public async Task <IPagedList <TResult> > GetPagedAsync <TResult>(IPagedSpecification <TEntity> specification, Expression <Func <TEntity, TResult> > selector)
{
var query = QuerySet;
if (specification.Includes.Any())
{
var includeProperties = specification.Includes?.Where(ip => ip != null).ToArray() ?? Enumerable.Empty <Expression <Func <TEntity, object> > >().ToArray();
foreach (var includeProperty in includeProperties)
{
query = query.Include(includeProperty);
}
}
else if (specification.IncludeStrings.Any())
{
var includeProperties = specification.IncludeStrings?.Where(ip => !string.IsNullOrWhiteSpace(ip)).ToArray() ?? Enumerable.Empty <string>().ToArray();
foreach (var includeProperty in includeProperties)
{
query = query.Include(includeProperty);
}
}
if (specification.Predicate != null)
{
query = query.Where(specification.Predicate);
}
if (specification.OrderBy != null)
{
query = specification.Order == Order.Ascending ? query.OrderBy(specification.OrderBy) : query.OrderByDescending(specification.OrderBy);
}
if (specification.PagingEnabled)
{
var result = query.Select(selector).ToPagedList(specification.Page, specification.RecordsPerPage);
return(result);
}
else
{
var result = await query.Select(selector).ToListAsync();
return(result.ToPagedList(1, result.Count));
}
}
public async Task <IPagedList <TEntity> > GetPagedAsync(IPagedSpecification <TEntity> specification)
{
return(await GetPagedAsync <TEntity>(specification, e => e));
}
