mongo.get.server.err.string: Retrieve an server error code from a mongo connection object
In jonkatz2/rmongodb: R-MongoDB driver

Description Usage Arguments Details Value See Also Examples

Retrieve an server error string from a mongo connection object.

1	mongo.get.server.err.string(mongo)

mongo

(mongo) a mongo connection object.

mongo.find(), mongo.find.one(), mongo.index.create() set or clear this error string depending on whether they are successful or not.

mongo.get.last.err() and mongo.get.prev.err() both set or clear this error string according to what the server reports.

(string) Server error string

mongo.get.server.err,
mongo.get.last.err,
mongo.get.prev.err,
mongo.find,
mongo.find.one,
mongo.index.create,
mongo.

mongo <- mongo.create()
if (mongo.is.connected(mongo)) {
    # construct a query containing invalid operator
    buf <- mongo.bson.buffer.create()
    mongo.bson.buffer.start.object(buf, "age")
    mongo.bson.buffer.append(buf, "$bad", 1L)
    mongo.bson.buffer.finish.object(buf)
    query <- mongo.bson.from.buffer(buf)

    result <- mongo.find.one(mongo, "test.people", query)
    if (is.null(result)) {
        print(mongo.get.server.err(mongo))
        print(mongo.get.server.err.string(mongo))
    }
}