CommonGaudiConfigurables.py

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# File: Gaudi/CommonGaudiConfigurables.py
# Author: Pere Mato (pere.mato@cern.ch)

"""
  This module would scan all known Gaudi configurable modules for
  'Configurable' classes and fill __all__ such that it can be imported
  by any module requiring it.
"""

from GaudiKernel.Configurable import Configurable
from GaudiKernel.ConfigurableMeta import ConfigurableMeta
__all__ = []

packages = ['GaudiCoreSvc', 'GaudiCommonSvc', 'GaudiSvc', 'GaudiAlg',
            'GaudiAud', 'GaudiPoolDb', 'RootHistCnv', 'GaudiUtils',
            'RootCnv']

#--Loop open all listed packages and populate __all__ with the names and
#  the local scope with the Configurable classes
for package in packages :
    try:
        mod = __import__( '%s.%sConf'%(package,package), globals(), locals(), ['%sConf'%package] )
        for nam in dir(mod) :
            cls = getattr(mod, nam)
            if type(cls) is ConfigurableMeta and issubclass(cls, Configurable) :
                globals()[nam]  =  cls
                __all__.append(nam)
    except ImportError:
        # ignore the configurables from missing packages.
        pass

#--Fix some of the name idiosyncrasies in Gaudi
aliases = {
           'EventDataSvc':             'EvtDataSvc',
           'DetectorDataSvc':          'DetDataSvc',
           'HistogramDataSvc':         'HistogramSvc',
           'HbookHistSvc':             'HbookCnv__PersSvc',
           'RootHistSvc':              'RootHistCnv__PersSvc',
           'EventPersistencySvc':      'EvtPersistencySvc',
           'DetectorPersistencySvc':   'DetPersistencySvc',
           'HistogramPersistencySvc':  'HistogramPersistencySvc',
           'FileRecordPersistencySvc': 'PersistencySvc',

           'FileCatalog':              'Gaudi__MultiFileCatalog',
           'IODataManager':            'Gaudi__IODataManager',

           'RootCnvSvc':               'Gaudi__RootCnvSvc',
           'RootEvtSelector':          'Gaudi__RootEvtSelector',
           }

_gbl = globals() # optimization
# This would be nicer with dict comprehension (http://www.python.org/dev/peps/pep-0274)
# but it is available only in Python 2.7
aliases = dict([(new, _gbl[old])
                for new, old in aliases.items()
                if old in _gbl]) # do the aliasing only if the original is available
# change the default name
for new in aliases:
    aliases[new].DefaultedName = new
# update globals and __all__
_gbl.update(aliases)
__all__.extend(aliases)
# remove temporaries
del _gbl, new