d2r: hierarchy on OPML subscription lists

hierarchy on OPML subscription lists

Dave is asking about hierarchy on OPML subscription lists and what do aggregator developers think. Today, clevercactus beta3 (not yet released publicly) supports (both for generating and reading) hierarchy in OPML as follows:

If an outline elements only has a title, then it is assumed to contain other outline elements inside and should be closed with a /outline tag.
If not (that is, if URL information is included), then the outline is self-contained and assumed to be a link within the current position in the hierarchy.

This, by the way, is the same as what Newzcrawler does, so that would make two aggregators that work in the same way. Not sure about the others though.

Categories: technology
Posted by diego on October 14 2003 at 2:12 PM

Comments (please see the comments & trackback policy).

This is how my MT plugin, Outliner, handles things as well. If a tag contains only a text or title attribute, it's assumed to be a folder containing other items. Then those items within are the actual data points.

Posted by: jayseae at October 14, 2003 5:03 PM