# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 64 def self.database_exists?(config) !!ActiveRecord::Base.mysql2_connection(config) rescue ActiveRecord::NoDatabaseError false end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 58 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
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::new
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 43 def new_client(config) Mysql2::Client.new(config) rescue Mysql2::Error => error if error.error_number == ConnectionAdapters::Mysql2Adapter::ER_BAD_DB_ERROR raise ActiveRecord::NoDatabaseError.db_error(config[:database]) elsif error.error_number == ConnectionAdapters::Mysql2Adapter::ER_ACCESS_DENIED_ERROR raise ActiveRecord::DatabaseConnectionError.username_error(config[:username]) elsif [ConnectionAdapters::Mysql2Adapter::ER_CONN_HOST_ERROR, ConnectionAdapters::Mysql2Adapter::ER_UNKNOWN_HOST_ERROR].include?(error.error_number) raise ActiveRecord::DatabaseConnectionError.hostname_error(config[:host]) else raise ActiveRecord::ConnectionNotEstablished, error.message end end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 118 def active? @connection.ping end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 131 def disconnect! super @connection.close end
Disconnects from the database if already connected. Otherwise, this method does nothing.
ActiveRecord::ConnectionAdapters::AbstractAdapter#disconnect!
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 100 def error_number(exception) exception.error_number if exception.respond_to?(:error_number) end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 108 def quote_string(string) @connection.escape(string) rescue Mysql2::Error => error raise translate_exception(error, message: error.message, sql: "<escape>", binds: []) end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 122 def reconnect! super disconnect! connect end
ActiveRecord::ConnectionAdapters::AbstractAdapter#reconnect!
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 74 def supports_comments? true end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 78 def supports_comments_in_create? true end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 70 def supports_json? !mariadb? && database_version >= "5.7.8" end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 86 def supports_lazy_transactions? true end
# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 82 def supports_savepoints? true end
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Licensed under the MIT License.