Speaker
P. Canal
(FERMILAB)
Description
Since version 3.05/02, the ROOT I/O System has gone through
significant enhancements.
In particular, the STL container I/O has been upgraded to support
splitting, reading without existing libraries and using directly from
TTreeFormula (TTree queries).
This upgrade to the I/O system is such that it can be easily extended
(even by the users) to support the splitting and querying of almost
any collections. The ROOT TTree queries engine has also been enhanced
in many ways including an increase performance, better support for
array printing and histograming, addition of the ability to call any
external C or C++ functions, etc.
We improved the I/O support for classes not inheriting from TObject,
including support for automatic schema evolution without using an
explicit class version. ROOT now support generating files larger than
2Gb. We also added plugins for several of the mass storage servers
(Castor, DCache, Chirp, etc.).
We will describe in details these new features and their implementation.
