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(@_);
14 my @clauses = $self->clauses_of('select');
16 CLAUSE: foreach my $idx (0..$#clauses) {
17 if ($clauses[$idx] eq 'order_by') {
18 @before_setop = @clauses[0..$idx-1];
19 splice(@clauses, $idx, 0, qw(setop group_by having));
23 die "Huh?" unless @before_setop;
24 $self->clauses_of(select => 'with', @clauses);
25 $self->clause_expanders(
26 'select.group_by', sub {
27 $_[0]->_expand_maybe_list_expr($_[2], -ident)
29 'select.having', sub { $_[0]->expand_expr($_[2]) },
31 foreach my $thing (qw(join from_list)) {
32 $self->expander($thing => "_expand_${thing}")
33 ->renderer($thing => "_render_${thing}")
35 $self->op_expander(as => '_expand_op_as');
36 $self->expander(as => '_expand_op_as');
37 $self->renderer(as => '_render_as');
39 $self->clauses_of(update => sub {
40 my ($self, @clauses) = @_;
41 splice(@clauses, 2, 0, 'from');
45 $self->clauses_of(delete => sub {
46 my ($self, @clauses) = @_;
47 splice(@clauses, 1, 0, 'using');
51 $self->clause_expanders(
52 'update.from' => '_expand_select_clause_from',
53 'delete.using' => sub {
54 +(using => $_[0]->_expand_from_list(undef, $_[2]));
56 'insert.rowvalues' => sub {
57 +(from => $_[0]->expand_expr({ -values => $_[2] }));
59 'insert.select' => sub {
60 +(from => $_[0]->expand_expr({ -select => $_[2] }));
65 $self->wrap_expander(select => sub {
69 my $exp = $self->$orig(@_);
70 return $exp unless my $setop = (my $sel = $exp->{-select})->{setop};
71 if (my @keys = grep $sel->{$_}, @before_setop) {
72 my %inner; @inner{@keys} = delete @{$sel}{@keys};
73 unshift @{(values(%$setop))[0]{queries}},
74 { -select => \%inner };
79 my $expand_setop = sub {
80 my ($self, $setop, $args) = @_;
83 queries => [ map $self->expand_expr($_), @{$args->{queries}} ],
86 $self->expanders(map +($_ => $expand_setop), qw(union intersect except));
88 $self->clause_renderer('select.setop' => sub {
89 my ($self, undef, $setop) = @_;
90 $self->render_aqt($setop);
93 $self->renderer($_ => sub {
94 my ($self, $setop, $args) = @_;
95 $self->join_query_parts(
96 ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ',
99 }) for qw(union intersect except);
101 my $setop_expander = sub {
102 my ($self, $setop, $args) = @_;
103 my ($op, $type) = split '_', $setop;
104 +(setop => $self->expand_expr({
106 ($type ? (type => $type) : ()),
107 queries => (ref($args) eq 'ARRAY' ? $args : [ $args ])
112 $self->clause_expanders(
113 map +($_ => $setop_expander),
115 map +($_, "${_}_all", "${_}_distinct"),
116 qw(union intersect except)
119 my $expand_alias = sub {
120 my ($self, $to_expand) = @_;
121 [ map $self->expand_expr($_, -ident),
122 ref($to_expand) eq 'ARRAY'
127 $self->clause_expander('select.with' => my $with_expander = sub {
128 my ($self, $name, $with) = @_;
129 my (undef, $type) = split '_', $name;
130 if (ref($with) eq 'HASH') {
135 $self->$expand_alias($_->[0]),
136 $self->expand_expr($_->[1]),
137 ], @{$with->{queries}}
143 while (my ($alias, $query) = splice @with, 0, 2) {
145 $self->$expand_alias($alias),
146 $self->expand_expr($query)
149 return +(with => { ($type ? (type => $type) : ()), queries => \@exp });
151 $self->clause_expander('select.with_recursive', $with_expander);
152 $self->clause_renderer('select.with' => sub {
153 my ($self, undef, $with) = @_;
154 my $q_part = $self->join_query_parts(', ',
156 my ($alias, $query) = @$_;
157 $self->join_query_parts(' ',
158 $self->_render_alias($alias),
159 $self->format_keyword('as'),
162 } @{$with->{queries}}
164 return $self->join_query_parts(' ',
165 $self->format_keyword(join '_', 'with', ($with->{type}||'')),
173 sub _expand_select_clause_from {
174 my ($self, undef, $from) = @_;
175 +(from => $self->_expand_from_list(undef, $from));
178 sub _expand_from_list {
179 my ($self, undef, $args) = @_;
180 if (ref($args) eq 'HASH') {
181 return $args if $args->{-from_list};
182 return { -from_list => [ $self->expand_expr($args) ] };
185 my @args = ref($args) eq 'ARRAY' ? @$args : ($args);
186 while (my $entry = shift @args) {
187 if (!ref($entry) and $entry =~ /^-(.*)/) {
189 $list[-1] = $self->expand_expr({ -as => [
190 $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args)
194 $entry = { $entry => shift @args };
196 my $aqt = $self->expand_expr($entry, -ident);
197 if ($aqt->{-join} and not $aqt->{-join}{from}) {
198 $aqt->{-join}{from} = pop @list;
202 return { -from_list => \@list };
206 my ($self, undef, $args) = @_;
210 : (to => $args->[0], @{$args}[1..$#$args])
212 if (my $as = delete $proto{as}) {
213 $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] };
215 if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') {
216 $proto{using} = { -row => [
217 map [ $self->expand_expr($_, -ident) ],
218 ref($using) eq 'ARRAY' ? @$using: $using
221 my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)),
223 return +{ -join => \%ret };
226 sub _render_from_list {
227 my ($self, undef, $list) = @_;
228 return $self->join_query_parts(', ', @$list);
232 my ($self, undef, $args) = @_;
236 $self->format_keyword(join '_', ($args->{type}||()), 'join'),
237 (map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to}),
239 $self->format_keyword('on') ,
243 $self->format_keyword('using'),
247 return $self->join_query_parts(' ', @parts);
251 my ($self, undef, $vv, $k) = @_;
252 my @as = map $self->expand_expr($_, -ident),
253 (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv;
254 return { -as => \@as };
258 my ($self, undef, $args) = @_;
259 my ($thing, @alias) = @$args;
260 return $self->join_query_parts(
262 $self->render_aqt($thing),
263 $self->format_keyword('as'),
264 $self->_render_alias(\@alias),
269 my ($self, $args) = @_;
270 my ($as, @cols) = @$args;
272 ? $self->join_query_parts('',
275 $self->join_query_parts(
281 : $self->render_aqt($as)
285 sub _expand_update_clause_target {
286 my ($self, undef, $target) = @_;
287 +(target => $self->_expand_from_list(undef, $target));