public IQueryable <T> FindAll(ILinqSpecification <T> specification)
{
using (var session = new Session <T>(typeof(T).Name))
{
return(specification.SatisfyingElementsFrom(session.Queryable));
}
}
/// <inheritdoc />
public Task <TEntity> FindOneAsync(ILinqSpecification <TEntity> specification, CancellationToken cancellationToken = default)
{
if (specification == null)
{
throw new ArgumentNullException(nameof(specification));
}
return(specification.SatisfyingElementsFrom(Session.Query <TEntity>())
.SingleOrDefaultAsync(cancellationToken));
}
public void AllSpecifications_ReturnOneCustomer(ILinqSpecification <Customer> specification, int expectedId)
{
var sut = specification.GetExpression();
var result = Context.Customers
.Where(sut).ToList();
Assert.Single(result);
Assert.Equal(expectedId, result.First().CustomerId);
}
public void AllSpecificationsNegation_ReturnTwoCustomers(ILinqSpecification <Customer> specification, int first,
int second)
{
var sut = specification.GetExpression();
var result = Context.Customers
.Where(sut).ToList();
Assert.Equal(2, result.Count);
Assert.Equal(first, result.First().CustomerId);
Assert.Equal(second, result.Last().CustomerId);
}
/// <summary>
/// Finds an item by a specification.
/// </summary>
/// <param name="specification">The specification.</param>
/// <returns>
/// The matching item or <c>null</c>.
/// </returns>
public T FindOne(ILinqSpecification <T> specification)
{
return(specification.SatisfyingElementsFrom(this.Session.Query <T>()).SingleOrDefault());
}
/// <summary>
/// Finds all items by a specification.
/// </summary>
/// <param name="specification">The specification.</param>
/// <returns>
/// All matching items.
/// </returns>
public IQueryable <T> FindAll(ILinqSpecification <T> specification)
{
return(specification.SatisfyingElementsFrom(this.Session.Query <T>()));
}
/// <inheritdoc />
public Task <TEntity> FindOneAsync(ILinqSpecification <TEntity> specification, CancellationToken cancellationToken = default)
{
return(specification.SatisfyingElementsFrom(Session.Query <TEntity>()).SingleOrDefaultAsync(cancellationToken));
}
public static IQueryable <T> Apply <T>(this IQueryable <T> source, ILinqSpecification <T> spec)
where T : class
=> spec.Apply(source);
/// <summary>
/// Finds an item by a specification.
/// </summary>
/// <param name="specification">The specification.</param>
/// <returns>
/// The matching item.
/// </returns>
public T FindOne(ILinqSpecification <T> specification)
{
return(specification.SatisfyingElementsFrom(FindAll()).SingleOrDefault());
}
/// <summary> /// Finds all items by a specification. /// </summary> /// <param name="specification">The specification.</param> /// <returns> /// All matching items. /// </returns> public IQueryable <TEntity> FindAll(ILinqSpecification <TEntity> specification) => specification.SatisfyingElementsFrom(FindAll());
int IQuery <ILinqSpecification <TDest>, int> .Ask(ILinqSpecification <TDest> spec) => CountQuery(spec).Count();
IEnumerable <TDest> IQuery <ILinqSpecification <TDest>, IEnumerable <TDest> > .Ask(ILinqSpecification <TDest> spec) => Query(spec).ToArray();
public T FindOne(ILinqSpecification <T> specification)
{
return(this.FindAll(specification).FirstOrDefault());
}
