ -as => [
49 $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args)
53 $entry = { $entry => shift @args };
55 my $aqt = $self->expand_expr($entry, -ident);
56 if ($aqt->{-join} and not $aqt->{-join}{from}) {
57 $aqt->{-join}{from} = pop @list;
61 return { -from_list => \@list };
65 my ($self, undef, $args) = @_;
69 : (to => $args->[0], @{$args}[1..$#$args])
71 if (my $as = delete $proto{as}) {
72 $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] };
74 my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)),
76 return +{ -join => \%ret };
79 sub _render_from_list {
80 my ($self, $list) = @_;
81 return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list);
85 my ($self, $args) = @_;
88 [ $self->render_aqt($args->{from}) ],
91 ? join(' ', split '_', $args->{type}).' '
97 [ $self->render_aqt($args->{to}) ],
99 [ $self->_sqlcase('on') ],
100 [ $self->render_aqt($args->{on}) ],
103 [ $self->_sqlcase('using') ],
104 [ $self->render_aqt($args->{using}) ],
107 return $self->_join_parts(' ', @parts);
111 my ($self, undef, $vv, $k) = @_;
112 my @as = map $self->expand_expr($_, -ident),
113 (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv;
114 return { -as => \@as };
118 my ($self, $args) = @_;
119 my ($thing, $as, @cols) = @$args;
120 return $self->_join_parts(
122 [ $self->render_aqt($thing) ],
123 [ $self->_sqlcase('as') ],
125 ? $self->render_aqt({ -func => [ $as, @cols ] })
126 : $self->render_aqt($as)