[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | |
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| 19 | #ifndef ARCHIVE_HH_ |
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| 20 | #define ARCHIVE_HH_ |
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| 21 | #include "recordio.hh" |
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| 22 | |
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| 23 | namespace hadoop { |
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| 24 | |
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| 25 | class Index { |
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| 26 | public: |
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| 27 | virtual bool done() = 0; |
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| 28 | virtual void incr() = 0; |
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| 29 | virtual ~Index() {} |
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| 30 | }; |
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| 31 | |
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| 32 | class IArchive { |
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| 33 | public: |
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| 34 | virtual void deserialize(int8_t& t, const char* tag) = 0; |
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| 35 | virtual void deserialize(bool& t, const char* tag) = 0; |
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| 36 | virtual void deserialize(int32_t& t, const char* tag) = 0; |
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| 37 | virtual void deserialize(int64_t& t, const char* tag) = 0; |
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| 38 | virtual void deserialize(float& t, const char* tag) = 0; |
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| 39 | virtual void deserialize(double& t, const char* tag) = 0; |
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| 40 | virtual void deserialize(std::string& t, const char* tag) = 0; |
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| 41 | virtual void deserialize(std::string& t, size_t& len, const char* tag) = 0; |
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| 42 | virtual void startRecord(hadoop::Record& s, const char* tag) = 0; |
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| 43 | virtual void endRecord(hadoop::Record& s, const char* tag) = 0; |
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| 44 | virtual Index* startVector(const char* tag) = 0; |
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| 45 | virtual void endVector(Index* idx, const char* tag) = 0; |
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| 46 | virtual Index* startMap(const char* tag) = 0; |
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| 47 | virtual void endMap(Index* idx, const char* tag) = 0; |
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| 48 | virtual void deserialize(hadoop::Record& s, const char* tag) { |
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| 49 | s.deserialize(*this, tag); |
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| 50 | } |
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| 51 | template <typename T> |
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| 52 | void deserialize(std::vector<T>& v, const char* tag) { |
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| 53 | Index* idx = startVector(tag); |
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| 54 | while (!idx->done()) { |
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| 55 | T t; |
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| 56 | deserialize(t, tag); |
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| 57 | v.push_back(t); |
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| 58 | idx->incr(); |
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| 59 | } |
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| 60 | endVector(idx, tag); |
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| 61 | } |
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| 62 | template <typename K, typename V> |
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| 63 | void deserialize(std::map<K,V>& v, const char* tag) { |
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| 64 | Index* idx = startMap(tag); |
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| 65 | while (!idx->done()) { |
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| 66 | K key; |
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| 67 | deserialize(key, tag); |
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| 68 | V value; |
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| 69 | deserialize(value, tag); |
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| 70 | v[key] = value; |
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| 71 | idx->incr(); |
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| 72 | } |
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| 73 | endMap(idx, tag); |
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| 74 | } |
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| 75 | virtual ~IArchive() {} |
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| 76 | }; |
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| 77 | |
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| 78 | class OArchive { |
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| 79 | public: |
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| 80 | virtual void serialize(int8_t t, const char* tag) = 0; |
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| 81 | virtual void serialize(bool t, const char* tag) = 0; |
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| 82 | virtual void serialize(int32_t t, const char* tag) = 0; |
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| 83 | virtual void serialize(int64_t t, const char* tag) = 0; |
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| 84 | virtual void serialize(float t, const char* tag) = 0; |
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| 85 | virtual void serialize(double t, const char* tag) = 0; |
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| 86 | virtual void serialize(const std::string& t, const char* tag) = 0; |
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| 87 | virtual void serialize(const std::string& t, size_t len, const char* tag) = 0; |
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| 88 | virtual void startRecord(const hadoop::Record& s, const char* tag) = 0; |
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| 89 | virtual void endRecord(const hadoop::Record& s, const char* tag) = 0; |
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| 90 | virtual void startVector(size_t len, const char* tag) = 0; |
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| 91 | virtual void endVector(size_t len, const char* tag) = 0; |
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| 92 | virtual void startMap(size_t len, const char* tag) = 0; |
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| 93 | virtual void endMap(size_t len, const char* tag) = 0; |
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| 94 | virtual void serialize(const hadoop::Record& s, const char* tag) { |
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| 95 | s.serialize(*this, tag); |
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| 96 | } |
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| 97 | template <typename T> |
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| 98 | void serialize(const std::vector<T>& v, const char* tag) { |
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| 99 | startVector(v.size(), tag); |
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| 100 | if (v.size()>0) { |
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| 101 | for (size_t cur = 0; cur<v.size(); cur++) { |
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| 102 | serialize(v[cur], tag); |
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| 103 | } |
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| 104 | } |
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| 105 | endVector(v.size(), tag); |
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| 106 | } |
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| 107 | template <typename K, typename V> |
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| 108 | void serialize(const std::map<K,V>& v, const char* tag) { |
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| 109 | startMap(v.size(), tag); |
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| 110 | if (v.size()>0) { |
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| 111 | typedef typename std::map<K,V>::const_iterator CI; |
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| 112 | for (CI cur = v.begin(); cur!=v.end(); cur++) { |
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| 113 | serialize(cur->first, tag); |
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| 114 | serialize(cur->second, tag); |
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| 115 | } |
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| 116 | } |
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| 117 | endMap(v.size(), tag); |
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| 118 | } |
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| 119 | virtual ~OArchive() {} |
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| 120 | }; |
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| 121 | }; // end namespace hadoop |
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| 122 | #endif /*ARCHIVE_HH_*/ |
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