Holarchy 101

Herbert Simon’s parable of the watchmakers was constructed to convey his belief that complex systems will evolve from simple systems much more rapidly if there are stable intermediate forms present in that evolutionary process than if they are not present. … Read More

The parable of the two watchmakers

The parable of the two watchmakers was introduced by Nobel Prize winner Herbert Simon to describe the complex relationship of subsystems and their larger wholes. There once were two watchmakers, named Hora and Tempus, who made very fine watches. The … Read More

Travelin’ lite (the only way to fly)

Of course, you can’t code up a (meaningful) system without some number of building blocks. So even in a perfectly architected and layered system, you inevitably accumulate some baggage as you move up the stack. The trick, though, is to … Read More

Identifying transitive closures with Structure101

Here an interesting use case. I am currently working on a reuse project. We have a large legacy Java application that we are trying to farm for implementations of some high level functions in a new application. To do this … Read More

Graphviz on steroids

We just released our new generic jobbie, Structure101g. If you already know Structure101 for Java or Structure101 for C/C++, you probably already have a good idea of what Structure101g might be. This is for those (and there are many, oh … Read More

Software erosion and package tangles

My recent post on architectural erosion in the findbugs code-base was generally well received, but there were some skeptical voices. In a comment, Emeric questioned whether cyclic dependencies at the package level are anything more than a smell (if that). … Read More

Software erosion in pictures – Findbugs

My particular area of interest in software these days is the importance of levels of abstraction above the raw code. In Java, the most natural place for these to manifest themselves is through the package structure (though this is certainly … Read More

Structure101 Takes Home Jolt Productivity Award

Just got back from SD West and unpacked our Jolt Productivity Award. Huge credit and thanks to all the users that provided the stream of feature suggestions that has contributed to making Structure101 such a great product. And congratulations to … Read More

Structure101 named 2008 JOLT finalist …

… in the Design and Modeling category. Yeah!

Structure101 3.1 – Software Architecture Sandboxing

Just released, Version 3.1 adds lots of new stuff to the Architecture perspective to make it much easier to discover the current structure and move classes or packages around to define a preferred architecture. First thing is a simple expand … Read More