Commit | Line | Data |
f8392f56 |
1 | package SQL::Abstract::ExtraClauses; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use if $] < '5.010', 'MRO::Compat'; |
6 | use mro 'c3'; |
7 | use base qw(SQL::Abstract::Clauses); |
8 | |
9 | BEGIN { *puke = \&SQL::Abstract::puke } |
10 | |
c53ad93e |
11 | sub register_defaults { |
12 | my $self = shift; |
13 | $self->next::method(@_); |
14 | $self->clauses_of( |
15 | select => $self->clauses_of('select'), qw(group_by having) |
16 | ); |
71c1b4d5 |
17 | $self->clause_expanders( |
18 | 'select.group_by', sub { |
19 | $_[0]->_expand_maybe_list_expr($_[1], -ident) |
20 | }, |
21 | 'select.having', 'expand_expr', |
22 | ); |
01dfea60 |
23 | foreach my $thing (qw(join from_list)) { |
24 | $self->expander($thing => "_expand_${thing}") |
25 | ->renderer($thing => "_render_${thing}") |
26 | } |
5d6fafbe |
27 | $self->op_expander(as => '_expand_op_as'); |
28 | $self->expander(as => '_expand_op_as'); |
29 | $self->renderer(as => '_render_as'); |
71c1b4d5 |
30 | |
e6b86bee |
31 | $self->clauses_of(update => sub { |
32 | my ($self, @clauses) = @_; |
33 | splice(@clauses, 2, 0, 'from'); |
34 | @clauses; |
35 | }); |
36 | |
37 | $self->clauses_of(delete => sub { |
38 | my ($self, @clauses) = @_; |
39 | splice(@clauses, 1, 0, 'using'); |
40 | @clauses; |
41 | }); |
42 | |
71c1b4d5 |
43 | $self->clause_expanders( |
44 | 'update.from' => '_expand_select_clause_from', |
45 | 'delete.using' => sub { |
46 | +(using => $_[0]->_expand_from_list(undef, $_[1])); |
47 | }, |
48 | 'insert.rowvalues' => sub { |
49 | +(from => $_[0]->expand_expr({ -values => $_[1] })); |
50 | }, |
51 | 'insert.select' => sub { |
52 | +(from => $_[0]->expand_expr({ -select => $_[1] })); |
53 | }, |
54 | ); |
37b399a8 |
55 | |
56 | $self->renderer(keyword => sub { |
57 | $_[0]->_sqlcase(join ' ', split '_', $_[1]); |
58 | }); |
c53ad93e |
59 | return $self; |
f8392f56 |
60 | } |
61 | |
f79455dc |
62 | sub _expand_select_clause_from { |
63 | my ($self, $from) = @_; |
64 | +(from => $self->_expand_from_list(undef, $from)); |
65 | } |
66 | |
67 | sub _expand_from_list { |
68 | my ($self, undef, $args) = @_; |
69 | if (ref($args) eq 'HASH') { |
70 | return { -from_list => [ $self->expand_expr($args) ] }; |
71 | } |
72 | my @list; |
b9e35873 |
73 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
f79455dc |
74 | while (my $entry = shift @args) { |
6990b2aa |
75 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
76 | if ($1 eq 'as') { |
77 | $list[-1] = $self->expand_expr({ -as => [ |
78 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
79 | ]}); |
80 | next; |
81 | } |
f79455dc |
82 | $entry = { $entry => shift @args }; |
83 | } |
84 | my $aqt = $self->expand_expr($entry, -ident); |
85 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
86 | $aqt->{-join}{from} = pop @list; |
87 | } |
88 | push @list, $aqt; |
89 | } |
90 | return { -from_list => \@list }; |
91 | } |
92 | |
93 | sub _expand_join { |
94 | my ($self, undef, $args) = @_; |
95 | my %proto = ( |
96 | ref($args) eq 'HASH' |
97 | ? %$args |
98 | : (to => $args->[0], @{$args}[1..$#$args]) |
99 | ); |
6990b2aa |
100 | if (my $as = delete $proto{as}) { |
101 | $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] }; |
102 | } |
0891ae97 |
103 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
104 | $proto{using} = { -row => [ |
105 | map [ $self->expand_expr($_, -ident) ], |
106 | ref($using) eq 'ARRAY' ? @$using: $using |
107 | ] }; |
108 | } |
f79455dc |
109 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
110 | sort keys %proto; |
111 | return +{ -join => \%ret }; |
112 | } |
113 | |
114 | sub _render_from_list { |
115 | my ($self, $list) = @_; |
116 | return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list); |
117 | } |
118 | |
119 | sub _render_join { |
120 | my ($self, $args) = @_; |
121 | |
122 | my @parts = ( |
123 | [ $self->render_aqt($args->{from}) ], |
37b399a8 |
124 | [ $self->render_aqt( |
125 | { -keyword => join '_', ($args->{type}||()), 'join' } |
126 | ) ], |
76aa8b0d |
127 | [ $self->render_aqt( |
0891ae97 |
128 | map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to} |
76aa8b0d |
129 | ) ], |
f79455dc |
130 | ($args->{on} ? ( |
37b399a8 |
131 | [ $self->render_aqt({ -keyword => 'on' }) ], |
f79455dc |
132 | [ $self->render_aqt($args->{on}) ], |
133 | ) : ()), |
134 | ($args->{using} ? ( |
37b399a8 |
135 | [ $self->render_aqt({ -keyword => 'using' }) ], |
f79455dc |
136 | [ $self->render_aqt($args->{using}) ], |
137 | ) : ()), |
138 | ); |
139 | return $self->_join_parts(' ', @parts); |
140 | } |
141 | |
6990b2aa |
142 | sub _expand_op_as { |
143 | my ($self, undef, $vv, $k) = @_; |
144 | my @as = map $self->expand_expr($_, -ident), |
145 | (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv; |
146 | return { -as => \@as }; |
147 | } |
148 | |
149 | sub _render_as { |
150 | my ($self, $args) = @_; |
151 | my ($thing, $as, @cols) = @$args; |
152 | return $self->_join_parts( |
153 | ' ', |
434c40f1 |
154 | [ $self->render_aqt($thing) ], |
37b399a8 |
155 | [ $self->render_aqt({ -keyword => 'as' }) ], |
76aa8b0d |
156 | (@cols |
157 | ? [ $self->_join_parts('', |
158 | [ $self->render_aqt($as) ], |
159 | [ '(' ], |
160 | [ $self->_join_parts( |
161 | ', ', |
162 | map [ $self->render_aqt($_) ], @cols |
163 | ) ], |
164 | [ ')' ], |
165 | ) ] |
166 | : [ $self->render_aqt($as) ] |
167 | ), |
6990b2aa |
168 | ); |
169 | } |
170 | |
f8392f56 |
171 | 1; |