[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 RECORDIO_HH_ |
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| 20 | #define RECORDIO_HH_ |
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| 21 | |
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| 22 | #include <stdio.h> |
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| 23 | #include <stdint.h> |
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| 24 | #include <iostream> |
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| 25 | #include <cstring> |
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| 26 | #include <string> |
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| 27 | #include <vector> |
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| 28 | #include <map> |
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| 29 | #include <bitset> |
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| 30 | |
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| 31 | namespace hadoop { |
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| 32 | |
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| 33 | class InStream { |
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| 34 | public: |
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| 35 | virtual ssize_t read(void *buf, size_t buflen) = 0; |
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| 36 | virtual ~InStream() {} |
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| 37 | }; |
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| 38 | |
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| 39 | class OutStream { |
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| 40 | public: |
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| 41 | virtual ssize_t write(const void *buf, size_t len) = 0; |
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| 42 | virtual ~OutStream() {} |
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| 43 | }; |
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| 44 | |
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| 45 | class IArchive; |
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| 46 | class OArchive; |
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| 47 | |
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| 48 | class Record { |
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| 49 | public: |
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| 50 | virtual void serialize(OArchive& archive, const char* tag) const = 0; |
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| 51 | virtual void deserialize(IArchive& archive, const char* tag) = 0; |
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| 52 | virtual const std::string& type() const = 0; |
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| 53 | virtual const std::string& signature() const = 0; |
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| 54 | virtual ~Record() {} |
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| 55 | }; |
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| 56 | |
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| 57 | enum RecFormat { kBinary, kXML, kCSV }; |
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| 58 | |
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| 59 | class RecordReader { |
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| 60 | private: |
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| 61 | IArchive* mpArchive; |
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| 62 | public: |
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| 63 | RecordReader(InStream& stream, RecFormat f); |
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| 64 | virtual void read(hadoop::Record& record); |
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| 65 | virtual ~RecordReader(); |
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| 66 | }; |
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| 67 | |
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| 68 | class RecordWriter { |
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| 69 | private: |
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| 70 | OArchive* mpArchive; |
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| 71 | public: |
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| 72 | RecordWriter(OutStream& stream, RecFormat f); |
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| 73 | virtual void write(const hadoop::Record& record); |
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| 74 | virtual ~RecordWriter(); |
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| 75 | }; |
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| 76 | }; // end namspace hadoop |
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| 77 | |
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| 78 | #include "archive.hh" |
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| 79 | #include "exception.hh" |
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| 80 | |
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| 81 | #endif /*RECORDIO_HH_*/ |
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| 82 | |
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