我对这个背景有一个非常奇怪的问题。
这是父对象（订单标题，IEntity是一个空接口）：
public class OrderEntity : IEntity
{
public virtual int prg_ordine { get; set; }
public virtual int num_anno { get; set; }
public virtual int num_doc { get; set; }
public virtual String num_doc_esteso { get; set; }
public virtual DateTime? dat_doc { get; set; }
public virtual String cod_clifor_c { get; set; }
public virtual String rag_soc { get; set; }
public virtual DateTime? dat_evasione { get; set; }
public virtual decimal qta_peso_lordo_kg { get; set; }
public virtual decimal qta_peso_netto_kg { get; set; }
public virtual decimal qta_totale { get; set; }
public virtual String ind_sped { get; set; }
public virtual String ind_sped_div { get; set; }
public virtual String rag_soc_div { get; set; }
public virtual String cod_agente { get; set; }
public virtual String des_agente { get; set; }
public virtual String cod_pag { get; set; }
public virtual String des_pag { get; set; }
public virtual String ind_stato_evas { get; set; }
public virtual int cod_commessa_num { get; set; }
public virtual String des_num_esterno { get; set; }
public virtual ClientEntity client { get; set; }
public virtual ICollection<OrderItemEntity> orderItems { get; set; }
}
这是子对象（订单行）：
public class OrderItemEntity : IEntity
{
public virtual int prg_ordine { get; set; }
public virtual int prg_ordine_riga { get; set; }
public virtual String cod_art_completo { get; set; }
public virtual String cod_clifor_c { get; set; }
public virtual String rag_soc { get; set; }
public virtual int num_doc { get; set; }
public virtual String num_doc_esteso { get; set; }
public virtual DateTime? dat_doc { get; set; }
public virtual String cod_art { get; set; }
public virtual String tipo_art { get; set; }
public virtual int prg_art { get; set; }
public virtual String ind_tiporiga { get; set; }
public virtual String cod_um_doc { get; set; }
public virtual String des_articolo_riga { get; set; }
public virtual decimal qta_daevadere { get; set; }
public virtual decimal qta_evasa { get; set; }
public virtual decimal qta_ordine { get; set; }
public virtual DateTime? dat_evasione { get; set; }
public virtual DateTime? dat_evas_riga { get; set; }
public virtual String note { get; set; }
public virtual bool gestisci_pezzatura { get; set; }
public virtual int numero_pezzi { get; set; }
public virtual decimal quantita_pezzo { get; set; }
public virtual string commessa { get; set; }
public virtual int num_riga { get; set; }
public virtual ArticoloDisponibilitaEntity articoloDisponibilita { get; set; }
public virtual OrderEntity order { get; set; }
public override bool Equals(object obj)
{
return base.Equals(obj);
}
public override int GetHashCode()
{
return base.GetHashCode();
}
}
这是提到的另外两个对象：
public class ClientEntity : IEntity
{
public virtual String cod_clifor { get; set; }
public virtual String des_ragsoc { get; set; }
public virtual String indirizzo { get; set; }
public virtual String codice_e_descrizione
{
get
{
return cod_clifor + " - " + des_ragsoc;
}
}
public virtual ICollection<OrderEntity> orders { get; set; }
}
public class ArticoloDisponibilitaEntity :IEntity
{
public virtual String cod_art_completo { get; set; }
public virtual decimal qta_esistente { get; set; }
public virtual decimal qta_in_distinte_lavorazione { get; set; }
public virtual decimal qta_in_distinte_aperte { get; set; }
public virtual decimal qta_libera_alla_vendita()
{
var ret = qta_esistente - qta_in_distinte_aperte - qta_in_distinte_lavorazione;
if(ret < 0)
