DBIObject-class {DBI} | R Documentation |
Base class for all other DBI classes (e.g., drivers, connections). This is a virtual Class: No objects may be created from it.
More generally, the DBI defines a very small set of classes and methods that
allows users and applications access DBMS with a common interface. The
virtual classes are DBIDriver
that individual drivers extend,
DBIConnection
that represent instances of DBMS connections, and
DBIResult
that represent the result of a DBMS statement. These three
classes extend the basic class of DBIObject
, which serves as the root
or parent of the class hierarchy.
An implementation MUST provide methods for the following generics:
It MAY also provide methods for:
summary
. Print a concise description of the
object. The default method invokes dbGetInfo(dbObj)
and prints
the name-value pairs one per line. Individual implementations may
tailor this appropriately.
Other DBI classes: DBIConnection-class
,
DBIDriver-class
,
DBIResult-class
## Not run: drv <- dbDriver("MySQL") con <- dbConnect(drv, group = "rs-dbi") res <- dbSendQuery(con, "select * from vitalSuite") is(drv, "DBIObject") ## True is(con, "DBIObject") ## True is(res, "DBIObject") ## End(Not run)