1 files changed, 6 insertions, 0 deletions
diff --git a/src/Common/StorageBackend.h b/src/Common/StorageBackend.h
index 1d53570..abec185 100644
--- a/src/Common/StorageBackend.h
+++ b/src/Common/StorageBackend.h
@@ -38,9 +38,15 @@ class StorageBackend {
     virtual std::set<std::string> listTypes() throw (Core::Exception) = 0;
     virtual std::set<std::string> list(const std::string &type) throw (Core::Exception) = 0;
 
+    virtual bool exists(const std::string &type, const std::string &name) throw (Core::Exception) {
+      return (list(type).count(name) > 0);
+    }
+
     virtual void store(const std::string &type, const std::string &name, const XmlData *data) throw (Core::Exception) = 0;
     virtual boost::shared_ptr<XmlData> load(const std::string &type, const std::string &name) throw (Core::Exception) = 0;
 
+    virtual void remove(const std::string &type, const std::string &name) throw (Core::Exception) = 0;
+
   public:
     virtual ~StorageBackend() {}
 };