Log of /trunk/bindings/pyroot/inc/TPySelector.h

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Revision 36574 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Nov 10 01:27:45 2010 UTC (4 years, 2 months ago) by wlav
File length: 2024 byte(s)
Diff to previous 26817

make TSelector protected datamembers available in TPySelector

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Revision 26817 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Dec 11 00:16:46 2008 UTC (6 years, 1 month ago) by wlav
File length: 1843 byte(s)
Diff to previous 23135

 o) comment updates, error checking, refactoring

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Revision 23135 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Apr 11 08:16:55 2008 UTC (6 years, 9 months ago) by rdm
File length: 1801 byte(s)
Diff to previous 22698

move the following directories to "bindings":

ruby, pyroot

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Revision 22698 - (view) (download) (as text) (annotate) - [select for diffs]
Added Tue Mar 18 01:02:02 2008 UTC (6 years, 10 months ago) by wlav
Original Path: trunk/pyroot/inc/TPySelector.h
File length: 1801 byte(s)

Initial TPySelector prototype for use with PROOF. The prototype
works, but needs improvement error reporting, resilience, and
optimizations. Basic Idea:


from ROOT import TPySelector

class MyPySelector( TPySelector ):
   def Begin( self ):
      print 'py: beginning'

   def SlaveBegin( self, tree ):
      print 'py: slave beginning'

   def Process( self, entry ):
      print 'py: processing for:', self, self.fChain
      return 1

   def SlaveTerminate( self ):
      print 'py: slave terminating'

   def Terminate( self ):
      print 'py: terminating'

def GetSelector():
   return MyPySelector()


The for now conventional "GetSelector()" will be removed soon, in
favor of the same scheme (a derived class check) like with C++
selectors. The code above can then be run like so (localhost):


import time
from ROOT import TDSet, TProof

dataset = TDSet( 'TTree', 'h42' )
dataset.Add( 'root:// .... ' )

proof = TProof.Open('')
time.sleep(1)                # needed for GUI to settle
print dataset.Process( 'TPySelector', 'MyPySelector.py' )


Do make sure to transport the MyPySelector.py in a .par file (or
similar), and do make sure that the environment on the other end
is proper.