/// <summary>
/// Update changes to the current entity compared to an input <paramref name="newdata" /> and set the entity to a proper state for updating.
/// </summary>
/// <param name="newdata">The "new" entity acting as the source of the changes, if any.</param>
/// <returns>
/// </returns>
public void UpdateChanges(EventType newdata)
{
int cnt = 0;
if (EventTypeName != newdata.EventTypeName)
{
EventTypeName = newdata.EventTypeName;
IsEventTypeNameModified = true;
cnt++;
}
IsEntityChanged = cnt > 0;
}
/// <summary>
/// Internal use
/// </summary>
public EventType ShallowCopy(bool allData = false, bool preserveState = false, bool checkLoadState = false)
{
EventType e = new EventType();
e.StartAutoUpdating = false;
e.ID = ID;
e.EventTypeName = EventTypeName;
if (preserveState)
e.IsEventTypeNameModified = IsEventTypeNameModified;
else
e.IsEventTypeNameModified = false;
e.DistinctString = GetDistinctString(true);
e.IsPersisted = IsPersisted;
if (preserveState)
e.IsEntityChanged = IsEntityChanged;
else
e.IsEntityChanged = false;
e.StartAutoUpdating = true;
return e;
}
/// <summary>
/// Merge changes inside entity <paramref name="from" /> to the entity <paramref name="to" />. Any changes in <paramref name="from" /> that is not changed in <paramref name="to" /> is updated inside <paramref name="to" />.
/// </summary>
/// <param name="from">The "old" entity acting as merging source.</param>
/// <param name="to">The "new" entity which inherits changes made in <paramref name="from" />.</param>
/// <returns>
/// </returns>
public static void MergeChanges(EventType from, EventType to)
{
if (to.IsPersisted)
{
if (from.IsEventTypeNameModified && !to.IsEventTypeNameModified)
{
to.EventTypeName = from.EventTypeName;
to.IsEventTypeNameModified = true;
}
}
else
{
to.IsPersisted = from.IsPersisted;
to.ID = from.ID;
to.EventTypeName = from.EventTypeName;
to.IsEventTypeNameModified = from.IsEventTypeNameModified;
}
}
/// <summary>
/// Whether or not the present entity is identitical to <paramref name="other" />, in the sense that they have the same (set of) intrinsic identifiers.
/// </summary>
/// <param name="other">The entity to be compared to.</param>
/// <returns>
/// The result of comparison.
/// </returns>
public bool IsEntityTheSame(EventType other)
{
if (other == null)
return false;
else
return ID == other.ID;
}
/// <summary>
/// Whether or not the present entity is identitical to <paramref name="other" />, in the sense that they have the same (set of) primary key(s).
/// </summary>
/// <param name="other">The entity to be compared to.</param>
/// <returns>
/// The result of comparison.
/// </returns>
public bool IsEntityIdentical(EventType other)
{
if (other == null)
return false;
if (ID != other.ID)
return false;
return true;
}
/// <summary>
/// <see cref="EventCalendar.EventTypeRef" /> is not initialized when the entity is created. Clients could call this method to load it provided a proper delegate <see cref="EventCalendar.DelLoadEventTypeRef" /> was setup
/// before calling it.
/// </summary>
public void LoadEventTypeRef()
{
if (EventTypeID == null || _EventTypeRef != null)
return;
if (DelLoadEventTypeRef != null)
_EventTypeRef = DelLoadEventTypeRef();
}
/// <summary>
/// Internal use
/// </summary>
public EventType ShallowCopy(bool allData = false)
{
EventType e = new EventType();
e.IsInitializing = true;
e.ID = ID;
e.EventTypeName = EventTypeName;
e.DistinctString = GetDistinctString(true);
e.IsPersisted = true;
e.IsEntityChanged = false;
e.IsInitializing = false;
return e;
}
