DataCenterReplication.java

/*
 * Copyright 2013-2014 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.cassandra.config;

/**
 * Simple data structure to be used when setting the replication factor for a given data center.
 */
public class DataCenterReplication {

	/**
	 * Creates a new {@link DataCenterReplication} given {@code dataCenter} and {@code replicationFactor}.
	 * 
	 * @param dataCenter must not be {@literal null}.
	 * @param replicationFactor
	 * @return
	 */
	public static DataCenterReplication of(String dataCenter, long replicationFactor) {
		return new DataCenterReplication(dataCenter, replicationFactor);
	}

	private final String dataCenter;
	private final long replicationFactor;

	private DataCenterReplication(String dataCenter, long replicationFactor) {

		this.dataCenter = dataCenter;
		this.replicationFactor = replicationFactor;
	}

	/**
	 * @return the data center.
	 */
	public String getDataCenter() {
		return dataCenter;
	}

	/**
	 * @return the replication factor.
	 */
	public long getReplicationFactor() {
		return replicationFactor;
	}

	@Override
	public String toString() {

		StringBuffer sb = new StringBuffer();
		sb.append(getClass().getSimpleName());
		sb.append(" [dataCenter='").append(dataCenter).append('\'');
		sb.append(", replicationFactor=").append(replicationFactor);
		sb.append(']');
		return sb.toString();
	}
}