NHibernate：Select 项在元素包中有条目

Question

我有一个 class 列表属性。

public class Paperboy{
     private int _id;
     private string _lastname;
     private string _firstname;
     private string _mobile;
     private string _phone;

     private IList<string> _additionalPhoneNumbers;
}

列表被映射为带有键和元素的包。

<class name="Paperboy" table="tblPaperboy" lazy="false">
 <id name="_id" column="Id" access="field" >
  <generator class="assigned"/>
 </id>
 <property name ="_lastname" column="Lastname" access ="field" />
 <property name ="_firstname" column="Firstname" access ="field" />
 <property name ="_phone" column="Phone" access ="field" />
 <property name ="_mobile" column="Mobile" access ="field" />

 <bag name="_additionalPhoneNumbers" access="field" fetch="subselect" lazy="false" table="tblPaperboyAdditionalPhoneNumbers">
  <key column="PaperboyId"/>
  <element column="PhoneNumber" type="string"/>     
 </bag>
</class>

现在我尝试通过 phone 号码（_phone、_mobile 或 _additionalPhoneNumbers）来 select paberboys。 _phone 和 _mobile 没问题，但我受困于其他号码。

我尝试使用条件 api 并结束查询。

标准Api不知道属性AdditionalPhoneNumbers

ICriteria criteria = session.CreateCriteria(typeof(Paperboy));
criteria.CreateAlias("_additionalPhoneNumbers", "AdditionalPhoneNumbers");

Disjunction or = Restrictions.Disjunction();
or.Add(Restrictions.Eq("_phone", number));
or.Add(Restrictions.Eq("_mobile", number));
or.Add(Restrictions.Eq("AdditionalPhoneNumbers", number));

criteria.Add(or);
criteria.SetMaxResults(1);
return criteria.UniqueResult<Paperboy>();

查询结束不知道包含：

 return query.Where(p => p.Mobile == number || p.Phone == number p.AdditionalPhoneNumbers.Contains(number)).Take(1).SingleOrDefault();

有人能帮帮我吗？

更新：

我被指向元素关键字。实施后我得到一个 SQL-Exception.

 ICriteria criteria = session.CreateCriteria(typeof(Paperboy));
 criteria.CreateAlias("_additionalPhoneNumbers", "APN");

 Disjunction or = Restrictions.Disjunction();
 or.Add(Restrictions.Eq("APN.elements", number));

 criteria.Add(or);
 criteria.SetMaxResults(1);
 return criteria.UniqueResult<Paperboy>();

像这样的异常。

System.Data.SqlClient.SqlException: Der mehrteilige Bezeichner 'apn1_.PhoneNumber' konnte nicht gebunden werden.

问题是属性的 where 子句中没有使用 join 的别名。 apn1_（哪里）与 additiona4_（连接）。

已制作SQL：

[SELECT TOP (@p0) this_.Id as Id3_1_, this_.BusinessId as BusinessId3_1_, this_.AgencyKey as AgencyKey3_1_, this_.Lastname as Lastname3_1_, this_.Firstname as Firstname3_1_, this_.Title as Title3_1_, this_.Street as Street3_1_, this_.Zip as Zip3_1_, this_.City as City3_1_, this_.Phone as Phone3_1_, this_.Mobile as Mobile3_1_, this_.Comment as Comment3_1_, this_.StaffId as StaffId3_1_, this_.IsActive as IsActive3_1_, agency3_.Id as Id1_0_, agency3_.BusinessId as BusinessId1_0_, agency3_.RegionKey as RegionKey1_0_, agency3_.Shorttext as Shorttext1_0_, agency3_.Longtext as Longtext1_0_, agency3_.CompanyCodeId as CompanyC6_1_0_ FROM tblPaperboy this_ left outer join tblAgency agency3_ on this_.AgencyKey=agency3_.Id inner join tblPaperboyAdditionalPhoneNumbers additiona4_ on this_.Id=additiona4_.PaperboyId WHERE (apn1_.PhoneNumber = @p1)]

Answer 1

几乎与我刚刚对之前的 NHibernate 问题给出的答案相同：

基于此问答：NHibernate How do I query against an IList property?

我试图证明 （如文档中所述） 我们可以使用魔法词 ".elements":

17.1.4.1. Alias and property references

所以查询将触及您案例中的字符串元素

//or.Add(Restrictions.Eq("AdditionalPhoneNumbers", number));
or.Add(Restrictions.Eq("AdditionalPhoneNumbers.elements", number));

这将支持过滤IList<string>

Answer 2

似乎 NHibernate < 4 在创建连接时存在错误。在 Radim Köhler and firo () 的帮助下，我最终使用了 HQL:

select
   paperboy
from
   Paperboy as paperboy 
left join 
   paperboy._additionalPhoneNumbers number
where
   paperboy._mobile = :nr or
   paperboy._phone = :nr or
   number = :nr

也可以通过使用 :nr in elements(paperboy._additionalPhoneNumbers) 来避免连接，但我无法替换附加号码中的某些字符。

NHibernate：Select 项在元素包中有条目

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17.1.4.1. Alias and property references