class ActiveRecord::ConnectionAdapters::Mysql2Adapter

Parent:: ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter
Included modules:: ActiveRecord::ConnectionAdapters::MySQL::DatabaseStatements

Constants

ADAPTER_NAME

Public Class Methods

database_exists?(config) Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 47
def self.database_exists?(config)
  !!ActiveRecord::Base.mysql2_connection(config)
rescue ActiveRecord::NoDatabaseError
  false
end

new(connection, logger, connection_options, config) Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 41
def initialize(connection, logger, connection_options, config)
  superclass_config = config.reverse_merge(prepared_statements: false)
  super(connection, logger, connection_options, superclass_config)
  configure_connection
end

Calls superclass method ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter.new

Public Instance Methods

active?() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 101
def active?
  @connection.ping
end

disconnect!() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 114
def disconnect!
  super
  @connection.close
end

Disconnects from the database if already connected. Otherwise, this method does nothing.

Calls superclass method ActiveRecord::ConnectionAdapters::AbstractAdapter#disconnect!

error_number(exception) Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 85
def error_number(exception)
  exception.error_number if exception.respond_to?(:error_number)
end

quote_string(string) Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 93
def quote_string(string)
  @connection.escape(string)
end

reconnect!() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 105
def reconnect!
  super
  disconnect!
  connect
end

Calls superclass method ActiveRecord::ConnectionAdapters::AbstractAdapter#reconnect!

Also aliased as: reset!

reset!()

Alias for: reconnect!

supports_comments?() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 57
def supports_comments?
  true
end

supports_comments_in_create?() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 61
def supports_comments_in_create?
  true
end

supports_json?() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 53
def supports_json?
  !mariadb? && database_version >= "5.7.8"
end

supports_lazy_transactions?() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 69
def supports_lazy_transactions?
  true
end

supports_savepoints?() Show source

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 65
def supports_savepoints?
  true
end