Created
January 13, 2012 21:19
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Map Reduce for Free-5947
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db.logs.remove() | |
db.logs.insert( | |
{"name":"James Carr", | |
"log" : [ | |
{ | |
"comment" : "", | |
"time" : ISODate("2011-11-01T21:37:44.897Z"), | |
"user" : "Brad ************", | |
"action" : "Call", | |
"_id" : ObjectId("4eb066a875385d0a71063056") | |
}, | |
{ | |
"comment" : "vm em", | |
"time" : ISODate("2011-11-01T21:38:58.751Z"), | |
"user" : "Brad **********", | |
"action" : "Left Message", | |
"_id" : ObjectId("4eb066f275385d0a71063076") | |
}, | |
{ | |
"comment" : "Rest period expired, ready to be re-contacted.", | |
"time" : ISODate("2011-11-02T00:41:09.517Z"), | |
"user" : "", | |
"action" : "recycled", | |
"_id" : ObjectId("4eb091a587d45c5073015317") | |
} | |
], | |
} ) | |
// map function | |
map = function(){ | |
this.log.forEach( | |
function(log){ | |
year = log.time.getFullYear() | |
month = log.time.getMonth() | |
day = log.time.getDate() | |
emit( {name: this.name, year: year, month: month, day: day} , { count : 1 } ); | |
} | |
); | |
}; | |
// reduce function | |
reduce = function(key, values) { | |
var count = 0; | |
values.forEach(function(v) { | |
count += v['count']; | |
}); | |
return {count: count}; | |
} | |
db.logs.mapReduce(map, reduce, {out: "log_results"}); |
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