Escuelita de Scala - Parte 4b - mongodb with casbah

gistfile1.scala

package services

import com.mongodb.casbah.Imports._
import com.mongodb.casbah.commons.conversions.scala._
import com.mongodb._
import com.mongodb.ServerAddress
import com.mongodb.util._
import scalaj.collection.s2j._

abstract trait RegpubDataUtil {
    protected def getDocumentByFicha(ficha:String):String
}


trait DataModelService extends RegpubDataUtil {
    val mongoCollection = MongoConnection()("webdata")("regpub")

    protected def getDocumentByFicha(ficha:String):String = {
// RM: Indexamos ficha, primera vez que se ejecuta indexa y toma un tiempo en completar
        mongoCollection.ensureIndex("ficha")
        val cursor = mongoCollection.find(MongoDBObject("ficha" -> ficha))
// RM: Scala If statements are expressions , using Options to avoid try/catch
        val document = if ( cursor.hasNext ) Some(cursor.next.asDBObject) else None
        if ( document.isDefined )
        {
            JSON.serialize(document)
        } else {
            "{}"
        }
    }

}