Read a JSON file — read_json_arrow • Arrow R Package

Using JsonTableReader

read_json_arrow(
  file,
  col_select = NULL,
  as_data_frame = TRUE,
  schema = NULL,
  ...
)

Arguments

file	A character file name or URI, `raw` vector, an Arrow input stream, or a `FileSystem` with path (`SubTreeFileSystem`). If a file name, a memory-mapped Arrow InputStream will be opened and closed when finished; compression will be detected from the file extension and handled automatically. If an input stream is provided, it will be left open.
col_select	A character vector of column names to keep, as in the "select" argument to `data.table::fread()`, or a tidy selection specification of columns, as used in `dplyr::select()`.
as_data_frame	Should the function return a `data.frame` (default) or an Arrow Table?
schema	Schema that describes the table.
...	Additional options passed to `JsonTableReader$create()`

Value

A data.frame, or a Table if as_data_frame = FALSE.

Examples

# \donttest{
  tf <- tempfile()
  on.exit(unlink(tf))
  writeLines('
    { "hello": 3.5, "world": false, "yo": "thing" }
    { "hello": 3.25, "world": null }
    { "hello": 0.0, "world": true, "yo": null }
  ', tf, useBytes=TRUE)
  df <- read_json_arrow(tf)
# }