如果以前违反了唯一约束，NHibernate会停止

Question

我有一个NHibernate的小问题，我找不出原因。每当我调试或者剖析应用程序时，我意外地违反了一个唯一的约束，NHibernate就不会再运行多重查询了（我将把异常堆栈跟踪留到最后）。流程就是这样。一切工作正常，然后：

违反UNIQUE KEY约束 'UQ__workday__572F4CF4753864A1'。 无法在对象 'dbo.workday'中插入重复密钥。该声明已被终止 。

描述：在执行 当前Web请求期间发生未处理的异常 。请查看 堆栈跟踪以了解有关 错误的更多信息，以及它源自 的代码。

异常详细信息： System.Data.SqlClient.SqlException：违反 UNIQUE KEY约束 'UQ__workday__572F4CF4753864A1' 的。 无法在对象 'dbo.workday'中插入重复密钥。该声明已被终止，终止了 。

如果我现在尝试运行执行查询相同的代码：

var query1 = QueryOver.Of<Invoice>() 
    .Fetch(x => x.Company).Eager 
    .Fetch(x => x.Workdays).Eager 
    .Where(x => x.Id == invoiceId); 

var query2 = QueryOver.Of<Invoice>() 
    .Fetch(x => x.Company).Eager 
    .Fetch(x => x.Products).Eager 
    .Where(x => x.Id == invoiceId); 

var result = Session.CreateMultiCriteria() 
    .Add(query1) 
    .Add(query2) 
    .List(); 

var invoice = ((IList) result[0])[0] as Invoice; 

if (invoice != null) { 
    invoice.CalculateTotals(); 
} 

return invoice; 

该代码生成下面的语句

SELECT this_.invoice_id   as invoice1_10_2_, 
     this_.invoice_number  as invoice2_10_2_, 
     this_.invoice_prefix  as invoice3_10_2_, 
     this_.start_date   as start4_10_2_, 
     this_.end_date   as end5_10_2_, 
     this_.period    as period10_2_, 
     this_.km     as km10_2_, 
     this_.km_price   as km8_10_2_, 
     this_.hour_price   as hour9_10_2_, 
     this_.gst    as gst10_2_, 
     this_.customer_id  as customer11_10_2_, 
     this_.printed   as printed10_2_, 
     this_.created_at   as created13_10_2_, 
     this_.created_by   as created14_10_2_, 
     this_.updated_at   as updated15_10_2_, 
     this_.updated_by   as updated16_10_2_, 
     this_.deleted_at   as deleted17_10_2_, 
     this_.deleted_by   as deleted18_10_2_, 
     this_.company_id   as company19_10_2_, 
     workdays2_.invoice_id as invoice10_4_, 
     workdays2_.workday_id as workday1_4_, 
     workdays2_.workday_id as workday1_15_0_, 
     workdays2_.created_at as created2_15_0_, 
     workdays2_.created_by as created3_15_0_, 
     workdays2_.updated_at as updated4_15_0_, 
     workdays2_.updated_by as updated5_15_0_, 
     workdays2_.quantity  as quantity15_0_, 
     workdays2_.unit_price as unit7_15_0_, 
     workdays2_.day   as day15_0_, 
     workdays2_.description as descript9_15_0_, 
     workdays2_.invoice_id as invoice10_15_0_, 
     company3_.company_id  as company1_12_1_, 
     company3_.created_at  as created2_12_1_, 
     company3_.created_by  as created3_12_1_, 
     company3_.updated_at  as updated4_12_1_, 
     company3_.updated_by  as updated5_12_1_, 
     company3_.name   as name12_1_, 
     company3_.bankgiro_nr as bankgiro7_12_1_, 
     company3_.invoice_prefix as invoice8_12_1_, 
     company3_.moms_reg_nr as moms9_12_1_, 
     company3_.plus_giro_nr as plus10_12_1_, 
     company3_.contact_person as contact11_12_1_, 
     company3_.email   as email12_1_, 
     company3_.mobile   as mobile12_1_, 
     company3_.phone   as phone12_1_, 
     company3_.fax   as fax12_1_ 
FROM [invoice] this_ 
     left outer join [workday] workdays2_ 
     on this_.invoice_id = workdays2_.invoice_id 
     left outer join [company] company3_ 
     on this_.company_id = company3_.company_id 
WHERE this_.invoice_id = 351 /* @p0 */ 
SELECT this_.invoice_id   as invoice1_10_2_, 
     this_.invoice_number  as invoice2_10_2_, 
     this_.invoice_prefix  as invoice3_10_2_, 
     this_.start_date   as start4_10_2_, 
     this_.end_date   as end5_10_2_, 
     this_.period    as period10_2_, 
     this_.km     as km10_2_, 
     this_.km_price   as km8_10_2_, 
     this_.hour_price   as hour9_10_2_, 
     this_.gst    as gst10_2_, 
     this_.customer_id  as customer11_10_2_, 
     this_.printed   as printed10_2_, 
     this_.created_at   as created13_10_2_, 
     this_.created_by   as created14_10_2_, 
     this_.updated_at   as updated15_10_2_, 
     this_.updated_by   as updated16_10_2_, 
     this_.deleted_at   as deleted17_10_2_, 
     this_.deleted_by   as deleted18_10_2_, 
     this_.company_id   as company19_10_2_, 
     products2_.invoice_id as invoice10_4_, 
     products2_.product_id as product1_4_, 
     products2_.product_id as product1_13_0_, 
     products2_.created_at as created2_13_0_, 
     products2_.created_by as created3_13_0_, 
     products2_.updated_at as updated4_13_0_, 
     products2_.updated_by as updated5_13_0_, 
     products2_.quantity  as quantity13_0_, 
     products2_.profit_rate as profit7_13_0_, 
     products2_.unit_price as unit8_13_0_, 
     products2_.description as descript9_13_0_, 
     products2_.invoice_id as invoice10_13_0_, 
     company3_.company_id  as company1_12_1_, 
     company3_.created_at  as created2_12_1_, 
     company3_.created_by  as created3_12_1_, 
     company3_.updated_at  as updated4_12_1_, 
     company3_.updated_by  as updated5_12_1_, 
     company3_.name   as name12_1_, 
     company3_.bankgiro_nr as bankgiro7_12_1_, 
     company3_.invoice_prefix as invoice8_12_1_, 
     company3_.moms_reg_nr as moms9_12_1_, 
     company3_.plus_giro_nr as plus10_12_1_, 
     company3_.contact_person as contact11_12_1_, 
     company3_.email   as email12_1_, 
     company3_.mobile   as mobile12_1_, 
     company3_.phone   as phone12_1_, 
     company3_.fax   as fax12_1_ 
FROM [invoice] this_ 
     left outer join [product] products2_ 
     on this_.invoice_id = products2_.invoice_id 
     left outer join [company] company3_ 
     on this_.company_id = company3_.company_id 
WHERE this_.invoice_id = 351 /* @p1 */ 

