Example of a "Component" or "Resource" controlling Cassandra access

MyClusterManager.java

public class MyClusterManager {	
	
	private Session session;
	private Cluster cluster;

	@javax.annotation.PostConstruct
	public void init() throws IOException
	{
		cluster = createCluster(); // private method that builds a cluster
		session = createSession(); // private method that builds a session
	}
	
	@javax.annotation.PreDestroy
	public void shutdown() throws IOException
	{
	  session.close();
	  cluster.close();
	}
	
	// Expose block-and-tackle operations thusly:
	
	@Override
	public ResultSet execute(final Statement boundStatement)
	{
		return session.execute(boundStatement);
	}

	@Override
	public ResultSetFuture executeAsync(final Statement boundStatement)
	{
		return session.executeAsync(boundStatement);
	}

	@Override
	public PreparedStatement prepare(final String statement)
	{
		return session.prepare(statement);
	}

	@Override
	public ResultSet execute(final String statement)
	{
		return session.execute(statement);
	}

	@Override
	public Metadata getMetadata()
	{
		return cluster.getMetadata();
	}
	//...
}