private IEnumerable <WriteModel <T> > UpdateChangedModels(TrackedModelCollection <T> trackedModels)
{
var updatedModels = trackedModels.OfState(TrackedModelState.Existing).Where(m => m.IsDirty).ToArray();
var updateStrategy = UpdateStrategy.ForType <T>();
return(updatedModels.Select(m => updateStrategy.GetWriteModelForUpdate(m)));
}
public IEnumerable <WriteModel <T> > GetChangesForWrite(TrackedModelCollection <T> trackedModels)
{
return(InsertNewModels(trackedModels)
.Concat(DeleteRemovedModels(trackedModels))
.Concat(UpdateChangedModels(trackedModels)));
}
private IEnumerable <WriteModel <T> > DeleteRemovedModels(TrackedModelCollection <T> trackedModels)
{
var removedModels = trackedModels.OfState(TrackedModelState.Removed).Select(m => m.Model).ToArray();
return(removedModels.Select(m => new DeleteOneModel <T>(GenericBsonFilters.MatchSingleById(m))));
}
private IEnumerable <WriteModel <T> > InsertNewModels(TrackedModelCollection <T> trackedModels)
{
var newModels = trackedModels.OfState(TrackedModelState.New).Select(m => m.Model).ToArray();
return(newModels.Select(m => new InsertOneModel <T>(m)));
}
