按 nHibernate 排序导致“Antlr.Runtime.NoViableAltException”

Question

我收到以下错误

引发了“Antlr.Runtime.NoViableAltException”类型的异常。 [.OrderBy[ORM.Entities.Core.Message,System.DateTime](.Where[ORM.Entities.Core.Message](NHibernate.Linq.NhQueryable`1[ORM.Entities.Core.Message], 报价（（x，）=> (AndAlso(AndAlso(String.op_Equality(x.ConcerningItemType, p1), 等于（x.ConcerningItemId，p2）），OrElse（等于（x.Sender.Id，p3）， .Any[ORM.Entities.Core.MessageRecipient](x.Recipients, (r, ) => (Equal(r.Employee.Id, p4)), ))))), ), Quote((x, ) => (.FirstORM.Entities.Core.AuditGroup.Created)), )]

当我有一个 IQueryable 结果集（刚刚对其应用了一些逻辑），然后我尝试在调用 ToList() 之前按子属性变量对其进行排序

var results = query.Where(x => x.ConcerningItemType == "1422" && x.ConcerningItemId == EnquiryId && //Messages for this Enquiry
                            (x.Sender.Id == EmployeeId || x.Recipients.Any(r => r.Employee.Id == EmployeeId)));

然后我尝试订购导致错误

var results2 = results.OrderBy(x => x.AuditGroup.First().Created).ToList();

如果我改为执行以下操作，则不会出现错误（移动 tolist 以强制它访问数据库）

var results3 = results.ToList().OrderBy(x => x.AuditGroup.First().Created);

---

询问要求的更多信息

审计组类

    public class AuditGroup : Entity
{
    public virtual string Guid { get; set; }
    public virtual string PageName { get; set; }
    public virtual string ControlId { get; set; }
    public virtual string ItemType { get; set; }
    public virtual int ItemId { get; set; }
    public virtual int EmployeeId { get; set; }
    public virtual string IPAddress { get; set; }
    public virtual string Parameters { get; set; }
    public virtual DateTime Created { get; set; }

}

消息类

    public class Message : Entity
{
    // This class represents the standard address fields, for reuse in other entities
    // 
    public virtual int Id { get; set; }
    public virtual int ConcerningItemId { get; set; }
    public virtual String ConcerningItemType { get; set; }
    public virtual String Subject { get; set; }
    public virtual String Body { get; set; }
    public virtual int RecipientCount { get; set; }
    public virtual String RowStatus { get; set; }

    public virtual Employee Sender { get; set; }
    public virtual ICollection<MessageRecipient> Recipients { get; set; }

    //eww have to do this to be able to access the created date of the message (stored in AuditGroup... Stupidly!)
    public virtual ICollection<AuditGroup> AuditGroup { get; set; }
}

消息映射

        public MessageMapping()
    {
        Id(x => x.Id).Column("MessageId");
        Map(x => x.ConcerningItemId).Nullable().Column("ItemId");
        Map(x => x.ConcerningItemType).Nullable().Column("ItemType");

        Map(x => x.Subject).Nullable();
        Map(x => x.Body);
        Map(x => x.RecipientCount).Column("MessageRecipientCount");
        Map(x => x.RowStatus).Column("MessageRowStatus");

        References(x => x.Sender).Column("EmployeeId");
        HasMany(x => x.Recipients).KeyColumn("MessageId");

        //AuditGroup has ItemId-ItemType Needs to map to MessageId-ItemType
        HasMany(x => x.AuditGroup).KeyColumn("ItemId").Where("ItemType = '1419'");
    }

Answer 1

请提供更多信息（实体和地图）

我很确定 x.AuditGroup.First().Created 是罪魁祸首。我这样说是因为我试图认为 SQL 查询生成了，但我不能。

我建议为AuditGroup 创建一个别名并使用它进行排序。这就是我的大致做法。

AuditGroup auditGroupAlias = null;

query.JoinAlias(p => p.AuditGroup, () => auditGroupAlias)
     .OrderBy(()=>auditGroupAlias.Created)

再次用部分信息我只能给出部分解决方案。