/*
* Transaction: Delete a doctor from the database
* Returns true iff the doctor exists in the database and
* it was successfully deleted.
*/
public static bool DeleteDoctor(Doctor delDoctor)
{
Doctor checkDoctor = DoctorPersistence.GetDoctor(delDoctor);
if (checkDoctor == null)
{
return(false);
}
return(DoctorPersistence.DeleteDoctor(delDoctor));
}
/*
* Transaction: Update a doctor in the database
* Returns true iff the doctor exists in the database and
* it was successfully changed.
*/
public static bool ChangeDoctor(Doctor changeDoctor)
{
Doctor checkDoctor = DoctorPersistence.GetDoctor(changeDoctor);
if (checkDoctor == null)
{
return(false);
}
return(DoctorPersistence.ChangeDoctor(changeDoctor));
}
/*
* Transaction: Add a new doctor to the database
* Returns true iff the new doctor has a unique ISBN
* and it was successfully added.
*/
public static bool AddNewDoctor(Doctor newDoctor)
{
// Verify that the doctor doesn't already exist
Doctor oldDoctor = DoctorPersistence.GetDoctor(newDoctor);
// oldDoctor should be null, if this is a new doctor
if (oldDoctor != null)
{
return(false);
}
return(DoctorPersistence.AddDoctor(newDoctor));
}
