2 * Copyright (c) 2014 Cisco Systems, 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.base.Preconditions;
12 import com.google.common.util.concurrent.CheckedFuture;
13 import com.google.common.util.concurrent.SettableFuture;
14 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
15 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
18 public class DataExists extends AbstractRead<Boolean> {
19 private static final long serialVersionUID = 1L;
24 public DataExists(final YangInstanceIdentifier path, final short version) {
29 public CheckedFuture<Boolean, ReadFailedException> apply(DOMStoreReadTransaction readDelegate) {
30 return readDelegate.exists(getPath());
34 public void processResponse(Object response, SettableFuture<Boolean> returnFuture) {
35 if (DataExistsReply.isSerializedType(response)) {
36 returnFuture.set(Boolean.valueOf(DataExistsReply.fromSerializable(response).exists()));
38 returnFuture.setException(new ReadFailedException("Invalid response checking exists for path "
44 protected AbstractRead<Boolean> newInstance(short withVersion) {
45 return new DataExists(getPath(), withVersion);
48 public static DataExists fromSerializable(final Object serializable) {
49 Preconditions.checkArgument(serializable instanceof DataExists);
50 return (DataExists)serializable;
53 public static boolean isSerializedType(Object message) {
54 return message instanceof DataExists;