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996be9ee |
1 | package DBIx::Class::Schema::Loader::DBI::mysql; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use base 'DBIx::Class::Schema::Loader::DBI'; |
fa994d3c |
6 | use Carp::Clan qw/^DBIx::Class/; |
996be9ee |
7 | use Class::C3; |
8 | |
9990e58f |
9 | our $VERSION = '0.07000'; |
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10 | |
996be9ee |
11 | =head1 NAME |
12 | |
13 | DBIx::Class::Schema::Loader::DBI::mysql - DBIx::Class::Schema::Loader::DBI mysql Implementation. |
14 | |
15 | =head1 SYNOPSIS |
16 | |
17 | package My::Schema; |
18 | use base qw/DBIx::Class::Schema::Loader/; |
19 | |
59cfa251 |
20 | __PACKAGE__->loader_options( debug => 1 ); |
996be9ee |
21 | |
22 | 1; |
23 | |
24 | =head1 DESCRIPTION |
25 | |
26 | See L<DBIx::Class::Schema::Loader::Base>. |
27 | |
28 | =cut |
29 | |
bc1cb85e |
30 | sub _setup { |
31 | my $self = shift; |
32 | |
33 | $self->next::method(@_); |
34 | |
35 | if (not defined $self->preserve_case) { |
36 | $self->preserve_case(0); |
37 | } |
38 | } |
39 | |
518472fa |
40 | sub _tables_list { |
bfb43060 |
41 | my ($self, $opts) = @_; |
518472fa |
42 | |
bfb43060 |
43 | return $self->next::method($opts, undef, undef); |
518472fa |
44 | } |
45 | |
996be9ee |
46 | sub _table_fk_info { |
47 | my ($self, $table) = @_; |
48 | |
5223f24a |
49 | my $dbh = $self->schema->storage->dbh; |
3de915bc |
50 | |
3de915bc |
51 | my $table_def_ref = eval { $dbh->selectrow_arrayref("SHOW CREATE TABLE `$table`") }; |
52 | my $table_def = $table_def_ref->[1]; |
53 | |
54 | return [] if not $table_def; |
309e2aa1 |
55 | |
56 | my $qt = qr/["`]/; |
57 | |
58 | my (@reldata) = ($table_def =~ |
59 | /CONSTRAINT $qt.*$qt FOREIGN KEY \($qt(.*)$qt\) REFERENCES $qt(.*)$qt \($qt(.*)$qt\)/ig |
60 | ); |
996be9ee |
61 | |
62 | my @rels; |
63 | while (scalar @reldata > 0) { |
64 | my $cols = shift @reldata; |
65 | my $f_table = shift @reldata; |
66 | my $f_cols = shift @reldata; |
67 | |
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68 | my @cols = map { s/(?: \Q$self->{_quoter}\E | $qt )//x; $self->_lc($_) } |
be72dba7 |
69 | split(/$qt?\s*$qt?,$qt?\s*$qt?/, $cols); |
5223f24a |
70 | |
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71 | my @f_cols = map { s/(?: \Q$self->{_quoter}\E | $qt )//x; $self->_lc($_) } |
be72dba7 |
72 | split(/$qt?\s*$qt?,$qt?\s*$qt?/, $f_cols); |
996be9ee |
73 | |
74 | push(@rels, { |
75 | local_columns => \@cols, |
76 | remote_columns => \@f_cols, |
77 | remote_table => $f_table |
78 | }); |
79 | } |
80 | |
81 | return \@rels; |
82 | } |
83 | |
84 | # primary and unique info comes from the same sql statement, |
85 | # so cache it here for both routines to use |
86 | sub _mysql_table_get_keys { |
87 | my ($self, $table) = @_; |
88 | |
5223f24a |
89 | if(!exists($self->{_cache}->{_mysql_keys}->{$table})) { |
996be9ee |
90 | my %keydata; |
91 | my $dbh = $self->schema->storage->dbh; |
075aff97 |
92 | my $sth = $dbh->prepare('SHOW INDEX FROM '.$self->_table_as_sql($table)); |
996be9ee |
93 | $sth->execute; |
94 | while(my $row = $sth->fetchrow_hashref) { |
95 | next if $row->{Non_unique}; |
96 | push(@{$keydata{$row->{Key_name}}}, |
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97 | [ $row->{Seq_in_index}, $self->_lc($row->{Column_name}) ] |
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98 | ); |
99 | } |
100 | foreach my $keyname (keys %keydata) { |
101 | my @ordered_cols = map { $_->[1] } sort { $a->[0] <=> $b->[0] } |
102 | @{$keydata{$keyname}}; |
103 | $keydata{$keyname} = \@ordered_cols; |
104 | } |
5223f24a |
105 | $self->{_cache}->{_mysql_keys}->{$table} = \%keydata; |
996be9ee |
106 | } |
107 | |
5223f24a |
108 | return $self->{_cache}->{_mysql_keys}->{$table}; |
996be9ee |
109 | } |
110 | |
111 | sub _table_pk_info { |
112 | my ( $self, $table ) = @_; |
