/// <inheritdoc />
public virtual async Task DeleteAsync(TId id, CancellationToken cancellationToken)
{
_traceWriter.LogMethodStart(new
{
id
});
using var collector = new PlaceholderResourceCollector(_resourceFactory, _dbContext);
TResource resource = collector.CreateForId <TResource, TId>(id);
foreach (RelationshipAttribute relationship in _resourceGraph.GetRelationships <TResource>())
{
// Loads the data of the relationship, if in EF Core it is configured in such a way that loading the related
// entities into memory is required for successfully executing the selected deletion behavior.
if (RequiresLoadOfRelationshipForDeletion(relationship))
{
NavigationEntry navigation = GetNavigationEntry(resource, relationship);
await navigation.LoadAsync(cancellationToken);
}
}
_dbContext.Remove(resource);
await SaveChangesAsync(cancellationToken);
}
/// <inheritdoc />
public virtual async Task DeleteAsync(TId id, CancellationToken cancellationToken)
{
_traceWriter.LogMethodStart(new
{
id
});
// This enables OnWritingAsync() to fetch the resource, which adds it to the change tracker.
// If so, we'll reuse the tracked resource instead of a placeholder resource.
var emptyResource = _resourceFactory.CreateInstance <TResource>();
emptyResource.Id = id;
await _resourceDefinitionAccessor.OnWritingAsync(emptyResource, OperationKind.DeleteResource, cancellationToken);
using var collector = new PlaceholderResourceCollector(_resourceFactory, _dbContext);
TResource resource = collector.CreateForId <TResource, TId>(id);
foreach (RelationshipAttribute relationship in _resourceGraph.GetRelationships <TResource>())
{
// Loads the data of the relationship, if in EF Core it is configured in such a way that loading the related
// entities into memory is required for successfully executing the selected deletion behavior.
if (RequiresLoadOfRelationshipForDeletion(relationship))
{
NavigationEntry navigation = GetNavigationEntry(resource, relationship);
await navigation.LoadAsync(cancellationToken);
}
}
_dbContext.Remove(resource);
await SaveChangesAsync(cancellationToken);
await _resourceDefinitionAccessor.OnWriteSucceededAsync(resource, OperationKind.DeleteResource, cancellationToken);
}