RCassandra (version 0.1-3)

RC.connect: Connect, login, close connection to Cassandra

Description

RC.connect connects a to a host running Cassandra. All subsequent operations are performed on the handle returned by this function.

RC.close closes a Cassandra connection.

RC.login perform an authentication request.

Usage

RC.connect(host = NULL, port = 9160L)
RC.close(conn)
RC.login(conn, username = "default", password = "")

Arguments

host

host name or IP address to connect to using TCP/IP

port

port to connect to on the above host

conn

connection handle as returned by RC.connect

username

username for the authentication dictionary

password

password for the authentication dictionary

Value

RC.connect returns a Cassandra connection handle.RC.close return NULLRC.login returns conn.

Details

RC.connect return an opaque connection handle that has to be used for all subsequent calls on the same connection. RCassandra uses low-level system calls to communicate with Cassandra, this handle is not an R connection.

RC.close closes an existing Cassandra connection.

RC.login sends an authenticataion request with the given credentials. How this is processed depend on the authentication module use in the Cassandra instance this connection connects to.

Examples

## Not run: 
# c <- RC.connect("cassandra-host")
# RC.login(c, "foo", "bar")
# RC.cluster.name(c)
# RC.describe.keyspaces(c)
# RC.close(c)
# ## End(Not run)