Category Archives: Smalltalk

PUM/Gemstone – migration of instances …

When creating new versions of a model one might change already defined classes in that model and add or remove attributes from that class definition. Gemstone is able to handle different versions of classes and allows the programmer to migrate … Continue reading

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Reading QR images via Gemstone (server side Linux)

Ok, yesterday I posted a short message about creating QR codes on the server via Gemstone. In the afternoon I wanted to implement the reverse way: you have a picture on the server and you want to have the content … Continue reading

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Creating QR codes from Gemstone (server side under Linux) …

A nice library to create QR codes has been created by Kentaro Fukuchi. You may either use the low level C functions offered by his library but a much easier access you get by binding his own tool to create … Continue reading

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Working with small machines again …

… and remember in the eighties where Smalltalk-80 ran under Atari-Mega ST in 4 MB of RAM ? That’s history, hardware is fast enough to run even the most difficult software in pretty good speed – at least under Desktop … Continue reading

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PUM 2.3.23 and Gemstone

During last weeks lots of stuff has changed in PUM. Its now in in the phase to make it stable again against the standard REST/JSON/server infrastructure in Gemstone/S. * API definitions can now poduce source code for CRUD calls in … Continue reading

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VASmalltalk 8.6.1 has been published …

… and after some hours working with it: it looks pretty cool. Switched the whole PUM project to 8.6.1 just by importing the config maps.

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PUM 2.0.3 – Gemstone Sorting/Index Definitions

Only minor news: * with 2.0.3 the first support for SortedCollection within the modeller has been added – but only one attribute level has been added so far – resulting in code like: SortedCollection sortBlock: [ :a :b | a … Continue reading

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