schema.h

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#ifndef  _SWATDB_SCHEMMA_H_
#define  _SWATDB_SCHEMMA_H_
 
 
 
#include <string>
#include <vector>
#include <unordered_map>
#include <iostream>
#include <fstream>
#include "swatdb_types.h"
 
class Schema {
  friend class IndexFile;
  friend class RelOpsManager;
  friend class Select;
  friend class Record;
  friend class Key;
  friend class SearchKeyFormat;
  friend class SwatDB;
  friend class FileManager;
 
  public:
    Schema() = delete;
 
    //Schema& operator=(const Schema& other) = delete;
 
    Schema(const Schema& other);
    Schema(std::vector<FieldEntry> field_list, 
        std::vector<std::string> primary_key);
 
    Schema(std::ifstream *in_file);
 
    ~Schema(){}
 
    std::string getFieldName(FieldId field_id);
    
    FieldId getFieldId(std::string field_name);
    
    FieldType getFieldType(FieldId field_id);
    
    void saveToFile(std::ofstream *out_file);
 
    void printFields();
 
  private:
 
    std::unordered_map<std::string, FieldId> field_map;
    
    std::vector<FieldEntry> field_list;
 
    std::vector<FieldId> primary_key;
 
 
};
 
#endif