--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/notify/EventGeneratorState.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,18 @@
+package org.dancres.blitz.notify;
+
+import java.io.Serializable;
+
+import org.dancres.blitz.txn.TxnId;
+
+import org.dancres.blitz.oid.OID;
+
+/**
+   Used to contain a Memento (see GOF) of an EventGenerator which can be
+   saved to/loaded from disk.  This is basically an opaque type with one
+   method which can be used to restore an EventGenerator from the state.
+ */
+public interface EventGeneratorState extends Serializable {
+    public EventGenerator getGenerator();
+    public boolean isPersistent();
+    public OID getOID();
+}