data.h

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/*
 * SwatDB
 *
 * @authors: See Contributors.doc for code contributors
 *
 * Copyright (c) 2020 Swarthmore College Computer Science Department
 * Swarthmore PA, Professors Tia Newhall, Ameet Soni
 */
 
#ifndef _SWATDB_DATA_H_
#define  _SWATDB_DATA_H_
 
#include "swatdb_types.h"
 
class Data {
 
  friend class Key;
  friend class Record;
 
  public:
 
    Data() = delete;
 
    Data(const Data& other) = delete;
 
    Data& operator=(const Data& other) = delete;
 
    Data(std::uint32_t size, const char* other_data);
 
    Data(std::uint32_t size, std::uint32_t capacity);
 
    Data(std::uint32_t capacity);
 
    ~Data();
 
    char* getData();
 
    std::uint32_t getSize();
 
    void setSize(std::uint32_t new_size);
 
    std::uint32_t getCapacity();
 
  private:
 
 
    static void _copyDataValue(Data *src, std::uint32_t src_offset, 
        Data *dst, std::uint32_t dst_offset, std::uint32_t  len); 
 
    static void _copyFromBuff(char *src, char *dst, std::uint32_t len);
 
    static bool _compareFieldValue(Data *data1, FieldId field_id1, 
        FieldId num_fields1, Data *data2, FieldId field_id2, 
        FieldId num_fields2, Comp comp_op, FieldType field_type); 
 
    static bool  _compareFromBuff(char *data1,  char *data2, Comp comp_op, 
        FieldType field_type, FieldOffset length1, FieldOffset length2); 
 
    void _getOffsetLength(FieldId field_id, FieldOffset *offset, 
        FieldOffset *length, FieldId num_fields);
  
    char* data;
 
    std::uint32_t size;
 
    std::uint32_t capacity;
 
};
 
#endif