The S stands for satire

The cynical view of SOAP is not new, but this piece (“The S stands for Simple” by Pete Lacey) puts it down in the best form I’ve seen so far. What makes it such a good satire is not the funny writing (“Saints preserve us! Alexander the Great couldn’t unravel that” on reading the XSD spec) but how true it is to what really took place. There was plenty of room for exaggeration to get additional comic effect but Pete staid clear of that and the resulting piece is much more powerful for it.

I am impatiently waiting for the second installment, when the poor developer gets introduced to the WS-Addressing disaster.

I love the piece, but it doesn’t mean I have given up on SOAP. The fact that there was a lot of bumping around trying to find out how SOAP is most useful is not bad per se even if the poor developer left a few handfuls of hair on the floor in the process (that’s the joy of being an early adopter, right?). Many other good technologies go through that, in fact this is what makes them good, figuring out what they should not do.

SOAP is indeed for doc exchange (not “wrapped-doc/lit”). If you need end to end security, reliability or transaction then it helps you with that. If you don’t need them but think you might need them someday then the cost of putting your message in a SOAP envelope it pretty low, so do it. If you know you won’t need that then by all means POX all you want. And BTW, while the “role” attribute is indeed useless, “mustUnderstand” is very important. In fact, it would be very nice to have something like this for any portion of the message, not just headers. And speaking of extending header goodies to the body, EPRs would be useful if they were a real mechanism for templatizing SOAP messages (any part of the message, with a way to indicate what portions are there because of the template) instead of a dispatching crutch for sub-standard SOAP stacks. And since I have switched into “Santa Claus list” mode, the other piece we need is a non-brittle XML contract language. That’s for a future blog entry.

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