protected virtual ISelect <TEntity> ApplyPaging(ISelect <TEntity> query, TGetListInput input)
{
if (input is IPagingDto pageDto)
{
return(query.Page(pageDto.Page + 1, pageDto.Size));
}
return(query);
}
/// <summary>
/// Creates the asynchronous.
/// </summary>
/// <typeparam name="TInput">The type of the input.</typeparam>
/// <param name="source">The source.</param>
/// <param name="pageNumber">The page number.</param>
/// <param name="pageSize">Size of the page.</param>
/// <param name="mapper">The mapper.</param>
/// <returns></returns>
public static async Task <PagedList <T> > CreateAsync <TInput>(ISelect <TInput> source, int pageNumber, int pageSize, IMapper mapper) where TInput : class
{
var count = await source.CountAsync();
var items = await source.Page(pageNumber, pageSize).ToListAsync();
return(new PagedList <T>(mapper.Map <List <T> >(items), count, pageNumber, pageSize));
}
/// <summary>
/// Creates the asynchronous.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="pageNumber">The page number.</param>
/// <param name="pageSize">Size of the page.</param>
/// <returns></returns>
public static async Task <PagedList <T> > CreateAsync(ISelect <T> source, int pageNumber, int pageSize)
{
var count = await source.CountAsync();
var items = await source.Page(pageNumber, pageSize).ToListAsync();
return(new PagedList <T>(items, count, pageNumber, pageSize));
}
protected virtual ISelect <TEntity> ApplyPaging(ISelect <TEntity> query, TGetListInput input)
{
//Try to use paging if available
if (input is IPageDto pageDto)
{
return(query.Page(pageDto.Page + 1, pageDto.Count));
}
//No paging
return(query);
}
public static Page <T> ToPage <T>(this ISelect <T> select, int page, int size) where T : class
{
Page <T> result = new Page <T>();
var data = select.Page(page, size).Count(out long total).ToList <T>();
result.TotalItems = total;
result.Items = data;
result.ItemsPerPage = size;
result.CurrentPage = page;
result.TotalPages = (long)Math.Ceiling(result.TotalItems / (double)size);
return(result);
}
public async Task <List <T> > SelectAsync <T, TNavigate>(Expression <Func <T, bool> > whereExp = null, IEnumerable <T> ids = null, Expression <Func <T, TNavigate> > navigateExp = null, int pageIndex = 0, int pageSize = 0, DbTransaction transaction = null)
where T : DatabaseModel
where TNavigate : DatabaseModel
{
ISelect <T> select = sql.Select <T>(ids).Where(whereExp).Include(navigateExp).WithTransaction(transaction);
if (pageSize > 0)
{
select = select.Page(pageIndex, pageSize);
}
return(await select.ToListAsync());
}
public PagedResultDto <User> Get([FromQuery] PageDto pageDto)
{
ISelect <User> selectPost = _fsql
.Select <User>();
List <User> lists = selectPost
.Page(pageDto.PageNumber, pageDto.PageSize)
.ToList();
long total = selectPost.Count();
return(new PagedResultDto <User>(total, lists));
}
public async Task <List <TightenModel> > GetTightensAsync(string code, DateTime sTime, DateTime endTime, int page, int pagesize)
{
if (FreeHanlder.SqliteHandler == null)
{
throw new NullReferenceException("未初始化SqliteHandler数据库访问程序;");
}
ISelect <TightenModel> query = FreeHanlder.SqliteHandler.Select <TightenModel>()
.Where(t => t.EngineCode.Contains(code));
if (sTime != null)
{
query = query.Where(t => t.CreateTime > sTime);
}
if (endTime != null)
{
query = query.Where(t => t.CreateTime < endTime);
}
return(await query.Page(page, pagesize).NoTracking().ToListAsync());
}
/// <summary>
/// FreeSql query state
/// </summary>
/// <param name="select"></param>
/// <param name="currentPageNumber"></param>
/// <param name="pageSize"></param>
/// <param name="includeNestedMembers"></param>
public FreeSqlQueryState(ISelect <T> select, int currentPageNumber, int pageSize, bool includeNestedMembers)
{
if (select == null)
{
throw new ArgumentNullException(nameof(select));
}
if (currentPageNumber < 0)
{
throw new ArgumentOutOfRangeException(nameof(currentPageNumber), $"{nameof(currentPageNumber)} can not be less than zero");
}
if (pageSize < 0)
{
throw new ArgumentOutOfRangeException(nameof(pageSize), $"{nameof(pageSize)} can not be less than zero");
}
_mLazyFreeSqlQueryMembers = new Lazy <IEnumerable <T> >(() => select.Page(currentPageNumber, pageSize).ToList(includeNestedMembers));
}
public static ISelect <T> Page <T>(this ISelect <T> source, PageDto pageDto) where T : class, new()
{
return(source.Page(pageDto.PageNumber, pageDto.PageNumber));
}
public static List <TEntity> ToPagerList <TEntity>(this ISelect <TEntity> source, PageDto pageDto, out long count) where TEntity : class
{
count = source.Count();
//Page 方法是从1开始
return(source.Page(pageDto.Page + 1, pageDto.Count).ToList());
}
