TFDMoniFlatFileClientLink不定期地不跟踪到文件 [英] TFDMoniFlatFileClientLink irregularly does not trace to file

问题描述

我在表单上有一个TFDMoniFlatFileClientLink，文件名设置为d:\temp\monitor.txt，tracing = true，TFDConnection.Params.MonitorBy=mbFlatFile.这有时可行，有时却无法跟踪任何内容.没有文件被创建.

I have a TFDMoniFlatFileClientLink on a form, filename set to d:\temp\monitor.txt, tracing=true, TFDConnection.Params.MonitorBy=mbFlatFile. This sometimes works and sometimes does not trace anything. No file gets created.

在Win7 32位应用程序中经过测试，设计时间为TFDConnection到FireBird或Oracle.德尔福东京10.2.1

Tested with Win7 32-bit app, with design time TFDConnection to either FireBird or Oracle. Delphi Tokyo 10.2.1

这是怎么回事?

推荐答案

这是一个非常奇怪的错误:

This was a really weird bug:

事实证明，TFDMoniFlatFileClientLink在删除并放回原位时会记住文件名，然后不会跟踪.

It turns out that the TFDMoniFlatFileClientLink remembers the filename when removed and placed back, then does not trace.

要复制:

删除TFDMoniFlatFileClientLink，可以选择保存项目，再次在窗体上放置TFDMoniFlatFileClientLink，设置tracing = true.它已经神奇地记住了文件名d:\temp\monitor.txt(在哪里?)，然后要么不跟踪，要么跟踪到C:\Users\username\AppData\Local\Temp\traceX.txt.

Remove the TFDMoniFlatFileClientLink, optionally save the project, place a TFDMoniFlatFileClientLink on the form again, set tracing=true. It has magically remembered filename d:\temp\monitor.txt (where?), then either does not trace or traces to C:\Users\username\AppData\Local\Temp\traceX.txt.

仅当您更改文件名时，它才能再次成功跟踪. ^*

TFDMoniRemoteFileClientLink发生类似的奇怪事件，但通常不会为FDMonitor生成跟踪输出.我尚未调查发生这种情况的确切条件.

Similar weird things happen with TFDMoniRemoteFileClientLink, it very often does not create trace output for FDMonitor to pick up. I have not investigated the exact conditions under which this happens.

在跟踪可能与以下问题有关的以下问题后，我在测试应用程序中发现了此问题: ^**

I found this in a test app after tracing the following issue, possibly related:^**

设计时TFDConnection在运行时填充其参数.我执行了TFDConnection.Params.Add('MonitorBy=mbFlatFile')，但该应用程序未跟踪.我在运行时验证了MonitorByInitial=true. Params.Add('MonitorBy=mbRemote')也失败了.
在设计时将TFDMoniFlatFileClientLink和TFDMoniRemoteClientLink放置在数据模块上.

A design time TFDConnection gets its parameters filled at run-time. I executed TFDConnection.Params.Add('MonitorBy=mbFlatFile') but the app did not trace. I verified that MonitorByInitial=true at run-time. Params.Add('MonitorBy=mbRemote') also failed.
A TFDMoniFlatFileClientLink and TFDMoniRemoteClientLink were placed on the datamodule at design time.

在Embarcadero质量门户网站中的报告为 RSP-19554

Reported in Embarcadero Quality Portal under issue RSP-19554

^{*即使将其更改为相同的文件名.如果在运行时执行此操作，则必须在FileName分配周围设置Tracing=false/true.}

^{**毫米，不相关.报告为 RSP-19559}

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