<AWT Dev> [9] Review Request: 8047336 Read flavormap.properties as resource

Alan Bateman Alan.Bateman at oracle.com
Thu Jun 19 12:13:14 UTC 2014

On 19/06/2014 12:17, Petr Pchelko wrote:
> Hello,
> Please review the fix for the issue:
> https://bugs.openjdk.java.net/browse/JDK-8047336
> The fix is available at:
> http://cr.openjdk.java.net/~pchelko/9/8047336/webrev.00/
> This is another step in datatransfer modularization work. This part of the work needs a CCC, so I've moved it out to a separate fix. The CCC will be filed once the fix is settled.
> Multiple changes are happening here:
> 1. After http://ccc.us.oracle.com/8005250 the flavormap.properties and AWT.DnD.flavorMapFileURL Toolkit property was removed from the public API. However one mention was forgotten and I'm removing it now, see changes in Toolkit.java
> 2. For modules we need to move flavormap.properties out of the jre/lib. I'm not sure about the new location. Can I add properties to the java.awt.datatransfer package? Wouldn't they be considered public in this case?
> 3. The AWT.DnD.flavorMapFileURL Toolkit property cannot be set by the user and it's not used by us. So I'm removing it.
> 4. As flavormap.properties is not editable by the user any more, I'm changing it's format to get significant simplification of the parsing code.
> There's no way left to change the default mappings now, but we have public supported API to create new mappings in the Java code. System property could be added to provide alternative properties location, but I don't think it's required.
The dropping of the reference to flavormap.properties from 
java.awt.Toolkit looks okay to me.

I skimmed through the changes to java.awt.datatransfer.SystemFlavorMap 
(not a detailed review) and it looks okay. I cannot comment on the 
changes to format as I don't know the history in this area to understand 
the issues around duplicates.

On your question about introducing a system property to allow the 
configuration be picked up from some other (non-JDK) location then it 
doesn't sound like there is a strong case. Do we know if anyone has been 
editing the file in ${java.home}/lib? I assume that if there is a strong 
need then it could be possible to introducing it in the future without 
conflicting with anything that you are doing here.

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