【发布时间】：2011-06-30 07:55:30
【问题描述】：
我在这里遇到了一些奇怪的问题，我无法调试。这个应用程序以前运行良好，但自从更改了休眠配置/sessoin 管理后，我以某种方式破坏了它，并且无法在哪里锻炼。
网页及其回帖似乎都可以正常工作，更改已保存到数据库中，什么都没有。事务/会话由我制作的 HTTPModule 处理：
public class NHibernateSessionModule: IHttpModule
{
private INHibernateRequest _nhibRequest;
public void Init(HttpApplication context)
{
context.BeginRequest += new EventHandler(BeginTransaction);
context.EndRequest += new EventHandler(CommitAndCloseSession);
Console.WriteLine("Init Nhibernate module");
}
/// <summary>
/// Opens a session within a transaction at the beginning of the HTTP request.
/// This doesn't actually open a connection to the database until needed.
/// </summary>
private void BeginTransaction(object sender, EventArgs e)
{
_nhibRequest = new NHibernateRequest(NHibernateSessionManager.Instance);
_nhibRequest.Start();
}
/// <summary>
/// Commits and closes
/// </summary>
private void CommitAndCloseSession(object sender, EventArgs e)
{
_nhibRequest.Commit();
}
public void Dispose() { }
}
这个 INhibernateRequest 是我的一个自定义 DLl，它所做的只是：
public class NHibernateRequest : INHibernateRequest
{
private ITransaction _currentTransaction;
private SessionFunctions _sessionFunctions;
public NHibernateRequest(SessionFunctions sessionFunctions)
{
_sessionFunctions = sessionFunctions;
}
/// <summary>
/// Starts a session and transaction
/// </summary>
public void Start()
{
_sessionFunctions.OpenSession();
_currentTransaction = _sessionFunctions.CurrentSession.Transaction;
_currentTransaction.Begin();
}
/// <summary>
/// Closes a session and transaction
/// </summary>
public void Commit()
{
try
{
if (_currentTransaction.IsActive)
{
_currentTransaction.Commit();
}
}
finally
{
_sessionFunctions.CloseSession();
}
}
}
基本会话管理。这一切似乎都适用于 .aspx 文件（Web 表单）。但是我有一个被调用的网络服务，它创建了一个新实体。我的领域模型专注于“表单”和“问题”，这个 Web 服务创建了一个带有一些问题的新表单。
我想也许这个 Web 服务没有触发处理程序，所以我手动输入了会话内容（是的，这有点狡猾，但它只是暂时的测试）
[WebMethod]
public bool CreateFormForProject(string jobNumber)
{
INHibernateRequest _nhibRequest = new NHibernateRequest(NHibernateSessionManager.Instance);
_nhibRequest.Start();
try
{
ServiceLayer.FormsService.CreatePmqccFormForJob(jobNumber);
_nhibRequest.Commit();
return true;
} catch
{
_nhibRequest.Commit();
return false;
}
}
Web 服务始终返回 true，因此不会引发异常。
然后我尝试在网页上制作一个按钮，该按钮进行此调用然后显示结果。这似乎创建了它，因为它显示了结果，但是当我刷新页面时，实体不再存在，并且它从未在数据库中，所以我猜它一定只是为该请求缓存了它。
所以我打开了 SQL 输出，并配置 log4net 将其吐出到调试输出窗口。这就是发生的事情：
NHibernate.SQL: 17:45:59,466 DEBUG SQL:0 - SELECT project0_.ProjectNo as ProjectNo0_0_, project0_.Name1 as Name2_0_0_, project0_.Name2 as Name3_0_0_, project0_.Project_State as Project4_0_0_, project0_.ProjectLeader as ProjectL5_0_0_, project0_1_.AdminArchived as AdminArc2_2_0_ FROM infobase.dbo.Projects project0_ left outer join infobase.dbo.Project_Archiving project0_1_ on project0_.ProjectNo=project0_1_.ProjectNo WHERE project0_.ProjectNo=@p0;@p0 = '11904' [Type: String (4000)]
NHibernate.SQL: 17:45:59,692 DEBUG SQL:0 - UPDATE infobase.dbo.Projects SET Name1 = @p0, Name2 = @p1, Project_State = @p2, ProjectLeader = @p3 WHERE ProjectNo = @p4;@p0 = 'REVIT TO ACAD PREPARE AND EXPORT TOOL' [Type: String (4000)], @p1 = 'BIM SOLUTIONS API ADDIN' [Type: String (4000)], @p2 = Active [Type: Int32 (0)], @p3 = 187 [Type: Int32 (0)], @p4 = '11904' [Type: String (4000)]
