Question

I am querying a Mongo DB in Scala and looping through the returned elements, that look like this:

{ "_id" : "123:1350918540586068000:v" , 
    "i" : { 
        "vendorStyle" : "coolStyle" , 
        "createdAt" : 1350918540580 , 
        "productId" : "product123" , 
        "skuId" : "123"
    }
}

My question is: how do I retrieve the value from skuId? I know you can use the notation parent.child in the ‘find’ method in Mongo, but that doesn’t work when reading from the resulting DBObject

This is the code:

val elems = SkuStorage.collection.find(MongoDBObject("i.productId" -> productId))
elems.toSeq.map { element=>
    readSkuById(element.get("i.skuId")) //breaks! 
}

Do I need to go get(“i”) then parse the string into a JSON? Is there any better way of handling this?

Answer 1

You could try

element.expand[String]("i.skuId")

it returns Option[String]