# -------------------------------------------------------------------
sub parse {
# this is a hack to prevent schema leaks due to a retarded SQLT implementation
- # DO NOT REMOVE
+ # DO NOT REMOVE (until SQLT2 is out, the all of this will be rewritten anyway)
Scalar::Util::weaken ($_[1]);
my ($tr, $data) = @_;
}
}
- if($rel_table)
- {
+ if($rel_table) {
# Constraints are added only if applicable
next unless $fk_constraint;
-
+
# Make sure we dont create the same foreign key constraint twice
my $key_test = join("\x00", sort @keys);
next if $created_FK_rels{$rel_table}->{$key_test};
-
+
if (scalar(@keys)) {
-
$created_FK_rels{$rel_table}->{$key_test} = 1;
my $is_deferrable = $rel_info->{attrs}{is_deferrable};
}
$table->add_constraint(
- type => 'foreign_key',
- name => join('_', $table_name, 'fk', @keys),
- fields => \@keys,
- reference_fields => \@refkeys,
- reference_table => $rel_table,
- on_delete => uc ($cascade->{delete} || ''),
- on_update => uc ($cascade->{update} || ''),
- (defined $is_deferrable ? ( deferrable => $is_deferrable ) : ()),
+ type => 'foreign_key',
+ name => join('_', $table_name, 'fk', @keys),
+ fields => \@keys,
+ reference_fields => \@refkeys,
+ reference_table => $rel_table,
+ on_delete => uc ($cascade->{delete} || ''),
+ on_update => uc ($cascade->{update} || ''),
+ (defined $is_deferrable ? ( deferrable => $is_deferrable ) : ()),
);
# global parser_args add_fk_index param can be overridden on the rel def
my $add_fk_index_rel = (exists $rel_info->{attrs}{add_fk_index}) ? $rel_info->{attrs}{add_fk_index} : $add_fk_index;
+ # Make sure we don't create another index with the same
+ # order of columns twice
+
+ # WARNING: don't sort the key columns because the order of
+ # columns is important for indexes and two indexes with the
+ # same cols but different order are allowed and sometimes
+ # needed
+ my $key_idx_test = join("\x00", @keys);
+ my $pk_idx_test = join("\x00", @primary);
+ next if $key_idx_test eq $pk_idx_test;
if ($add_fk_index_rel) {
my $index = $table->add_index(
- name => join('_', $table_name, 'idx', @keys),
- fields => \@keys,
- type => 'NORMAL',
- );
+ name => join('_', $table_name, 'idx', @keys),
+ fields => \@keys,
+ type => 'NORMAL',
+ );
}
}
}
my $schema = MyApp::Schema->connect;
my $trans = SQL::Translator->new (
parser => 'SQL::Translator::Parser::DBIx::Class',
- parser_args => { package => $schema },
+ parser_args => {
+ package => $schema,
+ add_fk_index => 0,
+ sources => [qw/
+ Artist
+ CD
+ /],
+ },
producer => 'SQLite',
) or die SQL::Translator->error;
my $out = $trans->translate() or die $trans->error;
have SQL::Translator installed. To do this see
L<DBIx::Class::Schema/create_ddl_dir>.
+=head1 PARSER OPTIONS
+
+=head2 add_fk_index
+
+Create an index for each foreign key.
+Enabled by default, as having indexed foreign key columns is normally the
+sensible thing to do.
+
+=head2 sources
+
+=over 4
+
+=item Arguments: @classes
+
+=back
+
+Limit the amount of parsed sources by supplying an explicit list of source names.
+
=head1 SEE ALSO
L<SQL::Translator>, L<DBIx::Class::Schema>
Matt S Trout
Ash Berlin
+
+Alexander Hartmaier