ret = 0;
return ret;
}
}
以下是Fluent nHibernate映射类：
public class OrderEntityMap : ClassMap<OrderEntity>
{
public OrderEntityMap()
{
this.Id(x => x.prg_ordine);
this.Map(x => x.num_anno);
this.Map(x => x.num_doc);
this.Map(x => x.num_doc_esteso);
this.Map(x => x.dat_doc);
this.Map(x => x.cod_clifor_c);
this.Map(x => x.rag_soc);
this.Map(x => x.dat_evasione);
this.Map(x => x.qta_peso_lordo_kg);
this.Map(x => x.qta_peso_netto_kg);
this.Map(x => x.qta_totale);
this.Map(x => x.ind_sped);
this.Map(x => x.ind_sped_div);
this.Map(x => x.rag_soc_div);
this.Map(x => x.cod_agente);
this.Map(x => x.des_agente);
this.Map(x => x.cod_pag);
this.Map(x => x.des_pag);
this.Map(x => x.ind_stato_evas);
this.Map(x => x.cod_commessa_num);
this.Map(x => x.des_num_esterno);
References<ClientEntity>(x => x.client, "cod_clifor_c").Not.Nullable();
this.HasMany<OrderItemEntity>(x => x.orderItems).KeyColumn("prg_ordine").Not.LazyLoad().Cascade.All();
this.Table("VW_E_OrdiniTestate");
this.ReadOnly();
}
}
public class OrderItemEntityMap : ClassMap<OrderItemEntity>
{
public OrderItemEntityMap()
{
this.CompositeId()
.KeyProperty(x => x.prg_ordine, "prg_ordine_riga")
.KeyReference(x => x.order, "prg_ordine");
this.Map(x => x.prg_ordine );
this.Map(x => x.prg_ordine_riga );
this.Map(x => x.cod_art_completo );
this.Map(x => x.cod_clifor_c );
this.Map(x => x.rag_soc );
this.Map(x => x.num_doc );
this.Map(x => x.num_doc_esteso );
this.Map(x => x.dat_doc );
this.Map(x => x.cod_art );
this.Map(x => x.tipo_art );
this.Map(x => x.prg_art );
this.Map(x => x.ind_tiporiga );
this.Map(x => x.cod_um_doc );
this.Map(x => x.des_articolo_riga );
this.Map(x => x.qta_daevadere );
this.Map(x => x.qta_evasa );
this.Map(x => x.qta_ordine );
this.Map(x => x.dat_evasione );
this.Map(x => x.dat_evas_riga );
this.Map(x => x.note );
this.Map(x => x.gestisci_pezzatura );
this.Map(x => x.numero_pezzi );
this.Map(x => x.quantita_pezzo);
this.Map(x => x.commessa);
this.Map(x => x.num_riga);
References<ArticoloDisponibilitaEntity>(x => x.articoloDisponibilita, "cod_art_completo").Not.Nullable();
References<OrderEntity>(x => x.order, "prg_ordine").Not.Nullable();
this.Table("VW_E_OrdiniRighe");
this.ReadOnly();
}
}
public class ClientEntityMap : ClassMap<ClientEntity>
{
public ClientEntityMap()
{
this.Table("VW_E_Clienti");
this.Id(x => x.cod_clifor);
this.Map(x=> x.des_ragsoc);
this.Map(x => x.indirizzo);
this.HasMany(x => x.orders).KeyColumn("cod_clifor_c");
}
}
public class ArticoloDisponibilitaEntityMap : ClassMap<ArticoloDisponibilitaEntity>
{
public ArticoloDisponibilitaEntityMap()
{
this.Table("VW_E_Articoli_Disp");
this.Id(x => x.cod_art_completo);
this.Map(x => x.qta_esistente);
this.Map(x => x.qta_in_distinte_aperte);
this.Map(x => x.qta_in_distinte_lavorazione);
this.ReadOnly();
}
}
此查询：
return All().FetchMany(x => x.orderItems).Fetch(x => x.client).Where(x => x.cod_clifor_c == filters.clientId).ToList();
导致执行此查询：
select orderentit0_.prg_ordine as prg1_11_0_,
orderitems1_.prg_ordine_riga as prg1_12_1_,
orderitems1_.prg_ordine as prg2_12_1_,
cliententi2_.cod_clifor as cod1_3_2_,
orderentit0_.num_anno as num2_11_0_,
orderentit0_.num_doc as num3_11_0_,
orderentit0_.num_doc_esteso as num4_11_0_,
orderentit0_.dat_doc as dat5_11_0_,
orderentit0_.cod_clifor_c as cod6_11_0_,
orderentit0_.rag_soc as rag7_11_0_,
orderentit0_.dat_evasione as dat8_11_0_,
orderentit0_.qta_peso_lordo_kg as qta9_11_0_,
orderentit0_.qta_peso_netto_kg as qta10_11_0_,
orderentit0_.qta_totale as qta11_11_0_,
