1 package DBIx::Class::Schema::Loader::DBI::mysql;
5 use base 'DBIx::Class::Schema::Loader::DBI';
7 use List::Util 'first';
10 our $VERSION = '0.07010';
14 DBIx::Class::Schema::Loader::DBI::mysql - DBIx::Class::Schema::Loader::DBI mysql Implementation.
18 See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>.
25 $self->schema->storage->sql_maker->quote_char("`");
26 $self->schema->storage->sql_maker->name_sep(".");
28 $self->next::method(@_);
30 if (not defined $self->preserve_case) {
31 $self->preserve_case(0);
36 my ($self, $opts) = @_;
38 return $self->next::method($opts, undef, undef);
42 my ($self, $table) = @_;
44 my $dbh = $self->schema->storage->dbh;
46 my $table_def_ref = eval { $dbh->selectrow_arrayref("SHOW CREATE TABLE `$table`") };
47 my $table_def = $table_def_ref->[1];
49 return [] if not $table_def;
53 my (@reldata) = ($table_def =~
54 /CONSTRAINT $qt.*$qt FOREIGN KEY \($qt(.*)$qt\) REFERENCES $qt(.*)$qt \($qt(.*)$qt\)/ig
58 while (scalar @reldata > 0) {
59 my $cols = shift @reldata;
60 my $f_table = shift @reldata;
61 my $f_cols = shift @reldata;
63 my @cols = map { s/(?: \Q$self->{_quoter}\E | $qt )//x; $self->_lc($_) }
64 split(/$qt?\s*$qt?,$qt?\s*$qt?/, $cols);
66 my @f_cols = map { s/(?: \Q$self->{_quoter}\E | $qt )//x; $self->_lc($_) }
67 split(/$qt?\s*$qt?,$qt?\s*$qt?/, $f_cols);
69 my $remote_table = first { $_ =~ /^${f_table}\z/i } $self->_tables_list;
72 local_columns => \@cols,
73 remote_columns => \@f_cols,
74 remote_table => $remote_table,
81 # primary and unique info comes from the same sql statement,
82 # so cache it here for both routines to use
83 sub _mysql_table_get_keys {
84 my ($self, $table) = @_;
86 if(!exists($self->{_cache}->{_mysql_keys}->{$table})) {
88 my $dbh = $self->schema->storage->dbh;
89 my $sth = $dbh->prepare('SHOW INDEX FROM '.$self->_table_as_sql($table));
91 while(my $row = $sth->fetchrow_hashref) {
92 next if $row->{Non_unique};
93 push(@{$keydata{$row->{Key_name}}},
94 [ $row->{Seq_in_index}, $self->_lc($row->{Column_name}) ]
97 foreach my $keyname (keys %keydata) {
98 my @ordered_cols = map { $_->[1] } sort { $a->[0] <=> $b->[0] }
99 @{$keydata{$keyname}};
100 $keydata{$keyname} = \@ordered_cols;
102 $self->{_cache}->{_mysql_keys}->{$table} = \%keydata;
105 return $self->{_cache}->{_mysql_keys}->{$table};
109 my ( $self, $table ) = @_;
111 return $self->_mysql_table_get_keys($table)->{PRIMARY};
114 sub _table_uniq_info {
115 my ( $self, $table ) = @_;
118 my $keydata = $self->_mysql_table_get_keys($table);
119 foreach my $keyname (keys %$keydata) {
120 next if $keyname eq 'PRIMARY';
121 push(@uniqs, [ $keyname => $keydata->{$keyname} ]);
127 sub _columns_info_for {
131 my $result = $self->next::method(@_);
133 my $dbh = $self->schema->storage->dbh;
135 while (my ($col, $info) = each %$result) {
136 delete $info->{size} if $info->{data_type} !~ /^(?: (?:var)?(?:char(?:acter)?|binary) | bit | year)\z/ix;
138 if ($info->{data_type} eq 'int') {
139 $info->{data_type} = 'integer';
141 elsif ($info->{data_type} eq 'double') {
142 $info->{data_type} = 'double precision';
145 # information_schema is available in 5.0+
146 my ($precision, $scale, $column_type, $default) = eval { $dbh->selectrow_array(<<'EOF', {}, $table, $col) };
147 SELECT numeric_precision, numeric_scale, column_type, column_default
148 FROM information_schema.columns
149 WHERE table_name = ? AND column_name = ?
151 my $has_information_schema = not defined $@;
153 $column_type = '' if not defined $column_type;
155 if ($info->{data_type} eq 'bit' && (not exists $info->{size})) {
156 $info->{size} = $precision if defined $precision;
158 elsif ($info->{data_type} =~ /^(?:float|double precision|decimal)\z/i) {
159 if (defined $precision && defined $scale) {
160 if ($precision == 10 && $scale == 0) {
161 delete $info->{size};
164 $info->{size} = [$precision,$scale];
168 elsif ($info->{data_type} eq 'year') {
169 if ($column_type =~ /\(2\)/) {
172 elsif ($column_type =~ /\(4\)/ || $info->{size} == 4) {
173 delete $info->{size};
176 elsif ($info->{data_type} =~ /^(?:date(?:time)?|timestamp)\z/) {
177 if (not (defined $self->datetime_undef_if_invalid && $self->datetime_undef_if_invalid == 0)) {
178 $info->{datetime_undef_if_invalid} = 1;
182 # Sometimes apparently there's a bug where default_value gets set to ''
183 # for things that don't actually have or support that default (like ints.)
184 if (exists $info->{default_value} && $info->{default_value} eq '') {
185 if ($has_information_schema) {
186 if (not defined $default) {
187 delete $info->{default_value};
190 else { # just check if it's a char/text type, otherwise remove
191 delete $info->{default_value} unless $info->{data_type} =~ /char|text/i;
199 sub _extra_column_info {
200 no warnings 'uninitialized';
201 my ($self, $table, $col, $info, $dbi_info) = @_;
204 if ($dbi_info->{mysql_is_auto_increment}) {
205 $extra_info{is_auto_increment} = 1
207 if ($dbi_info->{mysql_type_name} =~ /\bunsigned\b/i) {
208 $extra_info{extra}{unsigned} = 1;
210 if ($dbi_info->{mysql_values}) {
211 $extra_info{extra}{list} = $dbi_info->{mysql_values};
213 if ( lc($dbi_info->{COLUMN_DEF}) eq 'current_timestamp'
214 && lc($dbi_info->{mysql_type_name}) eq 'timestamp') {
216 my $current_timestamp = 'current_timestamp';
217 $extra_info{default_value} = \$current_timestamp;
223 sub _dbh_column_info {
226 local $SIG{__WARN__} = sub { warn @_
227 unless $_[0] =~ /^column_info: unrecognized column type/ };
229 $self->next::method(@_);
234 L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
235 L<DBIx::Class::Schema::Loader::DBI>
239 See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
243 This library is free software; you can redistribute it and/or modify it under
244 the same terms as Perl itself.
249 # vim:et sw=4 sts=4 tw=0: