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 if ($info->{data_type} eq 'int') {
137 $info->{data_type} = 'integer';
139 elsif ($info->{data_type} eq 'double') {
140 $info->{data_type} = 'double precision';
142 my $data_type = $info->{data_type};
144 delete $info->{size} if $data_type !~ /^(?: (?:var)?(?:char(?:acter)?|binary) | bit | year)\z/ix;
146 # information_schema is available in 5.0+
147 my ($precision, $scale, $column_type, $default) = eval { $dbh->selectrow_array(<<'EOF', {}, $table, $col) };
148 SELECT numeric_precision, numeric_scale, column_type, column_default
149 FROM information_schema.columns
150 WHERE table_name = ? AND column_name = ?
152 my $has_information_schema = not $@;
154 $column_type = '' if not defined $column_type;
156 if ($data_type eq 'bit' && (not exists $info->{size})) {
157 $info->{size} = $precision if defined $precision;
159 elsif ($data_type =~ /^(?:float|double precision|decimal)\z/i) {
160 if (defined $precision && defined $scale) {
161 if ($precision == 10 && $scale == 0) {
162 delete $info->{size};
165 $info->{size} = [$precision,$scale];
169 elsif ($data_type eq 'year') {
170 if ($column_type =~ /\(2\)/) {
173 elsif ($column_type =~ /\(4\)/ || $info->{size} == 4) {
174 delete $info->{size};
177 elsif ($data_type =~ /^(?:date(?:time)?|timestamp)\z/) {
178 if (not (defined $self->datetime_undef_if_invalid && $self->datetime_undef_if_invalid == 0)) {
179 $info->{datetime_undef_if_invalid} = 1;
182 elsif ($data_type =~ /^(?:enum|set)\z/ && $has_information_schema
183 && $column_type =~ /^(?:enum|set)\(/) {
185 delete $info->{extra}{list};
187 while ($column_type =~ /'((?:[^']* (?:''|\\')* [^']*)* [^\\'])',?/xg) {
190 push @{ $info->{extra}{list} }, $el;
194 # Sometimes apparently there's a bug where default_value gets set to ''
195 # for things that don't actually have or support that default (like ints.)
196 if (exists $info->{default_value} && $info->{default_value} eq '') {
197 if ($has_information_schema) {
198 if (not defined $default) {
199 delete $info->{default_value};
202 else { # just check if it's a char/text type, otherwise remove
203 delete $info->{default_value} unless $data_type =~ /char|text/i;
211 sub _extra_column_info {
212 no warnings 'uninitialized';
213 my ($self, $table, $col, $info, $dbi_info) = @_;
216 if ($dbi_info->{mysql_is_auto_increment}) {
217 $extra_info{is_auto_increment} = 1
219 if ($dbi_info->{mysql_type_name} =~ /\bunsigned\b/i) {
220 $extra_info{extra}{unsigned} = 1;
222 if ($dbi_info->{mysql_values}) {
223 $extra_info{extra}{list} = $dbi_info->{mysql_values};
225 if ( lc($dbi_info->{COLUMN_DEF}) eq 'current_timestamp'
226 && lc($dbi_info->{mysql_type_name}) eq 'timestamp') {
228 my $current_timestamp = 'current_timestamp';
229 $extra_info{default_value} = \$current_timestamp;
235 sub _dbh_column_info {
238 local $SIG{__WARN__} = sub { warn @_
239 unless $_[0] =~ /^column_info: unrecognized column type/ };
241 $self->next::method(@_);
246 L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
247 L<DBIx::Class::Schema::Loader::DBI>
251 See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
255 This library is free software; you can redistribute it and/or modify it under
256 the same terms as Perl itself.
261 # vim:et sw=4 sts=4 tw=0: