Interface DFItem.Handle<T extends DFItem>

  • Enclosing interface:

    public static interface DFItem.Handle<T extends DFItem>
    Represents a handle-like identifier of the item. Since the Item's ID may not be unique (e.g. when a Schema was replicated/copied), an additional context must be kept in order to uniquely identify DFItems across DFSchemas. Handle encapsulates such a context, but does not expose its details. The Handle is implemented so that equals() and hashCode() satisfy the equals/comparator contracts. It does not keep the original DFItem alive - a Reference is used to track the instance. Note that Handle is not serializable. The DFItem cannot be identified by a Handle instance across application runs. The Handle can be used instead of the DFItem in various lookup Maps.
    • Method Detail

      • getId

        java.lang.Object getId()
        The ID of the original DFItem
      • getInstance

        T getInstance()
        Returns the original DFItem instance. May return null if the item was already garbage-collected.
        The instance of the original DFItem, or null if the DFItem is gone.