/**

  * Copyright 2010 The Kuali Foundation 

  *

  * Licensed under the Educational Community 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.osedu.org/licenses/ECL-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.kuali.student.r2.common.infc;

 import java.util.Date;

 /**

  * A common service pattern for entities. This interface is applied to

  * temporal entities with effective dates.

  *

  * @author nwright

  */

 public interface HasEffectiveDates {

     /**

      * Date/time this object became effective. Must be less than or

      * equal to the expirationDate specified.

      * 

      * @name Effective Date

      */

     public Date getEffectiveDate();

     /**

      * Date/time this relationship is no longer effective. Must be

      * greater than or equal to the effectiveDate specified.

      * 

      * @name Expiration Date

      */

     public Date getExpirationDate();

 }