anonymous_namespace{json_dom.cc}::Wrapper_sort_key Class Reference

Wrapper around a sort key buffer. More...

Public Member Functions
	Wrapper_sort_key (uchar *buf, size_t len)
size_t	remaining () const
	Get the remaining space in the buffer. More...
size_t	pos () const
	Get how much space we've used so far. More...
void	append (uchar ch)
	Append a character to the buffer. More...
void	pad_till (uchar pad_character, size_t pos)
	Pad the buffer with the specified character till given position. More...
void	copy_int (size_t target_length, const uchar *from, size_t from_length, bool is_unsigned)
	Copy an integer to the buffer and format it in a way that makes it possible to sort the integers with memcpy(). More...
void	append_str_and_len (const char *str, size_t len)
	Append a string to the buffer, and add the length of the string to the end of the buffer. More...

Private Attributes
uchar *	m_buffer
	the buffer into which to write More...
size_t	m_length
	the length of the buffer More...
size_t	m_pos
	the current position in the buffer More...

Detailed Description

Wrapper around a sort key buffer.

Constructor & Destructor Documentation

Wrapper_sort_key()

anonymous_namespace{json_dom.cc}::Wrapper_sort_key::Wrapper_sort_key ( uchar *  buf, size_t  len  )

inline

Member Function Documentation

append()

void anonymous_namespace{json_dom.cc}::Wrapper_sort_key::append ( uchar  ch )

inline

Append a character to the buffer.

append_str_and_len()

void anonymous_namespace{json_dom.cc}::Wrapper_sort_key::append_str_and_len ( const char *  str, size_t  len  )

inline

Append a string to the buffer, and add the length of the string to the end of the buffer.

The space between the end of the string and the beginning of the length field is padded with zeros.

copy_int()

void anonymous_namespace{json_dom.cc}::Wrapper_sort_key::copy_int ( size_t  target_length, const uchar *  from, size_t  from_length, bool  is_unsigned  )

inline

Copy an integer to the buffer and format it in a way that makes it possible to sort the integers with memcpy().

Parameters

target_length	the number of bytes to write to the buffer
from	the buffer to copy the integer from (in little-endian format)
from_length	the size of the from buffer
is_unsigned	true if the from buffer contains an unsigned integer, false otherwise

pad_till()

void anonymous_namespace{json_dom.cc}::Wrapper_sort_key::pad_till ( uchar  pad_character, size_t  pos  )

inline

Pad the buffer with the specified character till given position.

Note

This function is intended to be used to make numbers of equal length without occupying the whole buffer.

pos()

size_t anonymous_namespace{json_dom.cc}::Wrapper_sort_key::pos ( ) const

inline

Get how much space we've used so far.

remaining()

size_t anonymous_namespace{json_dom.cc}::Wrapper_sort_key::remaining ( ) const

inline

Get the remaining space in the buffer.

Member Data Documentation

m_buffer

uchar* anonymous_namespace{json_dom.cc}::Wrapper_sort_key::m_buffer

private

the buffer into which to write

m_length

size_t anonymous_namespace{json_dom.cc}::Wrapper_sort_key::m_length

private

the length of the buffer

m_pos

size_t anonymous_namespace{json_dom.cc}::Wrapper_sort_key::m_pos

private

the current position in the buffer

---

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

• sql-common/json_dom.cc