[ROOT] deleting, tfiles, and ttrees (Oh my!)

From: Brandon Kohn (blk@maia-institute.org)
Date: Tue Apr 09 2002 - 18:11:22 MEST


Hi Guys,

Got a little question here...

I have an application where I use a TFile as a sort of file system and store various objects as 'files' within.  One of the requirements of this file system is that I'm able to perform a destructive overwrite of a 'file' object in the TFile without wiping out the entire TFile and recreating.  One of these 'file' objects is a class the has a TTree* as a member.  I'm able to delete the object fine, and it dissapears from the TFile when I do so.  However, in cases where I delete the object and then create a new one with the same name (to simulate a destructive overwrite), the size of the TFile is ~ double what it was before (in this case it only has a single 'file' object.. so double that object's size).

So, the question is, what am I doing wrong?

Thanks as always!
Brandon Kohn
+377 97 97 41 51 ext. 306 (Work)
+377 97 77 86 71 (Home)
blk@maia-institute.org
The Maia Institute, Monaco



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