socialmedian: Malthe Borch: Emperor's new clothes

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Malthe Borch: Emperor's new clothes

Submitted by Jgmize from Google Reader

Nov 06, 2009

Summary

The Zope Component Architecture is often touted for letting you override so-called components which have already been registered elsewhere (by a library, out of your immediate control).

It's wrong.

Shrink-wrap software is a circumstance. If you must change it from outside (instead of branching, which is a fine approach in many cases), just go ahead and update the functions or classes in question using the reload approach (object identity changes should be avoided at all costs).

There's nothing wrong with ZCA; it's in my view a misunderstanding to employ it for web application development at large. Rather, it's applicable for deployments that require live software component introspection. I don't know that web applications need this in general. What happens is that frameworks like Zope Toolkit and Plone use these introspection features to map requests to code. That's a bit like using RDIF tags for consumption tracking (hint: require credit card payment or identity-based rebate instead).

Most software is misunderstood. How to use it, when to use it. Sometimes it's ...Read the full article

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