class DBList(MutableSequence, Persistent):
def __init__(self, source=None):
self.plist = ZPersistentList()
if source is not None:
self.extend(source) # TODO: extend the plist instead, after
# validating the types of the items in source
def __getitem__(self, index):
return self.plist[index]
def __setitem__(self, index, value):
if not isinstance(value, (basestring, int, long, bool, type(None), DBDict, DBList)):
raise TypeError("Values can only be those supported by the ZODB backend.")
self.plist[index] = value
def __delitem__(self, index):
del self.plist[index]
def insert(self, index, value):
if not isinstance(value, (basestring, int, long, bool, type(None), DBDict, DBList)):
raise TypeError("Values can only be those supported by the ZODB backend.")
self.plist.insert(index, value)
def __len__(self):
return len(self.plist)
def __iter__(self):
return self.plist.__iter__()
def __contains__(self, value):
return self.plist.__contains__(value)
