import java.util.concurrent.atomic.AtomicLong;

/**
 *
 * <pre>
 *  Copyright (C): 2012
 *
 *  Description:
 *   序列的原子实现,可实现并发
 *
 *  Revision History:
 *
 * </pre>
 */
public class AtomicLongSequence implements ISequence
{
	private SequenceEnum sequenceEnum;

	private AtomicLong al ;

	public AtomicLongSequence(String sequenceName){
		this.sequenceEnum = Enum.valueOf(SequenceEnum.class, sequenceName);
		al = new AtomicLong(sequenceEnum.Init());
	}

	public long getNextVal(){
		return al.incrementAndGet();
	}

}