package org.lsst.ccs.config;
   
   import org.hibernate.annotations.Immutable;
   
   import javax.persistence.Entity;
   import javax.persistence.GeneratedValue;
   import javax.persistence.Id;
   
   /**
   * used to describe at which moment in time a value was set (used by ParameterConfiguration in Engineering mode)
   * @author bamade
   */
  // Date: 21/05/12
  
      @Entity
      @Immutable
  class AValueEvent extends ValueEvent {
      private static final long serialVersionUID = -8787682942631887448L;
      @Id
      @GeneratedValue
      private long id;
  
       AValueEvent() {
      }
  
      public AValueEvent( long time, String value) {
          super(time, value);
      }
  
      @Override
      public long getId() {
          return id ;
      }
  
       void setId(long id) {
          this.id = id;
      }
  }