From 876922e3517912983fd99599c29cf8a87f8f2ad9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20Westk=C3=A4mper?= <timo.westkamper@mysema.com>
Date: Wed, 20 Feb 2008 20:27:27 +0000
Subject: [PATCH]

---
 src/main/java/com/mysema/query/ExtQuery.java        | 2 +-
 src/main/java/com/mysema/query/grammar/Grammar.java | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/mysema/query/ExtQuery.java b/src/main/java/com/mysema/query/ExtQuery.java
index a00facad1..0c18674a3 100644
--- a/src/main/java/com/mysema/query/ExtQuery.java
+++ b/src/main/java/com/mysema/query/ExtQuery.java
@@ -8,7 +8,7 @@ package com.mysema.query;
 import com.mysema.query.grammar.Types.*;
 
 /**
- * ExtQuery provides
+ * ExtQuery externds the Query interface to provide innerJoin, leftJoin and with methods
  *
  * @author tiwe
  * @version $Id$
diff --git a/src/main/java/com/mysema/query/grammar/Grammar.java b/src/main/java/com/mysema/query/grammar/Grammar.java
index 8b93c9bee..18ae6a956 100644
--- a/src/main/java/com/mysema/query/grammar/Grammar.java
+++ b/src/main/java/com/mysema/query/grammar/Grammar.java
@@ -32,7 +32,9 @@ public class Grammar {
         return op;
     }
     
+    @SuppressWarnings("unchecked")
     static <A> Expr<A> _const(A obj){
+        if (obj instanceof Expr) return (Expr<A>)obj;
         ConstantExpr<A> e = new ConstantExpr<A>();
         e.constant = obj;
         return e;