Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/9218#discussion_r43694097
--- Diff: R/pkg/R/DataFrame.R ---
@@ -276,6 +276,75 @@ setMethod("names<-",
}
})
+#' @rdname columns
+#' @name colnames
+setMethod("colnames",
+ signature(x = "DataFrame"),
+ function(x) {
+ columns(x)
+ })
+
+#' @rdname columns
+#' @name colnames<-
+setMethod("colnames<-",
+ signature(x = "DataFrame", value = "character"),
+ function(x, value) {
+ sdf <- callJMethod(x@sdf, "toDF", as.list(value))
+ dataFrame(sdf)
+ })
+
+rToScalaTypes <- new.env()
+rToScalaTypes[["integer"]] <- "integer" # in R, integer is 32bit
+rToScalaTypes[["numeric"]] <- "double" # in R, numeric == double which
is 64bit
+rToScalaTypes[["double"]] <- "double"
+rToScalaTypes[["character"]] <- "string"
+rToScalaTypes[["logical"]] <- "boolean"
--- End diff --
yes, that's the plan.
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