/// <summary>
/// Queries an entity by its identifier.
/// </summary>
/// <typeparam name="TEntity">Type of the entity to retreive.</typeparam>
/// <param name="context">Query Source to use for retreiving the entity.</param>
/// <param name="id">Identifier of the entity to retreive.</param>
/// <returns>The entity of the specified type with the specified identifier.</returns>
public static Task <TEntity> GetById <TEntity>(this IEntityQuerySource context, int id)
where TEntity : EntityBase
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
return(context.FirstOrDefault(q => q.Get <TEntity>().Where(x => x.Id == id)));
}
/// <summary>
/// Gets an account by its email address.
/// </summary>
/// <param name="email">email address of the account to get.</param>
/// <param name="suppressException">If true, no exception will be thrown if the account could not be found.</param>
/// <returns>The account with the specified email address; or null if it does not exist.</returns>
/// <exception cref="EmailNotRegisteredException">Thrown if the account could not be found.</exception>
private async Task <Account> GetAccountByEmail(string email, bool suppressException)
{
var account = await _entityQuerySource.FirstOrDefault(q => q.Get <Account>()
.Where(a => string.Equals(a.EmailAddress, email, StringComparison.OrdinalIgnoreCase)));
if (!suppressException && account == null)
{
throw new EmailNotRegisteredException(email);
}
return(account);
}