From: Justin Hunter <justin.d.hunter@gmail.com>
Date: Sat, 22 Aug 2009 21:40:20 +0000 (-0700)
Subject: add SQLite ddl parsing
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=3db4188f09b2a82858e9bebc66cd318a8928cd51;p=dbsrgits%2FSQL-Translator-2.0-ish.git

add SQLite ddl parsing
---

diff --git a/lib/SQL/Translator/Parser/DDL/SQLite.pm b/lib/SQL/Translator/Parser/DDL/SQLite.pm
index b699f9f..1665dd5 100644
--- a/lib/SQL/Translator/Parser/DDL/SQLite.pm
+++ b/lib/SQL/Translator/Parser/DDL/SQLite.pm
@@ -1,3 +1,122 @@
 use MooseX::Declare;
 role SQL::Translator::Parser::DDL::SQLite {
+    use MooseX::Types::Moose qw(Str);
+    use MooseX::MultiMethods;
+    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::Schema';
+    use aliased 'SQL::Translator::Object::Table';
+
+    around _build_data_type_mapping {
+        my $data_type_mapping = $self->$orig;
+        $data_type_mapping->{date} = SQL_DATE();
+
+        return $data_type_mapping;
+    };
+
+    multi method parse(Schema $data) { $data }
+
+    multi method parse(Str $data) {
+#        my ( $translator, $data ) = @_;
+        my $translator = $self->translator;
+#        my $parser = Parse::RecDescent->new($GRAMMAR);
+        my $parser = Parse::RecDescent->new($self->grammar);
+    
+#        local $::RD_TRACE  = $translator->trace ? 1 : undef;
+#        local $DEBUG       = $translator->debug;
+        local $::RD_TRACE  = undef; #$self->trace ? 1 : undef;
+    
+        unless (defined $parser) {
+            return $translator->error("Error instantiating Parse::RecDescent ".
+                "instance: Bad grammer");
+        }
+    
+        my $result = $parser->startrule($data);
+        die "Parse failed" unless defined $result;
+#        return $translator->error( "Parse failed." ) unless defined $result;
+#        warn Dumper( $result ) if $DEBUG;
+    
+        my $schema = $translator->schema;
+        my @tables = 
+            map   { $_->[1] }
+            sort  { $a->[0] <=> $b->[0] } 
+            map   { [ $result->{'tables'}{ $_ }->{'order'}, $_ ] }
+            keys %{ $result->{'tables'} };
+    
+        for my $table_name ( @tables ) {
+            my $tdata =  $result->{'tables'}{ $table_name };
+            my $table =  $schema->add_table( 
+                name  => $tdata->{'name'},
+            ) or die $schema->error;
+    
+            $table->comments( $tdata->{'comments'} );
+    
+            for my $fdata ( @{ $tdata->{'fields'} } ) {
+                my $field = $table->add_field(
+                    name              => $fdata->{'name'},
+                    data_type         => $fdata->{'data_type'},
+                    size              => $fdata->{'size'},
+                    default_value     => $fdata->{'default'},
+                    is_auto_increment => $fdata->{'is_auto_inc'},
+                    is_nullable       => $fdata->{'is_nullable'},
+                    comments          => $fdata->{'comments'},
+                ) or die $table->error;
+    
+                $table->primary_key( $field->name ) if $fdata->{'is_primary_key'};
+    
+                for my $cdata ( @{ $fdata->{'constraints'} } ) {
+                    next unless $cdata->{'type'} eq 'foreign_key';
+                    $cdata->{'fields'} ||= [ $field->name ];
+                    push @{ $tdata->{'constraints'} }, $cdata;
+                }
+            }
+    
+            for my $idata ( @{ $tdata->{'indices'} || [] } ) {
+                my $index  =  $table->add_index(
+                    name   => $idata->{'name'},
+                    type   => uc $idata->{'type'},
+                    fields => $idata->{'fields'},
+                ) or die $table->error;
+            }
+    
+            for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
+                my $constraint       =  $table->add_constraint(
+                    name             => $cdata->{'name'},
+                    type             => $cdata->{'type'},
+                    fields           => $cdata->{'fields'},
+                    reference_table  => $cdata->{'reference_table'},
+                    reference_fields => $cdata->{'reference_fields'},
+                    match_type       => $cdata->{'match_type'} || '',
+                    on_delete        => $cdata->{'on_delete'} 
+                                     || $cdata->{'on_delete_do'},
+                    on_update        => $cdata->{'on_update'} 
+                                     || $cdata->{'on_update_do'},
+                ) or die $table->error;
+            }
+        }
+    
+        for my $def ( @{ $result->{'views'} || [] } ) {
+            my $view = $schema->add_view(
+                name => $def->{'name'},
+                sql  => $def->{'sql'},
+            );
+        }
+    
+        for my $def ( @{ $result->{'triggers'} || [] } ) {
+            my $view                = $schema->add_trigger(
+                name                => $def->{'name'},
+                perform_action_when => $def->{'when'},
+                database_events     => $def->{'db_events'},
+                action              => $def->{'action'},
+                on_table            => $def->{'on_table'},
+            );
+        }
+    
+        return 1;
+    }
 }