2 * ============LICENSE_START==========================================
4 * ===================================================================
5 * Copyright (c) 2017 AT&T Intellectual Property
6 * ===================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * ============LICENSE_END=============================================
20 * ====================================================================
22 package org.onap.music.lockingservice;
24 import org.onap.music.eelf.logging.EELFLoggerDelegate;
27 * Represents an ephemeral znode name which has an ordered sequence number and can be sorted in
31 class ZNodeName implements Comparable<ZNodeName> {
32 private final String name;
33 private String prefix;
34 private int sequence = -1;
35 private EELFLoggerDelegate LOG = EELFLoggerDelegate.getLogger(ZNodeName.class);
37 public ZNodeName(String name) {
39 throw new NullPointerException("id cannot be null");
43 int idx = name.lastIndexOf('-');
45 this.prefix = name.substring(0, idx);
47 this.sequence = Integer.parseInt(name.substring(idx + 1));
48 // If an exception occurred we misdetected a sequence suffix,
50 } catch (NumberFormatException e) {
51 LOG.error(EELFLoggerDelegate.errorLogger,"Number format exception for " + idx, e);
52 } catch (ArrayIndexOutOfBoundsException e) {
53 LOG.error(EELFLoggerDelegate.errorLogger,"Array out of bounds for " + idx, e);
59 public String toString() {
60 return name.toString();
64 public boolean equals(Object o) {
67 if (o == null || getClass() != o.getClass())
70 ZNodeName sequence = (ZNodeName) o;
72 if (!name.equals(sequence.name))
79 public int hashCode() {
80 return name.hashCode() + 37;
83 public int compareTo(ZNodeName that) {
84 int answer = this.prefix.compareTo(that.prefix);
86 int s1 = this.sequence;
87 int s2 = that.sequence;
88 if (s1 == -1 && s2 == -1) {
89 return this.name.compareTo(that.name);
91 answer = s1 == -1 ? 1 : s2 == -1 ? -1 : s1 - s2;
97 * Returns the name of the znode
99 public String getName() {
104 * Returns the sequence number
106 public int getZNodeName() {
111 * Returns the text prefix before the sequence number
113 public String getPrefix() {