 |
ATLAS Offline Software
|
|
ATLAS Offline Software
|
StoreGate is a toolkit to implement the Atlas Data Model. It consists of four packages StoreGate(this one), DataModel, SGComps, and SGTools.
This package contains the client API to the Transient Data Store. The core data access API is provided by StoreGateSvc. StoreGateSvc manages the Data Objects in transient form in collaboration with DataStore (SGTools pkg). The transient/persistent conversion of each data object type is managed by a DataProxy (again in SGTools). The DataProxy instances for object on disk are added by a list of IAddressProvider services managed by the ProxyProviderSvc (in SGComps).
ActiveStoreSvc is not for general use: it allows to access the instance of StoreGateSvc which is currently active (this is used by classes dealing with multiple event stores, e.g. for pile-up studies).
The package Control/AthenaExamples/AthExStoreGateExamples contains running examples of algorithms accessing Data Objects using StoreGateSvc. This examples are (very close to) the ones described in the tutorial above
The directory test contains several test programs that can be run issuing a "gmake check". StoreGateSvcClient_test.cxx should cover most of the high-level client API.
The user guide is part of the Data Model User Guide which is maintained in CVS (http://atlas-sw.cern.ch/cgi-bin/viewcvs-atlas.cgi/offline/AtlasDoc/doc/DataModel/DataModel.pdf?rev=1.3).
More information is available from the Athena wiki (https://twiki.cern.ch/twiki/bin/view/Atlas/AthenaFramework#StoreGate_The_Data_Model_Archite)
The code can be browsed using LXR (http://alxr.usatlas.bnl.gov/lxr/source/atlas/Control/StoreGate/)
1.8.18