[OpenJDK 2D-Dev] RFR: Fix for 8032693 : javax.print.PrintService does not find any CUPS-Printers on Linux
philip.race at oracle.com
Thu Feb 6 22:31:23 UTC 2014
This is a fix for https://bugs.openjdk.java.net/browse/JDK-8032693
It was introduced by the JDK 8 b115 fix for
The root of the issue is that if you do not have a default printer set
in CUPS then
we get an NPE at line 635 (original file) of UnixPrintServiceLookup.java
the array returned from CUPSPrinter.getDefaultPrinter().
This caused a failure not just locating the default but *any* printer
the NPE went all the way back up to javax.print implementation where it
Really preventing that NPE from happening is all there is to the fix
But for good measure I
1) Catch such an exception inside refreshServices() so we can continue on
2) Fix the usage of device-uri (should be printer-uri-supported)
3) Add lots more debugging to make it easier to get to the bottom of
I'm pretty confident in this fix since I was able to reproduce the problem
by updating CUPS so I had no default and this cures it.
I've added a regression test as best I can. Unless you have printers, but
have also no default printer its going to pass regardless.
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