[ZODB-Dev] IStorageIteration

[Jim Fulton]

On Feb 11, 2008, at 4:19 PM, Christian Theune wrote:
> Context could be given as a reference date that is opaque to the  
> client
> and can differ from storage to storage, a file pointer could serve  
> this
> purpose. The API still might include the `length` of the data returned
> to minimize round-trips.


Actually, a file position doesn't work either, because the storage  
server can't know that much about what it is serving.

I suspect the only sane approach is to make the storage server  
maintain the iterator returned by the underlying storage on behalf of  
the client.  This will cause resources to be allocated on the server  
that might only be freed when the client disconnects.

Jim

--
Jim Fulton
Zope Corporation