1 package DBIx::Class::Schema::Loader::DBI;
5 use base qw/DBIx::Class::Schema::Loader::Base/;
7 use Carp::Clan qw/^DBIx::Class/;
8 use UNIVERSAL::require;
10 our $VERSION = '0.03999_01';
14 DBIx::Class::Schema::Loader::DBI - DBIx::Class::Schema::Loader DBI Implementation.
18 See L<DBIx::Class::Schema::Loader::Base>
22 This is the base class for L<DBIx::Class::Schema::Loader::Base> classes for
23 DBI-based storage backends, and implements the common functionality between them.
25 See L<DBIx::Class::Schema::Loader::Base> for the available options.
31 Overlays L<DBIx::Class::Schema::Loader::Base/new> to do some DBI-specific
37 my $self = shift->next::method(@_);
39 # rebless to vendor-specific class if it exists and loads
40 my $dbh = $self->schema->storage->dbh;
41 my $driver = $dbh->{Driver}->{Name};
42 my $subclass = 'DBIx::Class::Schema::Loader::DBI::' . $driver;
44 if($@ && $@ !~ /^Can't locate /) {
45 croak "Failed to require $subclass: $@";
48 bless $self, "DBIx::Class::Schema::Loader::DBI::${driver}";
51 # Set up the default quoting character and name seperators
52 $self->{_quoter} = $self->schema->storage->sql_maker->quote_char
56 $self->{_namesep} = $self->schema->storage->sql_maker->name_sep
60 # For our usage as regex matches, concatenating multiple quoter
61 # values works fine (e.g. s/\Q<>\E// if quoter was [ '<', '>' ])
62 if( ref $self->{_quoter} eq 'ARRAY') {
63 $self->{_quoter} = join(q{}, @{$self->{_quoter}});
71 # Override this in vendor modules to do things at the end of ->new()
74 # Returns an array of table names
78 my $dbh = $self->schema->storage->dbh;
79 my @tables = $dbh->tables(undef, $self->db_schema, '%', '%');
80 s/\Q$self->{_quoter}\E//g for @tables;
81 s/^.*\Q$self->{_namesep}\E// for @tables;
86 # Returns an arrayref of column names
88 my ($self, $table) = @_;
90 my $dbh = $self->schema->storage->dbh;
92 if($self->{db_schema}) {
93 $table = $self->{db_schema} . $self->{_namesep} . $table;
96 my $sth = $dbh->prepare("SELECT * FROM $table WHERE 1=0");
98 return \@{$sth->{NAME_lc}};
101 # Returns arrayref of pk col names
103 my ( $self, $table ) = @_;
105 my $dbh = $self->schema->storage->dbh;
107 my @primary = map { lc } $dbh->primary_key('', $self->db_schema, $table);
108 s/\Q$self->{_quoter}\E//g for @primary;
113 # Override this for uniq info
114 sub _table_uniq_info {
115 warn "No UNIQUE constraint information can be gathered for this vendor";
121 my ($self, $table) = @_;
123 my $dbh = $self->schema->storage->dbh;
124 my $sth = $dbh->foreign_key_info( '', '', '', '',
125 $self->db_schema, $table );
130 my $i = 1; # for unnamed rels, which hopefully have only 1 column ...
131 while(my $raw_rel = $sth->fetchrow_arrayref) {
132 my $uk_tbl = $raw_rel->[2];
133 my $uk_col = lc $raw_rel->[3];
134 my $fk_col = lc $raw_rel->[7];
135 my $relid = ($raw_rel->[11] || ( "__dcsld__" . $i++ ));
136 $uk_tbl =~ s/\Q$self->{_quoter}\E//g;
137 $uk_col =~ s/\Q$self->{_quoter}\E//g;
138 $fk_col =~ s/\Q$self->{_quoter}\E//g;
139 $relid =~ s/\Q$self->{_quoter}\E//g;
140 $rels{$relid}->{tbl} = $uk_tbl;
141 $rels{$relid}->{cols}->{$uk_col} = $fk_col;
145 foreach my $relid (keys %rels) {
147 remote_columns => [ keys %{$rels{$relid}->{cols}} ],
148 local_columns => [ values %{$rels{$relid}->{cols}} ],
149 remote_table => $rels{$relid}->{tbl},
158 L<DBIx::Class::Schema::Loader>