DDC-1282 - Remove overprotective casting of days/months to integer, which...

DDC-1282 - Remove overprotective casting of days/months to integer, which prevents passing columns as days. The platform is not responsible for escapsing, the DQL parser already does it way before generating the sql statements.

lib/Doctrine/DBAL/Platforms/MySqlPlatform.php

@@ -108,22 +108,22 @@ class MySqlPlatform extends AbstractPlatform
 
     public function getDateAddDaysExpression($date, $days)
     {
-        return 'DATE_ADD(' . $date . ', INTERVAL ' . (int)$days . ' DAY)';
+        return 'DATE_ADD(' . $date . ', INTERVAL ' . $days . ' DAY)';
     }
 
     public function getDateSubDaysExpression($date, $days)
     {
-        return 'DATE_SUB(' . $date . ', INTERVAL ' . (int)$days . ' DAY)';
+        return 'DATE_SUB(' . $date . ', INTERVAL ' . $days . ' DAY)';
     }
 
     public function getDateAddMonthExpression($date, $months)
     {
-        return 'DATE_ADD(' . $date . ', INTERVAL ' . (int)$months . ' MONTH)';
+        return 'DATE_ADD(' . $date . ', INTERVAL ' . $months . ' MONTH)';
     }
 
     public function getDateSubMonthExpression($date, $months)
     {
-        return 'DATE_SUB(' . $date . ', INTERVAL ' . (int)$months . ' MONTH)';
+        return 'DATE_SUB(' . $date . ', INTERVAL ' . $months . ' MONTH)';
     }
 
     public function getListDatabasesSQL()

lib/Doctrine/DBAL/Platforms/OraclePlatform.php

@@ -118,22 +118,22 @@ class OraclePlatform extends AbstractPlatform
 
     public function getDateAddDaysExpression($date, $days)
     {
-        return '(' . $date . '+' . (int)$days . ')';
+        return '(' . $date . '+' . $days . ')';
     }
 
     public function getDateSubDaysExpression($date, $days)
     {
-        return '(' . $date . '-' . (int)$days . ')';
+        return '(' . $date . '-' . $days . ')';
     }
 
     public function getDateAddMonthExpression($date, $months)
     {
-        return "ADD_MONTHS(" . $date . ", " . (int)$months . ")";
+        return "ADD_MONTHS(" . $date . ", " . $months . ")";
     }
 
     public function getDateSubMonthExpression($date, $months)
     {
-        return "ADD_MONTHS(" . $date . ", -" . (int)$months . ")";
+        return "ADD_MONTHS(" . $date . ", -" . $months . ")";
     }
     
     /**

lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php

@@ -99,22 +99,22 @@ class PostgreSqlPlatform extends AbstractPlatform
 
     public function getDateAddDaysExpression($date, $days)
     {
-        return "(" . $date . "+ interval '" . (int)$days . " day')";
+        return "(" . $date . "+ interval '" . $days . " day')";
     }
 
     public function getDateSubDaysExpression($date, $days)
     {
-        return "(" . $date . "- interval '" . (int)$days . " day')";
+        return "(" . $date . "- interval '" . $days . " day')";
     }
 
     public function getDateAddMonthExpression($date, $months)
     {
-        return "(" . $date . "+ interval '" . (int)$months . " month')";
+        return "(" . $date . "+ interval '" . $months . " month')";
     }
 
     public function getDateSubMonthExpression($date, $months)
     {
-        return "(" . $date . "- interval '" . (int)$months . " month')";
+        return "(" . $date . "- interval '" . $months . " month')";
     }
     
     /**

lib/Doctrine/DBAL/Platforms/SqlitePlatform.php

@@ -132,22 +132,22 @@ class SqlitePlatform extends AbstractPlatform
 
     public function getDateAddDaysExpression($date, $days)
     {
-        return "DATE(" . $date . ",'+". (int)$days . " day')";
+        return "DATE(" . $date . ",'+". days . " day')";
     }
 
     public function getDateSubDaysExpression($date, $days)
     {
-        return "DATE(" . $date . ",'-". (int)$days . " day')";
+        return "DATE(" . $date . ",'-". $days . " day')";
     }
 
     public function getDateAddMonthExpression($date, $months)
     {
-        return "DATE(" . $date . ",'+". (int)$months . " month')";
+        return "DATE(" . $date . ",'+". $months . " month')";
     }
 
     public function getDateSubMonthExpression($date, $months)
     {
-        return "DATE(" . $date . ",'-". (int)$months . " month')";
+        return "DATE(" . $date . ",'-". $months . " month')";
     }
 
     protected function _getTransactionIsolationLevelSQL($level)