本文介绍了复杂类型:一个模型中有多个实例?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
是否可以使用Fluent api模型生成器在同一模型中包含多个复杂类型的实例?
Is there a way to have multiple instances of complex type inside the same model using Fluent api model builder?
public class Contact
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public Address PersonalAddress { get; set; }
public Address BusinessAddress { get; set; }
}
public class Address
{
public string Street{ get; set; }
public string City{ get; set; }
public string PostalCode{ get; set; }
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Configurations.Add(new ContactConfiguration());
modelBuilder.Configurations.Add(new AddressConfiguration());
}
=============== ================================================== ==============
==================================================================================
public class AddressConfiguration : ComplexTypeConfiguration<Address>
{
public AddressConfiguration()
{
//props
this.Property(t => t.Street)
.IsOptional()
.HasColumnName("AddressStreet")
.HasMaxLength(1024);
this.Property(t => t.PostalCode)
.IsOptional()
.HasColumnName("AddressPostalCode")
.HasMaxLength(64);
this.Property(t => t.City)
.IsOptional()
.HasColumnName("AddressCity")
.HasMaxLength(512);
}
}
推荐答案
(问题的自动回答部分转换为真实答案)
(Auto-answered part in the question converted to a real answer)
如果在同一CF模型中使用了多个复杂类型类实例,则在CF模型中设置这些类的配置像这样的级别:
If multiple complex type class instances are used in same CF Model, configuration of these classes is set at CF Model level like this:
public class ContactConfiguration : EntityTypeConfiguration<Contact>
{
public ContactConfiguration()
{
//props for PersonalAddress instance of Address complex type class
this.Property(t => t.PersonalAddress.Address.Street)
.HasColumnName("PersonalAddressStreet");
this.Property(t => t.PersonalAddress.Address.PostalCode)
.HasColumnName("PersonalAddressPostalCode");
this.Property(t => t.PersonalAddress.Address.City)
.HasColumnName("PersonalAddressCity");
//props for BusinessAddress instance of Address complex type class
this.Property(t => t.BusinessAddress.Address.Street)
.HasColumnName("BusinessAddressStreet");
this.Property(t => t.BusinessAddress.Address.PostalCode)
.HasColumnName("BusinessAddressPostalCode");
this.Property(t => t.BusinessAddress.Address.City)
.HasColumnName("BusinessAddressCity");
}
}
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