如何从 NHibernate 异常中获取更新 SQL 语句？

Question

我正在处理一些遗留代码，这些代码在将聚合保存到数据库时会中断。 SQL 服务器的错误是著名的“SqlDateTime 溢出”。必须在 1753 年 1 月 1 日之间...等'

我的问题是：是否可以询问 NHibernate 框架执行了什么 SQL 导致了这个异常？这样我将有一个简单的方法来找出我必须找到问题的 POCO。

是否可以将侦听器附加到 NHibernate IDbCommand 或其他东西？

以下此类异常的示例堆栈跟踪：

SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM. StackTrace:    at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc, Boolean sync, TaskCompletionSource`1 completion, Int32 startRpc, Int32 startParam)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
   at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
   at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at System.Data.SqlClient.SqlCommandSet.ExecuteNonQuery()
   at NHibernate.AdoNet.SqlClientBatchingBatcher.DoExecuteBatch(IDbCommand ps)
   at NHibernate.AdoNet.AbstractBatcher.ExecuteBatchWithTiming(IDbCommand ps)
   at NHibernate.AdoNet.AbstractBatcher.ExecuteBatch()
   at NHibernate.AdoNet.AbstractBatcher.PrepareCommand(CommandType type, SqlString sql, SqlType[] parameterTypes)
   at NHibernate.Persister.Entity.AbstractEntityPersister.Update(Object id, Object[] fields, Object[] oldFields, Object rowId, Boolean[] includeProperty, Int32 j, Object oldVersion, Object obj, SqlCommandInfo sql, ISessionImplementor session)
   at NHibernate.Persister.Entity.AbstractEntityPersister.UpdateOrInsert(Object id, Object[] fields, Object[] oldFields, Object rowId, Boolean[] includeProperty, Int32 j, Object oldVersion, Object obj, SqlCommandInfo sql, ISessionImplementor session)
   at NHibernate.Persister.Entity.AbstractEntityPersister.Update(Object id, Object[] fields, Int32[] dirtyFields, Boolean hasDirtyCollection, Object[] oldFields, Object oldVersion, Object obj, Object rowId, ISessionImplementor session)
   at NHibernate.Action.EntityUpdateAction.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 Haddock.Business.Services.CommonRepositoryBase`3.SaveOrUpdate(TRootAggregate rootAggregate) in d:\Builds\4\Haddock\Haddock.Releases.P44-2014.SL\Sources\Business\Haddock.Business.Services\CommonRepositoryBase.cs:line 140
...

我正在考虑向 CommonRepositoryBase 类添加一些额外的检查代码，该类在整个项目中都使用。

代码如下，其实很好理解：

ISession session = GetSession();
        using (ITransaction transaction = session.BeginTransaction())
        {
            try
            {
                session.SaveOrUpdate(rootAggregate);
                transaction.Commit(); // does a flush internally
            }
            catch (Exception)
            {
                transaction.Rollback();
                throw;
            }
        }

所以，我的目标是在该 Catch 块中添加一些代码，以检查正在使用的会话和事务，并使用 NHibernate 想要执行的 SQL 语句扩展该异常。

Answer 1

您可以在 SQL Server Management Studio 中使用 SQL Server Profiler 来跟踪正在数据库上运行的查询。

在复制错误之前启动分析器，您可以从那里看到执行的查询。

除了查询转储之外，您还可以查看有关已执行查询的更多详细信息，例如执行时间等。