我如何使用 QueryOver 执行以下操作并且没有公式字段。
我有以下父子关系
public class Club
{
public string Name { get; set; }
public IList<Membership> Memberships { get; set; }
}
public class Membership
{
public boolean Cancelled { get; set; }
public Club Club { get; set; }
}
我有以下查询返回 15 个俱乐部并将结果转换为 DTO，我需要向此查询添加
RowCount属于每个俱乐部且未被取消的成员(member)资格。
IEnumerable<ClubIndexViewModelLineSummary> results = _querySession.QueryOver<Club>()
.OrderBy(c => c.IsActive).Desc
.OrderBy(c => c.Name).Asc
.SelectList(list => list
.Select(c => c.Id).WithAlias(() => sum.Id)
.Select(c => c.Name).WithAlias(() => sum.Name)
.Select(c => c.IsActive).WithAlias(() => sum.IsActive)
.Select(c => c.NumberOfWeeks).WithAlias(() => sum.NumberOfWeeks))
.TransformUsing(Transformers.AliasToBean<ClubIndexViewModelLineSummary>())
.Skip(start)
.Take(15)
.Future<ClubIndexViewModelLineSummary>();
请您参考如下方法:
经过更多研究，这是有效的查询结果:
Club clubAlias = null;
IEnumerable<ClubIndexViewModelLineSummary> results =
_querySession.QueryOver<Club>(() => clubAlias)
.OrderBy(c => c.IsActive).Desc
.OrderBy(c => c.Name).Asc
.SelectList(list => list
.Select(c => c.Id).WithAlias(() => sum.Id)
.Select(c => c.Name).WithAlias(() => sum.Name)
.Select(c => c.IsActive).WithAlias(() => sum.IsActive)
.Select(c => c.NumberOfWeeks).WithAlias(() => sum.NumberOfWeeks)
.SelectSubQuery
(
QueryOver.Of<ClubMembership>()
.Where(c => c.Canceled == false)
.And(c=> c.Club.Id == clubAlias.Id)
.ToRowCountQuery()
).WithAlias(()=> sum.ActiveMembers))
.TransformUsing(Transformers.AliasToBean<ClubIndexViewModelLineSummary>())
.Skip(start)
.Take(15)
.Future<ClubIndexViewModelLineSummary>();
