fix view generation

[dbsrgits/SQL-Translator-2.0-ish.git] / lib / SQL / Translator / Parser / DDL / PostgreSQL.pm

diff --git a/lib/SQL/Translator/Parser/DDL/PostgreSQL.pm b/lib/SQL/Translator/Parser/DDL/PostgreSQL.pm
index 9715e95..f4a29c1 100644 (file)
--- a/lib/SQL/Translator/Parser/DDL/PostgreSQL.pm
+++ b/lib/SQL/Translator/Parser/DDL/PostgreSQL.pm
@@ -1,5 +1,119 @@
-package SQL::Translator::Parser::DDL::PostgreSQL;
-use namespace::autoclean;
-use Moose::Role;
+use MooseX::Declare;
+role SQL::Translator::Parser::DDL::PostgreSQL {
+    use MooseX::Types::Moose qw(Str);
+    use MooseX::MultiMethods;
+    use Moose::Autobox;
+    use SQL::Translator::Constants qw(:sqlt_types :sqlt_constants);
+    use SQL::Translator::Types qw(Schema);
+    use aliased 'SQL::Translator::Object::Column';
+    use aliased 'SQL::Translator::Object::Constraint';
+    use aliased 'SQL::Translator::Object::ForeignKey';
+    use aliased 'SQL::Translator::Object::Index';
+    use aliased 'SQL::Translator::Object::PrimaryKey';
+    use aliased 'SQL::Translator::Object::Table';
+    use aliased 'SQL::Translator::Object::View';
 
-1;
+    multi method parse(Schema $data) { $data }
+
+    multi method parse(Str $data) {
+        my $translator = $self->translator;
+        my $parser = Parse::RecDescent->new($self->grammar);
+    
+        unless (defined $parser) {
+            return $translator->error("Error instantiating Parse::RecDescent ".
+                "instance: Bad grammar");
+        }
+    
+        my $result = $parser->startrule($data);
+        die "Parse failed.\n" unless defined $result;
+
+        my $schema = $translator->schema;
+        my @tables = 
+         sort { ( $result->{tables}{ $a }{'order'} || 0 ) <=> ( $result->{tables}{ $b }{'order'} || 0 ) }
+         keys %{ $result->{tables} };
+    
+        for my $table_name ( @tables ) {
+            my $tdata = $result->{tables}{ $table_name };
+            my $table = Table->new({ name => $tdata->{table_name}, schema => $schema });
+            $schema->add_table($table);
+    
+            $table->extra({ temporary => 1 }) if $tdata->{'temporary'};
+            $table->comments( [ $tdata->{'comments'}->flatten ]) if $tdata->{comments};
+    
+            my @fields = sort { $tdata->{'fields'}{ $a }{'order'} <=> $tdata->{'fields'}{ $b }{'order'} } keys %{ $tdata->{'fields'} };
+    
+            for my $fname ( @fields ) {
+                my $fdata = $tdata->{'fields'}{ $fname };
+                next if $fdata->{'drop'};
+                my $field = Column->new({
+                    name              => $fdata->{'name'},
+                    data_type         => $fdata->{'data_type'},
+                    sql_data_type     => $self->data_type_mapping->{$fdata->{data_type}} || -999999,
+                    size              => $fdata->{'size'},
+                    default_value     => $fdata->{'default'},
+                    is_auto_increment => $fdata->{'is_auto_increment'}, 
+                    is_nullable       => $fdata->{'is_nullable'},
+                    table             => $table,
+                });
+                $field->comments($fdata->{comments});
+
+                $table->add_column($field);
+                $field->is_primary_key(1) if $fdata->{is_primary_key};
+    
+                for my $cdata ( @{ $fdata->{constraints} } ) {
+                    next unless lc $cdata->{type} eq 'foreign_key';
+                    $cdata->{fields} ||= [ $field->name ];
+                    push @{ $tdata->{constraints} }, $cdata;
+                }
+            }
+    
+            for my $idata ( @{ $tdata->{indices} || [] } ) {
+                my $index = Index->new({
+                    name    => $idata->{name},
+                    type    => uc $idata->{type},
+                    table   => $table,
+                });
+                $index->add_column($table->get_column($_)) for @{$idata->{fields}};
+                $table->add_index($index);
+            }
+    
+            for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
+                my $constraint;
+                $cdata->{type} =~ s/_/ /g;
+                if (uc $cdata->{type} eq PRIMARY_KEY) {
+                    $constraint = PrimaryKey->new({ name => $cdata->{name} || '', table => $table });
+                    $table->get_column($_)->is_primary_key(1) for @{$cdata->{fields}};
+                } elsif (uc $cdata->{type} eq FOREIGN_KEY) {
+                    $constraint = ForeignKey->new({ name => $cdata->{name} || '',
+                                                    table => $table,
+                                                    reference_table => $cdata->{reference_table},
+                                                    reference_columns => $cdata->{reference_fields},
+                                                    on_delete => $cdata->{on_delete} || $cdata->{on_delete_do},
+                                                    on_update => $cdata->{on_update} || $cdata->{on_update_do} });
+                    $table->get_column($_)->is_foreign_key(1) for @{$cdata->{fields}};
+                    $table->get_column($_)->foreign_key_reference($constraint) for @{$cdata->{fields}};
+                } else {
+                    $constraint = Constraint->new({ name => $cdata->{name} || '', type => uc $cdata->{type}, table => $table });
+                }
+                $constraint->add_column($table->get_column($_)) for @{$cdata->{fields}};
+                $table->add_constraint($constraint);
+            }
+        }
+    
+        for my $vinfo (@{$result->{views}}) {
+          my $sql = $vinfo->{sql};
+          $sql =~ s/\A\s+|\s+\z//g;
+          my $view = View->new({
+            name    => $vinfo->{view_name},
+            fields  => $vinfo->{fields},
+            sql     => $sql,
+          });
+
+          $schema->add_view($view);
+    
+          $view->extra ( temporary => 1 ) if $vinfo->{is_temporary};
+        }
+    
+        return 1;
+    }
+}