Pattern Class Reference

The in-memory representation of a pattern. More...

#include <rule.h>

Public Types
enum	Load_status { OK , PARSE_ERROR , NOT_SUPPORTED_STATEMENT , NO_DIGEST }

Public Member Functions
Load_status	load (MYSQL_THD thd, const Persisted_rule *diskrule)
	Loads the pattern. More...
std::string	parse_error_message ()
	If any errors were raised during parsing, the first one is available here. More...

Public Attributes
int	number_parameters
std::string	normalized_pattern
	The pattern in normalized form. More...
services::Digest	digest
	The digest obtained from the pattern. More...
std::vector< std::string >	literals

Private Attributes
std::string	m_parse_error_message

Detailed Description

The in-memory representation of a pattern.

Member Enumeration Documentation

Load_status

enum Pattern::Load_status

Enumerator
OK
PARSE_ERROR
NOT_SUPPORTED_STATEMENT
NO_DIGEST

Member Function Documentation

load()

Pattern::Load_status Pattern::load	(	MYSQL_THD	thd,
		const Persisted_rule *	diskrule
	)

Loads the pattern.

The pattern string is copied in deep-copy way. This is not done in the CTOR because of the memory allocation.

This function does the following:

• Parse the pattern string.
• Print a normalized version.
• Extract the position of the parameter markers.
• Compute the digest

Return values

false	Success.
true	Either parse error, the pattern is not a select statement or out of memory.

parse_error_message()

std::string Pattern::parse_error_message ( )

inline

If any errors were raised during parsing, the first one is available here.

Member Data Documentation

digest

services::Digest Pattern::digest

The digest obtained from the pattern.

literals

std::vector<std::string> Pattern::literals

m_parse_error_message

std::string Pattern::m_parse_error_message

private

normalized_pattern

std::string Pattern::normalized_pattern

The pattern in normalized form.

number_parameters

int Pattern::number_parameters

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

• plugin/rewriter/rule.h
• plugin/rewriter/rule.cc