OwnerId

Marks a field or property as containing the owner identifier for multi-tenant scenarios.

The owner ID represents the tenant or user context that owns the data. This annotation is used by the framework to:

• Enforce ownership-based access control

• Route commands to correct tenant contexts

• Isolate data between different owners

• Generate tenant-specific API endpoints

The annotated field/property should contain a unique identifier for the owner/tenant, such as a user ID, organization ID, or tenant key.

Example usage:

@AggregateRoot
@AggregateRoute(owner = AggregateRoute.Owner.ALWAYS)
class UserProfile(
    @AggregateId
    val profileId: String,

    @OwnerId
    val userId: String  // The user who owns this profile
)

// Command targeting the user's profile
data class UpdateProfileCommand(
    @AggregateId
    val profileId: String,

    @OwnerId
    val userId: String,  // Must match the authenticated user

    val newName: String
)

See also