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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.spark.sql.execution.streaming
/**
* An offset is a monotonically increasing metric used to track progress in the computation of a
* stream. An [[Offset]] must be comparable, and the result of `compareTo` must be consistent
* with `equals` and `hashcode`.
*/
trait Offset extends Serializable {
/**
* Returns a negative integer, zero, or a positive integer as this object is less than, equal to,
* or greater than the specified object.
*/
def compareTo(other: Offset): Int
def >(other: Offset): Boolean = compareTo(other) > 0
def <(other: Offset): Boolean = compareTo(other) < 0
def <=(other: Offset): Boolean = compareTo(other) <= 0
def >=(other: Offset): Boolean = compareTo(other) >= 0
}
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