当表具有一对多关系时,流畅的 nhibernate 会生成错误的 SQL
我有两张表,一张是 UserDetails,另一张是 UserRoles。我按照以下方式映射它们。通过此插入操作,一切顺利,但当我尝试从用户对象获取角色列表时,抛出异常。我发现,Hibernate 生成的 SQL 在 ware 子句中将 USERCODE 列作为 User_id 。如何克服这个问题。请帮我。
用户类:
public virtual string Code { get; set; }
public virtual string FirstName { get; set; }
public virtual string LastName { get; set; }
public virtual string MiddleName { get; set; }
.......
public virtual IList<UserRole> Roles { get; set; }
public virtual IList<UserResource> Resources { get; set; }
用户映射:
Table("USER_DETAILS");
Schema("PROJECTDOCS");
Id(x => x.Code).Column("CODE").GeneratedBy.Assigned();
Map(x => x.FirstName).Column("FIRSTNAME").Not.Nullable().Length(100);
Map(x => x.LastName).Column("LASTNAME").Length(100).Not.Nullable();
Map(x => x.MiddleName).Column("MIDDLENAME").Length(100);
...
HasMany(x => x.Roles).Inverse().Cascade.All();
UserRole 类:
public virtual long UserRoleID { get; set; }
public virtual User UserCode { get; set; }
public virtual long RoleID { get; set; }
public virtual string CreatedBy { get; set; }
public virtual DateTime CreatedDate { get; set; }
public virtual string UpdatedBy { get; set; }
public virtual DateTime UpdatedDate { get; set; }
UserRole 映射:
Table("USER_ROLES");
Schema("PROJECTDOCS");
Id(x => x.UserRoleID).Column("URID").GeneratedBy.Increment();
Map(x => x.RoleID).Column("ROLEID").Not.Nullable();
Map(x => x.CreatedBy).Column("CREATEDBY").Not.Nullable().Length(36);
Map(x => x.CreatedDate).Column("CREATEDDATE").Not.Nullable().Default(DateTime.Now.ToString());
Map(x => x.UpdatedBy).Column("UPDATEDBY").Not.Nullable().Length(36);
Map(x => x.UpdatedDate).Column("UPDATEDDATE").Not.Nullable().Default(DateTime.Now.ToString());
References(x => x.UserCode).Column("USERCODE");
最终生成的 SQL 为:
[SQL:选择角色0_.User_id为User8_1_、角色0_.URID为URID1_、角色0_.URID为URID2_0_、角色0_.ROLEID为ROLEID2_0_、角色0_.CREATEDBY为CREATEDBY2_0_、角色0_.CREATEDDATE为CREATEDD4_2_0_、角色0_.UPDATEDBY为UPDATEDBY2 _0_, Roles0_.UPDATEDDATE 为 UPDATEDD6_2_0_,roles0_.USERCODE 为 USERCODE2_0_ FROM PROJECTDOCS.USER_ROLES Roles0_ WHERE roles0_.User_id=?]
粗体列名称是磨损的内容。
提前致谢, 普拉迪普
I have two tables, one UserDetails and another UserRoles. I mapped them in the following way. With this insert operation went fine but when i try to get the list of roles from user object, an exception is throwing. What i identified is, the SQL generated by Hibernate has USERCODE column as User_id in whare clause. How to over come this problem. Please help me.
User Class:
public virtual string Code { get; set; }
public virtual string FirstName { get; set; }
public virtual string LastName { get; set; }
public virtual string MiddleName { get; set; }
.......
public virtual IList<UserRole> Roles { get; set; }
public virtual IList<UserResource> Resources { get; set; }
User Map:
Table("USER_DETAILS");
Schema("PROJECTDOCS");
Id(x => x.Code).Column("CODE").GeneratedBy.Assigned();
Map(x => x.FirstName).Column("FIRSTNAME").Not.Nullable().Length(100);
Map(x => x.LastName).Column("LASTNAME").Length(100).Not.Nullable();
Map(x => x.MiddleName).Column("MIDDLENAME").Length(100);
...
HasMany(x => x.Roles).Inverse().Cascade.All();
UserRole Class:
public virtual long UserRoleID { get; set; }
public virtual User UserCode { get; set; }
public virtual long RoleID { get; set; }
public virtual string CreatedBy { get; set; }
public virtual DateTime CreatedDate { get; set; }
public virtual string UpdatedBy { get; set; }
public virtual DateTime UpdatedDate { get; set; }
UserRole Map:
Table("USER_ROLES");
Schema("PROJECTDOCS");
Id(x => x.UserRoleID).Column("URID").GeneratedBy.Increment();
Map(x => x.RoleID).Column("ROLEID").Not.Nullable();
Map(x => x.CreatedBy).Column("CREATEDBY").Not.Nullable().Length(36);
Map(x => x.CreatedDate).Column("CREATEDDATE").Not.Nullable().Default(DateTime.Now.ToString());
Map(x => x.UpdatedBy).Column("UPDATEDBY").Not.Nullable().Length(36);
Map(x => x.UpdatedDate).Column("UPDATEDDATE").Not.Nullable().Default(DateTime.Now.ToString());
References(x => x.UserCode).Column("USERCODE");
The final SQL generated was:
[SQL: SELECT roles0_.User_id as User8_1_, roles0_.URID as URID1_, roles0_.URID as URID2_0_, roles0_.ROLEID as ROLEID2_0_, roles0_.CREATEDBY as CREATEDBY2_0_, roles0_.CREATEDDATE as CREATEDD4_2_0_, roles0_.UPDATEDBY as UPDATEDBY2_0_,
roles0_.UPDATEDDATE as UPDATEDD6_2_0_, roles0_.USERCODE as USERCODE2_0_ FROM PROJECTDOCS.USER_ROLES roles0_ WHERE roles0_.User_id=?]
The bolded column name is what going worng.
Thanks in advance,
Pradeep
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看来您缺少 UserClass 中 HasMany 到 UserRoles 的关键列。你可能需要这样做:
It looks like you are missing the key column on your HasMany to UserRoles in your UserClass. You need to probably do this: