/// <summary>
/// Delete Thing entities from the store, including sub entites marked for deletion
/// </summary>
/// <param name="entitiesBeingHandled">Entities already being deleted further up the delete stack</param>
/// <param name="things">The Things to delete</param>
/// <param name="toDelete">Entity types to cascade to, if they are loaded</param>
internal void Delete(List <Entity> entitiesBeingHandled, Flags toDelete, IEnumerable <Thing> things)
{
if (things == null)
{
throw new ArgumentNullException("things");
}
Log("Delete", things.Select <Thing, int>(entity => entity.Identity).ToArray <int>(), EntityType.None);
// Copy the list of entities being handled, and add this new set of entities to it.
// We're handling those now.
List <Entity> entitiesNowBeingHandled = new List <Entity>(entitiesBeingHandled);
entitiesNowBeingHandled.AddRange(things);
// Loop over each entity and delete it.
foreach (Thing thing in things)
{
// Already being deleted higher up the stack?
if (entitiesBeingHandled.ContainsEntity(thing))
{
continue;
}
//Allow partial/subclasses to perform additional processing
OnBeforeDeleteEntity(thing);
// Delete child entities
if ((toDelete & EntityType.Widget) == EntityType.Widget &&
thing.WidgetListPopulated)
{
foreach (Widget childWidget in thing.WidgetList)
{
if (!entitiesBeingHandled.ContainsEntity(childWidget))
{
WidgetRepo.Delete(entitiesNowBeingHandled, toDelete, childWidget);
}
}
}
// Now delete the entity
if (this.Mapper.Delete("DeleteThing", thing.Identity) != 1)
{
ThrowThingEntityException(thing.Identity);
}
thing.ResetChanged();
//Allow partial/subclasses to perform additional processing
OnAfterDeleteEntity(thing);
}
//Save to the repository updates table
if (things.Count() > 0)
{
RaiseModelChanged();
}
}
/// <summary>
/// Save (insert/update) a Thing into the store
/// </summary>
/// <param name="entitiesBeingHandled">Entities already being saved further up the save stack</param>
/// <param name="things">The Things to save</param>
/// <param name="toSave">Entity types to cascade to, if they are loaded</param>
internal void Save(List <Entity> entitiesBeingHandled, Flags toSave, params Thing[] things)
{
if (things == null)
{
throw new ArgumentNullException("things");
}
Log("Save", things.Select <Thing, int>(entity => entity.Identity).ToArray <int>(), EntityType.None);
// Copy the list of entities being handled, and add this new set of entities to it.
// We're handling those now.
List <Entity> entitiesNowBeingHandled = new List <Entity>(entitiesBeingHandled);
entitiesNowBeingHandled.AddRange(things);
// Loop over each entity and save it.
foreach (Thing thing in things)
{
// Already being saved higher up the stack?
if (entitiesBeingHandled.ContainsEntity(thing))
{
continue;
}
// Allow derived/partial class to do extra work
OnBeforeSaveEntity(thing);
bool saved = false;
try
{
// Save the entity
if (thing.IsNew)
{
this.Mapper.Insert("InsertThing", thing);
saved = true;
}
else if (thing.IsChanged)
{
if (this.Mapper.Update("UpdateThing", thing) != 1)
{
ThrowThingEntityException(thing.Identity);
}
saved = true;
}
}
catch (Exception ex)
{
throw EntityLogger.WriteUnexpectedException(
ex,
"Failed to insert/update Entity",
Category.EntityFramework,
thing);
}
// Save child entities... update their key to us
if ((toSave & EntityType.Widget) == EntityType.Widget &&
thing.WidgetListPopulated)
{
foreach (Widget childWidget in thing.WidgetList)
{
childWidget.ThingId = thing.Identity;
if (!entitiesBeingHandled.ContainsEntity(childWidget))
{
if (childWidget.IsDeleted)
{
WidgetRepo.Delete(entitiesNowBeingHandled, toSave, childWidget);
}
else
{
WidgetRepo.Save(entitiesNowBeingHandled, toSave, childWidget);
}
}
}
}
// Post save protocol
if (saved)
{
// Allow derived/partial class to do extra work
OnAfterSaveEntity(thing);
thing.Reset();
//The insert/update will have resulted in a new database_update row, inform interested parties
RaiseModelChanged();
}
}
}
