mongodblistscalacasbah

Find query result to List

I have got a database filled with documents like the following :

{
    "_id" : ObjectId("56zeffb2abcf7ff24b46"),
    "id_thing" : -1,
    "data" : {
        "info1" : 36.0709427,
        "date" : ISODate('2005-11-01T00:33:21.987+07:00'),
        "info2" : 24563.87148077
    }
}

My find method returns a List which I operate some operations over:

for (d <- result_of_find_method_here)
{
    val l_d = d("data")
}

But I would like to l_d a List which is currently not, and the toList method does not work.

How do I retrieve all the fields and their value of the data container as a list?

EDIT:

I have tried multiple methods, and none work because neither applies to AnyRef which is what I get when I iterate through the l_d with a foreach loop.

Solution

  • Find method returns a list because there are more objects returned. l_d is not a list, because d['data'] is not a list is a key value store: a dictionary, json or map in Scala. The question is how do you want to represent this data? Maybe you want to take out the values from the map as a list.

    You can convert map to list using: l_d.toList or map values to list: l_d.values.toList