| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| BasicCollectionsUtils |
|
| 0.0;0 |
| 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.collections; | |
| 19 | ||
| 20 | import org.apache.giraph.types.ops.PrimitiveIdTypeOps; | |
| 21 | import org.apache.giraph.types.ops.TypeOpsUtils; | |
| 22 | import org.apache.giraph.types.ops.collections.Basic2ObjectMap.BasicObject2ObjectOpenHashMap; | |
| 23 | import org.apache.hadoop.io.Writable; | |
| 24 | ||
| 25 | /** | |
| 26 | * Utility functions for constructing basic collections | |
| 27 | */ | |
| 28 | public class BasicCollectionsUtils { | |
| 29 | /** No instances */ | |
| 30 | 0 | private BasicCollectionsUtils() { } |
| 31 | ||
| 32 | /** | |
| 33 | * Construct OpenHashMap with primitive keys. | |
| 34 | * | |
| 35 | * @param <I> Vertex id type | |
| 36 | * @param <V> Value type | |
| 37 | * @param idClass Class type | |
| 38 | * @return map | |
| 39 | */ | |
| 40 | public static <I extends Writable, V> | |
| 41 | Basic2ObjectMap<I, V> create2ObjectMap(Class<I> idClass) { | |
| 42 | 0 | return create2ObjectMap(idClass, null, null); |
| 43 | } | |
| 44 | ||
| 45 | /** | |
| 46 | * Construct OpenHashMap with primitive keys. | |
| 47 | * | |
| 48 | * If keyWriter/valueWriter are not provided, | |
| 49 | * readFields/write will throw an Exception, if called. | |
| 50 | * | |
| 51 | * @param <I> Vertex id type | |
| 52 | * @param <V> Value type | |
| 53 | * @param idClass Class type | |
| 54 | * @param keyWriter writer for keys | |
| 55 | * @param valueWriter writer for values | |
| 56 | * @return map | |
| 57 | */ | |
| 58 | public static <I extends Writable, V> | |
| 59 | Basic2ObjectMap<I, V> create2ObjectMap( | |
| 60 | Class<I> idClass, | |
| 61 | WritableWriter<I> keyWriter, | |
| 62 | WritableWriter<V> valueWriter | |
| 63 | ) { | |
| 64 | 0 | PrimitiveIdTypeOps<I> idTypeOps = TypeOpsUtils.getPrimitiveIdTypeOpsOrNull( |
| 65 | idClass | |
| 66 | ); | |
| 67 | 0 | if (idTypeOps != null) { |
| 68 | 0 | return idTypeOps.create2ObjectOpenHashMap(valueWriter); |
| 69 | } else { | |
| 70 | 0 | return new BasicObject2ObjectOpenHashMap<>(keyWriter, valueWriter); |
| 71 | } | |
| 72 | } | |
| 73 | } |