Sample Application - Cassandra: The Definitive Guide - page 70

public static final String CAMBRIA_NAME = "Cambria Suites Hayden";
public static final String CLARION_NAME= "Clarion Scottsdale Peak";
public static final String W_NAME = "The W SF";
public static final String WALDORF_NAME = "The Waldorf=Astoria";
public static final String UTF8 = "UTF8";
public static final String KEYSPACE = "Hotelier";
public static final ConsistencyLevel CL = ConsistencyLevel.ONE;
public static final String HOST = "localhost";
public static final int PORT = 9160;
}
Holding these commonly used strings make the code clearer and more concise, and you can eas-
ily change these values to reflect what makes sense in your environment.
Getting a Connection
For convenience, and to save repeating a bunch of boilerplate code, let's put the connection code
into one class, called Connector , shown in Example 4-5 .
Example4-5.A connection client convenience class, Connector.java
package com.cassandraguide.hotel;
import static com.cassandraguide.hotel.Constants.KEYSPACE;
import org.apache.cassandra.thrift.Cassandra;
import org.apache.cassandra.thrift.InvalidRequestException;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TFramedTransport;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransport;
import org.apache.thrift.transport.TTransportException;
//simple convenience class to wrap connections, just to reduce repeat code
public class Connector {
TTransport tr = new TSocket("localhost", 9160);
// returns a new connection to our keyspace
public Cassandra.Client connect() throws TTransportException,
TException, InvalidRequestException {
TFramedTransport tf = new TFramedTransport(tr);