Space Manager

SpaceManager is, in essence, ManagedTables on the disk. Instead of providing an array of pointers to tables, it provides an Ordered Collection of disk-based Objects, in our case stored in ObjectFiler format.

The underlying design is just managed tables: an array of integers representing file addresses. At each file position, find the beginning of the ObjectFiler object.

To access a given object, send objectInSpaceNumber:, which just positions the file and invokes ObjectFiler to instantiate the object.

SpaceManager is given a pretty face in the VirtualDictionary?, part of DictionaryStack?.

(RonJeffries)