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.identifiers;
11 import com.google.common.base.Preconditions;
13 public class TransactionIdentifier {
14 private static final String TX_SEPARATOR = "-txn-";
16 private final String memberName;
17 private final long counter;
18 private String stringRepresentation;
20 public TransactionIdentifier(String memberName, long counter) {
21 this.memberName = Preconditions.checkNotNull(memberName, "memberName should not be null");
22 this.counter = counter;
26 public boolean equals(Object o) {
30 if (o == null || getClass() != o.getClass()) {
34 TransactionIdentifier that = (TransactionIdentifier) o;
36 if (counter != that.counter) {
39 if (!memberName.equals(that.memberName)) {
47 public int hashCode() {
48 int result = memberName.hashCode();
49 result = 31 * result + (int) (counter ^ (counter >>> 32));
54 public String toString() {
55 if(stringRepresentation == null) {
56 stringRepresentation = new StringBuilder(memberName.length() + TX_SEPARATOR.length() + 10).
57 append(memberName).append(TX_SEPARATOR).append(counter).toString();
60 return stringRepresentation;