| /** |
| * 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.trident.tuple; |
| |
| import java.util.AbstractList; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class ConsList extends AbstractList<Object> { |
| List<Object> _elems; |
| Object _first; |
| |
| // for kryo |
| private ConsList() { |
| _elems = new ArrayList<>(); |
| } |
| |
| public ConsList(Object o, List<Object> elems) { |
| _elems = elems; |
| _first = o; |
| } |
| |
| @Override |
| public Object get(int i) { |
| if (i == 0) { |
| return _first; |
| } else { |
| return _elems.get(i - 1); |
| } |
| } |
| |
| @Override |
| public int size() { |
| return _first == null ? _elems.size() : _elems.size() + 1; |
| } |
| |
| // for kryo |
| @Override |
| public void add(int index, Object element) { |
| if (index == 0) { |
| _first = element; |
| } else { |
| _elems.add(index - 1, element); |
| } |
| } |
| } |