From 3f0149b5b74d4017ba7f4ca28aa8a3e2053db964 Mon Sep 17 00:00:00 2001
From: "Christophe.Boulain" <>
Date: Mon, 15 Jun 2009 07:49:42 +0000
Subject: Primilary import of new db stuff

---
 framework/Db/schema/TDbExpression.php | 49 +++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100755 framework/Db/schema/TDbExpression.php

(limited to 'framework/Db/schema/TDbExpression.php')

diff --git a/framework/Db/schema/TDbExpression.php b/framework/Db/schema/TDbExpression.php
new file mode 100755
index 00000000..58ffb498
--- /dev/null
+++ b/framework/Db/schema/TDbExpression.php
@@ -0,0 +1,49 @@
+<?php
+/**
+ * TDbExpression class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * TDbExpression represents a DB expression that does not need escaping.
+ * TDbExpression is mainly used in {@link CActiveRecord} as attribute values.
+ * When inserting or updating a {@link CActiveRecord}, attribute values of
+ * type TDbExpression will be directly put into the corresponding SQL statement
+ * without escaping. A typical usage is that an attribute is set with 'NOW()'
+ * expression so that saving the record would fill the corresponding column
+ * with the current DB server timestamp.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package system.db.schema
+ * @since 1.0.2
+ */
+class TDbExpression extends TComponent
+{
+	/**
+	 * @var string the DB expression
+	 */
+	public $expression;
+
+	/**
+	 * Constructor.
+	 * @param string the DB expression
+	 */
+	public function __construct($expression)
+	{
+		$this->expression=$expression;
+	}
+
+	/**
+	 * String magic method
+	 * @return string the DB expression
+	 */
+	public function __toString()
+	{
+		return $this->expression;
+	}
+}
\ No newline at end of file
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