Class SharedResourceLoaderById<TResource, TId>

Namespace

Trellis.Authorization

Assembly

Trellis.Authorization.dll

Shared resource loader that loads a resource by ID. Register one per resource type instead of one ResourceLoaderById<TMessage, TResource, TId> per command.

public abstract class SharedResourceLoaderById<TResource, TId>

Type Parameters

TResource

The aggregate or entity type to load.

TId

The identifier type (e.g., OrderId).

Inheritance

object

SharedResourceLoaderById<TResource, TId>

Derived

FakeSharedResourceLoader<TResource, TId>

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Extension Methods

MaybeExtensions.AsMaybe<T>(T)

MaybeExtensions.ToResult<TValue>(TValue)

NullableExtensions.ToResult<T>(T?, Func<Error>)

NullableExtensions.ToResult<T>(T?, Error)

AggregateTestMutator.ClearMaybeField<TEntity, TValue>(TEntity, Expression<Func<TEntity, Maybe<TValue>>>)

AggregateTestMutator.SetMaybeField<TEntity, TValue>(TEntity, Expression<Func<TEntity, Maybe<TValue>>>, TValue?)

Examples

// ONE class serves ALL commands that authorize against Order
public sealed class OrderResourceLoader(IOrderRepository repo)
    : SharedResourceLoaderById<Order, OrderId>
{
    public override Task<Result<Order>> GetByIdAsync(OrderId id, CancellationToken ct)
        => repo.GetByIdAsync(id, ct);
}

Remarks

When a command implements both IAuthorizeResource<TResource> and IIdentifyResource<TResource, TId>, the pipeline automatically bridges to this shared loader — no per-command loader class needed.

Explicit IResourceLoader<TMessage, TResource> registrations always take priority over the shared loader.

Methods

GetByIdAsync(TId, CancellationToken)

Loads the resource by ID. Return Result.Failure with a NotFoundError if the resource does not exist.

public abstract Task<Result<TResource>> GetByIdAsync(TId id, CancellationToken cancellationToken)

Parameters

id TId

The resource identifier.

cancellationToken CancellationToken

Cancellation token.

Returns

Task<Result<TResource>>

A success result containing the loaded resource, or a failure result if not found.