Commit | Line | Data |
bbe638af |
1 | package SQL::Abstract::Clauses; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use mro 'c3'; |
6 | use base 'SQL::Abstract'; |
7 | |
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8 | BEGIN { *puke = \&SQL::Abstract::puke } |
9 | |
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10 | sub new { |
11 | shift->next::method(@_)->register_defaults |
12 | } |
13 | |
14 | sub register_defaults { |
15 | my ($self) = @_; |
16 | $self->{clauses_of}{select} = [ qw(select from where order_by) ]; |
17 | $self->{expand}{select} = sub { shift->_expand_statement(@_) }; |
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18 | $self->{render}{select} = sub { shift->_render_statement(select => @_) }; |
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19 | $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_" |
20 | for @{$self->{clauses_of}{select}}; |
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21 | $self->{clauses_of}{update} = [ qw(update set where returning) ]; |
22 | $self->{expand}{update} = sub { shift->_expand_statement(@_) }; |
23 | $self->{render}{update} = sub { shift->_render_statement(update => @_) }; |
24 | $self->{expand_clause}{'update.update'} = sub { |
25 | $_[0]->expand_expr($_[1], -ident) |
26 | }; |
27 | $self->{expand_clause}{'update.set'} = '_expand_update_set_values'; |
28 | $self->{expand_clause}{'update.where'} = 'expand_expr'; |
29 | $self->{expand_clause}{'update.returning'} = sub { |
30 | shift->_expand_maybe_list_expr(@_, -ident); |
31 | }; |
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32 | $self->{clauses_of}{delete} = [ qw(delete_from where returning) ]; |
33 | $self->{expand}{delete} = sub { shift->_expand_statement(@_) }; |
34 | $self->{render}{delete} = sub { shift->_render_statement(delete => @_) }; |
35 | $self->{expand_clause}{'delete.delete_from'} = sub { |
36 | $_[0]->_expand_maybe_list_expr($_[1], -ident) |
37 | }; |
38 | $self->{expand_clause}{'delete.where'} = 'expand_expr'; |
39 | $self->{expand_clause}{'delete.returning'} = sub { |
40 | shift->_expand_maybe_list_expr(@_, -ident); |
41 | }; |
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42 | $self->{clauses_of}{insert} = [ |
43 | 'insert_into', 'fields', 'values', 'returning' |
44 | ]; |
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45 | $self->{expand}{insert} = sub { shift->_expand_statement(@_) }; |
46 | $self->{render}{insert} = sub { shift->_render_statement(insert => @_) }; |
47 | $self->{expand_clause}{'insert.insert_into'} = sub { |
48 | shift->expand_expr(@_, -ident); |
49 | }; |
50 | $self->{expand_clause}{'insert.returning'} = sub { |
51 | shift->_expand_maybe_list_expr(@_, -ident); |
52 | }; |
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53 | $self->{render_clause}{'insert.fields'} = sub { |
54 | return $_[0]->render_aqt({ -row => [ $_[1] ] }); |
55 | }; |
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56 | return $self; |
57 | } |
58 | |
df0f5af9 |
59 | sub _expand_select_clause_select { |
60 | my ($self, $select) = @_; |
61 | +(select => $self->_expand_maybe_list_expr($select, -ident)); |
62 | } |
63 | |
64 | sub _expand_select_clause_from { |
65 | my ($self, $from) = @_; |
66 | +(from => $self->_expand_maybe_list_expr($from, -ident)); |
67 | } |
68 | |
69 | sub _expand_select_clause_where { |
70 | my ($self, $where) = @_; |
71 | +(where => $self->expand_expr($where)); |
72 | } |
73 | |
74 | sub _expand_select_clause_order_by { |
75 | my ($self, $order_by) = @_; |
76 | +(order_by => $self->_expand_order_by($order_by)); |
77 | } |
78 | |
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79 | sub _expand_statement { |
80 | my ($self, $type, $args) = @_; |
81 | my $ec = $self->{expand_clause}; |
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82 | return +{ "-${type}" => +{ |
c79c67d7 |
83 | map { |
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84 | my $val = $args->{$_}; |
