Dear All, 

I'm pretty sure many know this already, however I found this feature by a an accident 
and want to share with those who don't know about it yet - seems very useful. 

- it looks that one can use ROOT scripting with rootcling and call from the 
  interactive ROOT prompt any function defined in midas.h and access ODB seemingly 
  WITHOUT DOING anything special 

- more surprisingly, that also works for odbxx, with one minor exception in handling 
  the 64-bit types - the proof is in attachment. The script test_odbxx.C loaded 
  interactively is Stefan's

 https://bitbucket.org/tmidas/midas/src/develop/examples/odbxx/odbxx_test.cxx 

with one minor change - the line 
 
   o[Int64 Key] = -1LL;

is replaced with

   int64_t x = -1LL;
   o["Int64 Key"] = x;

- apparently the interpeter has its limitations. 

My rootlogon.C file doesn't load any libraries, it only defines the appropriate 
include paths. So it seems that everything works pretty much out of the box. 

One issue has surfaced however. All that worked despite my experiment 
had its name="test_025", while the example specifies experiment="test". 
Is it possible that that only first 4 characters are being tested ? 

-- regards, Pasha