- I have a class Track and in the reconstruction phase
several Track objects are created.
- Once I have several Tracks created I want to group
them together into a vertex.
For this I have a class Vertex which has in its
private area an array to store the pointers to
the related Track objects.
i.e. Track** save;
and in the Vertex constructor I do :
save=new Track*[n];
So far this all works fine, but now I want my classes
Track and Vertex to be written onto a ROOT file, and
in making the dict for my classes it turns out that
the Streamers for my classes can't be generated
automatically since the datamember save is an array
of pointers.
Then I got the idea of using TObjArray or TClonesArray
for this, but as far as I can see from the docs,
these facilities can only store objects and not only
pointers to objects.
Since my Track objects are already made, I don't want
to waste any memory and/or cpu time by creating copies
of them. I only need to store the pointers to my already
existing objects and when I would delete my pointer storage
array (save in the above) I don't want my objects (i.e. Tracks)
to be deleted, but only the space reserved for save to be
freed.
Could anyone tell me how to achieve this ?
--Cheers,
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*----------------------------------------------------------------------* Dr. Nick van Eijndhoven Department of Subatomic Physics email : nick@phys.uu.nl Utrecht University / NIKHEF tel. +31-30-2532331 (direct) P.O. Box 80.000 tel. +31-30-2531492 (secr.) NL-3508 TA Utrecht fax. +31-30-2518689 The Netherlands WWW : http://www.phys.uu.nl/~nick Office : Ornstein lab. 172 ---------------------------------------------------------------------- tel. +41-22-7679751 (direct) CERN PPE Division / ALICE exp. tel. +41-22-7675857 (secr.) CH-1211 Geneva 23 fax. +41-22-7679480 Switzerland CERN beep : 13+7294 Office : B 160 1-012 *----------------------------------------------------------------------*