У меня есть это отображение
public class CountryMapping : ClassMap<Country>
{
public CountryMapping()
{
Id(x => x.Id).GeneratedBy.GuidComb();
Map(x => x.Name).Not.Nullable().NvarcharWithMaxSize();
HasMany(x => x.Cards).Cascade.Delete().Inverse();
}
}
public class CardMapping : ClassMap<Card>
{
public CardMapping()
{
Id(x => x.Id).GeneratedBy.GuidComb();
Map(x => x.Name).Not.Nullable().NvarcharWithMaxSize(); ;
References(x => x.Country).Not.Nullable();
HasMany(x => x.RewardTiers).Cascade.All();
}
}
Теперь я хочу удалить страну. Если вы удалите страну, все карты должны быть удалены. Следует удалить все награды.
nhibernateRepo.Load<Country>(countryId);
nhibernateRepo.Delete<Country>(country);
unitOfWork.Commit();
Когда я это сделаю. Я получаю следующую ошибку.
NHibernate.Exceptions.GenericADOException was caught
Message=could not delete collection: [Domain.Card.RewardTiers#7abaade7-4653-456f-8840-9fc700fa949b][SQL: UPDATE [RewardTier] SET Card_id = null WHERE Card_id = @p0]
Source=NHibernate
SqlString=UPDATE [RewardTier] SET Card_id = null WHERE Card_id = @p0
StackTrace:
at NHibernate.Persister.Collection.AbstractCollectionPersister.Remove(Object id, ISessionImplementor session)
at NHibernate.Action.CollectionRemoveAction.Execute()
at NHibernate.Engine.ActionQueue.Execute(IExecutable executable)
at NHibernate.Engine.ActionQueue.ExecuteActions(IList list)
at NHibernate.Engine.ActionQueue.ExecuteActions()
at NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource session)
at NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent event)
at NHibernate.Impl.SessionImpl.Flush()
at NHibernate.Transaction.AdoTransaction.Commit()
at CCRecomendator.Framework.Data.UnitOfWork.Commit() in UnitOfWork.cs:line 52
at CCRecomendator.Framework.Services.CountryService.DeleteCountry(Guid countryId) in CountryService.cs:line 157
InnerException: System.Data.SqlClient.SqlException
Message=Cannot insert the value NULL into column 'Card_id', table 'cc.dbo.RewardTier'; column does not allow nulls. UPDATE fails.
The statement has been terminated.
Source=.Net SqlClient Data Provider
ErrorCode=-2146232060
Class=16
LineNumber=1
Number=515
Procedure=""
Server=(local)
State=2
StackTrace:
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at NHibernate.AdoNet.AbstractBatcher.ExecuteNonQuery(IDbCommand cmd)
at NHibernate.Persister.Collection.AbstractCollectionPersister.Remove(Object id, ISessionImplementor session)
InnerException:
Почему он пытается выполнить обновление после удаления?