我得到以下很无奈例外。实际上，从现在开始，每个查询都是超时，并且在我可以执行任何操作之前，应用程序需要重新启动。有时它甚至无法帮助重新启动它。

有人知道这是怎么回事吗？

在 System.Data.SqlClient.SqlConnection.OnError（SQLEXCEPTION 例外，布尔breakConnection）
在 System.Data.SqlClient.SqlInternalConnection.OnError（SQLEXCEPTION 例外，布尔breakConnection）
在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning（） 在 System.Data.SqlClient.TdsParser.Run（runBehavior runBehavior，SqlCommand的cmdHandler， SqlDataReader的数据流， 散装CopySimpleResultSet bulkCopyHandler，TdsParserStateObject stateObj）在 System.Data.SqlClient.SqlDataReader.ConsumeMetaData（） 在 System.Data.SqlClient.SqlDataReader.get_MetaData（） 在 System.Data.SqlClient.SqlCommand.FinishExecuteReader（SqlDataReader的 DS，runBehavior runBehavior，字符串 resetOptionsString）在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds（的CommandBehavior cmdBehavior，runBehavior runBehavior， 布尔returnStream，布尔异步）
在 System.Data.SqlClient.SqlCommand。RunExecuteReader（的CommandBehavior cmdBehavior，RunBehavior runBehavior， 布尔returnStream，字符串方法， DbAsyncResult结果）在 System.Data.SqlClient.SqlCommand.RunExecuteReader（的CommandBehavior cmdBehavior，RunBehavior runBehavior， 布尔returnStream，字符串方法）
在 System.Data.SqlClient.SqlCommand.ExecuteReader（的CommandBehavior 行为，字符串方法）在 System.Data.SqlClient.SqlCommand.ExecuteDbDataReader（的CommandBehavior 行为）在 System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader （） at NH ibernate.AdoNet.AbstractBatcher.ExecuteReader（IDbCommand的 CMD）在 d：\ CSHARP \ NH \的nhibernate \ SRC \ NHibernate的\ ADONET \ AbstractBatcher.cs：线 NHibernate.Impl.MultiCriteriaImpl.GetResultsFromDatabase（IList的 结果）在 d：\ CSHARP \ NH \的nhibernate \ SRC \ NHibernate的\默认地将Impl \ MultiCriteriaImpl.cs：线 209在 NHibernate.Impl.MultiCriteriaImpl.DoList（） 在 d：\ CSHARP \ NH \的nhibernate \ SRC \ NHibernate的\默认地将Impl \ MultiCriteriaImpl.cs：线 NHibernate.Impl.MultiCriteriaImpl.ListIgnoreQueryCache（） 在 d：\ CSHARP \ NH \的nhibernate \ SRC \ NHibernate的\默认地将Impl \ MultiCriteriaImpl.cs：线 NHibernate.Impl.MultiCriteriaImpl.List（） 在 d：\ CSHARP \ NH \的nhibernate \ SRC \ NHibernate的\默认地将Impl \ MultiCriteriaImpl.cs：线 FakturaLight.Repositories.InvoiceRepository.GetSingle（的Int32 invoiceId）在 d：\ Projekt的\ faktura_light \ SRC \ FakturaLight \库\ InvoiceRepository.cs：线 FakturaLight.WebClient.Controllers.InvoiceController.PrepareEditInvoiceModel（EditInvoiceModel oldModel，的Int32 ID）在 d：\ Projekt的\ faktura_light \ src \ FakturaLight.WebClient \ Controllers \ InvoiceController.cs：行 116 at FakturaLight.WebClient.Controllers.InvoiceController.E DIT（的Int32 ID）在 d：\ Projekt的\ faktura_light \ SRC \ FakturaLight.WebClient \控制器\ InvoiceController.cs：在lambda_method线 82（封闭， ControllerBase，对象[]）在 System.Web.Mvc。 ActionMethodDispatcher.Execute在 System.Web.Mvc.ReflectedActionDescriptor.Execute（ControllerBase 控制器，对象[]参数）（controllerContext controllerContext，IDictionary的参数）在 System.Web.Mvc.ControllerActionInvoker。 <> c__DisplayClassd.b__a（） 在 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter（IActionFilter 滤波器，ActionExecutingContext preContext，函数功能1 continuation)preContext, Func 1续）1.terminated。

Answer 1

这是设计。只需创建另一个会话。

如果Session抛出异常， 交易必须回滚 和会话丢弃。

（请记住，你的会议应晚开早闭）