#120 - ENH: Add support for using where() on bulk Update statements

src/main/java/com/avaje/ebeaninternal/server/expression/JunctionExpression.java

@@ -279,6 +279,11 @@ class JunctionExpression<T> implements SpiJunction<T>, SpiExpression, Expression
     return exprList.delete();
   }
 
+  @Override
+  public int update() {
+    return exprList.update();
+  }
+
   @Override
   public Query<T> asOf(Timestamp asOf) {
     return exprList.asOf(asOf);