From 0d42be79b9dfeaa7686fb7da11920af4eb0561d7 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Sat, 3 Dec 2005 04:42:14 +0000
Subject:

---
 framework/core.php | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'framework/core.php')

diff --git a/framework/core.php b/framework/core.php
index 5c3d645c..84077a04 100644
--- a/framework/core.php
+++ b/framework/core.php
@@ -286,6 +286,30 @@ interface IUser
 	public function loadFromString($string);
 }
 
+/**
+ * IPageStatePersister class.
+ *
+ * This interface must be implemented by all page state persister classes.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $  $Date: $
+ * @package System
+ * @since 3.0
+ */
+interface IPageStatePersister
+{
+	/**
+	 * Loads state from a persistent storage.
+	 * @return mixed the state
+	 */
+	public function load();
+	/**
+	 * Saves state into a persistent storage.
+	 * @param mixed the state to be saved
+	 */
+	public function save($state);
+}
+
 /**
  * PradoBase class.
  *
-- 
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