The reduce function Im using is:
function(key, values) { var s = 0; for(i = 0; i < values.length; i++) { s
+= values[i]; } return s; }
But the combined map-reduce doesn't produce what I want which is totals for
each thread.
The data Im working with is simple: documents containing a threadId and a
counter, e.g.
{
threadId: "78d7bb17-7c89-456f-82e8-e18f1727c1f7",
comments: 1
}
The complete design doc for my view looks like this:
{
"total_rows": 1,
"offset": 0,
"rows": [
{
"doc": {
"language": "javascript",
"version": 1,
"views": {
"seen": {
"map": "function(doc) { if (doc.threadId &&
doc.comments) { emit(doc.threadId.toLowerCase(), doc.comments); } }",
"reduce": "function(key, values) { var s = 0; for(i
= 0; i < values.length; i++) { s += values[i]; } return s; }"
}
},
"_rev": "1-a75768a5fc3b5cc2304adc7d5bfb37f6",
"_id": "_design/fabric"
},
"id": "_design/fabric",
"key": "_design/fabric",
"value": {
"_conflicts": [],
"rev": "1-a75768a5fc3b5cc2304adc7d5bfb37f6"
}
}
]
}
My understanding is that reduce only happens when group=true is supplied
via query string right?
So Im calling GET on
http://localhost:5984/database/_design/fabric/_view/seen?group=true
The output Im getting shows the total for all documents and only one
threadId even though my sample data is four documents conmtaining two
unique threads with totals.
For sure, Im misunderstanding :-)
On Tuesday, February 24, 2015 at 11:52:30 AM UTC-5, Jens Alfke wrote:
>
> function(keys, values, rereduce) {
> var total = 0;
> for (var i=0; i<values.length; i++)
> total += values[i];
> return total;
> }
>
> —Jens
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