- Added identifier escaping to match differents PDO drivers

src/Adapter/AdapterInterface.php

@@ -5,7 +5,13 @@ namespace Ulmus\Adapter;
 use Ulmus\Common\PdoObject;
 
 interface AdapterInterface {
+    public const IDENTIFIER_FIELD = 1;
+    public const IDENTIFIER_TABLE = 2;
+    public const IDENTIFIER_DATABASE = 3;
+    public const IDENTIFIER_SCHEMA = 4;
+    
     public function connect() : PdoObject;
     public function buildDataSourceName() : string;
     public function setup(array $configuration) : void;
+    public function escapeIdentifier(string $segment, int $type) : string;
 }

src/Adapter/MsSQL.php

@@ -185,4 +185,15 @@ class MsSQL implements AdapterInterface {
             $this->traceOn = $configuration['trace_on'];
         }
     }
+    
+    public function escapeIdentifier(string $segment, int $type) : string 
+    {
+        switch($type) {
+            case static::IDENTIFIER_SCHEMA:
+            case static::IDENTIFIER_DATABASE:
+            case static::IDENTIFIER_TABLE:
+            case static::IDENTIFIER_FIELD:
+                return "[" . str_replace(["[", "]"], [ "[[", "]]" ], $segment) . "]";
+        }
+    }
 }

src/Adapter/MySQL.php

@@ -123,4 +123,15 @@ class MySQL implements AdapterInterface {
             $this->charset = $configuration['charset'];
         }
     }
+
+    public function escapeIdentifier(string $segment, int $type) : string 
+    {
+        switch($type) {
+            case static::IDENTIFIER_DATABASE:
+            case static::IDENTIFIER_TABLE:
+            case static::IDENTIFIER_FIELD:
+                return "`" . str_replace("`", "``", $segment) . "`";
+        }
+    }
+
 }