recordio.hh
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上传日期:2018-01-08
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- /**
- * 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.
- */
- #ifndef RECORDIO_HH_
- #define RECORDIO_HH_
- #include <stdio.h>
- #include <stdint.h>
- #include <iostream>
- #include <cstring>
- #include <string>
- #include <vector>
- #include <map>
- #include <bitset>
- namespace hadoop {
-
- class InStream {
- public:
- virtual ssize_t read(void *buf, size_t buflen) = 0;
- virtual ~InStream() {}
- };
- class OutStream {
- public:
- virtual ssize_t write(const void *buf, size_t len) = 0;
- virtual ~OutStream() {}
- };
- class IArchive;
- class OArchive;
- class Record {
- public:
- virtual void serialize(OArchive& archive, const char* tag) const = 0;
- virtual void deserialize(IArchive& archive, const char* tag) = 0;
- virtual const std::string& type() const = 0;
- virtual const std::string& signature() const = 0;
- virtual ~Record() {}
- };
- enum RecFormat { kBinary, kXML, kCSV };
- class RecordReader {
- private:
- IArchive* mpArchive;
- public:
- RecordReader(InStream& stream, RecFormat f);
- virtual void read(hadoop::Record& record);
- virtual ~RecordReader();
- };
- class RecordWriter {
- private:
- OArchive* mpArchive;
- public:
- RecordWriter(OutStream& stream, RecFormat f);
- virtual void write(const hadoop::Record& record);
- virtual ~RecordWriter();
- };
- }; // end namspace hadoop
- #include "archive.hh"
- #include "exception.hh"
- #endif /*RECORDIO_HH_*/