From 20761a3cd9205e16bfdecb298db474c75b292ce8 Mon Sep 17 00:00:00 2001
From: Asias He <asias@cloudius-systems.com>
Date: Wed, 14 Jan 2015 15:24:56 +0800
Subject: [PATCH] Add abstract_type::is_compatible_with

---
 database.hh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/database.hh b/database.hh
index 5d750dbd90..81bdacd695 100644
--- a/database.hh
+++ b/database.hh
@@ -76,6 +76,11 @@ public:
     virtual void validate_collection_member(const bytes& v, const bytes& collection_name) {
         validate(v);
     }
+    virtual bool is_compatible_with(abstract_type& previous) {
+        // FIXME
+        abort();
+        return false;
+    }
     virtual object_opt compose(const bytes& v) {
         return deserialize(v);
     }