From gapon@slac.stanford.edu Wed Aug 14 17:28:32 2013
Date: Wed, 14 Aug 2013 17:28:31 -0700
From: "Gaponenko, Igor" <gapon@slac.stanford.edu>
To: "Dubrovin, Mikhail" <dubrovin@slac.stanford.edu>
Cc: "Gaponenko, Igor" <gapon@slac.stanford.edu>
Subject: Fetching detector names from the database (instead of scanning XTC files)

Bring the following tag into your release:

  addpkg RegDB V00-01-14

Then do:

  scons

And you can see a simple test by running:

 python arch/x86_64-rhel5-gcc41-opt/python/RegDB/experiment_info.pyc

From your Python code do:

  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']


If you want to know 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

Also note 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.

	Regards,
	Igor