com.twitter.heron.streamlet.Window Maven / Gradle / Ivy
// Copyright 2017 Twitter. All rights reserved.
//
// 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 com.twitter.heron.streamlet;
import java.io.Serializable;
/**
* Window is a container containing information about a particular window.
* Transformations that depend on Windowing, pass the window information
* inside their streamlets using this container.
*/
public final class Window implements Serializable {
private static final long serialVersionUID = 5103471810104775854L;
private long startTimeMs;
private long endTimeMs;
private long count;
Window() {
// nothing really
}
public Window(long startTimeMs, long endTimeMs, long count) {
this.startTimeMs = startTimeMs;
this.endTimeMs = endTimeMs;
this.count = count;
}
public long getStartTime() {
return startTimeMs;
}
public long getEndTime() {
return endTimeMs;
}
public long getCount() {
return count;
}
@Override
public String toString() {
return "{WindowStart: " + String.valueOf(startTimeMs) + " WindowEnd: "
+ String.valueOf(endTimeMs) + " Count: " + String.valueOf(count) + " }";
}
}