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TimeSeriesKey.java
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TimeSeriesKey.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.samza.operators.impl.store;
/**
* The store key used in the {@link TimeSeriesStore} to uniquely identify a row.
*/
public class TimeSeriesKey<K> {
private final K key;
private final long timestamp;
// allows a maximum of 2 Billion entries per window per key. maybe, long?
private final int seqNum;
public TimeSeriesKey(K k, long time, int seq) {
key = k;
timestamp = time;
seqNum = seq;
}
public K getKey() {
return key;
}
public long getTimestamp() {
return timestamp;
}
public int getSeqNum() {
return seqNum;
}
@Override
public int hashCode() {
int result = key != null ? key.hashCode() : 0;
result = 31 * result + (int) (timestamp ^ (timestamp >>> 32));
result = 31 * result + seqNum;
return result;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || !getClass().equals(o.getClass())) return false;
TimeSeriesKey<?> that = (TimeSeriesKey<?>) o;
if (timestamp != that.timestamp) return false;
if (seqNum != that.seqNum) return false;
return key != null ? key.equals(that.key) : that.key == null;
}
@Override
public String toString() {
return "TimeSeriesKey{" +
"key=" + key +
", timestamp=" + timestamp +
", seqNum=" + seqNum +
'}';
}
}