Hi Christian, On Tue, 1 Jan 2002, cstrato@EUnet.at wrote: > Dear Rooters, Happy New Year! > > I have the following questions: > > 1, When I delete TFolder, are then the objects in TFolder also deleted? > Although TFolder can set “SetOwner()”, looking at the source code I do > not find any use of the variable “fIsOwner”. Is this feature currently > not implemented? (root version 3.02.06) TFolder::SetOwner was inactive. Now implemented in the development version. I have added the following comments in the class description: // When a folder is deleted, its reference from the parent folder and // possible other folders is deleted. // // If a folder has been declared the owner of its objects/folders via // TFolder::SetOwner, then the contained objects are deleted when the // folder is deleted. By default, a folder does not own its contained objects. // NOTE that folder ownership can be set // - via TFolder::SetOwner // - or via TCollection::SetOwner on the collection specified to TFolder::AddFolder > > 2, It is not quite clear to me when to use “Remove()” and when to use > “RecursiveRemove()”? Do not use RecursiveRemove yourself. This function is automatically called by the TObject destructor to clean all containers that may reference the deleted object. > > 3, When TFolder and its objects are permanently stored in TFile, can > I apply the same methods Recursive/Remove to delete the objects from > TFile? No. TFolder has no connection with TFile. It is only a containers for objects in memory. From a TFolder, however, it is possible to create a TTree automatically. Rene Brun > > Thank you an advance > > Best regards > Christian > ---------------------------------- > C.h.r.i.s.t.i.a.n S.t.r.a.t.o.w.a > V.i.e.n.n.a, A.u.s.t.r.i.a >
This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:50:37 MET