| /** |
| * 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 com.datatorrent.stram.api; |
| |
| import java.util.Comparator; |
| |
| import com.datatorrent.api.annotation.Stateless; |
| import com.datatorrent.bufferserver.util.Codec; |
| |
| /** |
| * <p>Checkpoint class.</p> |
| * |
| * @since 0.9.4 |
| */ |
| public class Checkpoint implements com.datatorrent.api.Stats.Checkpoint |
| { |
| /** |
| * WindowId used to store the state of the operator which has not processed a single tuple. |
| */ |
| public final long windowId; |
| public final int applicationWindowCount; |
| public final int checkpointWindowCount; |
| |
| public Checkpoint(long windowId, int appCount, int checkpointCount) |
| { |
| this.windowId = windowId; |
| this.applicationWindowCount = appCount; |
| this.checkpointWindowCount = checkpointCount; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return '{' + Codec.getStringWindowId(windowId) + ", " + applicationWindowCount + ", " + checkpointWindowCount + '}'; |
| } |
| |
| public static Checkpoint min(Checkpoint first, Checkpoint second) |
| { |
| if (first.windowId < second.windowId) { |
| return first; |
| } |
| return second; |
| } |
| |
| public static Checkpoint max(Checkpoint first, Checkpoint second) |
| { |
| if (first.windowId < second.windowId) { |
| return second; |
| } |
| return first; |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| int hash = 7; |
| hash = 29 * hash + (int)(this.windowId ^ (this.windowId >>> 32)); |
| hash = 29 * hash + this.applicationWindowCount; |
| hash = 29 * hash + this.checkpointWindowCount; |
| return hash; |
| } |
| |
| @Override |
| public boolean equals(Object obj) |
| { |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| final Checkpoint other = (Checkpoint)obj; |
| if (this.windowId != other.windowId) { |
| return false; |
| } |
| if (this.applicationWindowCount != other.applicationWindowCount) { |
| return false; |
| } |
| if (this.checkpointWindowCount != other.checkpointWindowCount) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public long getWindowId() |
| { |
| return windowId; |
| } |
| |
| public static class CheckpointComparator implements Comparator<Checkpoint> |
| { |
| @Override |
| public int compare(Checkpoint o1, Checkpoint o2) |
| { |
| return Long.compare(o1.windowId, o2.windowId); |
| } |
| } |
| |
| @SuppressWarnings("FieldNameHidesFieldInSuperclass") |
| public static final Checkpoint INITIAL_CHECKPOINT = new Checkpoint(Stateless.WINDOW_ID, 0, 0); |
| private static final long serialVersionUID = 201402152116L; |
| } |