Non reversable mappings

Dave Winer: RSS 2.0 and the MetaWeblog API

While most of the RSS 1.0 modules are valid in RSS 2.0, few of these can be completely transported using the MetaWeblog APIs using only the instructions found in this RFC, due to a lack of description of how to handle things like attributes in namespaces, and elements with elements.

For now, I'll simply update my example based on the new RFC (as the encoding of source elements changed), and ask one question related to a core element:

Does XML RPC permit multiple members of a struct to have the same name?

XML-RPC Structs

Sam Ruby asks:Does XML RPC permit multiple members of a struct to have the same name?The XML-RPC spec is silent... [more]

Trackback from Cook Computing at
"Does XML RPC permit multiple members of a struct to have the same name?"

You could probably interpret the specification that way, but most implementations represent them as hashes/dictionaries, so the only practical answer is no.

Posted by Fredrik Lundh at
Fredrik gets it right. The spec doesn't disallow it, but it wouldn't work with most implementations. I know for sure it wouldn't work with Frontier or Radio.

Posted by Dave Winer at

Patient Evangelism

Todays new essay is a follow up to a blog entry posted over 8 months ago. The MetaWeblog API has since evolved with the introduction RSS 2.0, and this lead to a new RFC. My questions on that RFC have gone unanswered, and I have expanded upon them in t... [more]

Trackback from Sam Ruby at

Sam the Patient Evangelist.

Sam Ruby continues his "patient evangelism" and has released a new essay entitled Evolution of the Weblog APIs. Its black and white arguments like these that made me lose favor with XML-RPC and the like and develop RESTful leanings. It puzzles me that anyone can still insist that XML-RPC is somehow simpler or better suited.... [more]

Trackback from tima thinking outloud. at

Patient Evangelism. Todays new essay is a follow up to a blog entry posted over 8 months ago. The MetaWeblog API has since evolved with the introduction RSS 2.0, and this lead to a new RFC. My questions on that RFC have gone unanswered, and I have...

Excerpt from TIG's Corner at

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