[news.eclipse.technology.subversive] Building a complete Range Differenc

[jancke.sebastian@xxxxxx (Sebastian Jancke)]

Hello,

i want to build a complete RangeDifference for a single file, stored in 
SVN. I have to extract author, adds/changes/deletes, timestamp and 
revision identifier in order to build a change histogram. 

Thus I am using the Eclipse Team API and retrieve all revisions from the 
IFileHistory:

 revisions = history.getFileRevisions();

Next, I iterate from the back to the front and compare two neighbouring 
revisions (except the first, that's a complete add). The Comparators are 
the LineComparators taken from Eclipse's Compare.Internal.Merge (yah, bad 
practice...). To initialize them, I have to access the contents, thus 
retrieve the storage of a revision:

 comparator = new LineComparator(revision.getStorage(progress));
 //...

 RangeDifference[] differences = RangeDifferencer.findRanges(comparator, 
contributingComparator);


My Problem: The retrieved contents of all revisions is the same (while 
beeing different on svn). Looking into the instances of revision and 
contributor (the one revision before) reveals that the remote object 
inside is the same instance and has HEAD selected.

Am I using the API in a wrong way or is there some bug hidden? I hope you 
can help me. 

Yours,
Sebastian

PS: I cannot depent up on subversive directly.