我正在研究Nhibernate，我有两个名为Customer和CusotmerRole的类及其映射（CustomerMap和CustomerRoleMap）。现在我想用数据库中名为As Customer_CustomerRole_Mapping的第三个表映射这两个表。表Customer_CustomerRole_Mapping在数据库中有两个列，一个是Customer_Id（主键和带有Customer表的ForeignKey，另一个是CustomerRole_Id，它也是带有CustomerRole表的PrimaryKey和Foreign Key。所以我想知道如何将Customer_CustomerRole_Mapping映射到Customer和CustomerRole。另外我需要问我必须为此创建另一个地图，或者我可以映射这些现有的类。感谢提前。
代码：
Customer.Cs：
public class Customer : BaseEntity
{
private ICollection<ExternalAuthenticationRecord> _externalAuthenticationRecords;
private ICollection<CustomerRole> _customerRoles;
private ICollection<ShoppingCartItem> _shoppingCartItems;
private ICollection<RewardPointsHistory> _rewardPointsHistory;
private ICollection<ReturnRequest> _returnRequests;
private ICollection<Address> _addresses;
/// <summary>
/// Ctor
/// </summary>
public Customer()
{
this.CustomerGuid = Guid.NewGuid();
this.PasswordFormat = PasswordFormat.Clear;
}
/// <summary>
/// Gets or sets the customer Guid
/// </summary>
public virtual Guid CustomerGuid { get; set; }
/// <summary>
/// Gets or sets the username
/// </summary>
public virtual string Username { get; set; }
/// <summary>
/// Gets or sets the email
/// </summary>
public virtual string Email { get; set; }
/// <summary>
/// Gets or sets the password
/// </summary>
public virtual string Password { get; set; }
/// <summary>
/// Gets or sets the password format
/// </summary>
public virtual int PasswordFormatId { get; set; }
/// <summary>
/// Gets or sets the password format
/// </summary>
public virtual PasswordFormat PasswordFormat
{
get { return (PasswordFormat)PasswordFormatId; }
set { this.PasswordFormatId = (int)value; }
}
/// <summary>
/// Gets or sets the password salt
/// </summary>
public virtual string PasswordSalt { get; set; }
/// <summary>
/// Gets or sets the admin comment
/// </summary>
public virtual string AdminComment { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer is tax exempt
/// </summary>
public virtual bool IsTaxExempt { get; set; }
/// <summary>
/// Gets or sets the affiliate identifier
/// </summary>
public virtual int AffiliateId { get; set; }
/// <summary>
/// Gets or sets the vendor identifier with which this customer is associated (maganer)
/// </summary>
public virtual int VendorId { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer is active
/// </summary>
public virtual bool Active { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer has been deleted
/// </summary>
public virtual bool Deleted { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer account is system
/// </summary>
public virtual bool IsSystemAccount { get; set; }
/// <summary>
/// Gets or sets the customer system name
/// </summary>
public virtual string SystemName { get; set; }
/// <summary>
/// Gets or sets the last IP address
/// </summary>
public virtual string LastIpAddress { get; set; }
/// <summary>
/// Gets or sets the date and time of entity creation
/// </summary>
public virtual DateTime CreatedOnUtc { get; set; }
/// <summary>
/// Gets or sets the date and time of last login
/// </summary>
public virtual DateTime? LastLoginDateUtc { get; set; }
/// <summary>
/// Gets or sets the date and time of last activity
/// </summary>
public virtual DateTime LastActivityDateUtc { get; set; }
#region Navigation properties
/// <summary>
/// Gets or sets customer generated content
/// </summary>
public virtual ICollection<ExternalAuthenticationRecord> ExternalAuthenticationRecords
{
get { return _externalAuthenticationRecords ?? (_externalAuthenticationRecords = new List<ExternalAuthenticationRecord>()); }
protected set { _externalAuthenticationRecords = value; }
}
/// <summary>
/// Gets or sets the customer roles
/// </summary>
public virtual ICollection<CustomerRole> CustomerRoles
{
get { return _customerRoles ?? (_customerRoles = new List<CustomerRole>()); }
protected set { _customerRoles = value; }
}
/// <summary>
/// Gets or sets shopping cart items
/// </summary>
public virtual ICollection<ShoppingCartItem> ShoppingCartItems
{
get { return _shoppingCartItems ?? (_shoppingCartItems = new List<ShoppingCartItem>()); }
protected set { _shoppingCartItems = value; }
}
/// <summary>
/// Gets or sets reward points history
/// </summary>
public virtual ICollection<RewardPointsHistory> RewardPointsHistory
{
get { return _rewardPointsHistory ?? (_rewardPointsHistory = new List<RewardPointsHistory>()); }
protected set { _rewardPointsHistory = value; }
}
/// <summary>
/// Gets or sets return request of this customer
/// </summary>
public virtual ICollection<ReturnRequest> ReturnRequests
{
get { return _returnRequests ?? (_returnRequests = new List<ReturnRequest>()); }
protected set { _returnRequests = value; }
}
/// <summary>
/// Default billing address
/// </summary>
public virtual Address BillingAddress { get; set; }
/// <summary>
/// Default shipping address
/// </summary>
public virtual Address ShippingAddress { get; set; }
/// <summary>
/// Gets or sets customer addresses
/// </summary>
public virtual ICollection<Address> Addresses
{
get { return _addresses ?? (_addresses = new List<Address>()); }
protected set { _addresses = value; }
}
#endregion
}
CustomerRole.cs：
public partial class CustomerRole : BaseEntity
{
private ICollection<PermissionRecord> _permissionRecords;
/// <summary>
/// Gets or sets the customer role name
/// </summary>
public virtual string Name { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer role is marked as free shiping
/// </summary>
public virtual bool FreeShipping { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer role is marked as tax exempt
/// </summary>
public virtual bool TaxExempt { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer role is active
/// </summary>
public virtual bool Active { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the customer role is system
/// </summary>
public virtual bool IsSystemRole { get; set; }
/// <summary>
/// Gets or sets the customer role system name
/// </summary>
public virtual string SystemName { get; set; }
/// <summary>
/// Gets or sets a product identifier that is required by this customer role.
