PropertyProxy Namespace Reference

Classes
class	PropertyProxy
class	GaudiHandlePropertyProxyBase
class	GaudiHandlePropertyProxy
class	GaudiHandleArrayPropertyProxy
Functions
def	derives_from
def	_isCompatible
def	PropertyProxyFactory
Variables
list	__all__ = [ 'PropertyProxy', 'GaudiHandlePropertyProxy', 'GaudiHandleArrayPropertyProxy' ]
tuple	log = logging.getLogger( 'PropertyProxy' )

---

Function Documentation

def PropertyProxy::_isCompatible	(		tp,
			value
	)			[private]

Definition at line 30 of file PropertyProxy.py.

00030                               :
00031     errmsg = "received an instance of %s, but %s expected" % (type(value),tp)
00032 
00033     if derives_from(value, 'PropertyReference'):
00034         # TODO: implement type checking for references
00035         return value # references are valid
00036     if ( tp is str ):
00037         if ( type(value) is str ) or derives_from(value, 'Configurable'):
00038             # we can set string properties only from strings or configurables
00039             return value
00040         else:
00041             raise ValueError( errmsg )
00042     elif ( tp in [ list, tuple, dict ] ):
00043         if ( type(value) is tp ):
00044             # We need to check that the types match for lists, tuples and
00045             # dictionaries (bug #34769).
00046             return value
00047         else:
00048             raise ValueError( errmsg )
00049     elif derives_from(tp, 'Configurable'):
00050         return value
00051     else:
00052         # all other types: accept if conversion allowed
00053         try:
00054             dummy = tp( value )
00055         except (TypeError,ValueError):
00056             raise ValueError( errmsg )
00057 
00058     return dummy         # in case of e.g. classes with __int__, __iter__, etc. implemented
00059 
00060 
class PropertyProxy( object ):

def PropertyProxy::derives_from	(		derived,
			base
	)

A string version of isinstance().
<derived> is either an object instance, or a type
<base>    is a string containing the name of the base class (or <derived> class)

Definition at line 19 of file PropertyProxy.py.

00019                               :
00020     """A string version of isinstance().
00021     <derived> is either an object instance, or a type
00022     <base>    is a string containing the name of the base class (or <derived> class)"""
00023     if not isinstance(derived,type): derived=type(derived)
00024     if derived.__name__ == base: return True
00025     for b in derived.__bases__:
00026         if derives_from(b,base): return True
00027 
00028     return False
00029 
def _isCompatible( tp, value ):

def PropertyProxy::PropertyProxyFactory	(		descr,
			doc,
			default
	)

Definition at line 348 of file PropertyProxy.py.

00348                                                :
00349 #   print "PropertyProxyFactory( %s, %r )" % (descr.__name__,default)
00350     if isinstance(default,GaudiHandleArray):
00351         return GaudiHandleArrayPropertyProxy( descr, doc, default )
00352 
00353     if isinstance(default,GaudiHandle):
00354         return GaudiHandlePropertyProxy( descr, doc, default )
00355 
00356     return PropertyProxy( descr, doc, default )
    return PropertyProxy( descr, doc, default )

---

Variable Documentation

list PropertyProxy::__all__ = [ 'PropertyProxy', 'GaudiHandlePropertyProxy', 'GaudiHandleArrayPropertyProxy' ]

Definition at line 6 of file PropertyProxy.py.

tuple PropertyProxy::log = logging.getLogger( 'PropertyProxy' )

Definition at line 13 of file PropertyProxy.py.