Scala Example

import com.mongodb.casbah.Imports._

class Report(builder: ReportBuilder) {
var result = builder.result

def save = {
val mongoObj = buildMongoDbObject
MongoFactory.getCollection(MongoFactory.getConnection).save(mongoObj)
}

def buildMongoDbObject: MongoDBObject = {
val builder = MongoDBObject.newBuilder
builder += "result" -> this.result
builder += "_id" -> "report"
builder.result
}
}


object Report {
def newBuilder: ReportBuilder = new ReportBuilder()
}


class ReportBuilder{
var result: Boolean = true

def setResult(result:Boolean): ReportBuilder = {
this.result = result
this
}

def build: Report = new Report(this)
}