Database: sql() accepts a 'specificMessage', shown if there is an exception

qfq/Database.php

@@ -178,12 +178,14 @@ class Database {
      * @param $sql
      * @param $mode
      */
-    public function sql($sql, $mode = ROW_REGULAR, array $parameterArray = array()) {
+    public function sql($sql, $mode = ROW_REGULAR, array $parameterArray = array(), $specificMessage='') {
         // for error reporting in exception
+        if($specificMessage)
+            $specificMessage .= " ";
 
         $count = $this->prepareExecute($sql, $parameterArray);
         if ($count === false) {
-            throw new DbException("No idea why this error happens - please take some time and check this: $sql", ERROR_DB_GENERIC_CHECK);
+            throw new DbException($specificMessage . "No idea why this error happens - please take some time and check this: $sql", ERROR_DB_GENERIC_CHECK);
         }
 
         if ($mode === ROW_IMPLODE_ALL) {
@@ -199,11 +201,11 @@ class Database {
                 return array();
             }
 
-            throw new DbException("Expected one row, got nothing: $sql", ERROR_DB_TOO_FEW_ROWS);
+            throw new DbException($specificMessage . "Expected one row, got nothing: $sql", ERROR_DB_TOO_FEW_ROWS);
         }
 
         if ($count > 1) {
-            throw new DbException("Expected one row, got $count rows: $sql", ERROR_DB_TOO_MANY_ROWS);
+            throw new DbException($specificMessage ."Expected one row, got $count rows: $sql", ERROR_DB_TOO_MANY_ROWS);
         }
 
         return $this->fetchOne();