--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.event;\r
+\r
+import org.simantics.db.Session;\r
+import org.simantics.db.SessionManager;\r
+\r
+/**\r
+ * A listener for tracking the active Sessions of a SessionManager.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ * @see Session\r
+ * @see SessionEvent\r
+ * @see SessionManager\r
+ */\r
+public interface SessionListener {\r
+\r
+ void sessionOpened(SessionEvent e);\r
+ void sessionException(SessionEvent e);\r
+ void sessionClosed(SessionEvent e);\r
+\r
+};\r