On Jul 3, 2008, at 15:01, Bradford Winfrey wrote:
Hello everyone, been stalking the mailing list for a while and
thought this might be worthy of a post as I was asked to solve it,
yet, I couldn't!
Let's take the classic blog example document with the following
fields/values:
"_id": "1f2fc3955b91aed5e7369f0b0ba8214e",
"_rev": "1226709986",
"Author": "Bradford",
"Type": "Post",
"Body": "Just mentioning this for a sample blog post.",
"PostedDate": "2008-07-02T23:22:12-04:00",
"Subject": "My Fine Blog Post",
"Tags": ["octopus","hockey","squidward","bradford","recreation"]
Next, I'd like to find each blog post that contains ANY of the
following tags ["octopus","hockey"]. Now, generally speaking this
isn't so bad. We could write a simple view:
function (doc) {
if (doc.Type == 'Post') {
for (var i = 0;i < doc.tags.length; i++) {
emit(doc.tags[i],doc);
}
}
}
We would get back each one of our tags as a key, yea? Only if we
supplied one at a time. So how does one go about supplying a range,
array (not sure what we'd call it here) of keys to be searched on?
http://...?key=["octopus","hockey";] maybe? I'm unsure of the plan
of attack for such a thing. Maybe I'm just going about it in the
wrong direction. Any thoughts?
have a look at the bottom of http://wiki.apache.org/couchdb/HttpViewApi
for the view query options. Specifically the startkey= and endkey= ones.
Note that you only get consecutive ranges with that. To retrieve
arbitrary
tags, you'd need to run a query per tag with the key= option.
Cheers
Jan
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