use strict;
use warnings;
use base 'DBIx::Class::Schema::Loader::DBI';
+use mro 'c3';
use Carp::Clan qw/^DBIx::Class/;
-use Class::C3;
+use List::Util 'first';
+use List::MoreUtils 'any';
+use Try::Tiny;
+use Scalar::Util 'blessed';
+use namespace::clean;
+use DBIx::Class::Schema::Loader::Table ();
-our $VERSION = '0.04999_04';
+our $VERSION = '0.07035';
=head1 NAME
DBIx::Class::Schema::Loader::DBI::mysql - DBIx::Class::Schema::Loader::DBI mysql Implementation.
-=head1 SYNOPSIS
+=head1 DESCRIPTION
- package My::Schema;
- use base qw/DBIx::Class::Schema::Loader/;
+See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>.
- __PACKAGE__->loader_options( debug => 1 );
+=cut
- 1;
+sub _setup {
+ my $self = shift;
-=head1 DESCRIPTION
+ $self->schema->storage->sql_maker->quote_char("`");
+ $self->schema->storage->sql_maker->name_sep(".");
-See L<DBIx::Class::Schema::Loader::Base>.
+ $self->next::method(@_);
-=cut
+ if (not defined $self->preserve_case) {
+ $self->preserve_case(0);
+ }
+
+ if ($self->db_schema && $self->db_schema->[0] eq '%') {
+ my @schemas = try {
+ $self->_show_databases;
+ }
+ catch {
+ croak "no SHOW DATABASES privileges: $_";
+ };
+
+ @schemas = grep {
+ my $schema = $_;
+ not any { lc($schema) eq lc($_) } $self->_system_schemas
+ } @schemas;
+
+ $self->db_schema(\@schemas);
+ }
+}
+
+sub _show_databases {
+ my $self = shift;
+
+ return map $_->[0], @{ $self->dbh->selectall_arrayref('SHOW DATABASES') };
+}
-# had to override here because MySQL apparently
-# doesn't support '%' syntax. Perhaps the other
-# drivers support this syntax also, but I didn't
-# want to risk breaking some esoteric DBD::foo version
-# in a maint release...
-sub _tables_list {
+sub _system_schemas {
my $self = shift;
- my $dbh = $self->schema->storage->dbh;
- my @tables = $dbh->tables(undef, $self->db_schema, undef, undef);
- s/\Q$self->{_quoter}\E//g for @tables;
- s/^.*\Q$self->{_namesep}\E// for @tables;
+ return ($self->next::method(@_), 'mysql');
+}
+
+sub _tables_list {
+ my ($self, $opts) = @_;
- return @tables;
+ return $self->next::method($opts, undef, undef);
}
sub _table_fk_info {
my ($self, $table) = @_;
- my $dbh = $self->schema->storage->dbh;
- my $table_def_ref = $dbh->selectrow_arrayref("SHOW CREATE TABLE `$table`")
- or croak ("Cannot get table definition for $table");
- my $table_def = $table_def_ref->[1] || '';
-
- my (@reldata) = ($table_def =~ /CONSTRAINT `.*` FOREIGN KEY \(`(.*)`\) REFERENCES `(.*)` \(`(.*)`\)/ig);
+ my $table_def_ref = eval { $self->dbh->selectrow_arrayref("SHOW CREATE TABLE ".$table->sql_name) };
+ my $table_def = $table_def_ref->[1];
+
+ return [] if not $table_def;
+
+ my $qt = qr/["`]/;
+ my $nqt = qr/[^"`]/;
+
+ my (@reldata) = ($table_def =~
+ /CONSTRAINT ${qt}${nqt}+${qt} FOREIGN KEY \($qt(.*)$qt\) REFERENCES (?:$qt($nqt+)$qt\.)?$qt($nqt+)$qt \($qt(.+)$qt\)\s*(.*)/ig
+ );
my @rels;
while (scalar @reldata > 0) {
- my $cols = shift @reldata;
- my $f_table = shift @reldata;
- my $f_cols = shift @reldata;
+ my ($cols, $f_schema, $f_table, $f_cols, $rest) = splice @reldata, 0, 5;
+
+ my @cols = map { s/$qt//g; $self->_lc($_) }
+ split(/$qt?\s*$qt?,$qt?\s*$qt?/, $cols);
+
+ my @f_cols = map { s/$qt//g; $self->_lc($_) }
+ split(/$qt?\s*$qt?,$qt?\s*$qt?/, $f_cols);
+
+ # Match case of remote schema to that in SHOW DATABASES, if it's there
+ # and we have permissions to run SHOW DATABASES.
+ if ($f_schema) {
+ my $matched = first {
+ lc($_) eq lc($f_schema)
+ } try { $self->_show_databases };
+
+ $f_schema = $matched if $matched;
+ }
+
+ my $remote_table = do {
+ # Get ->tables_list to return tables from the remote schema, in case it is not in the db_schema list.
