Commit | Line | Data |
14774be0 |
1 | use MooseX::Declare; |
2 | |
3 | class SQL::Abstract::AST::v1 extends SQL::Abstract { |
4 | |
5 | use Carp qw/croak/; |
6 | use Data::Dump qw/pp/; |
7 | |
8 | use Moose::Util::TypeConstraints; |
cbcfedc1 |
9 | use MooseX::Types::Moose qw/ArrayRef Str Int Ref HashRef/; |
14774be0 |
10 | use MooseX::AttributeHelpers; |
cbcfedc1 |
11 | use SQL::Abstract::Types qw/AST ArrayAST HashAST/; |
14774be0 |
12 | |
13 | clean; |
14 | |
0c371882 |
15 | # set things that are valid in where clauses |
0bf8a8c4 |
16 | override _build_where_dispatch_table { |
17 | return { |
18 | %{super()}, |
19 | -in => $self->can('_in'), |
0c371882 |
20 | -not_in => $self->can('_in'), |
21 | map { +"-$_" => $self->can("_$_") } qw/ |
22 | value |
23 | name |
24 | true |
25 | false |
26 | / |
0bf8a8c4 |
27 | }; |
14774be0 |
28 | } |
29 | |
cbcfedc1 |
30 | method _select(HashAST $ast) { |
14774be0 |
31 | |
32 | } |
33 | |
cbcfedc1 |
34 | method _where(ArrayAST $ast) { |
14774be0 |
35 | my (undef, @clauses) = @$ast; |
36 | |
37 | return 'WHERE ' . $self->_recurse_where(\@clauses); |
38 | } |
39 | |
cbcfedc1 |
40 | method _order_by(ArrayAST $ast) { |
14774be0 |
41 | my (undef, @clauses) = @$ast; |
42 | |
43 | my @output; |
44 | |
45 | for (@clauses) { |
46 | if ($_->[0] =~ /^-(asc|desc)$/) { |
47 | my $o = $1; |
48 | push @output, $self->dispatch($_->[1]) . " " . uc($o); |
49 | next; |
50 | } |
51 | push @output, $self->dispatch($_); |
52 | } |
53 | |
54 | return "ORDER BY " . join(", ", @output); |
55 | } |
56 | |
cbcfedc1 |
57 | method _name(ArrayAST $ast) { |
14774be0 |
58 | my (undef, @names) = @$ast; |
59 | |
60 | my $sep = $self->name_separator; |
61 | |
62 | return $sep->[0] . |
63 | join( $sep->[1] . $sep->[0], @names ) . |
64 | $sep->[1] |
65 | if (@$sep > 1); |
66 | |
67 | return join($sep->[0], @names); |
68 | } |
69 | |
cbcfedc1 |
70 | method _join(HashAST $ast) { |
704c5138 |
71 | |
cbcfedc1 |
72 | my $output = 'JOIN ' . $self->dispatch($ast->{tablespec}); |
73 | |
74 | $output .= exists $ast->{on} |
75 | ? ' ON (' . $self->_recurse_where( $ast->{on} ) |
76 | : ' USING (' .$self->dispatch($ast->{using} || croak "No 'on' or 'join' clause passed to -join"); |
704c5138 |
77 | |
cbcfedc1 |
78 | $output .= ")"; |
79 | return $output; |
704c5138 |
80 | |
14774be0 |
81 | } |
82 | |
cbcfedc1 |
83 | method _list(ArrayAST $ast) { |
14774be0 |
84 | my (undef, @items) = @$ast; |
85 | |
86 | return join( |
87 | $self->list_separator, |
88 | map { $self->dispatch($_) } @items); |
89 | } |
90 | |
cbcfedc1 |
91 | method _alias(ArrayAST $ast) { |
14774be0 |
92 | my (undef, $alias, $as) = @$ast; |
93 | |
94 | return $self->dispatch($alias) . " AS $as"; |
95 | |
96 | } |
97 | |
cbcfedc1 |
98 | method _value(ArrayAST $ast) { |
14774be0 |
99 | my ($undef, $value) = @$ast; |
