http://labix.org/mgo

Here is a list of changes in this release:

- Comfortable support for MapReduce was implemented.

  This trivial example will count the number of occurrences of a
  field named n on each document in a collection, and will
  return results inline:

      job := mgo.MapReduce{
          Map:    "function() { emit(this.n, 1) }",
          Reduce: "function(key, values) { return Array.sum(values) }",
      }
      var result []struct { Id int "_id"; Value int }
      _, err := collection.Find(nil).MapReduce(job, &result)
      if err != nil {
          panic(err)
      }
      for _, item := range result {
          fmt.Println(item.Value)
      }

  For more details, check the documentation:

      http://goneat.org/lp/mgo#Query.MapReduce
      http://goneat.org/lp/mgo#MapReduce
      http://goneat.org/lp/mgo#MapReduceInfo

- New Distinct method for querying collections for distinct values:

      http://goneat.org/lp/mgo#Query.Distinct

- After feedback and debate in the mailing list, gobson will again
  marshal (u)int64 values as int64 MongoDB values, even if they
  would fit in an int32 value for storage. But then:

- gobson now supports a "/s" suffix in struct fields, and will
  conditionally marshal int64 values in these fields in the
  shortest possible space.

- New gobson Raw.Unmarshal function for unmarshalling individual
  elements of a document lazily and conditionally:

      http://goneat.org/lp/gobson/bson#Raw.Unmarshal

--
Gustavo Niemeyer
http://niemeyer.net
http://niemeyer.net/blog
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