113 | |
114 | return $self->_mysql_table_get_keys($table)->{PRIMARY}; |
115 | } |
116 | |
117 | sub _table_uniq_info { |
118 | my ( $self, $table ) = @_; |
119 | |
120 | my @uniqs; |
121 | my $keydata = $self->_mysql_table_get_keys($table); |
8ac8926d |
122 | foreach my $keyname (keys %$keydata) { |
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123 | next if $keyname eq 'PRIMARY'; |
124 | push(@uniqs, [ $keyname => $keydata->{$keyname} ]); |
125 | } |
126 | |
127 | return \@uniqs; |
128 | } |
129 | |
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130 | sub _columns_info_for { |
131 | my $self = shift; |
132 | my ($table) = @_; |
133 | |
134 | my $result = $self->next::method(@_); |
135 | |
136 | my $dbh = $self->schema->storage->dbh; |
137 | |
138 | while (my ($col, $info) = each %$result) { |
139 | delete $info->{size} |
140 | unless $info->{data_type} =~ /^(?: (?:var)?(?:char(?:acter)?|binary) | bit | year)\z/ix; |
141 | |
142 | if ($info->{data_type} eq 'int') { |
143 | $info->{data_type} = 'integer'; |
144 | } |
145 | elsif ($info->{data_type} eq 'double') { |
146 | $info->{data_type} = 'double precision'; |
147 | } |
148 | |
149 | my ($precision, $scale, $column_type) = eval { $dbh->selectrow_array(<<'EOF', {}, lc $table, lc $col) }; |
150 | SELECT numeric_precision, numeric_scale, column_type |
151 | FROM information_schema.columns |
152 | WHERE lower(table_name) = ? AND lower(column_name) = ? |
153 | EOF |
154 | $column_type = '' if not defined $column_type; |
155 | |
156 | if ($info->{data_type} eq 'bit' && (not exists $info->{size})) { |
157 | $info->{size} = $precision if defined $precision; |
158 | } |
159 | elsif ($info->{data_type} =~ /^(?:float|double precision|decimal)\z/) { |
160 | if (defined $precision && defined $scale) { |
161 | if ($precision == 10 && $scale == 0) { |
162 | delete $info->{size}; |
163 | } |
164 | else { |
165 | $info->{size} = [$precision,$scale]; |
166 | } |
167 | } |
168 | } |
169 | elsif ($info->{data_type} eq 'year') { |
170 | if ($column_type =~ /\(2\)/) { |
171 | $info->{size} = 2; |
172 | } |
173 | elsif ($column_type =~ /\(4\)/ || $info->{size} == 4) { |
174 | delete $info->{size}; |
175 | } |
176 | } |
177 | } |
178 | |
179 | return $result; |
180 | } |
181 | |
a8df0345 |
182 | sub _extra_column_info { |
f430297e |
183 | no warnings 'uninitialized'; |
45be2ce7 |
184 | my ($self, $table, $col, $info, $dbi_info) = @_; |
a8df0345 |
185 | my %extra_info; |
78b7ccaa |
186 | |
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187 | if ($dbi_info->{mysql_is_auto_increment}) { |
a8df0345 |
188 | $extra_info{is_auto_increment} = 1 |
189 | } |
45be2ce7 |
190 | if ($dbi_info->{mysql_type_name} =~ /\bunsigned\b/i) { |
46bef65f |
191 | $extra_info{extra}{unsigned} = 1; |
192 | } |
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193 | if ($dbi_info->{mysql_values}) { |
194 | $extra_info{extra}{list} = $dbi_info->{mysql_values}; |
8fdd52a2 |
195 | } |
3372cb43 |
196 | if ( lc($dbi_info->{COLUMN_DEF}) eq 'current_timestamp' |
197 | && lc($dbi_info->{mysql_type_name}) eq 'timestamp') { |
3facc532 |
198 | |
f430297e |
199 | $extra_info{default_value} = \'CURRENT_TIMESTAMP'; |
200 | } |
8fdd52a2 |
201 | |
a8df0345 |
202 | return \%extra_info; |
8fdd52a2 |
203 | } |
204 | |
996be9ee |
205 | =head1 SEE ALSO |
206 | |
207 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
208 | L<DBIx::Class::Schema::Loader::DBI> |
209 | |
be80bba7 |
210 | =head1 AUTHOR |
211 | |
9cc8e7e1 |
212 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
213 | |
214 | =head1 LICENSE |
215 | |
216 | This library is free software; you can redistribute it and/or modify it under |
217 | the same terms as Perl itself. |
218 | |
996be9ee |
219 | =cut |
220 | |
221 | 1; |
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222 | # vim:et sw=4 sts=4 tw=0: |