2 * Copyright (c) 2015 Huawei, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.controller.cluster.datastore.messages;
11 import com.google.common.util.concurrent.FluentFuture;
12 import com.google.common.util.concurrent.SettableFuture;
13 import java.io.IOException;
14 import java.io.ObjectInput;
15 import java.io.ObjectOutput;
16 import org.opendaylight.controller.cluster.datastore.node.utils.stream.SerializationUtils;
17 import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadTransaction;
18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
21 * Abstract base class for ReadData and DataExists messages.
26 public abstract class AbstractRead<T> extends VersionedExternalizableMessage {
27 private static final long serialVersionUID = 1L;
29 private YangInstanceIdentifier path;
31 protected AbstractRead() {
34 public AbstractRead(final YangInstanceIdentifier path, final short version) {
39 public YangInstanceIdentifier getPath() {
44 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
45 super.readExternal(in);
46 path = SerializationUtils.deserializePath(in);
50 public void writeExternal(ObjectOutput out) throws IOException {
51 super.writeExternal(out);
52 SerializationUtils.serializePath(path, out);
55 public AbstractRead<T> asVersion(short version) {
56 return version == getVersion() ? this : newInstance(version);
59 public abstract FluentFuture<T> apply(DOMStoreReadTransaction readDelegate);
61 public abstract void processResponse(Object reponse, SettableFuture<T> promise);
63 protected abstract AbstractRead<T> newInstance(short withVersion);