1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.giraph.types.ops; 19 20 import java.io.DataInput; 21 import java.io.IOException; 22 23 import org.apache.giraph.types.ops.collections.array.WArrayList; 24 25 26 /** 27 * Type operations, allowing working generically with types, 28 * but still having efficient code. 29 * 30 * Using any of the provided operations should lead to no boxing/unboxing. 31 * 32 * Useful generic wrappers to fastutil libraries are provided, 33 * so that you can look at them generically. 34 * 35 * @param <T> Type 36 */ 37 public interface PrimitiveTypeOps<T> extends TypeOps<T> { 38 // primitive collections 39 /** 40 * Create WArrayList of type T. 41 * @return WArrayList 42 */ 43 WArrayList<T> createArrayList(); 44 45 /** 46 * Create WArrayList of type T, given capacity. 47 * @param capacity Capacity 48 * @return WArrayList 49 */ 50 WArrayList<T> createArrayList(int capacity); 51 52 /** 53 * Create WArrayList of type T by reading it from given input. 54 * @param in Input 55 * @return WArrayList 56 */ 57 WArrayList<T> readNewArrayList(DataInput in) throws IOException; 58 }