sdi_utils.cc File Reference

#include "sql/sdi_utils.h"
#include <string.h>
#include "my_compiler.h"
#include "my_sys.h"
#include "mysqld_error.h"

Functions
bool	create_serialized_meta_data (const char *schema_name, const char *table_name, uchar **meta_data, size_t *meta_data_length)
	This function retrieves serialized meta data from the data dictionary for the given schema and table. More...
bool	import_serialized_meta_data (const uchar *meta_data, size_t meta_data_length, bool readonly)
	This function takes the submitted serialized meta data, de-serializes and analyzes it, and merges it into the data dictionary. More...
bool	different_serialized_meta_data (const uchar *a_meta_data, size_t a_meta_data_length, const uchar *b_meta_data, size_t b_meta_data_length)
	This function takes the two submitted serialized meta data blobs, and compares them. More...

Function Documentation

create_serialized_meta_data()

bool create_serialized_meta_data	(	const char *	schema_name,
		const char *	table_name,
		uchar **	meta_data,
		size_t *	meta_data_length
	)

This function retrieves serialized meta data from the data dictionary for the given schema and table.

The serialized meta data may be used for various purposes, such as writing it to a file, shipping it to other processes, etc.

Parameters

[in]	schema_name	Name of the schema
[in]	table_name	Name of the table
[out]	meta_data	The serialized meta data of the table
[out]	meta_data_length	The size of the meta data blob

Return values

false	Success
true	Error, e.g. the table was not found in the data dictionary. In this case, the values of 'meta_data_length' and 'meta_data' are not defined.

different_serialized_meta_data()

bool different_serialized_meta_data	(	const uchar *	a_meta_data,
		size_t	a_meta_data_length,
		const uchar *	b_meta_data,
		size_t	b_meta_data_length
	)

This function takes the two submitted serialized meta data blobs, and compares them.

Parameters

[in]	a_meta_data	First serialized meta data blob
[in]	a_meta_data_length	Size of the first meta data blob
[in]	b_meta_data	Second serialized meta data blob
[in]	b_meta_data_length	Size of the second meta data blob

Return values

false	The two blobs are identical
true	The two blobs are different

import_serialized_meta_data()

bool import_serialized_meta_data	(	const uchar *	meta_data,
		size_t	meta_data_length,
		bool	readonly
	)

This function takes the submitted serialized meta data, de-serializes and analyzes it, and merges it into the data dictionary.

Parameters

[in]	meta_data	The serialized meta data
[in]	meta_data_length	The size of the meta data blob
[in]	readonly	Disallow conflict resolution affecting the imported meta data

Return values

false	Success
true	Error, e.g. a conflict was detected while 'readonly' is set to 'true'.