/// <summary>
/// Creates an <see cref="IPaginated{T}" /> instance from the specified query.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <param name="paginatedCriteria">The paginated criteria.</param>
/// <returns></returns>
public static IPaginated <T> ToPaginated <T>(this IQueryable <T> query, IPaginatedCriteria paginatedCriteria)
{
return(new Paginated <T>(
query.ToPage(paginatedCriteria.StartIndex, paginatedCriteria.PageSize, paginatedCriteria.SortDescriptions),
query.Count(),
paginatedCriteria.CurrentPage,
paginatedCriteria.PageSize));
}
/// <summary>
/// Gets the paginated data.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <param name="paginatedCriteria">The paginated criteria.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentNullException">query</exception>
/// <exception cref="System.ArgumentNullException"></exception>
public static IQueryable <T> ToPage <T>(this IQueryable <T> query, IPaginatedCriteria paginatedCriteria)
{
if (query == null)
{
throw new ArgumentNullException("query");
}
return(query.ToPage(paginatedCriteria.StartIndex, paginatedCriteria.PageSize, paginatedCriteria.SortDescriptions));
}
/// <summary>
/// Creates an <see cref="IPaginated{T}" /> instance from the specified query.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <param name="paginatedCriteria">The paginated criteria.</param>
/// <returns></returns>
public static async Task <IPaginated <T> > ToPaginatedAsync <T>(this IQueryable <T> query,
IPaginatedCriteria paginatedCriteria)
{
return(new Paginated <T>(
await query.ToPage(paginatedCriteria.StartIndex, paginatedCriteria.PageSize).ToListAsync(),
await query.CountAsync(),
paginatedCriteria.CurrentPage,
paginatedCriteria.PageSize));
}
/// <summary>
/// Creates an <see cref="IPaginated{T}" /> instance from the specified query.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <param name="paginatedCriteria">The paginated criteria.</param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public static async Task <IPaginated <T> > ToPaginatedAsync <T>(this IQueryable <T> query,
IPaginatedCriteria paginatedCriteria, CancellationToken cancellationToken = default)
{
var data = await query.ToPage(paginatedCriteria)
.ToListAsync(cancellationToken);
var count = await query.CountAsync(cancellationToken);
// await Task.WhenAll(dataTask, countTask);
// "A second operation started on this context before a previous operation completed. This is usually caused by different threads using the same instance of DbContext. For more information on how to avoid threading issues with DbContext, see https://go.microsoft.com/fwlink/?linkid=2097913.
return(new Paginated <T>(
data,
count,
paginatedCriteria.CurrentPage,
paginatedCriteria.PageSize));
}
public static IQueryable <T> ToPage <T>(this IQueryable <T> query, IPaginatedCriteria criteria)
{
return(query.ToPage(criteria.StartIndex, criteria.PageSize));
}
/// <inheritdoc /> public async Task <IPaginated <TDto> > GetPaginated <TDto>(IPaginatedCriteria criteria, CancellationToken cancellationToken) => await Queryable .ProjectTo <TDto>(Mapper.ConfigurationProvider) .ToPaginatedAsync(criteria ?? new PaginatedCriteria(), cancellationToken);
/// <inheritdoc />
public virtual async Task <IPaginated <TEntity> > GetPaginated(IPaginatedCriteria criteria = null,
CancellationToken cancellationToken = default) =>
await DbSet.ToPaginatedAsync(criteria ?? new PaginatedCriteria(), cancellationToken);
