Package object for my db classes

_package.scala

package object db {  
	type Stamp = java.sql.Timestamp
	type JodaTime = org.joda.time.DateTime

	    
	implicit object JodaTimeSQLMapper extends MappedTypeMapper[JodaTime,Stamp] with BaseTypeMapper[JodaTime] {
	   def map(j: JodaTime) = new Stamp(j.getMillis())
	     
	   def comap(s: Stamp) = new JodaTime(s)
	   
	   override def sqlType = Some(java.sql.Types.TIMESTAMP)
	   override def sqlTypeName = Some("timestamp")
	}
}