100 | |
101 | $self->add_bind($value); |
102 | return "?"; |
103 | } |
104 | |
cbcfedc1 |
105 | method _recurse_where(ArrayRef $clauses) { |
14774be0 |
106 | |
107 | my $OP = 'AND'; |
108 | my $prio = $SQL::Abstract::PRIO{and}; |
109 | my $first = $clauses->[0]; |
110 | |
cbcfedc1 |
111 | if (!ref $first) { |
112 | if ($first =~ /^-(and|or)$/) { |
113 | $OP = uc($1); |
114 | $prio = $SQL::Abstract::PRIO{$1}; |
115 | shift @$clauses; |
116 | } else { |
0406569b |
117 | # If first is not a ref, and its not -and or -or, then $clauses |
118 | # contains just a single clause |
cbcfedc1 |
119 | $clauses = [ $clauses ]; |
120 | } |
14774be0 |
121 | } |
122 | |
0bf8a8c4 |
123 | my $dispatch_table = $self->where_dispatch_table; |
124 | |
14774be0 |
125 | my @output; |
126 | foreach (@$clauses) { |
cbcfedc1 |
127 | croak "invalid component in where clause: $_" unless is_ArrayRef($_); |
14774be0 |
128 | my $op = $_->[0]; |
129 | |
0c371882 |
130 | if ($op =~ /^-(and|or)$/) { |
14774be0 |
131 | my $sub_prio = $SQL::Abstract::PRIO{$1}; |
132 | |
133 | if ($sub_prio <= $prio) { |
134 | push @output, $self->_recurse_where($_); |
135 | } else { |
136 | push @output, '(' . $self->_recurse_where($_) . ')'; |
137 | } |
138 | } else { |
0c371882 |
139 | push @output, $self->_where_component($_); |
14774be0 |
140 | } |
141 | } |
142 | |
143 | return join(" $OP ", @output); |
144 | } |
145 | |
cbcfedc1 |
146 | method _where_component(ArrayRef $ast) { |
0c371882 |
147 | my $op = $ast->[0]; |
148 | |
149 | if (my $code = $self->lookup_where_dispatch($op)) { |
150 | |
151 | return $code->($self, $ast); |
152 | |
153 | } |
154 | croak "'$op' is not a valid clause in a where AST" |
155 | if $op =~ /^-/; |
156 | |
157 | croak "'$op' is not a valid operator"; |
158 | |
159 | } |
160 | |
161 | |
cbcfedc1 |
162 | method _binop(ArrayRef $ast) { |
0bf8a8c4 |
163 | my ($op, $lhs, $rhs) = @$ast; |
164 | |
0c371882 |
165 | join (' ', $self->_where_component($lhs), |
0bf8a8c4 |
166 | $self->binop_mapping($op) || croak("Unknown binary operator $op"), |
0c371882 |
167 | $self->_where_component($rhs) |
14774be0 |
168 | ); |
169 | } |
170 | |
cbcfedc1 |
171 | method _in(ArrayAST $ast) { |
0bf8a8c4 |
172 | my ($tag, $field, @values) = @$ast; |
173 | |
174 | my $not = $tag =~ /^-not/ ? " NOT" : ""; |
14774be0 |
175 | |
44cfd1f6 |
176 | return $self->_false if @values == 0; |
0c371882 |
177 | return $self->_where_component($field) . |
0bf8a8c4 |
178 | $not. |
14774be0 |
179 | " IN (" . |
180 | join(", ", map { $self->dispatch($_) } @values ) . |
181 | ")"; |
182 | } |
183 | |
184 | method _generic_func(ArrayRef $ast) { |
185 | } |
186 | |
44cfd1f6 |
187 | # 'constants' that are portable across DBs |
188 | method _false($ast?) { "0 = 1" } |
189 | method _true($ast?) { "1 = 1" } |
190 | |
14774be0 |
191 | } |