Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/10145#discussion_r46726302
--- Diff: R/pkg/R/SQLContext.R ---
@@ -214,18 +214,45 @@ setMethod("toDF", signature(x = "RDD"),
#' sc <- sparkR.init()
#' sqlContext <- sparkRSQL.init(sc)
#' path <- "path/to/file.json"
-#' df <- jsonFile(sqlContext, path)
+#' df <- read.json(sqlContext, path)
#' }
-jsonFile <- function(sqlContext, path) {
+read.json <- function(sqlContext, ...) {
# Allow the user to have a more flexible definiton of the text file path
- path <- suppressWarnings(normalizePath(path))
+ paths <- if (length(list(...)) > 1) {
+ lapply(list(...), function(x) suppressWarnings(normalizePath(x)))
+ } else {
+ as.list(suppressWarnings(normalizePath(splitString(...))))
+ }
# Convert a string vector of paths to a string containing comma
separated paths
- path <- paste(path, collapse = ",")
- sdf <- callJMethod(sqlContext, "jsonFile", path)
+ read <- callJMethod(sqlContext, "read")
+ sdf <- callJMethod(read, "json", paths)
dataFrame(sdf)
}
+#' Create a DataFrame from a JSON file.
--- End diff --
yes, see createDataFrame and as.DataFrame.
They should have the same `@rdname` but distinct `@name`
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