+ local $self->{db_schema} = [ $f_schema ] if $f_schema;
+
+ first {
+ lc($_->name) eq lc($f_table)
+ && ((not $f_schema) || lc($_->schema) eq lc($f_schema))
+ } $self->_tables_list;
+ };
+
+ # The table may not be in any database, or it may not have been found by the previous code block for whatever reason.
+ if (not $remote_table) {
+ my $remote_schema = $f_schema || $self->db_schema && @{ $self->db_schema } == 1 && $self->db_schema->[0];
+
+ $remote_table = DBIx::Class::Schema::Loader::Table->new(
+ loader => $self,
+ name => $f_table,
+ ($remote_schema ? (
+ schema => $remote_schema,
+ ) : ()),
+ );
+ }
+
+ my %attrs;
- my @cols = map { s/\Q$self->{_quoter}\E//; lc $_ }
- split(/\s*,\s*/, $cols);
+ if ($rest) {
+ my @on_clauses = $rest =~ /(ON DELETE|ON UPDATE) (RESTRICT|CASCADE|SET NULL|NO ACTION) ?/ig;
- my @f_cols = map { s/\Q$self->{_quoter}\E//; lc $_ }
- split(/\s*,\s*/, $f_cols);
+ while (my ($clause, $value) = splice @on_clauses, 0, 2) {
+ $clause = lc $clause;
+ $clause =~ s/ /_/;
+
+ $value = uc $value;
+
+ $attrs{$clause} = $value;
+ }
+ }
+
+# The default behavior is RESTRICT. Specifying RESTRICT explicitly just removes
+# that ON clause from the SHOW CREATE TABLE output. For this reason, even
+# though the default for these clauses everywhere else in Schema::Loader is
+# CASCADE, we change the default here to RESTRICT in order to reproduce the
+# schema faithfully.
+ $attrs{on_delete} ||= 'RESTRICT';
+ $attrs{on_update} ||= 'RESTRICT';
+
+# MySQL does not have a DEFERRABLE attribute, but there is a way to defer FKs.
+ $attrs{is_deferrable} = 1;
push(@rels, {
local_columns => \@cols,
remote_columns => \@f_cols,
- remote_table => $f_table
+ remote_table => $remote_table,
+ attrs => \%attrs,
});
}
sub _mysql_table_get_keys {
my ($self, $table) = @_;
- if(!exists($self->{_cache}->{_mysql_keys}->{$table})) {
+ if(!exists($self->{_cache}->{_mysql_keys}->{$table->sql_name})) {
my %keydata;
- my $dbh = $self->schema->storage->dbh;
- my $sth = $dbh->prepare("SHOW INDEX FROM `$table`");
+ my $sth = $self->dbh->prepare('SHOW INDEX FROM '.$table->sql_name);
$sth->execute;
while(my $row = $sth->fetchrow_hashref) {
next if $row->{Non_unique};
push(@{$keydata{$row->{Key_name}}},
- [ $row->{Seq_in_index}, lc $row->{Column_name} ]
+ [ $row->{Seq_in_index}, $self->_lc($row->{Column_name}) ]
);
}
foreach my $keyname (keys %keydata) {
@{$keydata{$keyname}};
$keydata{$keyname} = \@ordered_cols;
}
- $self->{_cache}->{_mysql_keys}->{$table} = \%keydata;
+ $self->{_cache}->{_mysql_keys}->{$table->sql_name} = \%keydata;
}
- return $self->{_cache}->{_mysql_keys}->{$table};
+ return $self->{_cache}->{_mysql_keys}->{$table->sql_name};
}
sub _table_pk_info {
return \@uniqs;
}
+sub _columns_info_for {
+ my $self = shift;
+ my ($table) = @_;
+
+ my $result = $self->next::method(@_);
+
+ while (my ($col, $info) = each %$result) {
+ if ($info->{data_type} eq 'int') {
+ $info->{data_type} = 'integer';
+ }
+ elsif ($info->{data_type} eq 'double') {
+ $info->{data_type} = 'double precision';
+ }
+ my $data_type = $info->{data_type};
+
+ delete $info->{size} if $data_type !~ /^(?: (?:var)?(?:char(?:acter)?|binary) | bit | year)\z/ix;
+
+ # information_schema is available in 5.0+
+ my ($precision, $scale, $column_type, $default) = eval { $self->dbh->selectrow_array(<<'EOF', {}, $table->name, lc($col)) };
+SELECT numeric_precision, numeric_scale, column_type, column_default
+FROM information_schema.columns
+WHERE table_name = ? AND lower(column_name) = ?
