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/*
* Copyright (C) 2004, Leo Seib, Hannover
*
* Project:Dataset C++ Dynamic Library
* Module: FieldValue class and result sets classes header file
* Author: Leo Seib E-Mail: leoseib@web.de
* Begin: 5/04/2002
*
* SPDX-License-Identifier: MIT
* See LICENSES/README.md for more information.
*/
#pragma once
#include <iostream>
#include <stdint.h>
#include <string>
#include <vector>
namespace dbiplus
{
enum fType
{
ft_String,
ft_Boolean,
ft_Char,
ft_WChar,
ft_WideString,
ft_Short,
ft_UShort,
ft_Int,
ft_UInt,
ft_Float,
ft_Double,
ft_LongDouble,
ft_Int64,
ft_Object
};
#ifdef TARGET_WINDOWS_STORE
#pragma pack(push)
#pragma pack(8)
#endif
class field_value
{
private:
fType field_type;
std::string str_value;
union
{
bool bool_value;
char char_value;
short short_value;
unsigned short ushort_value;
int int_value;
unsigned int uint_value;
float float_value;
double double_value;
int64_t int64_value;
void* object_value;
};
bool is_null;
public:
field_value();
explicit field_value(const char* s);
explicit field_value(const bool b);
explicit field_value(const char c);
explicit field_value(const short s);
explicit field_value(const unsigned short us);
explicit field_value(const int l);
explicit field_value(const unsigned int ul);
explicit field_value(const float f);
explicit field_value(const double d);
explicit field_value(const int64_t i);
field_value(const field_value& fv);
~field_value();
fType get_fType() const { return field_type; }
bool get_isNull() const { return is_null; }
std::string get_asString() const;
bool get_asBool() const;
char get_asChar() const;
short get_asShort() const;
unsigned short get_asUShort() const;
int get_asInt() const;
unsigned int get_asUInt() const;
float get_asFloat() const;
double get_asDouble() const;
int64_t get_asInt64() const;
field_value& operator=(const char* s)
{
set_asString(s);
return *this;
}
field_value& operator=(const std::string& s)
{
set_asString(s);
return *this;
}
field_value& operator=(const bool b)
{
set_asBool(b);
return *this;
}
field_value& operator=(const short s)
{
set_asShort(s);
return *this;
}
field_value& operator=(const unsigned short us)
{
set_asUShort(us);
return *this;
}
field_value& operator=(const int l)
{
set_asInt(l);
return *this;
}
field_value& operator=(const unsigned int l)
{
set_asUInt(l);
return *this;
}
field_value& operator=(const float f)
{
set_asFloat(f);
return *this;
}
field_value& operator=(const double d)
{
set_asDouble(d);
return *this;
}
field_value& operator=(const int64_t i)
{
set_asInt64(i);
return *this;
}
field_value& operator=(const field_value& fv);
//class ostream;
friend std::ostream& operator<<(std::ostream& os, const field_value& fv)
{
switch (fv.get_fType())
{
case ft_String:
{
return os << fv.get_asString();
break;
}
case ft_Boolean:
{
return os << fv.get_asBool();
break;
}
case ft_Char:
{
return os << fv.get_asChar();
break;
}
case ft_Short:
{
return os << fv.get_asShort();
break;
}
case ft_UShort:
{
return os << fv.get_asUShort();
break;
}
case ft_Int:
{
return os << fv.get_asInt();
break;
}
case ft_UInt:
{
return os << fv.get_asUInt();
break;
}
case ft_Float:
{
return os << fv.get_asFloat();
break;
}
case ft_Double:
{
return os << fv.get_asDouble();
break;
}
case ft_Int64:
{
return os << fv.get_asInt64();
break;
}
default:
{
return os;
break;
}
}
}
void set_isNull() { is_null = true; }
void set_asString(const char* s);
void set_asString(const std::string& s);
void set_asBool(const bool b);
void set_asChar(const char c);
void set_asShort(const short s);
void set_asUShort(const unsigned short us);
void set_asInt(const int l);
void set_asUInt(const unsigned int l);
void set_asFloat(const float f);
void set_asDouble(const double d);
void set_asInt64(const int64_t i);
fType get_field_type();
std::string gft();
};
struct field_prop
{
std::string name;
};
struct field
{
field_prop props;
field_value val;
};
typedef std::vector<field> Fields;
typedef std::vector<field_value> sql_record;
typedef std::vector<field_prop> record_prop;
typedef std::vector<sql_record*> query_data;
typedef field_value variant;
class result_set
{
public:
result_set() = default;
~result_set() { clear(); };
void clear()
{
for (unsigned int i = 0; i < records.size(); i++)
if (records[i])
delete records[i];
records.clear();
record_header.clear();
};
record_prop record_header;
query_data records;
};
#ifdef TARGET_WINDOWS_STORE
#pragma pack(pop)
#endif
} // namespace dbiplus
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