orderentit0_.ind_sped as ind12_11_0_,
orderentit0_.ind_sped_div as ind13_11_0_,
orderentit0_.rag_soc_div as rag14_11_0_,
orderentit0_.cod_agente as cod15_11_0_,
orderentit0_.des_agente as des16_11_0_,
orderentit0_.cod_pag as cod17_11_0_,
orderentit0_.des_pag as des18_11_0_,
orderentit0_.ind_stato_evas as ind19_11_0_,
orderentit0_.cod_commessa_num as cod20_11_0_,
orderentit0_.des_num_esterno as des21_11_0_,
orderitems1_.cod_art_completo as cod3_12_1_,
orderitems1_.cod_clifor_c as cod4_12_1_,
orderitems1_.rag_soc as rag5_12_1_,
orderitems1_.num_doc as num6_12_1_,
orderitems1_.num_doc_esteso as num7_12_1_,
orderitems1_.dat_doc as dat8_12_1_,
orderitems1_.cod_art as cod9_12_1_,
orderitems1_.tipo_art as tipo10_12_1_,
orderitems1_.prg_art as prg11_12_1_,
orderitems1_.ind_tiporiga as ind12_12_1_,
orderitems1_.cod_um_doc as cod13_12_1_,
orderitems1_.des_articolo_riga as des14_12_1_,
orderitems1_.qta_daevadere as qta15_12_1_,
orderitems1_.qta_evasa as qta16_12_1_,
orderitems1_.qta_ordine as qta17_12_1_,
orderitems1_.dat_evasione as dat18_12_1_,
orderitems1_.dat_evas_riga as dat19_12_1_,
orderitems1_.note as note12_1_,
orderitems1_.gestisci_pezzatura as gestisci21_12_1_,
orderitems1_.numero_pezzi as numero22_12_1_,
orderitems1_.quantita_pezzo as quantita23_12_1_,
orderitems1_.commessa as commessa12_1_,
orderitems1_.num_riga as num25_12_1_,
orderitems1_.prg_ordine as prg2_0__,
orderitems1_.prg_ordine_riga as prg1_0__,
cliententi2_.des_ragsoc as des2_3_2_,
cliententi2_.indirizzo as indirizzo3_2_
from VW_E_OrdiniTestate orderentit0_
left outer join VW_E_OrdiniRighe orderitems1_
on orderentit0_.prg_ordine = orderitems1_.prg_ordine
left outer join VW_E_Clienti cliententi2_
on orderentit0_.cod_clifor_c = cliententi2_.cod_clifor
where orderentit0_.cod_clifor_c = '000030' /* @p0 */
这完全没问题。
问题是，在上面的查询之后，然后执行一个查询PER ORDER ROW，如下所示：
SELECT orderiteme0_.prg_ordine_riga as prg1_12_0_,
orderiteme0_.prg_ordine as prg2_12_0_,
orderiteme0_.cod_art_completo as cod3_12_0_,
orderiteme0_.cod_clifor_c as cod4_12_0_,
orderiteme0_.rag_soc as rag5_12_0_,
orderiteme0_.num_doc as num6_12_0_,
orderiteme0_.num_doc_esteso as num7_12_0_,
orderiteme0_.dat_doc as dat8_12_0_,
orderiteme0_.cod_art as cod9_12_0_,
orderiteme0_.tipo_art as tipo10_12_0_,
orderiteme0_.prg_art as prg11_12_0_,
orderiteme0_.ind_tiporiga as ind12_12_0_,
orderiteme0_.cod_um_doc as cod13_12_0_,
orderiteme0_.des_articolo_riga as des14_12_0_,
orderiteme0_.qta_daevadere as qta15_12_0_,
orderiteme0_.qta_evasa as qta16_12_0_,
orderiteme0_.qta_ordine as qta17_12_0_,
orderiteme0_.dat_evasione as dat18_12_0_,
orderiteme0_.dat_evas_riga as dat19_12_0_,
orderiteme0_.note as note12_0_,
orderiteme0_.gestisci_pezzatura as gestisci21_12_0_,
orderiteme0_.numero_pezzi as numero22_12_0_,
orderiteme0_.quantita_pezzo as quantita23_12_0_,
orderiteme0_.commessa as commessa12_0_,
orderiteme0_.num_riga as num25_12_0_
FROM VW_E_OrdiniRighe orderiteme0_
WHERE orderiteme0_.prg_ordine_riga = 1 /* @p0 */
and orderiteme0_.prg_ordine = 22 /* @p1 */
这是出乎意料且不受欢迎的;我怀疑映射中有问题，但似乎对我来说一切都很好。 有关为何会发生这种情况以及如何避免这种情况的任何提示？
谢谢， 马里奥
答案 0 :(得分：0)
我认为你的问题在于子实体中的GetHashCode方法的实现，当你有一个复合id时你必须告诉Nh如何重新组合实体。
尝试实现这两种方法：
public override bool Equals(object obj)
{
OrderItemEntity objfrom = (OrderItemEntity)obj;
return ((this.prg_ordine == objfrom.prg_ordine) && (this.prg_ordine_riga == objfrom.prg_ordine_riga));
}
public override int GetHashCode()
{
unchecked
{
return ((this.prg_ordine * 100000) + this.prg_ordine_riga);
}
再见 马可