Binary_diff Class Reference

Class that represents a single change to a column value in partial update of a JSON column. More...

#include <table.h>

Public Member Functions
	Binary_diff (size_t offset, size_t length)
	Create a new Binary_diff object. More...
size_t	offset () const
size_t	length () const
const char *	new_data (const Field *field) const
	Get a pointer to the start of the replacement data. More...
const char *	old_data (const Field *field) const
	Get a pointer to the start of the old data to be replaced. More...

Private Attributes
size_t	m_offset
	The offset of the start of the change. More...
size_t	m_length
	The size of the portion that is to be replaced. More...

Detailed Description

Class that represents a single change to a column value in partial update of a JSON column.

Constructor & Destructor Documentation

Binary_diff()

Binary_diff::Binary_diff ( size_t  offset, size_t  length  )

inline

Create a new Binary_diff object.

Parameters

offset	the offset of the beginning of the change
length	the length of the section that is to be replaced

Member Function Documentation

length()

size_t Binary_diff::length ( ) const

inline

Returns

the length of the changed data

new_data()

const char * Binary_diff::new_data

(

const Field *

field

)

const

Get a pointer to the start of the replacement data.

Parameters

field

the column that is updated

Returns

a pointer to the start of the replacement data

offset()

size_t Binary_diff::offset ( ) const

inline

Returns

the offset of the changed data

old_data()

const char * Binary_diff::old_data

(

const Field *

field

)

const

Get a pointer to the start of the old data to be replaced.

Parameters

field

the column that is updated

Returns

a pointer to the start of old data to be replaced.

Member Data Documentation

m_length

size_t Binary_diff::m_length

private

The size of the portion that is to be replaced.

m_offset

size_t Binary_diff::m_offset

private

The offset of the start of the change.

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

• sql/table.h
• sql/table.cc