Class History

java.lang.Object
org.aksw.commons.util.history.History
public class History extends Object
A simple history object that is backed by a list of Callable instances. Invoking a callable is expected to update the state appropriately. Going back to memento x and then adding a new memento y first clears all mementos past x.

  • Field Details

    • mementos

      protected List<Callable<?>> mementos

    • currentPosition

      protected int currentPosition

  • Constructor Details

    • History

      public History()

  • Method Details

    • addMemento

      public void addMemento(Runnable memento)

    • addMemento

      public void addMemento(Callable<?> memento)

    • reset

      public void reset()

    • canDoBackward

      public boolean canDoBackward()

    • canDoForward

      public boolean canDoForward()

    • backward

      protected Callable<?> backward()

    • doBackward

      public boolean doBackward()

    • doFoward

      public boolean doFoward()

    • forward

      protected Callable<?> forward()

    • isEmpty

      public boolean isEmpty()

    • size

      public int size()