DBI (version 1.2.2)

DBIConnector-class: DBIConnector class

Description

Wraps objects of the DBIDriver class to include connection options. The purpose of this class is to store both the driver and the connection options. A database connection can be established with a call to dbConnect(), passing only that object without additional arguments.

Details

To prevent leakage of passwords and other credentials, this class supports delayed evaluation. All arguments can optionally be a function (callable without arguments). In such a case, the function is evaluated transparently when connecting in dbGetConnectArgs().

See Also

Other DBI classes: DBIConnection-class, DBIDriver-class, DBIObject-class, DBIResult-class, DBIResultArrow-class

Other DBIConnector generics: dbConnect(), dbDataType(), dbGetConnectArgs(), dbIsReadOnly()

Examples

if (FALSE) { # requireNamespace("RSQLite", quietly = TRUE)
# Create a connector:
cnr <- new("DBIConnector",
  .drv = RSQLite::SQLite(),
  .conn_args = list(dbname = ":memory:")
)
cnr

# Establish a connection through this connector:
con <- dbConnect(cnr)
con

# Access the database through this connection:
dbGetQuery(con, "SELECT 1 AS a")
dbDisconnect(con)
}