Commit | Line | Data |
1ff9018c |
1 | package SQL::Abstract::ExtraClauses; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use if $] < '5.010', 'MRO::Compat'; |
6 | use mro 'c3'; |
7 | use base qw(SQL::Abstract::Clauses); |
8 | |
9 | BEGIN { *puke = \&SQL::Abstract::puke } |
10 | |
11 | sub new { |
12 | my ($proto, @args) = @_; |
13 | my $new = $proto->next::method(@args); |
14 | $new->{clauses_of}{select} = [ |
15 | @{$new->{clauses_of}{select}}, qw(group_by having) |
16 | ]; |
17 | $new->{expand_clause}{'select.group_by'} = sub { |
18 | $_[0]->_expand_maybe_list_expr($_[1], -ident) |
19 | }; |
20 | $new->{expand_clause}{'select.having'} = sub { |
7741b7ad |
21 | $_[0]->expand_expr($_[1]) |
1ff9018c |
22 | }; |
7741b7ad |
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'; |
b99e9a14 |
27 | $new->{expand_op}{as} = '_expand_op_as'; |
28 | $new->{expand}{as} = '_expand_op_as'; |
29 | $new->{render}{as} = '_render_as'; |
e0eb8d26 |
30 | splice(@{$new->{clauses_of}{update}}, 2, 0, 'from'); |
31 | splice(@{$new->{clauses_of}{delete}}, 1, 0, 'using'); |
32 | $new->{expand_clause}{'update.from'} = '_expand_select_clause_from'; |
33 | $new->{expand_clause}{'delete.using'} = sub { |
34 | +(using => $_[0]->_expand_from_list(undef, $_[1])); |
35 | }; |
1ff9018c |
36 | return $new; |
37 | } |
38 | |
7741b7ad |
39 | sub _expand_select_clause_from { |
40 | my ($self, $from) = @_; |
41 | +(from => $self->_expand_from_list(undef, $from)); |
42 | } |
43 | |
44 | sub _expand_from_list { |
45 | my ($self, undef, $args) = @_; |
46 | if (ref($args) eq 'HASH') { |
47 | return { -from_list => [ $self->expand_expr($args) ] }; |
48 | } |
49 | my @list; |
50 | my @args = ref($args) ? @$args : ($args); |
51 | while (my $entry = shift @args) { |
b99e9a14 |
52 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
53 | if ($1 eq 'as') { |
54 | $list[-1] = $self->expand_expr({ -as => [ |
55 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
56 | ]}); |
57 | next; |
58 | } |
7741b7ad |
59 | $entry = { $entry => shift @args }; |
60 | } |
61 | my $aqt = $self->expand_expr($entry, -ident); |
62 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
63 | $aqt->{-join}{from} = pop @list; |
64 | } |
65 | push @list, $aqt; |
66 | } |
67 | return { -from_list => \@list }; |
68 | } |
69 | |
70 | sub _expand_join { |
71 | my ($self, undef, $args) = @_; |
72 | my %proto = ( |
73 | ref($args) eq 'HASH' |
74 | ? %$args |
75 | : (to => $args->[0], @{$args}[1..$#$args]) |
76 | ); |
b99e9a14 |
77 | if (my $as = delete $proto{as}) { |
78 | $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] }; |
79 | } |
e0eb8d26 |
80 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
81 | $proto{using} = { -row => [ |
82 | map [ $self->expand_expr($_, -ident) ], |
83 | ref($using) eq 'ARRAY' ? @$using: $using |
84 | ] }; |
85 | } |
7741b7ad |
86 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
87 | sort keys %proto; |
88 | return +{ -join => \%ret }; |
89 | } |
90 | |
91 | sub _render_from_list { |
92 | my ($self, $list) = @_; |
93 | return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list); |
94 | } |
95 | |
96 | sub _render_join { |
97 | my ($self, $args) = @_; |
98 | |
99 | my @parts = ( |
100 | [ $self->render_aqt($args->{from}) ], |
101 | [ $self->_sqlcase( |
102 | ($args->{type} |
103 | ? join(' ', split '_', $args->{type}).' ' |
104 | : '' |
105 | ) |
106 | .'join' |
107 | ) |
108 | ], |
4a2c263b |
109 | [ $self->render_aqt( |
e0eb8d26 |
110 | map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to} |
4a2c263b |
111 | ) ], |
7741b7ad |
112 | ($args->{on} ? ( |
113 | [ $self->_sqlcase('on') ], |
114 | [ $self->render_aqt($args->{on}) ], |
115 | ) : ()), |
116 | ($args->{using} ? ( |
117 | [ $self->_sqlcase('using') ], |
118 | [ $self->render_aqt($args->{using}) ], |
119 | ) : ()), |
120 | ); |
121 | return $self->_join_parts(' ', @parts); |
122 | } |
123 | |
b99e9a14 |
124 | sub _expand_op_as { |
125 | my ($self, undef, $vv, $k) = @_; |
126 | my @as = map $self->expand_expr($_, -ident), |
127 | (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv; |
128 | return { -as => \@as }; |
129 | } |
130 | |
131 | sub _render_as { |
132 | my ($self, $args) = @_; |
133 | my ($thing, $as, @cols) = @$args; |
134 | return $self->_join_parts( |
135 | ' ', |
4a2c263b |
136 | [ $self->render_aqt( |
137 | map +($_->{-ident} ? $_ : { -row => [ $_ ] }), $thing |
138 | ) ], |
b99e9a14 |
139 | [ $self->_sqlcase('as') ], |
4a2c263b |
140 | (@cols |
141 | ? [ $self->_join_parts('', |
142 | [ $self->render_aqt($as) ], |
143 | [ '(' ], |
144 | [ $self->_join_parts( |
145 | ', ', |
146 | map [ $self->render_aqt($_) ], @cols |
147 | ) ], |
148 | [ ')' ], |
149 | ) ] |
150 | : [ $self->render_aqt($as) ] |
151 | ), |
b99e9a14 |
152 | ); |
153 | } |
154 | |
1ff9018c |
155 | 1; |