| /* |
| * 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.beam.runners.dataflow.worker.graph; |
| |
| import static org.apache.beam.vendor.guava.v20_0.com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.api.services.dataflow.model.MultiOutputInfo; |
| import com.google.auto.value.AutoValue; |
| |
| /** Container class for different types of graph edges. All edges only have reference equality. */ |
| public class Edges { |
| /** Base class for graph edges. All edges only have reference equality. */ |
| public abstract static class Edge implements Cloneable { |
| @Override |
| public final boolean equals(Object obj) { |
| return this == obj; |
| } |
| |
| @Override |
| public final int hashCode() { |
| return super.hashCode(); |
| } |
| |
| @Override |
| public Edge clone() { |
| try { |
| return (Edge) super.clone(); |
| } catch (CloneNotSupportedException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| } |
| |
| /** An edge with no parameters. */ |
| @AutoValue |
| public abstract static class DefaultEdge extends Edge { |
| public static DefaultEdge create() { |
| return new AutoValue_Edges_DefaultEdge(); |
| } |
| |
| @Override |
| public DefaultEdge clone() { |
| return (DefaultEdge) super.clone(); |
| } |
| } |
| |
| /** An edge that stores a {@link MultiOutputInfo}. */ |
| @AutoValue |
| public abstract static class MultiOutputInfoEdge extends Edge { |
| public static MultiOutputInfoEdge create(MultiOutputInfo multiOutputInfo) { |
| checkNotNull(multiOutputInfo); |
| return new AutoValue_Edges_MultiOutputInfoEdge(multiOutputInfo); |
| } |
| |
| public abstract MultiOutputInfo getMultiOutputInfo(); |
| |
| @Override |
| public MultiOutputInfoEdge clone() { |
| return (MultiOutputInfoEdge) super.clone(); |
| } |
| } |
| |
| /** |
| * An edge which represents an ordering relationship where the predecessor must occur before the |
| * successor. |
| */ |
| @AutoValue |
| public abstract static class HappensBeforeEdge extends Edge { |
| public static HappensBeforeEdge create() { |
| return new AutoValue_Edges_HappensBeforeEdge(); |
| } |
| |
| @Override |
| public HappensBeforeEdge clone() { |
| return (HappensBeforeEdge) super.clone(); |
| } |
| } |
| |
| // Hide visibility to prevent instantiation |
| private Edges() {} |
| } |