From 9c836742066fd3956921929532e146b1f10b9969 Mon Sep 17 00:00:00 2001
From: Keith Donald <kdonald@vmware.com>
Date: Mon, 21 Apr 2008 22:23:50 +0000
Subject: [PATCH] all expressions should be serializable

---
 .../org/springframework/binding/expression/Expression.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/spring-binding/src/main/java/org/springframework/binding/expression/Expression.java b/spring-binding/src/main/java/org/springframework/binding/expression/Expression.java
index ef9dbb08..a5608420 100644
--- a/spring-binding/src/main/java/org/springframework/binding/expression/Expression.java
+++ b/spring-binding/src/main/java/org/springframework/binding/expression/Expression.java
@@ -15,6 +15,8 @@
  */
 package org.springframework.binding.expression;
 
+import java.io.Serializable;
+
 /**
  * An expression capable of evaluating itself against context objects. Encapsulates the details of a previously parsed
  * expression string. Provides a common abstraction for expression evaluation independent of any language like OGNL or
@@ -22,7 +24,7 @@ package org.springframework.binding.expression;
  * 
  * @author Keith Donald
  */
-public interface Expression {
+public interface Expression extends Serializable {
 
 	/**
 	 * Evaluate this expression in the provided context and return the result of evaluation.