[ROOT] Class derived from TFile, GetSize() problem

From: Conrad Steenberg (conrad@hep.caltech.edu)
Date: Tue May 07 2002 - 04:03:55 MEST 

Hi

I have a class, similar to TWebFile, that derives from TFile. I can get
it to read the file from a remote source, but it seems like the
TFilee::GetSize() method gets called, instead of my derived GetSize()
method. The class definition looks like this:

class  TCWebFile: public Clarens, public TFile
{
private:
// Some stuff

public:
//...
Seek_t  GetSize() const;
};

and in the implementation:

Seek_t TCWebFile::GetSize() const
{
   // Return maximum file size to by-pass truncation checking.
   cout<<"GetSize()"<<endl;
   return kMaxInt;
}

When I create my TCWebFile object, I get

Error in <TCWebFile::GetSize>: cannot stat the file <...> 
Error in <TCWebFile::TFile>: cannot stat the file <...> 

which looks suspiciously like the output from TFile.cxx:730, where
TFile::GetSize() is defined.

Any ideas?

Cheers!

Conrad


-- 
*-----------------------------------------*
| Conrad Steenberg                        |
| Caltech, Mail Code 356-48               |
| Pasadena, CA, 91125                     |
| e-mail: conrad@hep.caltech.edu          |
| Tel: (626) 395-8758                     |
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