Description Usage Arguments Value See Also Examples
Finish writing to a buffered GridFS file. This function flushes any partial buffer and finalizes the operation.
1 |
gfw |
A (mongo.gridfile.writer) object. |
TRUE, if successfil; false, if an error occurred.
mongo.gridfs,
mongo.gridfile.writer.create
,
mongo.gridfile.writer,
mongo.gridfile.writer.write
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | 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)
}
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