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The Gaudi Framework
v38r1p1 (ae26267b)
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The Gaudi Framework
v38r1p1 (ae26267b)
|
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* * 'Physisics do not like it, *
* * physisics do not need it, *
* * physisics do not use it' *
* * ****************************
* Usage: *
* *
* from GaudiAlg.Algs import GaudiAlgo, SUCCESS *
* *
* class MyClass(GaudiAlgo) : *
* ' My specific Algorithm, derived from GaudiAlgo base class ' *
* def __init__( self , name , **args ) : *
* 'Constructor from algorithm instance name & parameters' *
* #invoke the constructor of base class *
* GaudiAlgo.__init__(self , name , **args ) *
* *
* def initialize ( self ) : *
* 'Algorithm initialization' *
* # initialize the base class *
* status = GaudiAlgo.initialize( self ) *
* if status.isFailure() : return status *
* *
* # locate the services and tools *
* *
* # locate some tool: *
* extrapolator = self.tool(ITrExtrapolator,'TrExtrapolator') *
* *
* # locate the service *
* rndmSvc = self.svc(IRndmGenSvc, 'RndmGenSvc') *
* *
* return SUCCESS *
* *
* *
* def execute ( self ) : *
* 'Major method (from IAlgorithm interface)' *
* *
* # get some data from Transient Event Store *
* tracks = self.get('/Event/Rec/Tracks') *
* *
* # use counters *
* c1 = self.counter('#Tracks') *
* c2 = self.counter('No Tracks') *
* if tracks.empty : *
* c2+=1 *
* c1 += tracks->size() *
* *
* if 1000 < tracks.size() : *
* return self.Error('The event is *VERY* busy') *
* *
* return SUCCESS *
* *
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1.8.18