1. Working with HADES WebDB HADES analysis workshop, Darmstadt, Germany, 31 January - 1 February Ilse Koenig, GSI Darmstadt
Outline:
Version management in Oracle
Generic parameter container
HADES WebDB
Login
Folder structure
Examples

2. Version management in Oracle
1. Parameters are not stable, but may change from run to run
2. They may change for the same run over time (history)
3. They may come in different flavors (depending e.g. on an algorithm)
3-dimensional version management
history
invalid_since
(year 4000 for actual version)
2 different flavours (contexts)
For example: beam, simulation
version
automatically defined
date_create
runs
valid_since
valid_until (default year 4000)
defined by user
Analysis workshop GSI Working with WebDB Ilse Koenig

3. Analysis workshop GSI 2012 Working with WebDB Ilse Koenig
Parameter versions
Later new versions 3 and 4
replace the old ones
Before a DST production we
do a beam time specific
parameter release
“history date with name”
Old versions can be retrieved
with an old history date
version 4
version 3
history
year 4000
Version 1
During a beam time the user
inserts a version 1.
Each new run is initialized
with version 1.
version 1
history date
Later he adds a version 2.
New runs are then initialized with version 2.
version 2
The crossing point of
run start and history date
defines the parameter version
date_create v2
invalid_since v1
real time
version 1
date_create v1
runs
valid_since v1
valid_since v2
year 4000
valid_until v1
run start
Analysis workshop GSI Working with WebDB Ilse Koenig

4. Generic parameter container HParCond
All parameters are stored as name – object pairs in the same set of tables
different versions
parameter
object
parameter container
name
type: Int_t, Float_t, Double_t, Char_t,
Text_t, UChar_t, class type
stored as byte array (RAW or BLOB)
number of values (single value or array)
class version
streamer info, root version for ROOT classes
own version management
any class derived from TObject decoded in the analysis interface by ROOT streamer
allows to add or discard (invalidate) a parameter
makes it (almost) code independent
Analysis workshop GSI Working with WebDB Ilse Koenig

5. Analysis workshop GSI 2012 Working with WebDB Ilse Koenig
Login in HADES WebDB
Direct link:
Click on Login button.
From HADES web page => internal => logbook => “HADES Oracle Database”
Pops up login form.
Login as user hades read only access (except beam time logbook) …_oper detector specific write access (parameter validation, …)
Analysis workshop GSI Working with WebDB Ilse Koenig

6. HADES WebDB: Root folder
user
Search in application titles and descriptions
Analysis workshop GSI Working with WebDB Ilse Koenig

7. Analysis workshop GSI 2012 Working with WebDB Ilse Koenig
HADES WebDB folders
Experiment infos, DAQ runs and logbooks
DAQ and Trbnet configuration, TRB TDC corrections
Monitoring of Magnet, Cryo and Cave temperatures and pressures
Root folder for interfaces to Slow Control data
Slow Control data stored online
Slow Control data for all beam times since 2010
Slow Control data for all beam times before 2010
Folder for RICH detector (since 2010)
Folder for MDC detector (since2010)
Folder for MDC detector (before 2010)
Folder for RPC detector (since 2010)
Folder for RPC detector (before2010)
ROOT folder for the analysis
Parameters in HADES analysis Hydra1 (runs before 2010)
Parameters in HADES analysis Hydra2 (runs after 2010)
Simulation projects and runs
Geometry used by simulation and analysis
Run validation for DST production
HADES Analysis Logbook (not used anymore)
HADES institutes, people and author lists
Documentation of Oracle accounts and utility software
Analysis workshop GSI Working with WebDB Ilse Koenig

8. HADES WebDB folder Hydra2 Parameters
Starting from a beam time it gives access to (almost) all parameter containers and shows changes since last parameter release
Folder for condition-style parameter containers
Folder for tree-style parameter containers
Analysis workshop GSI Working with WebDB Ilse Koenig

9. HADES WebDB: Hydra2 Parameters
Help
all parameter containers grouped by shared libraries
with links to the data
has changed
Analysis workshop GSI Working with WebDB Ilse Koenig

10. HADES WebDB: Parameter sets of HRpcClusFPar
Back to folder
Link to the data
Form to compare sets for different contexts, runs, history dates
Analysis workshop GSI Working with WebDB Ilse Koenig

11. HADES WebDB: Data of HRpcClusFPar
Analysis workshop GSI Working with WebDB Ilse Koenig