lib/SQL/Translator/Parser/DDL/SQLite.pm

   1 use MooseX::Declare;
   2 role SQL::Translator::Parser::DDL::SQLite {
   3     use MooseX::Types::Moose qw(Str);
   4     use MooseX::MultiMethods;
   5     use Moose::Autobox;
   6     use SQL::Translator::Constants qw(:sqlt_types :sqlt_constants);
   7     use SQL::Translator::Types qw(Schema);
   8     use aliased 'SQL::Translator::Object::Column';
   9     use aliased 'SQL::Translator::Object::Constraint';
  10     use aliased 'SQL::Translator::Object::ForeignKey';
  11     use aliased 'SQL::Translator::Object::Index';
  12     use aliased 'SQL::Translator::Object::PrimaryKey';
  13     use aliased 'SQL::Translator::Object::Table';
  14     use aliased 'SQL::Translator::Object::Trigger';
  15     use aliased 'SQL::Translator::Object::View';
  16
  17     around _build_data_type_mapping {
  18         my $data_type_mapping = $self->$orig;
  19         $data_type_mapping->{date} = SQL_DATE();
  20
  21         return $data_type_mapping;
  22     };
  23
  24     multi method parse(Schema $data) { $data }
  25
  26     multi method parse(Str $data) {
  27         my $translator = $self->translator;
  28         my $parser = Parse::RecDescent->new($self->grammar);
  29
  30         unless (defined $parser) {
  31             return $translator->error("Error instantiating Parse::RecDescent ".
  32                 "instance: Bad grammar");
  33         }
  34
  35         my $result = $parser->startrule($data);
  36         die "Parse failed" unless defined $result;
  37
  38         my $schema = $translator->schema;
  39         my @tables =
  40             map   { $_->[1] }
  41             map   { [ $result->{'tables'}{ $_ }->{'order'}, $_ ] }
  42             keys %{ $result->{'tables'} };
  43
  44         for my $table_name ( @tables ) {
  45             my $tdata =  $result->{'tables'}{ $table_name };
  46             my $table = Table->new({ name  => $tdata->{'name'}, schema => $schema });
  47             $table->comments( $tdata->{'comments'}->flatten ) if $tdata->{comments};
  48             $schema->add_table($table);
  49
  50             for my $fdata ( @{ $tdata->{'fields'} } ) {
  51                 my $field = Column->new({
  52                     name              => $fdata->{'name'},
  53                     data_type         => $fdata->{'data_type'},
  54                     sql_data_type     => $self->data_type_mapping->{$fdata->{data_type}} || -999999,
  55                     size              => $fdata->{'size'},
  56                     default_value     => $fdata->{'default'},
  57                     is_auto_increment => $fdata->{'is_auto_inc'},
  58                     is_nullable       => $fdata->{'is_nullable'},
  59                     comments          => $fdata->{'comments'},
  60                     table             => $table,
  61                 });
  62                 $table->add_column($field);
  63
  64                 $table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
  65
  66                 for my $cdata ( @{ $fdata->{'constraints'} } ) {
  67                     next unless $cdata->{'type'} eq 'foreign_key';
  68                     $cdata->{'fields'} ||= [ $field->name ];
  69                     push @{ $tdata->{'constraints'} }, $cdata;
  70                 }
  71             }
  72
  73             for my $idata ( @{ $tdata->{'indices'} || [] } ) {
  74                 my @columns = delete $idata->{fields};
  75                 my $index = Index->new({
  76                     name    => $idata->{'name'},
  77                     type    => uc $idata->{'type'},
  78                     table   => $table,
  79                 });
  80                 $index->add_column($table->get_column(@$_[0])) for @columns;
  81                 $table->add_index($index);
  82             }
  83
  84             for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
  85                 my $constraint;
  86                 if (uc $cdata->{type} eq 'PRIMARY_KEY') {
  87                     $constraint = PrimaryKey->new({ name => $cdata->{name} || 'primary_key', table => $table });
  88                     $constraint->add_column($table->get_column($_)) for @{$cdata->{fields}};
  89                 $table->get_column($_)->is_primary_key(1) for @{$cdata->{fields}};
  90                 } elsif (uc $cdata->{type} eq 'FOREIGN_KEY') {
  91                     $constraint = ForeignKey->new({ name => $cdata->{name} || 'foreign_key',
  92                                                     table => $table,
  93                                                     reference_table => $cdata->{reference_table},
  94                                                     reference_columns => ref $cdata->{reference_fields} ? $cdata->{reference_fields} : [ $cdata->{reference_fields} ],
  95                                                     on_delete => $cdata->{on_delete} || $cdata->{on_delete_do},
  96                                                     on_update => $cdata->{on_update} || $cdata->{on_update_do} });
  97                     $table->get_column($_)->is_foreign_key(1) for @{$cdata->{fields}};
  98                     $table->get_column($_)->foreign_key_reference($constraint) for @{$cdata->{fields}};
  99                 } else {
 100                     $constraint = Constraint->new({ name => $cdata->{name} || 'constraint', type => uc $cdata->{type}, table => $table });
 101                     $constraint->add_column($table->get_column($_)) for @{$cdata->{fields}};
 102                 }
 103                 $table->add_constraint($constraint);
 104             }
 105         }
 106
 107         for my $def ( @{ $result->{'views'} || [] } ) {
 108             my $view = View->new({
 109                 name  => $def->{'name'},
 110                 sql   => $def->{'sql'},
 111             });
 112             $schema->add_view($view);
 113         }
 114
 115         for my $def ( @{ $result->{'triggers'} || [] } ) {
 116             my $trigger = Trigger->new({
 117                 name                => $def->{'name'},
 118                 perform_action_when => $def->{'when'},
 119                 database_events     => $def->{'db_events'},
 120                 action              => $def->{'action'},
 121                 on_table            => $def->{'on_table'},
 122             });
 123             $schema->add_trigger($trigger);
 124         }
 125         return 1;
 126     }
 127 }