org.redisson.api.StreamMessageId Maven / Gradle / Ivy
/**
* Copyright 2018 Nikita Koksharov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.redisson.api;
/**
* Stream ID used by Redis Stream
*
* @author Nikita Koksharov
*
*/
public class StreamMessageId {
/**
* Defines minimal id. Used in {@link RStream#range} and {@link RStreamAsync#rangeAsync} methods
*/
public static final StreamMessageId MIN = new StreamMessageId(-1);
/**
* Defines maximal id. Used in {@link RStream#range} and {@link RStreamAsync#rangeAsync} methods
*/
public static final StreamMessageId MAX = new StreamMessageId(-1);
/**
* Defines latest id to receive Stream entries added since method invocation.
*
* Used in {@link RStream#read} and {@link RStreamAsync#readAsync} methods
*/
public static final StreamMessageId NEWEST = new StreamMessageId(-1);
private long id0;
private long id1;
public StreamMessageId(long id0) {
super();
this.id0 = id0;
}
public StreamMessageId(long id0, long id1) {
super();
this.id0 = id0;
this.id1 = id1;
}
/**
* Returns first part of ID
*
* @return first part of ID
*/
public long getId0() {
return id0;
}
/**
* Returns second part of ID
*
* @return second part of ID
*/
public long getId1() {
return id1;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (int) (id0 ^ (id0 >>> 32));
result = prime * result + (int) (id1 ^ (id1 >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
StreamMessageId other = (StreamMessageId) obj;
if (id0 != other.id0)
return false;
if (id1 != other.id1)
return false;
return true;
}
@Override
public String toString() {
if (this == NEWEST) {
return "$";
}
if (this == MIN) {
return "-";
}
if (this == MAX) {
return "+";
}
return id0 + "-" + id1;
}
}