Hi,
I'm trying to use recursion in a view... maybe.
Actually, I'm trying to use one GET to retrieve a document and its
(possibly nested) snippets.
{_id: "TestDoc", type: "doc", title: "Test Title"}
{_id: "snip1", type: "snip", parent: "TestDoc", contents: "...",
order: 1}
{_id: "snip1a", type: "snip", parent: "snip1", contents: "...", order:
1}
{_id: "snip1b", type: "snip", parent: "snip1", contents: "...", order:
2}
{_id: "snip2", type: "snip", parent: "TestDoc", contents: "...",
order: 2}
So, I tried cmlenz's blog post with View Collation (http://www.cmlenz.net/archives/2007/10/couchdb-joins
), but it only did one level. I like the approach of the snippets
being their own docs, because I think (hope) the update volume on
those will be high.
I'm wondering if there are other goodies like map() available in view
functions. Will I need to call this()? Should I have the child doc /
snip keep track of its parent's ids as I've laid out above? It seems
like this might lead to a lot of calls instead of the single call I
want to make.
It just doesn't feel right to have the parents keep track of its
children's ids, for chance of orphaning, maint. nightmares, and more.
Who knows, maybe it's a better approach. Even if I take that route,
when iterating thru the children of a doc, how do I recursively call
the function? Can there be subfuns in Javascript (well, CouchDB views)?
Or a totally new approach is warranted?
Cheers,
BA
