Get whether the operation is completed

Source: R/DSResult.R

Get whether the result from a previous assignment or aggregation operation was completed, either with a successful status or a failed one. This call must not wait for the completion, immediate response is expected. Once the result is identified as being completed, the raw result the operation can be get directly.

dsIsCompleted(res)

Arguments

res

An object inheriting from DSResult-class.

Value

A logical

See also

Other DSResult generics: DSResult-class, dsFetch(), dsGetInfo()

Examples

if (FALSE) {
con <- dsConnect(DSOpal::Opal(), "server1",
  username = "dsuser", password = "password", url = "https://opal-demo.obiba.org")
dsAssignExpr(con, "C", as.symbol("c(1, 2, 3)"))
res <- dsAggregate(con, as.symbol("length(C)"), async = TRUE)
completed <- dsIsCompleted(res)
while (!completed) {
  Sys.sleep(1)
  completed <- dsIsCompleted(res)
}
length <- dsFetch(res)
dsDisconnect(con)
}