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'; |
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30 | return $new; |
31 | } |
32 | |
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33 | sub _expand_select_clause_from { |
34 | my ($self, $from) = @_; |
35 | +(from => $self->_expand_from_list(undef, $from)); |
36 | } |
37 | |
38 | sub _expand_from_list { |
39 | my ($self, undef, $args) = @_; |
40 | if (ref($args) eq 'HASH') { |
41 | return { -from_list => [ $self->expand_expr($args) ] }; |
42 | } |
43 | my @list; |
44 | my @args = ref($args) ? @$args : ($args); |
45 | while (my $entry = shift @args) { |
b99e9a14 |
46 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
47 | if ($1 eq 'as') { |
48 | $list[-1] = $self->expand_expr({ -as => [ |
49 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
50 | ]}); |
51 | next; |
52 | } |
7741b7ad |
53 | $entry = { $entry => shift @args }; |
54 | } |
55 | my $aqt = $self->expand_expr($entry, -ident); |
56 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
57 | $aqt->{-join}{from} = pop @list; |
58 | } |
59 | push @list, $aqt; |
60 | } |
61 | return { -from_list => \@list }; |
62 | } |
63 | |
64 | sub _expand_join { |
65 | my ($self, undef, $args) = @_; |
66 | my %proto = ( |
67 | ref($args) eq 'HASH' |
68 | ? %$args |
69 | : (to => $args->[0], @{$args}[1..$#$args]) |
70 | ); |
b99e9a14 |
71 | if (my $as = delete $proto{as}) { |
72 | $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] }; |
73 | } |
7741b7ad |
74 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
75 | sort keys %proto; |
76 | return +{ -join => \%ret }; |
77 | } |
78 | |
79 | sub _render_from_list { |
80 | my ($self, $list) = @_; |
81 | return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list); |
82 | } |
83 | |
84 | sub _render_join { |
85 | my ($self, $args) = @_; |
86 | |
87 | my @parts = ( |
88 | [ $self->render_aqt($args->{from}) ], |
89 | [ $self->_sqlcase( |
90 | ($args->{type} |
91 | ? join(' ', split '_', $args->{type}).' ' |
92 | : '' |
93 | ) |
94 | .'join' |
95 | ) |
96 | ], |
97 | [ $self->render_aqt($args->{to}) ], |
98 | ($args->{on} ? ( |
99 | [ $self->_sqlcase('on') ], |
100 | [ $self->render_aqt($args->{on}) ], |
101 | ) : ()), |
102 | ($args->{using} ? ( |
103 | [ $self->_sqlcase('using') ], |
104 | [ $self->render_aqt($args->{using}) ], |
105 | ) : ()), |
106 | ); |
107 | return $self->_join_parts(' ', @parts); |
108 | } |
109 | |
b99e9a14 |
110 | sub _expand_op_as { |
111 | my ($self, undef, $vv, $k) = @_; |
112 | my @as = map $self->expand_expr($_, -ident), |
113 | (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv; |
114 | return { -as => \@as }; |
115 | } |
116 | |
117 | sub _render_as { |
118 | my ($self, $args) = @_; |
119 | my ($thing, $as, @cols) = @$args; |
120 | return $self->_join_parts( |
121 | ' ', |
122 | [ $self->render_aqt($thing) ], |
123 | [ $self->_sqlcase('as') ], |
124 | [ @cols |
125 | ? $self->render_aqt({ -func => [ $as, @cols ] }) |
126 | : $self->render_aqt($as) |
127 | ], |
128 | ); |
129 | } |
130 | |
1ff9018c |
131 | 1; |