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 }
11 sub register_defaults {
13 $self->next::method(@_);
15 select => $self->clauses_of('select'), qw(group_by having)
17 $self->clause_expander('select.group_by', sub {
18 $_[0]->_expand_maybe_list_expr($_[1], -ident)
20 $self->clause_expander('select.having', sub {
21 $_[0]->expand_expr($_[1])
23 $self->${\"${_}er"}(from_list => "_${_}_from_list")
24 for qw(expand render);
25 $self->{expand}{join} = '_expand_join';
26 $self->{render}{join} = '_render_join';
27 $self->{expand_op}{as} = '_expand_op_as';
28 $self->{expand}{as} = '_expand_op_as';
29 $self->{render}{as} = '_render_as';
30 splice(@{$self->{clauses_of}{update}}, 2, 0, 'from');
31 splice(@{$self->{clauses_of}{delete}}, 1, 0, 'using');
32 $self->{expand_clause}{'update.from'} = '_expand_select_clause_from';
33 $self->{expand_clause}{'delete.using'} = sub {
34 +(using => $_[0]->_expand_from_list(undef, $_[1]));
36 $self->{expand_clause}{'insert.rowvalues'} = sub {
37 (from => $_[0]->expand_expr({ -values => $_[1] }));
39 $self->{expand_clause}{'insert.select'} = sub {
40 (from => $_[0]->expand_expr({ -select => $_[1] }));
45 sub _expand_select_clause_from {
46 my ($self, $from) = @_;
47 +(from => $self->_expand_from_list(undef, $from));
50 sub _expand_from_list {
51 my ($self, undef, $args) = @_;
52 if (ref($args) eq 'HASH') {
53 return { -from_list => [ $self->expand_expr($args) ] };
56 my @args = ref($args) eq 'ARRAY' ? @$args : ($args);
57 while (my $entry = shift @args) {
58 if (!ref($entry) and $entry =~ /^-(.*)/) {
60 $list[-1] = $self->expand_expr({ -as => [
61 $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args)
65 $entry = { $entry => shift @args };
67 my $aqt = $self->expand_expr($entry, -ident);
68 if ($aqt->{-join} and not $aqt->{-join}{from}) {
69 $aqt->{-join}{from} = pop @list;
73 return { -from_list => \@list };
77 my ($self, undef, $args) = @_;
81 : (to => $args->[0], @{$args}[1..$#$args])
83 if (my $as = delete $proto{as}) {
84 $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] };
86 if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') {
87 $proto{using} = { -row => [
88 map [ $self->expand_expr($_, -ident) ],
89 ref($using) eq 'ARRAY' ? @$using: $using
92 my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)),
94 return +{ -join => \%ret };
97 sub _render_from_list {
98 my ($self, $list) = @_;
99 return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list);
103 my ($self, $args) = @_;
106 [ $self->render_aqt($args->{from}) ],
109 ? join(' ', split '_', $args->{type}).' '
116 map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to}
119 [ $self->_sqlcase('on') ],
120 [ $self->render_aqt($args->{on}) ],
123 [ $self->_sqlcase('using') ],
124 [ $self->render_aqt($args->{using}) ],
127 return $self->_join_parts(' ', @parts);
131 my ($self, undef, $vv, $k) = @_;
132 my @as = map $self->expand_expr($_, -ident),
133 (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv;
134 return { -as => \@as };
138 my ($self, $args) = @_;
139 my ($thing, $as, @cols) = @$args;
140 return $self->_join_parts(
142 [ $self->render_aqt($thing) ],
143 [ $self->_sqlcase('as') ],
145 ? [ $self->_join_parts('',
146 [ $self->render_aqt($as) ],
148 [ $self->_join_parts(
150 map [ $self->render_aqt($_) ], @cols
154 : [ $self->render_aqt($as) ]