1 files changed, 53 insertions, 0 deletions
diff --git a/app/php/db/DBTransaction.php b/app/php/db/DBTransaction.php
new file mode 100644
index 0000000..b176453
--- /dev/null
+++ b/app/php/db/DBTransaction.php
@@ -0,0 +1,53 @@
+<?php
+
+Prado::using('Application.db.DBConnection');
+Prado::using('System.Data.TDbTransaction');
+
+class DBTransaction extends TDbTransaction {
+
+   private $_nestedCount = 0;
+   private $_rolledBack = FALSE;
+
+   public function beginNestedTransaction() {
+      if ($this->getActive()) {
+         $this->_nestedCount++;
+      }
+   }
+
+   public function commit() {
+      if ($this->_rolledBack) {
+         $childTransaction = (bool)($this->_nestedCount);
+         $this->rollback();
+         if (!$childTransaction) {
+            throw new TDbException('Nested transaction was rolled back, unable to commit.');
+         }
+      }
+      else {
+         if ($this->_nestedCount) {
+            $this->_nestedCount--;
+         }
+         else {
+            parent::commit();
+         }
+      }
+   }
+
+   public function rollback() {
+      if (!$this->getActive()) {
+         $this->_nestedCount = 0;
+         return;
+      }
+      if ($this->_nestedCount) {
+         $this->_rolledBack = TRUE;
+         $this->_nestedCount--;
+      }
+      else {
+         parent::rollback();
+         $this->_nestedCount = 0;
+         $this->_rolledBack = FALSE;
+      }
+   }
+
+}
+
+?>