NHibernate.SQL: 17:46:02,652 DEBUG SQL:0 - INSERT INTO Forms (LastSaved, Note, Complete, MeetingId, SuggestedDeferralMonth, NextReviewDate, LastReviewDate, SuggestedProjectState, SuggestedProjectLeader, ProjectId) VALUES (@p0, @p1, @p2, @p3, @p4, @p5, @p6, @p7, @p8, @p9); select SCOPE_IDENTITY();@p0 = 30/06/2011 5:46:02 PM [Type: DateTime (0)], @p1 = NULL [Type: String (4000)], @p2 = False [Type: Boolean (0)], @p3 = 0 [Type: Int32 (0)], @p4 = NULL [Type: Int32 (0)], @p5 = 30/06/2011 5:45:59 PM [Type: DateTime (0)], @p6 = NULL [Type: DateTime (0)], @p7 = NULL [Type: Int32 (0)], @p8 = NULL [Type: Int32 (0)], @p9 = '11904' [Type: String (4000)]
NHibernate.SQL: 17:46:02,735 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.PiAlertQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:02,826 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.ClientHappyQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:02,928 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.ReworkQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,028 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.ScopeOfWorksQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,130 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.TeamMeetingQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,227 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.DeadlinesQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,347 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, QuestionType) VALUES (@p0, @p1, 'PmqccDomain.DomainObjects.JobVelocityQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,433 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InvoiceAmount, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, @p3, 'PmqccDomain.DomainObjects.InvoiceAmountQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = NULL [Type: Double (0)], @p3 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,534 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.InvoiceForecastQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = Unanswered [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,630 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.ContactedClientQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = NotRequired [Type: Int32 (0)]
NHibernate.SQL: 17:46:03,734 DEBUG SQL:0 - INSERT INTO Questions (Explanation, PmqccFormId, InputtedAnswer, QuestionType) VALUES (@p0, @p1, @p2, 'PmqccDomain.DomainObjects.AsConsQuestion'); select SCOPE_IDENTITY();@p0 = NULL [Type: String (4000)], @p1 = 8141 [Type: Int32 (0)], @p2 = NotRequired [Type: Int32 (0)]
这正是预期的结果，但数据库没有改变！！！ SQL必须回滚或其他东西。我尝试在 _nhibRequest.Commit() 调用后设置断点，它表示事务已提交。
所以现在我很困惑，我该如何调试呢？或者任何人都可以看到我在这里做错了一些基本的事情吗？
编辑： 这是我发出 Web 服务请求时完整 log4net 调试输出的粘贴。 http://pastebin.com/mEYWiCsF
【问题讨论】：
-
我的 NHibernate 知识有限，但是当身份列未在 ORM 定义或数据库表本身中正确设置/取消清除时，我看到了与 LINQ-to-SQL 类似的行为。 - 在您的 hbm 文件中，检查是否为您的问题表正确定义了 Identity 列？
-
您说您做了一些更改，似乎“破坏”了您的代码。你能具体说明它们是什么吗？更好的是 - 您是否可以（暂时）回滚它们以查看其中哪些实际上破坏了您的应用程序？
-
我基本上将我所有的 NHIbernate 特定代码重构为一个单独的 DLL，并从 hbm xml 文件转换为 Fluent 映射/配置。这通过了我们所有的测试，除了我们使用 Web 服务时。我做了更多的故障排除，似乎当我做与服务相同的事情时，在 aspx 页面加载时，它工作正常。我认为这可能与事务/会话上下文有关？但是，该代码并没有改变，并且在 Web 表单页面中一切正常。 .aspx 页面和我缺少的 asmx Web 服务之间有什么区别吗？
-
这是我的日志输出.. 我看不到任何会说“哦，等等，不，我们实际上并没有将它放入数据库”....pastebin.com/mEYWiCsF
标签： c# asp.net nhibernate fluent-nhibernate