bind_params.cc File Reference

#include <errmsg.h>
#include <my_byteorder.h>
#include <my_dbug.h>
#include <my_sys.h>
#include <my_time.h>
#include <cstdint>
#include "m_string.h"
#include "my_config.h"
#include "mysql.h"
#include "mysql/service_mysql_alloc.h"
#include "mysqld_error.h"
#include "sql_common.h"

Macros
#define	MAX_DATE_REP_LENGTH   5
#define	MAX_TIME_REP_LENGTH   13

Functions
static bool	my_realloc_str (NET *net, ulong length)
static void	store_param_type (unsigned char **pos, MYSQL_BIND *param)
static void	store_param_tinyint (NET *net, MYSQL_BIND *param)
static void	store_param_short (NET *net, MYSQL_BIND *param)
static void	store_param_int32 (NET *net, MYSQL_BIND *param)
static void	store_param_int64 (NET *net, MYSQL_BIND *param)
static void	store_param_float (NET *net, MYSQL_BIND *param)
static void	store_param_double (NET *net, MYSQL_BIND *param)
static void	store_param_time (NET *net, MYSQL_BIND *param)
static void	net_store_datetime (NET *net, MYSQL_TIME *tm)
static void	store_param_date (NET *net, MYSQL_BIND *param)
static void	store_param_datetime (NET *net, MYSQL_BIND *param)
static void	store_param_str (NET *net, MYSQL_BIND *param)
static void	store_param_null (NET *net, MYSQL_BIND *param, my_off_t null_pos_ofs)
	Mark the parameter as NULL. More...
static bool	store_param (NET *net, MYSQL_BIND *param, my_off_t null_pos_ofs)
	Store one parameter in network packet: data is read from client buffer and saved in network packet by means of one of store_param_xxxx functions. More...
bool	mysql_int_serialize_param_data (NET *net, unsigned int param_count, MYSQL_BIND *params, const char **names, unsigned long n_param_sets, uchar **ret_data, ulong *ret_length, uchar send_types_to_server, bool send_named_params, bool send_parameter_set_count, bool send_parameter_count_when_zero)
	Serialize the query parameters. More...
bool	fix_param_bind (MYSQL_BIND *param, uint idx)

Variables
constexpr int	MAX_DATETIME_REP_LENGTH
static bool	int_is_null_true = true
static bool	int_is_null_false = false

Macro Definition Documentation

MAX_DATE_REP_LENGTH

#define MAX_DATE_REP_LENGTH   5

MAX_TIME_REP_LENGTH

#define MAX_TIME_REP_LENGTH   13

Function Documentation

fix_param_bind()

bool fix_param_bind	(	MYSQL_BIND *	param,
		uint	idx
	)

my_realloc_str()

static bool my_realloc_str ( NET *  net, ulong  length  )

static

mysql_int_serialize_param_data()

bool mysql_int_serialize_param_data	(	NET *	net,
		unsigned int	param_count,
		MYSQL_BIND *	params,
		const char **	names,
		unsigned long	n_param_sets,
		uchar **	ret_data,
		ulong *	ret_length,
		uchar	send_types_to_server,
		bool	send_named_params,
		bool	send_parameter_set_count,
		bool	send_parameter_count_when_zero
	)

Serialize the query parameters.

Used by mysql_real_query, mysql_real_query_nonblocking and mysql_stmt_execute()

Must be called on connected sessions only.

Parameters

	net	the NET to use as a string buffer serializing the params. It's cleared at start.
	param_count	the number of parameters to send
	params	the filled in MYSQL_BIND structure to retrieve the values from
	names	the names of the parameters in the params argument
	n_param_sets	the number of sets of values to set
[out]	ret_data	the buffer to the serialized parameter representation
[out]	ret_length	the number of bytes stored into the buffer
	send_types_to_server	: whether to send the parameter types to the server or not
	send_named_params	: whether the names of the parameters should be sent
	send_parameter_set_count	: whether to send 1 as parameter count or not
	send_parameter_count_when_zero	ON to send the param count even when it's zero

Return values

true	execution failed. Error in NET
false	execution succeeded

net_store_datetime()

static void net_store_datetime ( NET *  net, MYSQL_TIME *  tm  )

static

store_param()

static bool store_param ( NET *  net, MYSQL_BIND *  param, my_off_t  null_pos_ofs  )

static

Store one parameter in network packet: data is read from client buffer and saved in network packet by means of one of store_param_xxxx functions.

Parameters

net	MySQL NET connection
param	MySQL bind param
null_pos_ofs	the offset from the start of the buffer to the first byte of the null mask

Return values

true	failure
false	success

store_param_date()

static void store_param_date ( NET *  net, MYSQL_BIND *  param  )

static

store_param_datetime()

static void store_param_datetime ( NET *  net, MYSQL_BIND *  param  )

static

store_param_double()

static void store_param_double ( NET *  net, MYSQL_BIND *  param  )

static

store_param_float()

static void store_param_float ( NET *  net, MYSQL_BIND *  param  )

static

store_param_int32()

static void store_param_int32 ( NET *  net, MYSQL_BIND *  param  )

static

store_param_int64()

static void store_param_int64 ( NET *  net, MYSQL_BIND *  param  )

static

store_param_null()

static void store_param_null ( NET *  net, MYSQL_BIND *  param, my_off_t  null_pos_ofs  )

static

Mark the parameter as NULL.

Parameters

net	MySQL NET connection
param	MySQL bind param
null_pos_ofs	the offset from the start of the buffer to the first byte of the null mask

A data package starts with a string of bits where we set a bit if a parameter is NULL. Unlike bit string in result set row, here we don't have reserved bits for OK/error packet.

store_param_short()

static void store_param_short ( NET *  net, MYSQL_BIND *  param  )

static

store_param_str()

static void store_param_str ( NET *  net, MYSQL_BIND *  param  )

static

store_param_time()

static void store_param_time ( NET *  net, MYSQL_BIND *  param  )

static

store_param_tinyint()

static void store_param_tinyint ( NET *  net, MYSQL_BIND *  param  )

static

store_param_type()

static void store_param_type ( unsigned char **  pos, MYSQL_BIND *  param  )

static

Variable Documentation

int_is_null_false

bool int_is_null_false = false

static

int_is_null_true

bool int_is_null_true = true

static

MAX_DATETIME_REP_LENGTH

constexpr int MAX_DATETIME_REP_LENGTH

constexpr

Initial value:

=
    1  + 2  + 1  + 1  + 1  +
    1  + 1  + 4  +
    2