- Field mapper is now removed from Adapters and set into it's own object

- Added a PK to Column (IS)

src/Adapter/MySQL.php

@@ -2,6 +2,7 @@
 
 namespace Ulmus\Adapter;
 
+use Ulmus\Migration\FieldDefinition;
 use Ulmus\Migration\MigrateInterface;
 use Ulmus\QueryBuilder\Sql;
 use Ulmus\Common\PdoObject;
@@ -136,7 +137,14 @@ class MySQL implements AdapterInterface, MigrateInterface, SqlAdapterInterface {
         }
     }
 
-    public function escapeIdentifier(string $segment, int $type) : string 
+    public function mapFieldType(FieldDefinition $field, bool $typeOnly = false) : string
+    {
+        $mapper = new MySQLFieldMapper($field);
+
+        return $typeOnly ? $mapper->type : $mapper->render();
+    }
+
+    public static function escapeIdentifier(string $segment, int $type) : string
     {
         switch($type) {
             case static::IDENTIFIER_DATABASE:
@@ -158,5 +166,4 @@ class MySQL implements AdapterInterface, MigrateInterface, SqlAdapterInterface {
     {
         return Sql\MysqlQueryBuilder::class;
     }
-
 }