85 | if (defined($val) and my $exp = $ec->{"${type}.$_"}) { |
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86 | if ((my (@exp) = $self->$exp($val)) == 1) { |
87 | ($_ => $exp[0]) |
88 | } else { |
89 | @exp |
90 | } |
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91 | } else { |
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92 | ($_ => $val) |
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93 | } |
c79c67d7 |
94 | } sort keys %$args |
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95 | } }; |
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96 | } |
97 | |
98 | sub _render_statement { |
99 | my ($self, $type, $args) = @_; |
100 | my @parts; |
101 | foreach my $clause (@{$self->{clauses_of}{$type}}) { |
102 | next unless my $clause_expr = $args->{$clause}; |
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103 | local $self->{convert_where} = $self->{convert} if $clause eq 'where'; |
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104 | my ($sql) = my @part = do { |
105 | if (my $rdr = $self->{render_clause}{"${type}.${clause}"}) { |
106 | $self->$rdr($clause_expr); |
107 | } else { |
108 | my ($clause_sql, @bind) = $self->render_aqt($clause_expr); |
109 | my $sql = join ' ', |
110 | $self->_sqlcase(join ' ', split '_', $clause), |
111 | $clause_sql; |
112 | ($sql, @bind); |
113 | } |
114 | }; |
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115 | next unless defined($sql) and length($sql); |
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116 | push @parts, \@part; |
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117 | } |
118 | return $self->_join_parts(' ', @parts); |
119 | } |
120 | |
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121 | sub select { |
122 | my ($self, @args) = @_; |
123 | my %clauses; |
124 | @clauses{qw(from select where order_by)} = @args; |
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125 | |
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126 | # This oddity is to literalify since historically SQLA doesn't quote |
8e6988ce |
127 | # a single identifier argument, so we convert it into a literal |
128 | |
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129 | $clauses{select} = { -literal => [ $clauses{select}||'*' ] } |
130 | unless ref($clauses{select}); |
131 | |
81b270e7 |
132 | my ($sql, @bind) = $self->render_expr({ -select => \%clauses }); |
133 | return wantarray ? ($sql, @bind) : $sql; |
134 | } |
135 | |
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136 | sub update { |
137 | my ($self, $table, $set, $where, $options) = @_; |
138 | my %clauses; |
139 | @clauses{qw(update set where)} = ($table, $set, $where); |
140 | puke "Unsupported data type specified to \$sql->update" |
141 | unless ref($clauses{set}) eq 'HASH'; |
142 | @clauses{keys %$options} = values %$options; |
143 | my ($sql, @bind) = $self->render_expr({ -update => \%clauses }); |
144 | return wantarray ? ($sql, @bind) : $sql; |
145 | } |
146 | |
77e8c03d |
147 | sub delete { |
148 | my ($self, $table, $where, $options) = @_; |
149 | my %clauses = (delete_from => $table, where => $where, %{$options||{}}); |
150 | my ($sql, @bind) = $self->render_expr({ -delete => \%clauses }); |
151 | return wantarray ? ($sql, @bind) : $sql; |
152 | } |
153 | |
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154 | sub insert { |
155 | my ($self, $table, $data, $options) = @_; |
156 | my %clauses = (insert_into => $table, %{$options||{}}); |
157 | my ($f_aqt, $v_aqt) = $self->_expand_insert_values($data); |
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158 | $clauses{fields} = $f_aqt if $f_aqt; |
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159 | $clauses{values} = $v_aqt; |
160 | my ($sql, @bind) = $self->render_expr({ -insert => \%clauses }); |
161 | return wantarray ? ($sql, @bind) : $sql; |
162 | } |
163 | |
bbe638af |
164 | 1; |