[equinox-dev] [prov] Gzipped artifacts.xml

[Stefan Liebig <Stefan.Liebig@xxxxxxxxxxxx>]

I have committed a version of SimpleArtifactRepository/Factory that 
works with gzipped artifacts.xml.The compression ratio is about 1/12-1/16.
Reading artifacts.xml first tries the gzipped version 
(artifacts.xml.gzip) and if that fails it will try with the ungzipped 
version (artifacts.xml) as before. Writing currently produces always the 
gzipped version. I think this is not always that what is wanted, e.g. 
when you want to store it locally and it should not be transferred.
Unfortunately the SimpleArtifactRepository.save() method is called 
(almost) from ´inside´ when an artifact has been added to the repository 
and so controlling how it should be saved has to be decided when a 
SimpleArtifactRepository is created (constructor parameter).
The fact that the artifacts.xml is written each time an artifact is 
added is expensive, especially if it is gzipped! Maybe some post 
processing would be better.
To turn off gzipped writing simply change the 
SimpleArtifactRepository.save() method to:
   public void save() {
       save(false);
   }


Stefan


Wish you all a Merry Christmas and a Happy New Year!