Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/17178#discussion_r105049248
--- Diff: R/pkg/inst/tests/testthat/test_sparkSQL.R ---
@@ -1342,28 +1342,52 @@ test_that("column functions", {
df <- read.json(mapTypeJsonPath)
j <- collect(select(df, alias(to_json(df$info), "json")))
expect_equal(j[order(j$json), ][1], "{\"age\":16,\"height\":176.5}")
- df <- as.DataFrame(j)
- schema <- structType(structField("age", "integer"),
- structField("height", "double"))
- s <- collect(select(df, alias(from_json(df$json, schema), "structcol")))
- expect_equal(ncol(s), 1)
- expect_equal(nrow(s), 3)
- expect_is(s[[1]][[1]], "struct")
- expect_true(any(apply(s, 1, function(x) { x[[1]]$age == 16 } )))
-
- # passing option
- df <- as.DataFrame(list(list("col" = "{\"date\":\"21/10/2014\"}")))
- schema2 <- structType(structField("date", "date"))
- expect_error(tryCatch(collect(select(df, from_json(df$col, schema2))),
- error = function(e) { stop(e) }),
- paste0(".*(java.lang.NumberFormatException: For input
string:).*"))
- s <- collect(select(df, from_json(df$col, schema2, dateFormat =
"dd/MM/yyyy")))
- expect_is(s[[1]][[1]]$date, "Date")
- expect_equal(as.character(s[[1]][[1]]$date), "2014-10-21")
-
- # check for unparseable
- df <- as.DataFrame(list(list("a" = "")))
- expect_equal(collect(select(df, from_json(df$a, schema)))[[1]][[1]], NA)
+
+ schemas <- list(structType(structField("age", "integer"),
structField("height", "double")),
+ "struct<age:integer,height:double>")
--- End diff --
Doh, I meant there is a public `from_json` that takes JSON string schema -
https://github.com/apache/spark/blob/369a148e591bb16ec7da54867610b207602cd698/sql/core/src/main/scala/org/apache/spark/sql/functions.scala#L3061-L3062
Yup, let me give a shot to provide an option for it first to show if it
looks okay to you.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
