io.debezium.connector.mysql

Class MySqlSystemVariables

java.lang.Object

io.debezium.connector.mysql.MySqlSystemVariables

public class MySqlSystemVariables
extends Object

Encapsulates a set of the MySQL system variables.

Author:

Randall Hauch

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MySqlSystemVariables.Scope

Field Summary

Fields

Modifier and Type	Field and Description
static String	CHARSET_NAME_SERVER The system variable name for the name of the character set that the server uses by default.
private ConcurrentMap<String,String>	global
static String	LOWER_CASE_TABLE_NAMES The system variable name to see if the MySQL tables are stored and looked-up in case sensitive way.
private ConcurrentMap<String,String>	session

Constructor Summary

Constructors

Constructor and Description
MySqlSystemVariables() Create an instance.

Method Summary

Modifier and Type	Method and Description
private ConcurrentMap<String,String>	forScope(MySqlSystemVariables.Scope scope)
String	getVariable(String name) Get the variable with the specified name, first checking the session (or local) variables and then the global variables.
String	getVariable(String name, MySqlSystemVariables.Scope scope) Get the variable with the specified name and scope.
MySqlSystemVariables	setVariable(MySqlSystemVariables.Scope scope, String name, String value) Set the variable with the specified scope.
private String	variableName(String name)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CHARSET_NAME_SERVER

public static final String CHARSET_NAME_SERVER

The system variable name for the name of the character set that the server uses by default. See http://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_character-set-server

See Also:

Constant Field Values

LOWER_CASE_TABLE_NAMES

public static final String LOWER_CASE_TABLE_NAMES

The system variable name to see if the MySQL tables are stored and looked-up in case sensitive way. See https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_lower_case_table_names

See Also:

Constant Field Values

global

private final ConcurrentMap<String,String> global

session

private final ConcurrentMap<String,String> session

Constructor Detail

MySqlSystemVariables

public MySqlSystemVariables()

Create an instance.

Method Detail

setVariable

public MySqlSystemVariables setVariable(MySqlSystemVariables.Scope scope,
                                        String name,
                                        String value)

Set the variable with the specified scope.

Parameters:

scope - the variable scope; may be null if the session scope is to be used

name - the name of the variable; may not be null

value - the variable value; may be null if the value for the named variable is to be removed

Returns:

this object for method chaining purposes; never null

getVariable

public String getVariable(String name,
                          MySqlSystemVariables.Scope scope)

Get the variable with the specified name and scope.

Parameters:

name - the name of the variable; may not be null

scope - the variable scope; may not be null

Returns:

the variable value; may be null if the variable is not currently set

getVariable

public String getVariable(String name)

Get the variable with the specified name, first checking the session (or local) variables and then the global variables.

Parameters:

name - the name of the variable; may not be null

Returns:

the variable value; may be null if the variable is not currently set

variableName

private String variableName(String name)

forScope

private ConcurrentMap<String,String> forScope(MySqlSystemVariables.Scope scope)