#ifndef CPPDB_BACKEND_H
#define CPPDB_BACKEND_H
#include <iosfwd>
#include <ctime>
#include <string>
namespace cppdb {
namespace backend {
class result {
public:
typedef enum {
last_row_reached,
next_row_exists,
next_row_unknown
} next_row;
virtual ~result() {}
virtual next_row has_next() = 0;
virtual bool next() = 0;
virtual bool fetch(int col,short &v) = 0;
virtual bool fetch(int col,unsigned short &v) = 0;
virtual bool fetch(int col,int &v) = 0;
virtual bool fetch(int col,unsigned &v) = 0;
virtual bool fetch(int col,long &v) = 0;
virtual bool fetch(int col,unsigned long &v) = 0;
virtual bool fetch(int col,long long &v) = 0;
virtual bool fetch(int col,unsigned long long &v) = 0;
virtual bool fetch(int col,float &v) = 0;
virtual bool fetch(int col,double &v) = 0;
virtual bool fetch(int col,long double &v) = 0;
virtual bool fetch(int col,std::string &v) = 0;
virtual bool fetch(int col,std::ostream &v) = 0;
virtual bool fetch(int col,std::tm &v) = 0;
virtual bool is_null(int col) = 0;
virtual int cols() = 0;
virtual int name_to_column(std::string const &) = 0;
virtual std::string column_to_name(int) = 0;
};
class statement {
public:
virtual ~statement() {}
virtual void reset() = 0;
virtual void bind(int col,std::string const &) = 0;
virtual void bind(int col,char const *s) = 0;
virtual void bind(int col,char const *b,char const *e) = 0;
virtual void bind(int col,std::tm const &) = 0;
virtual void bind(int col,std::istream const &) = 0;
virtual void bind(int col,int v) = 0;
virtual void bind(int col,unsigned v) = 0;
virtual void bind(int col,long v) = 0;
virtual void bind(int col,unsigned long v) = 0;
virtual void bind(int col,long long v) = 0;
virtual void bind(int col,unsigned long long v) = 0;
virtual void bind(int col,double v) = 0;
virtual void bind(int col,long double v) = 0;
virtual void bind_null(int col) = 0;
virtual void bind_sequence(long long &value,std::string const &sequence) = 0;
virtual unsigned long long affected() = 0;
virtual result *query() = 0;
virtual void exec() = 0;
};
class connection {
public:
virtual ~connection() {}
virtual void begin() = 0;
virtual void commit() = 0;
virtual void rollback() = 0;
virtual statement *prepare(std::string const &) = 0;
virtual std::string escape(std::string const &) = 0;
virtual std::string escape(char const *s) = 0;
virtual std::string escape(char const *b,char const *e) = 0;
};
class driver {
public:
virtual ~driver() {}
virtual std::string name() = 0;
virtual connection *open(std::string const &connection_string) = 0;
};
} // backend
} // cppdb
#endif
