From 6b86064c33059c6f706db31bdcfbd4444252eaaf Mon Sep 17 00:00:00 2001
From: Michael Bayne <mdb@samskivert.com>
Date: Fri, 8 Apr 2011 18:04:12 -0700
Subject: [PATCH] Do this in a way that the Java 7 compiler is less angry
 about.

---
 .../java/com/samskivert/util/ValueMarshaller.java     | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/main/java/com/samskivert/util/ValueMarshaller.java b/src/main/java/com/samskivert/util/ValueMarshaller.java
index 9de7baa3..e5638800 100644
--- a/src/main/java/com/samskivert/util/ValueMarshaller.java
+++ b/src/main/java/com/samskivert/util/ValueMarshaller.java
@@ -28,11 +28,10 @@ public class ValueMarshaller
         throws Exception
     {
         if (type.isEnum()) {
-            @SuppressWarnings("unchecked") // we just asked type if it was an enum...
-            Class<? extends Enum> etype = (Class<? extends Enum>)type;
-            @SuppressWarnings("unchecked") // silly compiler, we're assigning to Object
-            Object o = Enum.valueOf(etype, source); // may throw an exception
-            return o;
+            // we need to use a dummy enum type here as there's no way to ask Enum.valueOf to
+            // execute on an existentially typed enum; it all works out under the hood
+            @SuppressWarnings("unchecked") Class<Dummy> etype = (Class<Dummy>)type;
+            return Enum.valueOf(etype, source); // may throw an exception
         }
         // look up an argument parser for the field type
         Parser parser = _parsers.get(type);
@@ -157,4 +156,6 @@ public class ValueMarshaller
             }
         });
     }
+
+    protected static enum Dummy {};
 }