|  | // Copyright (C) 2018 The Android Open Source Project | 
|  | // | 
|  | // 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.google.gerrit.elasticsearch.bulk; | 
|  |  | 
|  | import java.util.ArrayList; | 
|  | import java.util.List; | 
|  |  | 
|  | public abstract class BulkRequest { | 
|  |  | 
|  | private final List<BulkRequest> requests = new ArrayList<>(); | 
|  |  | 
|  | protected BulkRequest() { | 
|  | add(this); | 
|  | } | 
|  |  | 
|  | public BulkRequest add(BulkRequest request) { | 
|  | requests.add(request); | 
|  | return this; | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public String toString() { | 
|  | StringBuilder builder = new StringBuilder(); | 
|  | for (BulkRequest request : requests) { | 
|  | builder.append(request.getRequest()); | 
|  | } | 
|  | return builder.toString(); | 
|  | } | 
|  |  | 
|  | protected abstract String getRequest(); | 
|  | } |