SqlParameter Class Reference

A class which contains a SQL statement parameter. SqlParameter can be useful for keeping SQL queries sanitized and avoid SQL injection. With C++17, it may be desirable to replace this class with std::variant. More...

#include <SqlStatement.hh>

Public Types
enum	ParamType : int { NULL_TYPE, INTEGER, REAL, TEXT }
	An enum to indicate which type of parameter this is. More...

Public Member Functions
	SqlParameter ()
	SqlParameter (std::nullptr_t)
	Construct NULL parameter. More...
	SqlParameter (int64_t _integer)
	Construct integer parameter. More...
	SqlParameter (double _real)
	Construct real parameter. More...
	SqlParameter (const std::string &_text)
	Construct string parameter. More...
	SqlParameter (const SqlParameter &_other)
	Copy constructor. More...
	SqlParameter (SqlParameter &&_other)
	Move constructor. More...
	~SqlParameter ()
	Destructor. More...
SqlParameter &	operator= (const SqlParameter &_other)
	Copy assignment operator. More...
SqlParameter &	operator= (SqlParameter &&_other)
	Move assignment operator. More...
const int64_t *	QueryInteger () const
	Get the integer value of this parameter. More...
const double *	QueryReal () const
	Get the floating-point value of this parameter. More...
const std::string *	QueryText () const
	Get the text value of this paramter. More...
void	Set (std::nullptr_t _np)
	Set this parameter to a NULL_TYPE. More...
void	Set (int64_t _integer)
	Set this parameter to an INTEGER type. More...
void	Set (double _real)
	Set this parameter to a floating-point type. More...
void	Set (const std::string &_text)
	Set this parameter to a text string. More...
ParamType	Type () const
	Get the type for this parameter. More...

Detailed Description

A class which contains a SQL statement parameter. SqlParameter can be useful for keeping SQL queries sanitized and avoid SQL injection. With C++17, it may be desirable to replace this class with std::variant.

These parameter types map directly to the datatypes of SQLite3: https://www.sqlite.org/datatype3.html

Member Enumeration Documentation

ParamType

enum ParamType : int

strong

An enum to indicate which type of parameter this is.

Enumerator
NULL_TYPE
INTEGER
REAL
TEXT

Constructor & Destructor Documentation

SqlParameter() [1/7]

SqlParameter

(

)

See also

Set(std::nullptr_t)

SqlParameter(std::nullptr_t)

SqlParameter() [2/7]

SqlParameter ( std::nullptr_t  )

explicit

Construct NULL parameter.

See also

Set(std::nullptr_t)

SqlParameter() [3/7]

SqlParameter ( int64_t  _integer )

explicit

Construct integer parameter.

See also

Set(int64_t)

Parameters

[in]

_integer

an integer

SqlParameter() [4/7]

SqlParameter ( double  _real )

explicit

Construct real parameter.

See also

Set(double)

Parameters

[in]

_real

a real number

SqlParameter() [5/7]

SqlParameter ( const std::string &  _text )

explicit

Construct string parameter.

See also

Set(const std::string &)

Parameters

[in]

_string

a string

SqlParameter() [6/7]

SqlParameter

(

const SqlParameter &

_other

)

Copy constructor.

Parameters

[in]

_other

Another SqlParameter

SqlParameter() [7/7]

SqlParameter

(

SqlParameter &&

_other

)

Move constructor.

Parameters

[in]

_other

Another SqlParameter

~SqlParameter()

~SqlParameter

(

)

Destructor.

Member Function Documentation

operator=() [1/2]

SqlParameter& operator=

(

const SqlParameter &

_other

)

Copy assignment operator.

Parameters

[in]

_other

Another SqlParameter

Returns

This object

operator=() [2/2]

SqlParameter& operator=

(

SqlParameter &&

_other

)

Move assignment operator.

Parameters

[in]

_other

Another SqlParameter

Returns

This object

QueryInteger()

const int64_t* QueryInteger

(

)

const

Get the integer value of this parameter.

Returns

A pointer to this parameter's integer value, or a nullptr if it does not contain an integer.

QueryReal()

const double* QueryReal

(

)

const

Get the floating-point value of this parameter.

Returns

A pointer to this parameter's floating-point value, or a nullptr if it does not contain a REAL value.

QueryText()

const std::string* QueryText

(

)

const

Get the text value of this paramter.

Returns

A pointer to this parameter's text string, or a nullptr if it does not contain a text string.

Set() [1/4]

void Set

(

std::nullptr_t

_np

)

Set this parameter to a NULL_TYPE.

Parameters

[in]

_np

Pass in a nullptr.

Set() [2/4]

void Set

(

int64_t

_integer

)

Set this parameter to an INTEGER type.

Parameters

[in]

_integer

The integer value to set this parameter to.

Set() [3/4]

void Set

(

double

_real

)

Set this parameter to a floating-point type.

Parameters

[in]

_real

The value to set this parameter to.

Set() [4/4]

void Set

(

const std::string &

_text

)

Set this parameter to a text string.

Parameters

[in]

_text

The value to set this parameter to.

Type()

ParamType Type

(

)

const

Get the type for this parameter.

Returns

The type for this parameter

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The documentation for this class was generated from the following file:

• SqlStatement.hh