## Handle

More...

Public Member Functions
def	__init__ (self, typeString, kwargs)

def	__str__ (self)

def	isValid (self)

def	product (self)

Private Member Functions
def	_addressOf (self)

def	_resetWrapper (self)
	Private member functions ##. More...

def	_setStatus (self, getByLabelSuccess, labelString)

def	_typeInfoGetter (self)

Private Attributes
	_exception

	_nodel

	_type

	_typeInfo

	_wrapper

Detailed Description

## Handle

Python interface to FWLite Handle class

Definition at line 49 of file __init__.py.

Constructor & Destructor Documentation

def python.Handle.__init__	(	self,
		typeString,
		kwargs
	)

Initialize python handle wrapper

Definition at line 54 of file __init__.py.

                   **kwargs):
         """Initialize python handle wrapper """
         # turn off warnings
         oldWarningLevel = ROOT.gErrorIgnoreLevel
         ROOT.gErrorIgnoreLevel = ROOT.kError
         self._nodel = False
         if kwargs.get ('noDelete'):
             print "Not deleting wrapper"
             del kwargs['noDelete']
         else:
             self._nodel = True
         self._type = typeString 
         self._resetWrapper()
         self._exception = RuntimeError ("getByLabel not called for '%s'", self)
         # restore warning state
         ROOT.gErrorIgnoreLevel = oldWarningLevel
         # Since we deleted the options as we used them, that means
         # that kwargs should be empty.  If it's not, that means that
         # somebody passed in an argument that we're not using and we
         # should complain.
         if len (kwargs):
             raise RuntimeError("Unknown arguments %s" % kwargs)
 

Member Function Documentation

def python.Handle.__str__ ( self )

Definition at line 90 of file __init__.py.

References PGeometricDet::Item._type, python.Handle._type, MELaserPrim._type, and TrackerGeometryCompare._type.

Referenced by edmStreamStallGrapher.Point.__repr__(), BeautifulSoup.Tag.__repr__(), BeautifulSoup.Tag.__unicode__(), and BeautifulSoup.Tag.prettify().

     def __str__ (self):
         return "%s" % (self._type)

def python.Handle._addressOf ( self )

private

(Internal) Return address of edm wrapper

Definition at line 113 of file __init__.py.

References python.Handle._wrapper.

     def _addressOf (self):
         """(Internal) Return address of edm wrapper"""
         return ROOT.AddressOf (self._wrapper)
 
 

def python.Handle._resetWrapper ( self )

private

Private member functions ##.

(Internal) reset the edm wrapper

Definition at line 96 of file __init__.py.

     def _resetWrapper (self):
         """(Internal) reset the edm wrapper"""
         self._wrapper   = ROOT.edm.Wrapper (self._type)()
         self._typeInfo  = self._wrapper.typeInfo()
         ROOT.SetOwnership (self._wrapper, False)
         # O.k.  This is a little weird.  We want a pointer to an EDM
         # wrapper, but we don't want the memory it is pointing to.
         # So, we've created it and grabbed the type info.  Since we
         # don't want a memory leak, we destroy it.
         if not self._nodel :
             ROOT.TClass.GetClass("edm::Wrapper<"+self._type+">").Destructor( self._wrapper )
 

def python.Handle._setStatus	(	self,
		getByLabelSuccess,
		labelString
	)

private

(Internal) To be called by Events.getByLabel

Definition at line 118 of file __init__.py.

References python.Handle._exception.

     def _setStatus (self, getByLabelSuccess, labelString):
         """(Internal) To be called by Events.getByLabel"""
         if not getByLabelSuccess:
             self._exception = RuntimeError ("getByLabel (%s, %s) failed" \
                                             % (self, labelString))
             return
         if not self._wrapper.isPresent():
             self._exception = RuntimeError ("getByLabel (%s, %s) not present this event" \
                                             % (self, labelString))
             return
         # if we're still here, then everything is happy.  Clear the exception
         self._exception = None
 
 

def python.Handle._typeInfoGetter ( self )

private

(Internal) Return the type info

Definition at line 108 of file __init__.py.

References python.Handle._typeInfo.

     def _typeInfoGetter (self):
         """(Internal) Return the type info"""
         return self._typeInfo
 
 

def python.Handle.isValid ( self )

Returns true if getByLabel call was successful and data is
present in handle.

Definition at line 77 of file __init__.py.

References python.Handle._exception.

Referenced by ntupleDataFormat._Object._checkIsValid(), and core.AutoHandle.AutoHandle.ReallyLoad().

     def isValid (self):
         """Returns true if getByLabel call was successful and data is
         present in handle."""
         return not self._exception
 
 

def python.Handle.product ( self )

Returns product stored in handle.

Definition at line 83 of file __init__.py.

References python.Handle._exception.

     def product (self):
         """Returns product stored in handle."""
         if self._exception:
             raise self._exception
         return self._wrapper.product()
 
 