Upgrade DES to read/write handles (!22619) · Merge requests · atlas / athena

Upgrade to read/write handles and some rewriting of the code to get ready for sub-classing the DES with the standard ES.

The upgrade to read/write handles is done in the same way as in !22369 (merged).

Relevant for ATEAM-510.

This MR also removes the functionality related to the EventStreamingTool since there are no clients using it and it simplifies the code greatly.

Edited Apr 17, 2019 by Miha Muskinja

Upgrade DES to read/write handles