Class CacheFIFO2

  • All Implemented Interfaces:
    java.io.Serializable, Cache

    public final class CacheFIFO2
    extends GenericCache
    This class is a GenericCache subclass implementing a second chance FIFO (First In First Out) cache replacement policy. In other words, values are added to the cache until the cache becomes full. Once the cache is full, when a new value is added to the cache, it replaces the first of the current values in the cache to have been added, unless that value has been used recently (generally between the last cache replacement and now). If the value to be replaced has been used, it is given a second chance, and the next value in the cache is tested for replacement in the same manner. If all the values are given a second chance, then the original pattern selected for replacement is replaced.
    Since:
    1.0
    Version:
    2.0.8
    See Also:
    GenericCache, Serialized Form
    • Constructor Summary

      Constructors 
      Constructor Description
      CacheFIFO2()
      Same as:
      CacheFIFO2​(int capacity)
      Creates a CacheFIFO2 instance with a given cache capacity.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addElement​(java.lang.Object key, java.lang.Object value)
      Adds a value to the cache.
      java.lang.Object getElement​(java.lang.Object key)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • CacheFIFO2

        public CacheFIFO2​(int capacity)
        Creates a CacheFIFO2 instance with a given cache capacity.

        Parameters:
        capacity - The capacity of the cache.
      • CacheFIFO2

        public CacheFIFO2()
        Same as:
         CacheFIFO2(GenericCache.DEFAULT_CAPACITY);
         
    • Method Detail

      • addElement

        public final void addElement​(java.lang.Object key,
                                     java.lang.Object value)
        Adds a value to the cache. If the cache is full, when a new value is added to the cache, it replaces the first of the current values in the cache to have been added (i.e., FIFO2).

        Specified by:
        addElement in interface Cache
        Specified by:
        addElement in class GenericCache
        Parameters:
        key - The key referencing the value added to the cache.
        value - The value to add to the cache.