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 { |
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21 | $_[0]->expand_expr($_[1]) |
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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'; |
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27 | return $new; |
28 | } |
29 | |
7741b7ad |
30 | sub _expand_select_clause_from { |
31 | my ($self, $from) = @_; |
32 | +(from => $self->_expand_from_list(undef, $from)); |
33 | } |
34 | |
35 | sub _expand_from_list { |
36 | my ($self, undef, $args) = @_; |
37 | if (ref($args) eq 'HASH') { |
38 | return { -from_list => [ $self->expand_expr($args) ] }; |
39 | } |
40 | my @list; |
41 | my @args = ref($args) ? @$args : ($args); |
42 | while (my $entry = shift @args) { |
43 | if (!ref($entry) and $entry =~ /^-/) { |
44 | $entry = { $entry => shift @args }; |
45 | } |
46 | my $aqt = $self->expand_expr($entry, -ident); |
47 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
48 | $aqt->{-join}{from} = pop @list; |
49 | } |
50 | push @list, $aqt; |
51 | } |
52 | return { -from_list => \@list }; |
53 | } |
54 | |
55 | sub _expand_join { |
56 | my ($self, undef, $args) = @_; |
57 | my %proto = ( |
58 | ref($args) eq 'HASH' |
59 | ? %$args |
60 | : (to => $args->[0], @{$args}[1..$#$args]) |
61 | ); |
62 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
63 | sort keys %proto; |
64 | return +{ -join => \%ret }; |
65 | } |
66 | |
67 | sub _render_from_list { |
68 | my ($self, $list) = @_; |
69 | return $self->_join_parts(', ', map [ $self->render_aqt($_) ], @$list); |
70 | } |
71 | |
72 | sub _render_join { |
73 | my ($self, $args) = @_; |
74 | |
75 | my @parts = ( |
76 | [ $self->render_aqt($args->{from}) ], |
77 | [ $self->_sqlcase( |
78 | ($args->{type} |
79 | ? join(' ', split '_', $args->{type}).' ' |
80 | : '' |
81 | ) |
82 | .'join' |
83 | ) |
84 | ], |
85 | [ $self->render_aqt($args->{to}) ], |
86 | ($args->{on} ? ( |
87 | [ $self->_sqlcase('on') ], |
88 | [ $self->render_aqt($args->{on}) ], |
89 | ) : ()), |
90 | ($args->{using} ? ( |
91 | [ $self->_sqlcase('using') ], |
92 | [ $self->render_aqt($args->{using}) ], |
93 | ) : ()), |
94 | ); |
95 | return $self->_join_parts(' ', @parts); |
96 | } |
97 | |
1ff9018c |
98 | 1; |