"""
Objects with No values
"""
from galaxy.datatypes.metadata import MetadataCollection
from galaxy.datatypes.registry import Registry
[docs]class RecursiveNone:
def __str__( self ):
return "None"
def __repr__( self ):
return str( self )
def __getattr__( self, name ):
value = RecursiveNone()
setattr( self, name, value )
return value
def __nonzero__( self ):
return False
[docs]class NoneDataset( RecursiveNone ):
def __init__( self, datatypes_registry = None, ext = 'data', dbkey = '?' ):
self.ext = self.extension = ext
self.dbkey = dbkey
if datatypes_registry is None:
# Default Value Required for unit tests
datatypes_registry = Registry()
datatypes_registry.load_datatypes()
self.datatype = datatypes_registry.get_datatype_by_extension( ext )
self._metadata = None
self.metadata = MetadataCollection( self )
def __getattr__( self, name ):
return "None"