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');
38 $self->expander(alias => sub {
39 my ($self, undef, $args) = @_;
40 if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) {
44 map $self->expand_expr($_, -ident),
45 ref($args) eq 'ARRAY' ? @{$args} : $args
49 $self->renderer(alias => '_render_alias');
51 $self->clauses_of(update => sub {
52 my ($self, @clauses) = @_;
53 splice(@clauses, 2, 0, 'from');
57 $self->clauses_of(delete => sub {
58 my ($self, @clauses) = @_;
59 splice(@clauses, 1, 0, 'using');
63 $self->clause_expanders(
64 'update.from' => '_expand_select_clause_from',
65 'delete.using' => sub {
66 +(using => $_[0]->_expand_from_list(undef, $_[2]));
68 'insert.rowvalues' => sub {
69 +(from => $_[0]->expand_expr({ -values => $_[2] }));
71 'insert.select' => sub {
72 +(from => $_[0]->expand_expr({ -select => $_[2] }));
77 $self->wrap_expander(select => sub {
81 my $exp = $self->$orig(@_);
82 return $exp unless my $setop = (my $sel = $exp->{-select})->{setop};
83 if (my @keys = grep $sel->{$_}, @before_setop) {
84 my %inner; @inner{@keys} = delete @{$sel}{@keys};
85 unshift @{(values(%$setop))[0]{queries}},
86 { -select => \%inner };
91 my $expand_setop = sub {
92 my ($self, $setop, $args) = @_;
95 queries => [ map $self->expand_expr($_), @{$args->{queries}} ],
98 $self->expanders(map +($_ => $expand_setop), qw(union intersect except));
100 $self->clause_renderer('select.setop' => sub {
101 my ($self, undef, $setop) = @_;
102 $self->render_aqt($setop);
105 $self->renderer($_ => sub {
106 my ($self, $setop, $args) = @_;
107 $self->join_query_parts(
108 ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ',
111 }) for qw(union intersect except);
113 my $setop_expander = sub {
114 my ($self, $setop, $args) = @_;
115 my ($op, $type) = split '_', $setop;
116 +(setop => $self->expand_expr({
118 ($type ? (type => $type) : ()),
119 queries => (ref($args) eq 'ARRAY' ? $args : [ $args ])
124 $self->clause_expanders(
125 map +($_ => $setop_expander),
127 map +($_, "${_}_all", "${_}_distinct"),
128 qw(union intersect except)
131 $self->clause_expander('select.with' => my $with_expander = sub {
132 my ($self, $name, $with) = @_;
133 my (undef, $type) = split '_', $name;
134 if (ref($with) eq 'HASH') {
139 $self->expand_expr({ -alias => $_->[0] }, -ident),
140 $self->expand_expr($_->[1]),
141 ], @{$with->{queries}}
147 while (my ($alias, $query) = splice @with, 0, 2) {
149 $self->expand_expr({ -alias => $alias }, -ident),
150 $self->expand_expr($query)
153 return +(with => { ($type ? (type => $type) : ()), queries => \@exp });
155 $self->clause_expander('select.with_recursive', $with_expander);
156 $self->clause_renderer('select.with' => my $with_renderer = sub {
157 my ($self, undef, $with) = @_;
158 my $q_part = $self->join_query_parts(', ',
160 my ($alias, $query) = @$_;
161 $self->join_query_parts(' ',
163 $self->format_keyword('as'),
166 } @{$with->{queries}}
168 return $self->join_query_parts(' ',
169 $self->format_keyword(join '_', 'with', ($with->{type}||'')),
173 foreach my $stmt (qw(insert update delete)) {
174 $self->clauses_of($stmt => 'with', $self->clauses_of($stmt));
175 $self->clause_expander("${stmt}.$_", $with_expander)
176 for qw(with with_recursive);
177 $self->clause_renderer("${stmt}.with", $with_renderer);
183 sub _expand_select_clause_from {
184 my ($self, undef, $from) = @_;
185 +(from => $self->_expand_from_list(undef, $from));
188 sub _expand_from_list {
189 my ($self, undef, $args) = @_;
190 if (ref($args) eq 'HASH') {
191 return $args if $args->{-from_list};
192 return { -from_list => [ $self->expand_expr($args) ] };
195 my @args = ref($args) eq 'ARRAY' ? @$args : ($args);
196 while (my $entry = shift @args) {
197 if (!ref($entry) and $entry =~ /^-(.*)/) {
199 $list[-1] = $self->expand_expr({ -as => [
200 $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args)
204 $entry = { $entry => shift @args };
206 my $aqt = $self->expand_expr($entry, -ident);
207 if ($aqt->{-join} and not $aqt->{-join}{from}) {
208 $aqt->{-join}{from} = pop @list;
212 return { -from_list => \@list };
216 my ($self, undef, $args) = @_;
220 : (to => $args->[0], @{$args}[1..$#$args])
222 if (my $as = delete $proto{as}) {
223 $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] });
225 if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') {
227 map [ $self->expand_expr($_, -ident) ],
228 ref($using) eq 'ARRAY' ? @$using: $using
231 my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)),
233 return +{ -join => \%ret };
236 sub _render_from_list {
237 my ($self, undef, $list) = @_;
238 return $self->join_query_parts(', ', @$list);
242 my ($self, undef, $args) = @_;
246 $self->format_keyword(join '_', ($args->{type}||()), 'join'),
247 (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}),
249 $self->format_keyword('on') ,
253 $self->format_keyword('using'),
254 '(', $args->{using}, ')',
257 return $self->join_query_parts(' ', @parts);
261 my ($self, undef, $vv, $k) = @_;
262 my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv);
264 my $ik = $self->expand_expr($k, -ident);
265 return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] }
266 if @vv == 1 and ref($vv[0]) eq 'HASH';
268 my @as = map $self->expand_expr($_, -ident), @vv;
269 return { -as => [ $ik, { -alias => \@as } ] };
273 my ($self, undef, $args) = @_;
274 my ($thing, $alias) = @$args;
275 return $self->join_query_parts(
278 $self->format_keyword('as'),
284 my ($self, undef, $args) = @_;
285 my ($as, @cols) = @$args;
287 ? $self->join_query_parts('',
290 $self->join_query_parts(
296 : $self->render_aqt($as)
300 sub _expand_update_clause_target {
301 my ($self, undef, $target) = @_;
302 +(target => $self->_expand_from_list(undef, $target));