Re: [Zope] how much does changing a property add to data.fs??

Robert Rottermann wrote:

Is it only the changed attribute that is added to the end of data.fs or is the whole object copied???

Not as simple as that... it depends whether the attribute type subclasses Persistent or not. eg: Take an object, x, whose class subclasses Persistent x.a=1 x.b=PersistentMapping() Now, doing: x.a +=1 ...would cause a whole copy of x to be appended to the Data.fs doing: x.b['fish']='halibut' ...would cause only a new copy of b to be added to the Data.fs Unfortunately, because of the way they're implemented, properties behave like a :-( cheers, Chris