Package com.aspectran.utils.cache

Interface Cache<K,V>

Type Parameters:
K - the type of keys
V - the type of mapped values
All Known Implementing Classes:
ConcurrentLruCache, ConcurrentReferenceCache
public interface Cache<K,V>
A Map-like data structure that stores key-value pairs and provides temporary access to it.
Since:
6.6.7

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    clear()
    Removes all of the elements from this cache.
    V
    get(K key)
    Gets an entry from the cache.
    boolean
    isEmpty()
    Returns true if this cache contains no key-value mappings.
    Set<K>
    keySet()
    Returns a Set view of the keys contained in this cache.
    void
    remove(K key)
    Removes the specified element from this cache if it is present.
    int
    size()
    Returns the number of elements in this cache.

  • Method Details

    • get

      V get(K key)
      Gets an entry from the cache.
      Parameters:
      key - the key whose associated value is to be returned
      Returns:
      the element, or null, if it does not exist

    • remove

      void remove(K key)
      Removes the specified element from this cache if it is present.
      Parameters:
      key - key with which the specified value is to be associated

    • clear

      void clear()
      Removes all of the elements from this cache.

    • keySet

      Set<K> keySet()
      Returns a Set view of the keys contained in this cache.
      Returns:
      the set view

    • size

      int size()
      Returns the number of elements in this cache.
      Returns:
      the number of elements in this cache

    • isEmpty

      boolean isEmpty()
      Returns true if this cache contains no key-value mappings.
      Returns:
      true if this cache contains no key-value mappings