class_db_con: A database connection
In petermeissner/db6: A convenience R6 class framework around DBI

Provides wrapper object around DBIConnection objects.

1	class_db_con

R6Class object.

persistant connection information: By capturing the connection creation function as well as all parameter needed to create connection in the first place, db_con objects are able to re-use these information.
self aware: Db_con objects can check the validity of their connection.
auto reconnect: Validity checking is used to decide whether or not the persistant conenction information should be used to reconnect because - e.g. connection timed out or was closed in the meantime.

con: Gives access to the actual DBIConnection object that is wrapped in db_con object. The active bindings (1) gives easy access to the connection as field adn (2) the active binding allows for validity checking and reconnecting in case of invalid connections leading to always fresh connections.

connect(drv_fun, ...): will connect to database if not already connected – see db_connect
finalize(): will close connection
initialize(): will open connection and store all information necessary to create new connection
info(): will provide some basic information about connection
disconnect(): will close connection