B4J Question File write problem

[Drago Bratko]

On some systems (computers), user in which context app is running, don’t have right to write (or modify) a file on filesystem.

To write a file, I use “File.WriteMap”. Is there a way to get some kind of timeout when I try to write (or to check if I have right to write a file before writing). If I don’t do any check, app in such case just get freeze.

 

[Erel]

If there is no permission then it should immediately throw an error. Are you sure that it is a permission problem?

 

[Drago Bratko]

Thanks for your fast reply.
Yes, it's permission problem as it happeneds on windows system with restricted domain security policy.
It's production system so I can't debug it ... but it looks to mee that it hangs on the line when I try to write to a file as nothing else is executed.

 

[Erel]

Note that you can run it from the command line to see the logs. Maybe it throws an error and breaks your program flow:

java -jar <yourjar>

 

[Drago Bratko]

Good tip ... I will do it like that and check logs. Thank you.

 

[Drago Bratko]

Just to make this thread useful ... it was file permission issue :
java.lang.RuntimeException: java.io.FileNotFoundException: C:\Program Files (x86)\RedomatKeyboard\settings.txt (Access is denied)

I didn't found a way to bypass it (of course, it was assumed that I can't do it), but with Try/Catch at least I can now give a message to user and continue to run app.
Thanks Erel.

 

[Erel]

I didn't found a way to bypass it

You should use File.DirData instead of File.DirApp.

 

[Drago Bratko]

Yes, you are correct ... I will do it like that.
Thank you.