This note is composed from Igor's e-mail from 2013-08-14.
Add package (if necessary)
addpkg RegDB V00-01-16 scons
Run simple test:
% python RegDB/src/experiment_info.py
From Python code:
from RegDB import experiment_info
detectors = experiment_info.detectors('XPP','xppa4513',1)
print detectors
['BldEb-0|NoDevice-0',
'EpicsArch-0|NoDevice-0',
'NoDetector-0|Evr-0',
'XppEndstation-0|Opal1000-2',
'XppGon-0|Cspad-0',
'XppSb4Pim-1|Tm6740-1']
To get info which runs (and WHAT kind of runs) exist for the specified experiment do:
runs = experiment_info.experiment_runs('XPP','xppa4513')
print runs
[{'begin_time': 1375417636042155759L,
'begin_time_unix': 1375417636,
'end_time': 1375417646535192694L,
'end_time_unix': 1375417646,
'exper_id': 329L,
'id': 69762L,
'num': 1L,
'type': 'DATA'},
{'begin_time': 1375437784068608263L,
'begin_time_unix': 1375437784,
'end_time': 1375437816700510685L,
'end_time_unix': 1375437816,
'exper_id': 329L,
'id': 69763L,
'num': 2L,
'type': 'DATA'},
..
{'begin_time': 1375806447772306081L,
'begin_time_unix': 1375806447,
'end_time': 1375806491980944918L,
'end_time_unix': 1375806491,
'exper_id': 329L,
'id': 70074L,
'num': 189L,
'type': 'DATA'}]
The run number is given by key:
'num': 189L
The last key of the dictionary:
'type': 'DATA'
That is for normal data runs. A guess the idea is that people were able to change that to specify:
'type': 'CALIB'
This is already supported by I don't think we have any experiment where they're using it.
To access tags associated with run use method run_attributes(instr_name, exper_name, runnum):
instr_name = 'CXI'
exper_name = 'cxic0213'
runnum = 215
for attr in experiment_info.run_attributes(instr_name, exper_name, runnum):
print 'class:',attr['class']
print 'name:',attr['name']
print 'type (of the value):',attr['type']
print 'value (optional):',attr['val']
print 'description (optional):',attr['descr']
The value of an attribute is optional. If no value is set then you'll see None. The default description is the
empty string
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