This packages provides a direct interface (without the use of Java) to the most basic functionality of Apache Cassanda ditributed NoSQL database such as login, updates and queries. The focus is on effciency and speed.
RC.connect is used to connect to a Cassandra
instance. The obtained handle is then used for all operations until
RC.close is used to close the connection.
A set of
RC.get functions can be used to query the
database. Specialized high-level interface for fixed-column tables
(not the most common in Cassandra, thgouh) is also available with
Updates and inserts can be performed either individually using the
RC.insert function or batch-mutations using
Auxiliary functions retrieving meta-information from the database
are described on the
RC.version help page.
Currently, communication to Cassanra is performed directly on a blocking TCP/IP socket. This implies that transactions currently cannot be interrupted on the R side and there is no timeout. This may change in future versions. The code does not use R connections to avoid extra overhead.
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RC.cluster.name Functions retrieving meta-information from a Cassandra connection RC.connect Connect, login, close connection to Cassandra RC.get Functions for querying Cassandra database RC.insert Update function to insert data into Cassandra RC.read.table Read and write tables into column families in Cassandra
Simon Urbanek <[email protected]>
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