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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/; |
942bd5e0 |
7 | use mro 'c3'; |
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8 | |
3bdcf490 |
9 | our $VERSION = '0.07008'; |
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10 | |
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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 ); |
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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) = @_; |
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42 | |
bfb43060 |
43 | return $self->next::method($opts, undef, undef); |
518472fa |
44 | } |
45 | |
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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 | ); |
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61 | |
62 | my @rels; |
63 | while (scalar @reldata > 0) { |
64 | my $cols = shift @reldata; |
65 | my $f_table = shift @reldata; |
66 | my $f_cols = shift @reldata; |
67 | |
bc1cb85e |
68 | my @cols = map { s/(?: \Q$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); |
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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})) { |
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90 | my %keydata; |
91 | my $dbh = $self->schema->storage->dbh; |
075aff97 |
92 | my $sth = $dbh->prepare('SHOW INDEX FROM '.$self->_table_as_sql($table)); |
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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; |
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106 | } |
107 | |
5223f24a |
108 | return $self->{_cache}->{_mysql_keys}->{$table}; |
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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) { |
33aa3462 |
139 | delete $info->{size} if $info->{data_type} !~ /^(?: (?:var)?(?:char(?:acter)?|binary) | bit | year)\z/ix; |
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140 | |
141 | if ($info->{data_type} eq 'int') { |
142 | $info->{data_type} = 'integer'; |
143 | } |
144 | elsif ($info->{data_type} eq 'double') { |
145 | $info->{data_type} = 'double precision'; |
146 | } |
147 | |
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148 | # information_schema is available in 5.0+ |
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149 | my ($precision, $scale, $column_type, $default) = eval { $dbh->selectrow_array(<<'EOF', {}, $table, $col) }; |
150 | SELECT numeric_precision, numeric_scale, column_type, column_default |
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151 | FROM information_schema.columns |
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152 | WHERE table_name = ? AND column_name = ? |
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153 | EOF |
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154 | my $has_information_schema = not defined $@; |
155 | |
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156 | $column_type = '' if not defined $column_type; |
157 | |
158 | if ($info->{data_type} eq 'bit' && (not exists $info->{size})) { |
159 | $info->{size} = $precision if defined $precision; |
160 | } |
33aa3462 |
161 | elsif ($info->{data_type} =~ /^(?:float|double precision|decimal)\z/i) { |
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162 | if (defined $precision && defined $scale) { |
163 | if ($precision == 10 && $scale == 0) { |
164 | delete $info->{size}; |
165 | } |
166 | else { |
167 | $info->{size} = [$precision,$scale]; |
168 | } |
169 | } |
170 | } |
171 | elsif ($info->{data_type} eq 'year') { |
172 | if ($column_type =~ /\(2\)/) { |
173 | $info->{size} = 2; |
174 | } |
175 | elsif ($column_type =~ /\(4\)/ || $info->{size} == 4) { |
176 | delete $info->{size}; |
177 | } |
178 | } |
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179 | elsif ($info->{data_type} =~ /^(?:date(?:time)?|timestamp)\z/) { |
57a9fc92 |
180 | if (not (defined $self->datetime_undef_if_invalid && $self->datetime_undef_if_invalid == 0)) { |
181 | $info->{datetime_undef_if_invalid} = 1; |
182 | } |
58333f16 |
183 | } |
33aa3462 |
184 | |
185 | # Sometimes apparently there's a bug where default_value gets set to '' |
186 | # for things that don't actually have or support that default (like ints.) |
187 | if (exists $info->{default_value} && $info->{default_value} eq '') { |
188 | if ($has_information_schema) { |
189 | if (not defined $default) { |
190 | delete $info->{default_value}; |
191 | } |
192 | } |
193 | else { # just check if it's a char/text type, otherwise remove |
194 | delete $info->{default_value} unless $info->{data_type} =~ /char|text/i; |
195 | } |
196 | } |
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197 | } |
198 | |
199 | return $result; |
200 | } |
201 | |
a8df0345 |
202 | sub _extra_column_info { |
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203 | no warnings 'uninitialized'; |
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204 | my ($self, $table, $col, $info, $dbi_info) = @_; |
a8df0345 |
205 | my %extra_info; |
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206 | |
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207 | if ($dbi_info->{mysql_is_auto_increment}) { |
a8df0345 |
208 | $extra_info{is_auto_increment} = 1 |
209 | } |
45be2ce7 |
210 | if ($dbi_info->{mysql_type_name} =~ /\bunsigned\b/i) { |
46bef65f |
211 | $extra_info{extra}{unsigned} = 1; |
212 | } |
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213 | if ($dbi_info->{mysql_values}) { |
214 | $extra_info{extra}{list} = $dbi_info->{mysql_values}; |
8fdd52a2 |
215 | } |
3372cb43 |
216 | if ( lc($dbi_info->{COLUMN_DEF}) eq 'current_timestamp' |
217 | && lc($dbi_info->{mysql_type_name}) eq 'timestamp') { |
3facc532 |
218 | |
6e566cc4 |
219 | my $current_timestamp = 'current_timestamp'; |
220 | $extra_info{default_value} = \$current_timestamp; |
f430297e |
221 | } |
8fdd52a2 |
222 | |
a8df0345 |
223 | return \%extra_info; |
8fdd52a2 |
224 | } |
225 | |
db9c411a |
226 | sub _dbh_column_info { |
227 | my $self = shift; |
228 | |
229 | local $SIG{__WARN__} = sub { warn @_ |
230 | unless $_[0] =~ /^column_info: unrecognized column type/ }; |
231 | |
232 | $self->next::method(@_); |
233 | } |
234 | |
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235 | =head1 SEE ALSO |
236 | |
237 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
238 | L<DBIx::Class::Schema::Loader::DBI> |
239 | |
be80bba7 |
240 | =head1 AUTHOR |
241 | |
9cc8e7e1 |
242 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
243 | |
244 | =head1 LICENSE |
245 | |
246 | This library is free software; you can redistribute it and/or modify it under |
247 | the same terms as Perl itself. |
248 | |
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249 | =cut |
250 | |
251 | 1; |
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252 | # vim:et sw=4 sts=4 tw=0: |