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FileOutputStreamProvider - Error Written to Log [message #1692908]

Mon, 20 April 2015 14:09

Arye Shemesh

Messages: 37
Registered: November 2012

Member

Hi Dirk,

First, thanks for the great work on this project.

When I try to export a table to a problematic location (e.g. a folder for which I don't have permissions to write to), the export aborts and an exception is logged. This behavior is in the FileOutputStreamProvider class, which swallows the exception and doesn't propagate it.

I'd like to change the behavior so the user will get a popup error dialog and no exception will be logged, as from the user point of view it is not understood what is going on.

I can, of course, override the default FileOutputStreamProvider with my own implementation, but i think the default behavior could be improved to just throw the original exception or to extract the exception handling to a separate overridable method.

What do you think?

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Re: FileOutputStreamProvider - Error Written to Log [message #1692947 is a reply to message #1692908]

Mon, 20 April 2015 18:45

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

I'm against throwing the exception, since that would mean everybody would need to handle the exception, otherwise the NatTable instance breaks the application.
I also don't like the idea of introducing a method you need to override. That still means people need to create custom implementations.

But I can see the use case. IMHO it would be better to introduce some ErrorHandler interface you can register with the FileOutputStreamProvider. And there could be default implementations for simply logging or opening dialogs. We did something similar for editing with the IEditErrorHandler strategies. Such an approach would give users an easy way to customize error handling and it could be used at several places.

Feel free to create an enhancement ticket and contribute a solution via Gerrit.

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Re: FileOutputStreamProvider - Error Written to Log [message #1742721 is a reply to message #1692947]

Tue, 06 September 2016 21:24

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

I provided a patch for this via https://bugs.eclipse.org/bugs/show_bug.cgi?id=471489

My tests succeed, but a verification would be nice.

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