--- /dev/null
+/*
+ * Copyright (c) 2015 Brocade Communications Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.cluster.datastore.messages;
+
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+
+/**
+ * Abstract base class for a versioned Externalizable message.
+ *
+ * @author Thomas Pantelis
+ */
+public abstract class VersionedExternalizableMessage implements Externalizable, SerializableMessage {
+ private static final long serialVersionUID = 1L;
+
+ private short version;
+
+ public VersionedExternalizableMessage() {
+ }
+
+ public VersionedExternalizableMessage(short version) {
+ this.version = version;
+ }
+
+ public short getVersion() {
+ return version;
+ }
+
+ @Override
+ public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ version = in.readShort();
+ }
+
+ @Override
+ public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeShort(version);
+ }
+}