DSObject-class {DSI}

DSObject class

Description

Base class for all other DataSHIELD classes (e.g., drivers, connections). This is a virtual Class: No objects may be created from it.

Details

More generally, DataSHIELD defines a very small set of classes and generics that allows users and applications perform meta-analysis with a common interface. The virtual classes are 'DSDriver' that individual drivers extend, 'DSConnection' that represent instances of DataSHIELD-aware data repository connections, and 'DSResult' that represent the result of a DataSHIELD operation. These three classes extend the basic class of 'DSObject', which serves as the root or parent of the class hierarchy.

Implementation notes

An implementation MUST provide methods for the following generics:

• dsGetInfo

It MAY also provide methods for:

• summary Print a concise description of the object. The default method invokes 'dsGetInfo(dsObj)' and prints the name-value pairs one per line. Individual implementations may tailor this appropriately.

See Also

Other DS classes: DSConnection-class, DSDriver-class, DSResult-class

Examples

## Not run: 
drv <- DSOpal::Opal()
con <- dsConnect(drv, 
  username = "dsuser", password = "password", url = "https://opal-demo.obiba.org")

rs <- dsAssign(con, "Project.TableA")
is(drv, "DSObject")  ## True
is(con, "DSObject")  ## True
is(rs, "DSObject")   ## True

dsDisconnect(con)

## End(Not run)