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IRepositoryBase

Namespace: RA.Utilities.Data.Abstractions

The IRepositoryBase<T> interface serves as a unified, all-in-one contract for a generic repository. Its primary purpose is to combine both read and write operations into a single, convenient interface for entities that require full CRUD (Create, Read, Update, Delete) functionality.

It achieves this by inheriting from two more specialized interfaces:

  1. IReadRepositoryBase<T>: This interface defines all the methods for querying data (e.g., GetByIdAsync, ListAsync).
  2. IWriteRepositoryBase<T>: This interface defines all the methods for mutating data (e.g., AddAsync, UpdateAsync, DeleteAsync).

By inheriting from both, IRepositoryBase<T> provides a complete set of standard data access methods without defining any of its own.

using RA.Utilities.Data.Entities;

namespace RA.Utilities.Data.Abstractions;

/// <summary>
/// Defines a base interface for both read and write repository operations on entities.
/// </summary>
/// <typeparam name="T">The type of the entity.</typeparam>
public interface IRepositoryBase<T> : IReadRepositoryBase<T>, IWriteRepositoryBase<T> where T : BaseEntity
{

}

Why is this useful?​

This design supports the Command Query Separation (CQS) principle by providing separate IReadRepositoryBase and IWriteRepositoryBase interfaces. However, in many common scenarios, a repository needs to handle both reading and writing. IRepositoryBase<T> acts as a convenient composite interface for these cases.

When you create a specific repository interface, like IProductRepository, you can inherit from IRepositoryBase<Product> to instantly equip it with a full suite of standard CRUD methods, saving you from having to declare them all manually.