class
ActiveRecord::ConnectionAdapters::Mysql2Adapter
<
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter
Active Record MySQL2 Adapter
Methods
- A
- D
- E
- N
- Q
- S
Included Modules
Constants
ADAPTER_NAME |
= | "Mysql2" |
ER_ACCESS_DENIED_ERROR |
= | 1045 |
ER_BAD_DB_ERROR |
= | 1049 |
ER_CONN_HOST_ERROR |
= | 2003 |
ER_DBACCESS_DENIED_ERROR |
= | 1044 |
ER_UNKNOWN_HOST_ERROR |
= | 2005 |
TYPE_MAP |
= | Type::TypeMap.new.tap { |m| initialize_type_map(m) } |
Public class methods
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 66
def initialize(...)
super
@config[:flags] ||= 0
if @config[:flags].kind_of? Array
@config[:flags].push "FOUND_ROWS"
else
@config[:flags] |= ::Mysql2::Client::FOUND_ROWS
end
@connection_parameters ||= @config
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 35
def new_client(config)
::Mysql2::Client.new(config)
rescue ::Mysql2::Error => error
case error.error_number
when ER_BAD_DB_ERROR
raise ActiveRecord::NoDatabaseError.db_error(config[:database])
when ER_DBACCESS_DENIED_ERROR, ER_ACCESS_DENIED_ERROR
raise ActiveRecord::DatabaseConnectionError.username_error(config[:username])
when ER_CONN_HOST_ERROR, ER_UNKNOWN_HOST_ERROR
raise ActiveRecord::DatabaseConnectionError.hostname_error(config[:host])
else
raise ActiveRecord::ConnectionNotEstablished, error.message
end
end
Public instance methods
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 133
def active?
!!@raw_connection&.ping
end
Disconnects from the database if already connected. Otherwise, this method does nothing.
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 141
def disconnect!
super
@raw_connection&.close
@raw_connection = nil
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 114
def error_number(exception)
exception.error_number if exception.respond_to?(:error_number)
end
Quotes strings for use in SQL input.
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 123
def quote_string(string)
with_raw_connection(allow_retry: true, materialize_transactions: false) do |connection|
connection.escape(string)
end
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 96
def savepoint_errors_invalidate_transactions?
true
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 84
def supports_comments?
true
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 88
def supports_comments_in_create?
true
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 80
def supports_json?
!mariadb? && database_version >= "5.7.8"
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 100
def supports_lazy_transactions?
true
end
Source code GitHub
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 92
def supports_savepoints?
true
end
Definition files