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diff --git a/java/demo/Database/library/Session.ice b/java/demo/Database/library/Session.ice
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+// **********************************************************************
+//
+// Copyright (c) 2003-2009 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#ifndef LIBRARY_SESSION_ICE
+#define LIBRARY_SESSION_ICE
+
+module Demo
+{
+
+/* Forward declaration. */
+interface Library;
+
+/**
+ *
+ * The session object. This is used to retrieve a per-session library
+ * on behalf of the client. If the session is not refreshed on a
+ * periodic basis, it will be automatically destroyed.
+ *
+ */
+interface Session
+{
+    /**
+     *
+     * Get the library object.
+     *
+     * @return A proxy for the new library.
+     *
+     **/
+    Library* getLibrary();
+
+    /**
+     *
+     * Refresh a session. If a session is not refreshed on a regular
+     * basis by the client, it will be automatically destroyed.
+     *
+     **/
+    idempotent void refresh();
+
+    /**
+     *
+     * Destroy the session.
+     *
+     **/
+    void destroy();
+};
+
+/**
+ *
+ * Interface to create new sessions.
+ *
+ **/
+interface SessionFactory
+{
+    /**
+     *
+     * Create a session. 
+     *
+     * @return A proxy to the session.
+     *
+     **/
+    Session* create();
+
+    /**
+     *
+     * Get the value of the session timeout. Sessions are destroyed
+     * if they see no activity for this period of time.
+     *
+     * @return The timeout (in seconds).
+     *
+     **/
+    ["nonmutating", "cpp:const"] idempotent long getSessionTimeout();
+};
+
+};
+
+#endif