/// <inheritdoc />
public virtual async Task AddToToManyRelationshipAsync(TId primaryId, ISet <IIdentifiable> secondaryResourceIds, CancellationToken cancellationToken)
{
_traceWriter.LogMethodStart(new { primaryId, secondaryResourceIds });
if (secondaryResourceIds == null)
{
throw new ArgumentNullException(nameof(secondaryResourceIds));
}
var relationship = _targetedFields.Relationships.Single();
if (secondaryResourceIds.Any())
{
using var collector = new PlaceholderResourceCollector(_resourceFactory, _dbContext);
var primaryResource = collector.CreateForId <TResource, TId>(primaryId);
await UpdateRelationshipAsync(relationship, primaryResource, secondaryResourceIds, collector, cancellationToken);
await SaveChangesAsync(cancellationToken);
}
}
/// <inheritdoc />
public virtual async Task DeleteAsync(TId id, CancellationToken cancellationToken)
{
_traceWriter.LogMethodStart(new { id });
using var collector = new PlaceholderResourceCollector(_resourceFactory, _dbContext);
var resource = collector.CreateForId <TResource, TId>(id);
foreach (var 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))
{
var navigation = GetNavigationEntry(resource, relationship);
await navigation.LoadAsync(cancellationToken);
}
}
_dbContext.Remove(resource);
await SaveChangesAsync(cancellationToken);
}