/// A customer is added to this customer role once a specified product is purchased.
/// </summary>
public virtual int PurchasedWithProductId { get; set; }
/// <summary>
/// Gets or sets the permission records
/// </summary>
public virtual ICollection<PermissionRecord> PermissionRecords
{
get { return _permissionRecords ?? (_permissionRecords = new List<PermissionRecord>()); }
protected set { _permissionRecords = value; }
}
}
CustomerMap.cs：
public class CustomerMap : ClassMap<Customer>
{
public CustomerMap()
{
Table("Customer");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("Id");
Map(x => x.CustomerGuid).Column("CustomerGuid").Not.Nullable();
Map(x => x.Username).Column("Username").Length(1000);
Map(x => x.Email).Column("Email").Length(1000);
Map(x => x.Password).Column("Password");
Map(x => x.PasswordFormatId).Column("PasswordFormatId").Not.Nullable().Precision(10);
Map(x => x.PasswordSalt).Column("PasswordSalt");
Map(x => x.AdminComment).Column("AdminComment");
Map(x => x.IsTaxExempt).Column("IsTaxExempt").Not.Nullable();
Map(x => x.AffiliateId).Column("AffiliateId").Not.Nullable();
Map(x => x.VendorId).Column("VendorId").Not.Nullable();
Map(x => x.Active).Column("Active").Not.Nullable();
Map(x => x.Deleted).Column("Deleted").Not.Nullable();
Map(x => x.IsSystemAccount).Column("IsSystemAccount").Not.Nullable();
Map(x => x.SystemName);
Map(x => x.LastIpAddress);
Map(x => x.CreatedOnUtc).Column("CreatedOnUtc").Not.Nullable();
Map(x => x.LastLoginDateUtc).Column("LastLoginDateUtc");
Map(x => x.LastActivityDateUtc).Column("LastActivityDateUtc");
References(x => x.BillingAddress).Column("BillingAddress_Id");
References(x => x.ShippingAddress).Column("ShippingAddress_Id");
}
}
CustomerRoleMap.cs：
public class CustomerRoleMap : ClassMap<CustomerRole>
{
public CustomerRoleMap()
{
Table("CustomerRole");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("Id");
Map(x => x.Name).Column("Name").Not.Nullable().Length(255);
Map(x => x.FreeShipping).Column("FreeShipping").Not.Nullable();
Map(x => x.TaxExempt).Column("TaxExempt").Not.Nullable();
Map(x => x.Active).Column("Active").Not.Nullable();
Map(x => x.IsSystemRole).Column("IsSystemRole").Not.Nullable();
Map(x => x.SystemName).Column("SystemName").Length(255);
Map(x => x.PurchasedWithProductId).Column("PurchasedWithProductId").Not.Nullable().Precision(10);
HasMany<CustomerRole>(x => x.Id).Table("Customer_CustomerRole_Mapping").KeyColumn("CustomerRole_Id");
}
}
答案 0 :(得分：0)
如果表中只有两个FK＆＃34; Customer_CustomerRole_Mapping＆＃34。 ，你不需要为这个表单独映射。
如果你的＆＃34; Customer_CustomerRole_Mapping＆＃34。有自己的SurrogateKey，或者除了两个FK之外的任何其他列...你需要一个映射（以及这个映射的poco / pojo类）。
客户映射
/* the below is how to do it without a surogatekey on the link table */
HasManyToMany<CustRoleNHEntity>(x => x.CustRoles)
.Table("Customer_CustomerRole_Mapping")
.ParentKeyColumns.Add("AbcCustomerUUID", p => p.UniqueKey("Emp_CustRole_Unique").Index("IX_ABC123"))
.ChildKeyColumns.Add("AbcCustRoleUUID", p => p.UniqueKey("Emp_CustRole_Unique"))
.Cascade.None()
;
CustRole Mapping
/* the below is how to do it without a surogatekey on the link table */
HasManyToMany<CustomerNHEntity>(x => x.MyCustomers) /* I think this is missing on the POCO */
.Table("Customer_CustomerRole_Mapping")
.ParentKeyColumns.Add("AbcCustRoleUUID", p => p.UniqueKey("Emp_CustRole_Unique").Index("IX_ABC123"))
.ChildKeyColumns.Add("AbcCustomerUUID", p => p.UniqueKey("Emp_CustRole_Unique"))
.Cascade.None()
;
您需要在CustomerRole poco / pojo上进行客户ICollection，我称之为＆＃34; MyCustomers＆＃34;在CustRole映射中。