useful things for using db4o in scala, need to be reviewed

db4o.scala

implicit def toPredicate[T](predicate: T => Boolean) =
new Predicate[T]() {def `match`(entry: T): Boolean = {predicate(entry)}}


class RichObjectSet[T](objectSet:ObjectSet[T]) extends Iterator[T] {
def hasNext:Boolean =  objectSet.hasNext()
def next:T = objectSet.next()
}

implicit def toRichObjectSet[T](objectSet: ObjectSet[T] ) =
new RichObjectSet[T](objectSet)