UpToDatePolicy.java

/*****************************************************************************
 * Copyright (c) 2006-2013, Cloudsmith Inc.
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the copyright holder
 * listed above, as the Initial Contributor under such license. The text of
 * such license is available at www.eclipse.org.
 *****************************************************************************/
package org.eclipse.buckminster.core.cspec.model;

/**
 * The up to date policy tells Buckminster how to go about determining the
 * timestamp of a product when deciding if it is up to date in respect to its
 * prerequisites.
 * 
 * @author Thomas Hallgren
 */
public enum UpToDatePolicy {
	/**
	 * Never trust a product defined as a folder since the expected number of
	 * files is unknown
	 */
	DEFAULT,

	/**
	 * Let the associated actor decide
	 */
	ACTOR,

	/**
	 * Trust timestamp only when the product contains the number of files
	 * denoted in attribute 'count'
	 */
	COUNT,

	/**
	 * Trust timestamp of a product that matches the action prerequisites in
	 * number and optional pattern. The 'count' attribute may be used to denote
	 * file additions
	 */
	MAPPER,

	/**
	 * Trust timestamp of any product that contains at least one file
	 */
	NOT_EMPTY
}