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/**************************************************************************************
 * Copyright (C) 2006-2015 EsperTech Inc. All rights reserved.                        *
 * http://www.espertech.com/esper                                                          *
 * http://www.espertech.com                                                           *
 * ---------------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the GPL license       *
 * a copy of which has been included with this distribution in the license.txt file.  *
 **************************************************************************************/
package com.espertech.esperio;

import com.espertech.esper.client.EPRuntime;
import com.espertech.esper.schedule.ScheduleSlot;

/**
 * Base class for sendable event, provides timestamp and schedule slot.
 */
public abstract class AbstractSendableEvent implements SendableEvent {

	private final long timestamp;
	private final ScheduleSlot scheduleSlot;

    /**
     * Ctor.
     * @param timestamp to send
     * @param scheduleSlot the schedule slot assigned by scheduling service
     */
    public AbstractSendableEvent(long timestamp, ScheduleSlot scheduleSlot) {
		if(scheduleSlot == null)
		{
			throw new NullPointerException("ScheduleSlot cannot be null");
		}

		this.timestamp = timestamp;
		this.scheduleSlot = scheduleSlot;
	}

	public abstract void send(AbstractSender sender);

	/* (non-Javadoc)
	 * @see com.espertech.esperio.SendableEvent#getScheduleSlot()
	 */
	public ScheduleSlot getScheduleSlot()
	{
		return scheduleSlot;
	}

	/* (non-Javadoc)
	 * @see com.espertech.esperio.SendableEvent#getSendTime()
	 */
	public long getSendTime()
	{
		return timestamp;
	}
}