Bug ID: JDK-8026262 NPE in SystemFlavorMap.getAllNativesForType - regression in jdk8 b110 by fix of #JDK-8024987

JDK-8026262 : NPE in SystemFlavorMap.getAllNativesForType - regression in jdk8 b110 by fix of #JDK-8024987

Type: Bug
Component: client-libs
Sub-Component: java.awt
Affected Version: 8

Priority: P1
Status: Closed
Resolution: Fixed

Submitted: 2013-10-10
Updated: 2013-11-13
Resolved: 2013-10-11

Versions (Unresolved/Resolved/Fixed)

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JDK 8
8 b115Fixed

Related Reports

Duplicate :	JDK-8026958 - Swing DnD does not work on Linux
Duplicate :	JDK-8027160 - REGRESSION: test javax/swing/dnd/7171812/bug7171812.java fails since JDK 8 b110
Duplicate :	JDK-8027988 - closed/java/awt/datatransfer/SystemFlavorMap/GetNativesForFlavorTest fails
Duplicate :	JDK-8027985 - closed/java/awt/datatransfer/CRLFTest/CRLFTest fails
Duplicate :	JDK-8027831 - REGRESSION: The test failed automatically and thrown java.lang.NullPointerException.
Relates :	JDK-8024987 - Copy/paste regression since JDK8 b86

Description

Regression in JDK 8 b110 caused by the fix of issue #JDK-8024987

NPE:

java.lang.NullPointerException
   at java.awt.datatransfer.SystemFlavorMap.getAllNativesForType(SystemFlavorMap.java:1327)
   at java.awt.datatransfer.SystemFlavorMap.getNativesForFlavor(SystemFlavorMap.java:702)
   at sun.awt.datatransfer.DataTransferer.getFlavorsForFormats(DataTransferer.java:851)
   at sun.awt.dnd.SunDropTargetContextPeer.isDataFlavorSupported(SunDropTargetContextPeer.java:211)
   at sun.awt.datatransfer.TransferableProxy.isDataFlavorSupported(TransferableProxy.java:68)
   at java.awt.dnd.DropTargetContext$TransferableProxy.isDataFlavorSupported(DropTargetContext.java:355)
   at ...

Related NetBeans bug for reference:
https://netbeans.org/bugzilla/show_bug.cgi?id=236827

Comments

Verified by functional test. Ubuntu 12.04, b115

13-11-2013

There's an existing JCK test which is failing because of this issue. See JDK-8026322

11-10-2013

This fix is on the review. The cause is a forgotten null check in the JDK-8024987 fix. When we try to find all known natives for a type the flavour cache could not contain some dataflavours yet, so we are getting a null as a list of corresponding mime-types. It's a valid situation, so a simple null check fixes the problem. The fix was tested with the case described in a netbeans bug: without the fix I fail to DnD a file from Krusader file manager, with a fix I can drag it successfully.

11-10-2013