使用 NUnit 测试 Fluent NHibernate 映射时出错。当Fluent NHibernate试图在持久化它的子( ContactType )之前在数据库中持久保存一个对象( Contact )时出现问题,从而给我一个外键违规:
NHibernate.Exceptions.GenericADOException : could not insert: Contact [...]
----> System.Data.SqlClient.SqlException : The INSERT statement conflicted with
the FOREIGN KEY constraint [...] with table ContactType
编辑:修改了供应商的映射,以便在HasMany()上使用Inverse()。还提供了我的映射测试示例。
现在,细节。
我有一个供应商,其中包含许多联系人(一对多)。 联系人与其他表 ContactType 具有多对一关系。请记住,我在这里简化了模型,因此我们可以专注于解决问题。
public class SupplierMap : ClassMap<Supplier>
{
public SupplierMap()
{
Table("Supplier");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("id");
HasMany(x => x.Contacts).KeyColumn("supplierId").Cascade.All().Inverse();
}
}
public class ContactMap : ClassMap<Contact>
{
public ContactMap()
{
Table("Contact");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("id");
References(x => x.ContactType).Column("contactTypeId");
References(x => x.Supplier).Column("supplierId").Cascade.All();
}
}
public class ContactTypeMap : ClassMap<ContactType>
{
public ContactTypeMap() {
Table("ContactType");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("id");
}
}
现在,当我测试 ContactMap 时,测试运行得很好,没有错误。但是,当我运行SupplierMap测试时,这就是我收到错误的地方。正如预期的那样,当我运行ContactMap测试时,我在跟踪中得到了类似的内容:
INSERT INTO ContactType [...]
INSERT INTO Contact [...]
SELECT [...]
[...]
ContactMap测试:
[Test]
public void CanCorrectlyMapContact()
{
new PersistenceSpecification<Contact>(Session)
.CheckProperty(c => c.Id, 1)
.CheckReference(c => c.ContactType, new ContactType() { Id = 1, Archived = false, DescriptionEn = Constants.LOREM_IPSUM_255, DescriptionFr = Constants.LOREM_IPSUM_255, NameEn = Constants.LOREM_IPSUM_50, NameFr = Constants.LOREM_IPSUM_50 })
.CheckReference(c => c.Title, new Title() { Id = 1, Archived = false, NameEn = Constants.LOREM_IPSUM_255, NameFr = Constants.LOREM_IPSUM_255, SortOrder = 0})
.CheckReference(c => c.Region, new Region() { Id = 1, Archived = false, NameEn = Constants.LOREM_IPSUM_128, NameFr = Constants.LOREM_IPSUM_128, SortOrder = 0 })
.VerifyTheMappings();
}
对于 SupplierMap 测试,我首先尝试插入联系人(不尝试插入 ContactType )。
SupplierMap测试:
[TestFixture]
public class SupplierMapTest : DatabaseSetup
{
private IList<Contact> tmpList;
public SupplierMapTest()
{
Contact tmpContact = new Contact()
{
Id = 1,
FirstName = Constants.LOREM_IPSUM_128,
LastName = Constants.LOREM_IPSUM_128,
Address = Constants.LOREM_IPSUM_128,
City = Constants.LOREM_IPSUM_128,
Email = Constants.LOREM_IPSUM_128,
FaxNumber = Constants.PHONE_NUMBER_50,
PhoneNumber = Constants.PHONE_NUMBER_50,
PostalCode = Constants.POSTAL_CODE_10,
Archived = false
};
tmpContact.ContactType = new ContactType { Id = 1, Archived = false, DescriptionEn = Constants.LOREM_IPSUM_255, DescriptionFr = Constants.LOREM_IPSUM_255, NameEn = Constants.LOREM_IPSUM_50, NameFr = Constants.LOREM_IPSUM_50 };
this.tmpList = new List<Contact>();
this.tmpList.Add(tmpContact);
}
/// <summary>
/// Verify if the maping is successfull
/// </summary>
[Test]
public void CanCorrectlyMapSupplier()
{
new PersistenceSpecification<Supplier>(Session)
.CheckProperty(x => x.Id, 1)
.CheckList(x => x.Contacts, this.tmpList)
.VerifyTheMappings();
}
此测试导致此帖子顶部出现错误。
提前感谢您的帮助。如果需要,我还可以提供更多细节。