+EOF
+ my $has_information_schema = not $@;
+
+ $column_type = '' if not defined $column_type;
+
+ if ($data_type eq 'bit' && (not exists $info->{size})) {
+ $info->{size} = $precision if defined $precision;
+ }
+ elsif ($data_type =~ /^(?:float|double precision|decimal)\z/i) {
+ if (defined $precision && defined $scale) {
+ if ($precision == 10 && $scale == 0) {
+ delete $info->{size};
+ }
+ else {
+ $info->{size} = [$precision,$scale];
+ }
+ }
+ }
+ elsif ($data_type eq 'year') {
+ if ($column_type =~ /\(2\)/) {
+ $info->{size} = 2;
+ }
+ elsif ($column_type =~ /\(4\)/ || $info->{size} == 4) {
+ delete $info->{size};
+ }
+ }
+ elsif ($data_type =~ /^(?:date(?:time)?|timestamp)\z/) {
+ if (not (defined $self->datetime_undef_if_invalid && $self->datetime_undef_if_invalid == 0)) {
+ $info->{datetime_undef_if_invalid} = 1;
+ }
+ }
+ elsif ($data_type =~ /^(?:enum|set)\z/ && $has_information_schema
+ && $column_type =~ /^(?:enum|set)\(/) {
+
+ delete $info->{extra}{list};
+
+ while ($column_type =~ /'((?:[^']* (?:''|\\')* [^']*)* [^\\'])',?/xg) {
+ my $el = $1;
+ $el =~ s/''/'/g;
+ push @{ $info->{extra}{list} }, $el;
+ }
+ }
+
+ # Sometimes apparently there's a bug where default_value gets set to ''
+ # for things that don't actually have or support that default (like ints.)
+ if (exists $info->{default_value} && $info->{default_value} eq '') {
+ if ($has_information_schema) {
+ if (not defined $default) {
+ delete $info->{default_value};
+ }
+ }
+ else { # just check if it's a char/text type, otherwise remove
+ delete $info->{default_value} unless $data_type =~ /char|text/i;
+ }
+ }
+ }
+
+ return $result;
+}
+
sub _extra_column_info {
- my ($self, $info) = @_;
+ no warnings 'uninitialized';
+ my ($self, $table, $col, $info, $dbi_info) = @_;
my %extra_info;
- if ($info->{mysql_is_auto_increment}) {
+ if ($dbi_info->{mysql_is_auto_increment}) {
$extra_info{is_auto_increment} = 1
}
- if ($info->{mysql_type_name} =~ /\bunsigned\b/i) {
+ if ($dbi_info->{mysql_type_name} =~ /\bunsigned\b/i) {
$extra_info{extra}{unsigned} = 1;
}
- if ($info->{mysql_values}) {
- $extra_info{extra}{list} = $info->{mysql_values};
+ if ($dbi_info->{mysql_values}) {
+ $extra_info{extra}{list} = $dbi_info->{mysql_values};
+ }
+ if ((not blessed $dbi_info) # isa $sth
+ && lc($dbi_info->{COLUMN_DEF}) eq 'current_timestamp'
+ && lc($dbi_info->{mysql_type_name}) eq 'timestamp') {
+
+ my $current_timestamp = 'current_timestamp';
+ $extra_info{default_value} = \$current_timestamp;
}
return \%extra_info;
}
+sub _dbh_column_info {
+ my $self = shift;
+
+ local $SIG{__WARN__} = sub { warn @_
+ unless $_[0] =~ /^column_info: unrecognized column type/ };
+
+ $self->next::method(@_);
+}
+
+sub _table_comment {
+ my ( $self, $table ) = @_;
+ my $comment = $self->next::method($table);
+ if (not $comment) {
+ ($comment) = try { $self->schema->storage->dbh->selectrow_array(
+ qq{SELECT table_comment
+ FROM information_schema.tables
+ WHERE table_schema = schema()
+ AND table_name = ?
+ }, undef, $table->name);
+ };
+ # InnoDB likes to auto-append crap.
+ if (not $comment) {
+ # Do nothing.
+ }
+ elsif ($comment =~ /^InnoDB free:/) {
+ $comment = undef;
+ }
+ else {
+ $comment =~ s/; InnoDB.*//;
+ }
+ }
+ return $comment;
+}
+
+sub _column_comment {
+ my ( $self, $table, $column_number, $column_name ) = @_;
+ my $comment = $self->next::method($table, $column_number, $column_name);
+ if (not $comment) {
+ ($comment) = try { $self->schema->storage->dbh->selectrow_array(
+ qq{SELECT column_comment
+ FROM information_schema.columns
+ WHERE table_schema = schema()
+ AND table_name = ?
+ AND lower(column_name) = ?
+ }, undef, $table->name, lc($column_name));
+ };
+ }
+ return $comment;
+}
+
=head1 SEE ALSO
L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
L<DBIx::Class::Schema::Loader::DBI>
+=head1 AUTHOR
+
+See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
+
+=head1 LICENSE
+
+This library is free software; you can redistribute it and/or modify it under
+the same terms as Perl itself.
+
=cut
1;
+# vim:et sw=4 sts=4 tw=0: