mongo.gridfile.writer.create: Create a mongo.gridfile.writer object
In jonkatz2/rmongodb: R-MongoDB driver

Description Usage Arguments Value See Also Examples

Create a mongo.gridfile.writer object used to buffer many writes to a single GridFS file. Once the mongo.gridfile.writer is created, use mongo.gridfile.writer.write() to write data to the buffered GridFS file and mongo.gridfile.writer.finish() when done.

1	mongo.gridfile.writer.create(gridfs, remotename, contenttype = "")

`gridfs`	A (mongo.gridfs) object.
`remotename`	(string) The name the file will be known as within the GridFS.
`contenttype`	(string) Optional MIME content type.

(mongo.gridfile.writer) The object to be used for writing to the GridFS file.

mongo.gridfs,
mongo.gridfs.create,
mongo.gridfile.writer.write,
mongo.gridfile.writer.finish.

mongo <- mongo.create()
if (mongo.is.connected(mongo)) {
    gridfs <- mongo.gridfs.create(mongo, "grid")

    gfw <- mongo.gridfile.writer.create(gridfs, "test.dat")

    # store 4 bytes
    mongo.gridfile.writer.write(gfw, charToRaw("test"))

    # store string & LF plus 0-byte terminator
    buf <- writeBin("Test\n", as.raw(1))
    mongo.gridfile.writer.write(gfw, buf)

    # store PI as a float
    buf <- writeBin(3.1415926, as.raw(1), size=4, endian="little")
    mongo.gridfile.writer.write(gfw, buf)

    mongo.gridfile.writer.finish(gfw)
    mongo.gridfs.destroy(gridfs)
}