2 * Copyright (c) 2015 Brocade Communications 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
8 package org.opendaylight.controller.cluster.datastore;
10 import com.google.common.util.concurrent.ListenableFuture;
11 import java.util.Collections;
12 import java.util.List;
13 import org.opendaylight.mdsal.common.api.CommitInfo;
14 import org.opendaylight.yangtools.yang.common.Empty;
15 import scala.concurrent.Future;
18 * A {@link org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort}
19 * instance given out for empty transactions.
21 final class NoOpDOMStoreThreePhaseCommitCohort extends AbstractThreePhaseCommitCohort<Object> {
22 static final NoOpDOMStoreThreePhaseCommitCohort INSTANCE = new NoOpDOMStoreThreePhaseCommitCohort();
24 private NoOpDOMStoreThreePhaseCommitCohort() {
25 // Hidden to prevent instantiation
29 public ListenableFuture<Boolean> canCommit() {
30 return IMMEDIATE_BOOLEAN_SUCCESS;
34 public ListenableFuture<Empty> preCommit() {
35 return IMMEDIATE_EMPTY_SUCCESS;
39 public ListenableFuture<Empty> abort() {
40 return IMMEDIATE_EMPTY_SUCCESS;
44 public ListenableFuture<CommitInfo> commit() {
45 return CommitInfo.emptyFluentFuture();
49 List<Future<Object>> getCohortFutures() {
50 return Collections.emptyList();