// Prevayler(TM) - The Open-Source Prevalence Layer.
// Copyright (C) 2001 Klaus Wuestefeld.
// This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.

package org.prevayler.util.clock;

import java.util.Date;


/** A deterministic Clock that always returns the same time until it is forced to advance. A new BrokenClock's time() starts off at new Date(Long.MIN_VALUE);
 */
public class BrokenClock implements Clock, java.io.Serializable {

	protected long _millis = Long.MIN_VALUE;
	private Date _time = new Date(_millis);


	public Date time() { return _time; }


	synchronized void advanceTo(Date newTime) {
		long newMillis = newTime.getTime();
		if (newMillis <= _millis) throw new RuntimeException("A Clock can only be set to the future. Current time: " + _time + " new time: " + newTime);
		_millis = newMillis;
		_time = newTime;
	}

}

// Prevayler(TM) - The Open-Source Prevalence Layer.
// Copyright (C) 2001 Klaus Wuestefeld.
// This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.

package org.prevayler.util.clock;

import java.util.Date;


/** A deterministic Clock that always returns the same time until it is forced to advance. A new BrokenClock's time() starts off at new Date(Long.MIN_VALUE);
 */
public class BrokenClock implements Clock, java.io.Serializable {

	protected long _millis = Long.MIN_VALUE;
	private Date _time = new Date(_millis);


	public Date time() { return _time; }


	synchronized void advanceTo(Date newTime) {
		long newMillis = newTime.getTime();
		if (newMillis < _millis) throw new RuntimeException("A Clock can only be set to the future. Current time: " + _time + " new time: " + newTime);
		_millis = newMillis;
		_time = newTime;
	}

}

Allow clock to be set to current time.