FileDictionary: Tiny Squeak Database
Last updated at 12:20 pm UTC on 9 July 2018
Simple database structure for Squeak
FileDictionary ( http://guzdial.cc.gatech.edu/st/filedict.8May1231pm.cs ) is a super-simple database for Squeak.
Basically, you can use it like a Dictionary, except that you
The parts of the Dictionary protocol that FileDictionary understands:
- (a) must create it with a fileNamed: method and
- (b) you must explicitly open and close the FileDictionary.
FileDictionary actually uses two files. The data (values) will be stored in the filename provided when creating the FileDictionary. The index into the database will be stored in a file with the same name, adding on the suffix ".toc" (for Table Of Contents). The TOC file is what gets read at open and written at close.
More about this: http://www.cc.gatech.edu/fac/mark.guzdial/squeak/filedict.html
http://guzdial.cc.gatech.edu/st/dbtools.st is a better version (a couple of minor updates).
http://guzdial.cc.gatech.edu/st/SmartFileDictionary.st is a version that uses SmartRefStream, so it can handle just about any kind of object being stored (including cycles, references to classes, etc.) – Mark Guzdial 3/4/99
A local copy of the code