when editting data, I noticed first, that I was unable to set the column to NULL via the Keyboard Shortcut (STRG+0). This was a INT-Column on mysql, with default NULL. The Cell-Editor was opened and a warning was generated and the value was not set to null.
See the attached patch, which does what I would expected an circumvents the editor problem. I don't see a real reason for initializing the Cell-Editor (it should be the modells responsibility to invoke a view-update), at at least my initial test were ok.
Created attachment 105271 [details]
Remove the editor component from the NULL/Default set paths
Created attachment 105282 [details]
Corrected patch (previous diff was done in wrong order)
Thanks for your patch, I'll review and test it and let you know.
Added to list  of community contributed bug fixes. Thanks for your patch Matthias!
Thank you for patch, has been applied in core-main/rev/aa46871834d9
Integrated into 'main-golden', will be available in build *201102020000* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Jiri Rechtacek <firstname.lastname@example.org>
Log: #194617: Setting Value of Cell to NULL or DEFAULT fails;
applied matthias42's patch