Description Usage Arguments See Also Examples
Pipe a mongo.gridfile to an R connection. This outputs the entire GridFS file to a connection. If the connection is open, it must be in binary output mode; otherwise, the connection is opened in binary output mode and closed afterwards.
1 | mongo.gridfile.pipe(gridfile, con)
|
gridfile |
A (mongo.gridfile) object. |
con |
(connection) An R connection object. |
mongo.gridfs
,
mongo.gridfs.find
,
mongo.gridfile,
mongo.gridfile.get.descriptor
,
mongo.gridfile.get.filename
,
mongo.gridfile.get.length
,
mongo.gridfile.get.chunk.size
,
mongo.gridfile.get.chunk.count
,
mongo.gridfile.get.content.type
,
mongo.gridfile.get.upload.date
,
mongo.gridfile.get.md5
,
mongo.gridfile.get.metadata
,
mongo.gridfile.get.chunk
,
mongo.gridfile.get.chunks
,
mongo.gridfile.read
,
mongo.gridfile.seek
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | mongo <- mongo.create()
if (mongo.is.connected(mongo)) {
gridfs <- mongo.gridfs.create(mongo, "grid")
mongo.gridfs.store.file(gridfs, "tests/test.R", "test.R")
gf <- mongo.gridfs.find(gridfs, "test.R")
if (!is.null(gf)) {
f <- file("mongodb_copy.pdf")
mongo.gridfile.pipe(gf, f)
mongo.gridfile.destroy(gf)
}
mongo.gridfs.destroy(gridfs)
}
|
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