python.Configurables._PyCompHandle Class Reference

Inheritance diagram for python.Configurables._PyCompHandle:

Collaboration diagram for python.Configurables._PyCompHandle:

Public Member Functions
	__init__ (self, parent, attr_name)
	__getattribute__ (self, n)
	__setattr__ (self, n, v)

Protected Member Functions
	_init_once (self, obj)

Detailed Description

a class to mimic the gaudi C++ {Tool,Svc}Handle classes: automatic call
to `initialize` when __getattr__ is called on the instance.

Definition at line 209 of file Configurables.py.

Constructor & Destructor Documentation

__init__()

python.Configurables._PyCompHandle.__init__	(		self,
			parent,
			attr_name )

Definition at line 213 of file Configurables.py.

    def __init__(self, parent, attr_name):
        msg = parent.msg.verbose
        try:
            parentName=parent.name()
        except TypeError:
            parentName=parent.name
        msg('installing py-comp-handle for [%s.%s]...',
            parentName, attr_name)
        self.__dict__.update({
            '_parent': parent,
            '_name': attr_name,
            '_attr': getattr(parent, attr_name),
            '_init_called': False,
            })
        msg('installing py-comp-handle for [%s.%s]... [done]',
            parentName, attr_name)
        return
 

Member Function Documentation

__getattribute__()

python.Configurables._PyCompHandle.__getattribute__	(		self,
			n )

Definition at line 241 of file Configurables.py.

    def __getattribute__(self, n):
        if n.startswith('_'):
            return super().__getattribute__(n)
        obj = self.__dict__['_attr']
        self._init_once(obj)
        return getattr(obj, n)
 

__setattr__()

python.Configurables._PyCompHandle.__setattr__	(		self,
			n,
			v )

Definition at line 248 of file Configurables.py.

    def __setattr__(self, n, v):
        if n.startswith('_'):
            return super().__setattr__(n,v)
        obj = self.__dict__['_attr']
        self._init_once(obj)
        return setattr(obj, n, v)
 
 

_init_once()

python.Configurables._PyCompHandle._init_once ( self, obj )

protected

Definition at line 231 of file Configurables.py.

    def _init_once(self, obj):
        if self.__dict__['_init_called']:
            return
        parent = self.__dict__['_parent']
        # FIXME: should we raise something in case initialize failed ?
        obj.initialize()
        self.__dict__['_init_called'] = True
        # replace the handle with the proxied object
        setattr(parent, self.__dict__['_name'], obj)
 

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

• Configurables.py