From 276cd9276df4ab233482b0c3f73ba1b9597ccc11 Mon Sep 17 00:00:00 2001
From: markt <markt@13f79535-47bb-0310-9956-ffa450edef68>
Date: Wed, 13 Jan 2010 19:20:42 +0000
Subject: [PATCH] Implement remainder of EL 2.2. API changes

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@898902 13f79535-47bb-0310-9956-ffa450edef68
---
 java/javax/el/MethodExpression.java | 10 +++++++++
 java/javax/el/ValueExpression.java  |  9 ++++++++
 java/javax/el/ValueReference.java   | 44 +++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+)
 create mode 100644 java/javax/el/ValueReference.java

diff --git a/java/javax/el/MethodExpression.java b/java/javax/el/MethodExpression.java
index 0b566fcfa..34c7cc055 100644
--- a/java/javax/el/MethodExpression.java
+++ b/java/javax/el/MethodExpression.java
@@ -22,7 +22,17 @@ package javax.el;
  */
 public abstract class MethodExpression extends Expression {
 
+    private static final long serialVersionUID = 8163925562047324656L;
+
     public abstract MethodInfo getMethodInfo(ELContext context) throws NullPointerException, PropertyNotFoundException, MethodNotFoundException, ELException;
     
     public abstract Object invoke(ELContext context, Object[] params) throws NullPointerException, PropertyNotFoundException, MethodNotFoundException, ELException;
+    
+    /**
+     * @since EL 2.2
+     */
+    public boolean isParametersProvided() {
+        // Expected to be over-ridden by implementation
+        return false;
+    }
 }
diff --git a/java/javax/el/ValueExpression.java b/java/javax/el/ValueExpression.java
index e501a9ed3..ad785485f 100644
--- a/java/javax/el/ValueExpression.java
+++ b/java/javax/el/ValueExpression.java
@@ -22,6 +22,8 @@ package javax.el;
  */
 public abstract class ValueExpression extends Expression {
 
+    private static final long serialVersionUID = 8577809572381654673L;
+
     public abstract Class<?> getExpectedType();
     
     public abstract Class<?> getType(ELContext context) throws NullPointerException, PropertyNotFoundException, ELException;
@@ -32,4 +34,11 @@ public abstract class ValueExpression extends Expression {
     
     public abstract Object getValue(ELContext context) throws NullPointerException, PropertyNotFoundException, ELException;
 
+    /**
+     * @since EL 2.2
+     */
+    public ValueReference getValueReference(@SuppressWarnings("unused") ELContext context) {
+     // Expected to be over-ridden by implementation
+        return null;
+    }
 }
diff --git a/java/javax/el/ValueReference.java b/java/javax/el/ValueReference.java
new file mode 100644
index 000000000..d8f7f6d00
--- /dev/null
+++ b/java/javax/el/ValueReference.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package javax.el;
+
+import java.io.Serializable;
+
+/**
+ * @since EL 2.2
+ */
+public class ValueReference implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+    
+    private Object base;
+    private Object property;
+    
+    public ValueReference(Object base, Object property) {
+        this.base = base;
+        this.property = property;
+    }
+
+    public Object getBase() {
+        return base;
+    }
+    
+    public Object getProperty() {
+        return property;
+    }
+}
-- 
2.11.0