Package org.camunda.commons.utils.cache

Interface Cache<K,V>

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

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    clear()
    Clears the contents of the 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
    put(K key, V value)
    Associates the specified value with the specified key in the cache.
    void
    remove(K key)
    Removes an entry from the cache.
    int
    size()
     

  • 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.

    • put

      void put(K key, V value)
      Associates the specified value with the specified key in the cache.
      Parameters:
      key - key with which the specified value is to be associated
      value - value to be associated with the specified key
      Throws:
      NullPointerException - if key is null or if value is null

    • clear

      void clear()
      Clears the contents of the cache.

    • remove

      void remove(K key)
      Removes an entry from the cache.
      Parameters:
      key - key with which the specified value is to be associated.

    • keySet

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

    • size

      int size()
      Returns:
      the current size of the cache

    • isEmpty

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