gistfile1.txt

package snippets

object DIExamples {

	/*
	 * http://jonasboner.com/2008/10/06/real-world-scala-dependency-injection-di.html
	 * http://debasishg.blogspot.com/2011/03/pushing-envelope-on-oo-and-functional.html
	 * http://www.assembla.com/wiki/show/liftweb/Dependency_Injection
	 */
	
	case class Account(id:String, balance:Double)

	def ??? = throw new Error("not implemented yet")
	
	trait Dao[T] {
		
		def findById(id:String):T		
		def save(t:T)
	}
	
	trait AccountService {
		def findAccountById(id:String):Account
		
		/** 
		 * Check for sufficient balance and perform transfer
		 */
		def transfer(from:Account, to:Account, amount:Double):(Account, Account)			
	}

	
	class Client {
		
		val accountService:AccountService = ???
		
		def performTransfer() = {
			val a1 = accountService.findAccountById("1.A")
			val a2 = accountService.findAccountById("2.B")
			accountService.transfer(a1, a2, 1000)			
		}		
	}
}

Guys, take a look at http://skillsmatter.com/podcast/scala/how-we-mostly-moved-from-java-to-scala