Close Connection for Mongodb using Casbah API

Question

I am not getting any useful information about "how to close connection for mongodb using casbah API". Actually, I have defined multiple methods and in each method I need to establish a connection with mongodb. After working I need to close that too. I am using Scala.

one of the method like (code example in scala):

import com.mongodb.casbah.Imports._
import com.mongodb.casbah.MongoConnection

def index ={
  val mongoConn = MongoConnection(configuration("hostname"))
  val log = mongoConn("ab")("log")
  val cursor = log.find()
  val data = for {x <- cursor} yield x.getAs[BasicDBObject]("message").get
  html.index(data.toList)
  //mongoConn.close()  <-- here i want to close the connection but this .close() is not working
}

om-nom-nom · Accepted Answer · 2012-02-15T16:21:32.950

2

It is unclear, from your question why exactly close is not working. Does it throw some exception, it is not compiling, or has no effect? But since MongoConnection is a thin wrapper over com.mongodb.Mongo, you could work with underlying Mongo directly, just like in plain old Java driver:

val mongoConn = MongoConnection(configuration("hostname"))
mongoConn.underlying.close()

Actually, that's exactly, how close is implemented in casbah.

edited Feb 15 '12 at 16:21

answered Feb 15 '12 at 16:11

om-nom-nom

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thanks , its working.(I am new here so i cant vote up [:(] ). – skg Feb 16 '12 at 08:50

score 0 · Answer 2 · edited May 23 '17 at 12:32

0

Try using .close instead. If a function doesn't have arguments in scala, you sometimes don't use parentheses after it.

EDIT: I had wrong information, edited to include correct information + link.

edited May 23 '17 at 12:32

Community

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answered Feb 15 '12 at 16:07

nnythm

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Actually, it is better to use parentheses sometimes - e.g. if function you're calling has side effects (and `.close()` here is definitely has them). – om-nom-nom Feb 15 '12 at 16:13
my question is *how exactly it is not working?*, e.g. what is the problem? – om-nom-nom Feb 15 '12 at 16:23
hmm, indeed, trying it in my local console it works out fine. – nnythm Feb 15 '12 at 18:44

Close Connection for Mongodb using Casbah API

2 Answers2