| /** |
| * 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.storm.streams; |
| |
| import java.io.Serializable; |
| import org.apache.storm.topology.BoltDeclarer; |
| import org.apache.storm.tuple.Fields; |
| |
| abstract class GroupingInfo implements Serializable { |
| private final Fields fields; |
| |
| private GroupingInfo() { |
| this(null); |
| } |
| |
| private GroupingInfo(Fields fields) { |
| this.fields = fields; |
| } |
| |
| public static GroupingInfo shuffle() { |
| return new GroupingInfo() { |
| @Override |
| public void declareGrouping(BoltDeclarer declarer, String componentId, String streamId, Fields fields) { |
| declarer.shuffleGrouping(componentId, streamId); |
| } |
| }; |
| } |
| |
| public static GroupingInfo fields(Fields fields) { |
| return new GroupingInfo(fields) { |
| @Override |
| public void declareGrouping(BoltDeclarer declarer, String componentId, String streamId, Fields fields) { |
| declarer.fieldsGrouping(componentId, streamId, fields); |
| } |
| }; |
| } |
| |
| public static GroupingInfo global() { |
| return new GroupingInfo() { |
| @Override |
| public void declareGrouping(BoltDeclarer declarer, String componentId, String streamId, Fields fields) { |
| declarer.globalGrouping(componentId, streamId); |
| } |
| }; |
| } |
| |
| public static GroupingInfo all() { |
| return new GroupingInfo() { |
| @Override |
| public void declareGrouping(BoltDeclarer declarer, String componentId, String streamId, Fields fields) { |
| declarer.allGrouping(componentId, streamId); |
| } |
| }; |
| } |
| |
| public abstract void declareGrouping(BoltDeclarer declarer, String componentId, String streamId, Fields fields); |
| |
| public Fields getFields() { |
| return fields; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| |
| GroupingInfo that = (GroupingInfo) o; |
| |
| return fields != null ? fields.equals(that.fields) : that.fields == null; |
| |
| } |
| |
| @Override |
| public int hashCode() { |
| return fields != null ? fields.hashCode() : 0; |
| } |
| |
| @Override |
| public String toString() { |
| return "GroupingInfo{" |
| + "fields=" + fields |
| + '}'; |
| } |
| } |