| /* |
| * 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.gearpump.streaming.dsl.window.impl |
| |
| import java.time.Instant |
| |
| import org.apache.gearpump.Time.MilliSeconds |
| |
| object Window { |
| def ofEpochMilli(startTime: MilliSeconds, endTime: MilliSeconds): Window = { |
| Window(Instant.ofEpochMilli(startTime), Instant.ofEpochMilli(endTime)) |
| } |
| } |
| |
| /** |
| * A window unit including startTime and excluding endTime. |
| */ |
| case class Window(startTime: Instant, endTime: Instant) extends Comparable[Window] { |
| |
| /** |
| * Returns whether this window intersects the given window. |
| */ |
| def intersects(other: Window): Boolean = { |
| startTime.isBefore(other.endTime) && endTime.isAfter(other.startTime) |
| } |
| |
| /** |
| * Returns the minimal window that includes both this window and |
| * the given window. |
| */ |
| def span(other: Window): Window = { |
| Window(Instant.ofEpochMilli(Math.min(startTime.toEpochMilli, other.startTime.toEpochMilli)), |
| Instant.ofEpochMilli(Math.max(endTime.toEpochMilli, other.endTime.toEpochMilli))) |
| } |
| |
| override def compareTo(o: Window): Int = { |
| val ret = startTime.compareTo(o.startTime) |
| if (ret != 0) { |
| ret |
| } else { |
| endTime.compareTo(o.endTime) |
| } |
| } |
| } |
| |
| |