dotnet-data/PoweredSoft.Data.Core/IAsyncQueryableService.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;

namespace PoweredSoft.Data.Core
{
    public interface IAsyncQueryableService
    {
        IEnumerable<IAsyncQueryableHandlerService> Handlers { get;  }

        IAsyncQueryableHandlerService GetAsyncQueryableHandler<T>(IQueryable<T> queryable);

        Task<T> FirstOrDefaultAsync<T>(IQueryable<T> queryable, CancellationToken cancellationToken = default(CancellationToken));
        Task<T> FirstOrDefaultAsync<T>(IQueryable<T> queryable, Expression<Func<T, bool>> predicate, CancellationToken cancellationToken = default(CancellationToken));
        Task<List<T>> ToListAsync<T>(IQueryable<T> queryable, CancellationToken cancellationToken = default(CancellationToken));
        Task<int> CountAsync<T>(IQueryable<T> queryable, CancellationToken cancellationToken = default(CancellationToken));
        Task<long> LongCountAsync<T>(IQueryable<T> queryable, CancellationToken cancellationToken = default(CancellationToken));
        Task<bool> AnyAsync<T>(IQueryable<T> queryable, Expression<Func<T, bool>> predicate, CancellationToken cancellationToken = default(CancellationToken));
        Task<bool> AnyAsync<T>(IQueryable<T> queryable, CancellationToken cancellationToken = default(CancellationToken));
    }
}