allow detection of ddl parser

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

diff --git a/lib/SQL/Translator.pm b/lib/SQL/Translator.pm
index 78a0041..567c005 100644 (file)
--- a/lib/SQL/Translator.pm
+++ b/lib/SQL/Translator.pm
@@ -1,3 +1,76 @@
-package SQL::Translator;
-
-1;
+use MooseX::Declare;
+class SQL::Translator {
+    use MooseX::Types::Moose qw(Str);
+    use TryCatch;
+    use SQL::Translator::Types qw(DBIHandle Parser Producer);
+    
+    has 'parser' => (
+        isa => Str,
+        is => 'ro',
+        init_arg => 'from',
+        required => 1,
+    );
+    
+    has 'producer' => (
+        isa => Str,
+        is => 'ro',
+        init_arg => 'to',
+        required => 1,
+    );
+    
+    has '_parser' => (
+        isa => Parser,
+        is => 'rw',
+        lazy_build => 1,
+        handles => [ qw(parse) ],
+    );
+    
+    has '_producer' => (
+        isa => Producer,
+        is => 'rw',
+        lazy_build => 1,
+        handles => [ qw(produce) ],
+    );
+    
+    has 'dbh' => (
+        isa => DBIHandle,
+        is => 'ro',
+        predicate => 'has_dbh',
+    );
+    
+    has 'filename' => (
+        isa => Str,
+        is => 'ro',
+        predicate => 'has_ddl',
+    );
+    
+    method _build__parser {
+        my $class = 'SQL::Translator::Parser';
+    
+        Class::MOP::load_class($class);
+    
+        my $parser;
+        if ($self->has_dbh) {
+            $parser = $class->new({ dbh => $self->dbh });
+        } elsif ($self->has_ddl) {
+            $parser = $class->new({ filename => $self->filename, type => $self->parser });
+        } else {
+            die "dbh or filename is required!";
+        }
+    
+        return $parser;
+    }
+    
+    method _build__producer {
+        my $class = 'SQL::Translator::Producer';
+        my $role = $class . '::' . $self->producer;
+    
+        Class::MOP::load_class($class);
+        try { Class::MOP::load_class($role) } catch ($e) { $role = $class . '::SQL::' . $self->producer; Class::MOP::load_class($role) }
+    
+        my $producer = $class->new({ schema => $self->parse });
+        $role->meta->apply($producer);
+    
+        return $producer;
+    }
+}