/// <inheritdoc/>
public IEnumerable <TResource> BeforeDelete <TResource>(IEnumerable <TResource> resources, ResourcePipeline pipeline) where TResource : class, IIdentifiable
{
if (GetHook(ResourceHook.BeforeDelete, resources, out var container, out var node))
{
var relationships = node.RelationshipsToNextLayer.Select(p => p.Attribute).ToArray();
var targetResources = LoadDbValues(typeof(TResource), (IEnumerable <TResource>)node.UniqueResources, ResourceHook.BeforeDelete, relationships) ?? node.UniqueResources;
var affected = new ResourceHashSet <TResource>(targetResources, node.LeftsToNextLayer());
IEnumerable <TResource> updated = container.BeforeDelete(affected, pipeline);
node.UpdateUnique(updated);
node.Reassign(_resourceFactory, resources);
}
// If we're deleting an article, we're implicitly affected any owners related to it.
// Here we're loading all relations onto the to-be-deleted article
// if for that relation the BeforeImplicitUpdateHook is implemented,
// and this hook is then executed
foreach (var entry in node.LeftsToNextLayerByRelationships())
{
var rightType = entry.Key;
var implicitTargets = entry.Value;
FireForAffectedImplicits(rightType, implicitTargets, pipeline);
}
return(resources);
}
/// <inheritdoc/>
public IEnumerable <TResource> BeforeCreate <TResource>(IEnumerable <TResource> resources, ResourcePipeline pipeline) where TResource : class, IIdentifiable
{
if (GetHook(ResourceHook.BeforeCreate, resources, out var container, out var node))
{
var affected = new ResourceHashSet <TResource>((HashSet <TResource>)node.UniqueResources, node.LeftsToNextLayer());
IEnumerable <TResource> updated = container.BeforeCreate(affected, pipeline);
node.UpdateUnique(updated);
node.Reassign(_resourceFactory, resources);
}
FireNestedBeforeUpdateHooks(pipeline, _traversalHelper.CreateNextLayer(node));
return(resources);
}
