StmObjAttrMapCellView
final
class StmObjAttrMapCellView[T <: Txn[T]](attr0: AttrMap[T], key: String, tx0: T)(implicit context: Context[T]) extends CellView[T, Option[Obj[T]]]
A CellView[T, Option[LObj[T]] built from an LObj.attr.
This is very similar to StmObjCtxCellView, which is built for a context
attribute map, but the two classes have to be distinguished
because LObj.AttrMap must be put into a handle, and because this
forms a special case when used instead an LObj expression.
Depending on the kind of context passed, this will transparently install event
reactors or simply register the events used in the expression program.
trait Source[T, Option[Obj[T]]]
trait Observable[T, Option[Obj[T]]]
class Object
trait Matchable
class Any