Package org.apache.wiki.util

Class TimedCounterList<T>

  • Type Parameters:
    T - The class you wish to store here
    All Implemented Interfaces:
    java.lang.Iterable<T>, java.util.Collection<T>, java.util.List<T>
    public class TimedCounterList<T>
extends java.util.AbstractList<T>
    Provides a List in which all items store their addition time. This can then be used to clean the list from old items.

    This class is thread-safe - all modifications are blocking, but reading is non-blocking (unless a write is ongoing).

    Since:
    2.8

    • Field Summary

      • Fields inherited from class java.util.AbstractList

        modCount

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(int index, T element)
      void cleanup​(long maxage)
      Performs a cleanup of all items older than maxage.
      int count​(T obj)
      Returns the count how many times this object is available in this list, using equals().
      T get​(int index)
      long getAddTime​(int index)
      Returns the time when this particular item was added on the list.
      T remove​(int index)
      T set​(int index, T element)
      int size()

      • Methods inherited from class java.util.AbstractList

        add, addAll, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, removeRange, subList

      • Methods inherited from class java.util.AbstractCollection

        addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.List

        addAll, contains, containsAll, isEmpty, remove, removeAll, replaceAll, retainAll, sort, spliterator, toArray, toArray

    • Method Detail

      • set

        public T set​(int index,
             T element)
        Specified by:
        set in interface java.util.List<T>
        Overrides:
        set in class java.util.AbstractList<T>

      • get

        public T get​(int index)
        Specified by:
        get in interface java.util.List<T>
        Specified by:
        get in class java.util.AbstractList<T>

      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<T>
        Specified by:
        size in interface java.util.List<T>
        Specified by:
        size in class java.util.AbstractCollection<T>

      • add

        public void add​(int index,
                T element)
        Specified by:
        add in interface java.util.List<T>
        Overrides:
        add in class java.util.AbstractList<T>

      • remove

        public T remove​(int index)
        Specified by:
        remove in interface java.util.List<T>
        Overrides:
        remove in class java.util.AbstractList<T>

      • count

        public int count​(T obj)
        Returns the count how many times this object is available in this list, using equals().
        Parameters:
        obj - The object to count.
        Returns:
        The count of the objects.

      • cleanup

        public void cleanup​(long maxage)
        Performs a cleanup of all items older than maxage.
        Parameters:
        maxage - The maximum age in milliseconds after an item is removed.

      • getAddTime

        public long getAddTime​(int index)
        Returns the time when this particular item was added on the list.
        Parameters:
        index - The index of the object.
        Returns:
        The addition time in milliseconds (@see System.currentTimeMillis()).