python.PropertyProxy.PropertyProxy Class Reference

Inheritance diagram for python.PropertyProxy.PropertyProxy:

Collaboration diagram for python.PropertyProxy.PropertyProxy:

Public Member Functions
def	__init__ (self, descr, docString=None, default=None)
def	setDefault (self, value)
def	getDefault (self)
def	fullPropertyName (self, obj)
def	__get__ (self, obj, type=None)
def	__set__ (self, obj, value)
def	__delete__ (self, obj)

Public Attributes
	history
	descr

Properties
	default = property( getDefault, setDefault )

Private Attributes
	__doc__
	__default

Detailed Description

Definition at line 76 of file PropertyProxy.py.

Constructor & Destructor Documentation

__init__()

def python.PropertyProxy.PropertyProxy.__init__	(		self,
			descr,
			docString = None,
			default = None
	)

Reimplemented in python.PropertyProxy.DataHandlePropertyProxy, python.PropertyProxy.GaudiHandleArrayPropertyProxy, and python.PropertyProxy.GaudiHandlePropertyProxy.

Definition at line 77 of file PropertyProxy.py.

   def __init__( self, descr, docString=None, default=None ):
      self.history = weakref.WeakKeyDictionary()
      self.descr   = descr
      if docString:
         self.__doc__ = docString
      if default is not None:
         self.default = default
 

Member Function Documentation

__delete__()

def python.PropertyProxy.PropertyProxy.__delete__	(		self,
			obj
	)

Definition at line 172 of file PropertyProxy.py.

   def __delete__( self, obj ):
      if obj in self.history:
         del self.history[ obj ]
      self.descr.__delete__( obj )
 
 
 

__get__()

def python.PropertyProxy.PropertyProxy.__get__	(		self,
			obj,
			type = None
	)

Reimplemented in python.PropertyProxy.DataHandlePropertyProxy, and python.PropertyProxy.GaudiHandlePropertyProxyBase.

Definition at line 96 of file PropertyProxy.py.

   def __get__( self, obj, type = None ):
      value = None
      try:
         value = self.descr.__get__( obj, type )
      except AttributeError:
       # special case for list and set: allow default to work with on +=;
       # unfortunately, that means that direct access also succeeds, even
       # as the property wasn't set yet ... (TODO: ideas??)
         if self.__default.__class__ == list or self.__default.__class__ == set:
            self.descr.__set__( obj, self.__default.__class__(self.__default) )
            value = self.descr.__get__( obj, type )     # no history
         else:
            raise
 
      if value is None:
         value = self.descr.__get__( obj, type )
 
    # locked configurables return copies to prevent modifications
      if obj.isLocked():
         import builtins
         if builtins.type( value ) is dict:
            from ctypes import pythonapi, py_object
            from _ctypes import PyObj_FromPtr
            PyDictProxy_New = pythonapi.PyDictProxy_New
            PyDictProxy_New.argtypes = (py_object,)
            PyDictProxy_New.rettype = py_object
            value = PyObj_FromPtr( PyDictProxy_New( value ) )
         elif builtins.type( value ) is list:
            value = tuple( value )      # point being that tuple is read-only
         else:
            import copy
            value = copy.copy( value )
 
      return value
 

__set__()

def python.PropertyProxy.PropertyProxy.__set__	(		self,
			obj,
			value
	)

Reimplemented in python.PropertyProxy.DataHandlePropertyProxy, and python.PropertyProxy.GaudiHandlePropertyProxyBase.

Definition at line 131 of file PropertyProxy.py.

   def __set__( self, obj, value ):
    # locked configurables can no longer be changed
      if obj.isLocked():
         raise RuntimeError(
            'can not change property "%s" of locked configurable "%s"' %
            (self.descr.__name__, obj.getJobOptName()) )
 
    # check value/property compatibility if possible
      proptype = None
      if hasattr( self, 'default' ):
         proptype = type(self.default)
      elif obj in self.history:
         proptype = type( self.history[ obj ][ 0 ] )
 
    # check if type known; allow special initializer for typed instances
      if proptype and not isinstance(proptype, type(None)):
        # check value itself
          value = _isCompatible( proptype, value, self.fullPropertyName(obj) )
 
        # check elements in case of list
          if proptype == tuple or proptype == list:
             try:
                oldvec = self.descr.__get__( obj, type )
                if oldvec:
                   tpo = type(oldvec[0])
                   for v in value:
                      _isCompatible( tpo, v, self.fullPropertyName(obj) )
             except AttributeError:
              # value not yet set
                pass
 
    # allow a property to be set if we're in non-default mode, or if it
    # simply hasn't been set before
      if not obj._isInSetDefaults() or obj not in self.history:
       # by convention, 'None' for default is used to designate objects setting
         if hasattr( self, 'default' ) and self.default is None:
            obj.__iadd__( value, self.descr )     # to establish hierarchy
         else:
            self.descr.__set__( obj, value )
         self.history.setdefault( obj, [] ).append( value )
 

fullPropertyName()

def python.PropertyProxy.PropertyProxy.fullPropertyName	(		self,
			obj
	)

Definition at line 93 of file PropertyProxy.py.

   def fullPropertyName( self, obj ):
      return (obj.getJobOptName() or obj.getName()) + '.' + self.descr.__name__
 

getDefault()

def python.PropertyProxy.PropertyProxy.getDefault

(

self

)

Definition at line 88 of file PropertyProxy.py.

   def getDefault( self ):
      return self.__default
 

setDefault()

def python.PropertyProxy.PropertyProxy.setDefault	(		self,
			value
	)

Definition at line 85 of file PropertyProxy.py.

   def setDefault( self, value ):
      self.__default = value
 

Member Data Documentation

__default

python.PropertyProxy.PropertyProxy.__default

private

Definition at line 86 of file PropertyProxy.py.

__doc__

python.PropertyProxy.PropertyProxy.__doc__

private

Definition at line 81 of file PropertyProxy.py.

descr

python.PropertyProxy.PropertyProxy.descr

Definition at line 79 of file PropertyProxy.py.

history

python.PropertyProxy.PropertyProxy.history

Definition at line 78 of file PropertyProxy.py.

Property Documentation

default

python.PropertyProxy.PropertyProxy.default = property( getDefault, setDefault )

static

Definition at line 91 of file PropertyProxy.py.

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The documentation for this class was generated from the following file:

• PropertyProxy.py