Package com.github.javaparser.symbolsolver.cache

Class InMemoryCache<K,​V>

java.lang.Object
com.github.javaparser.symbolsolver.cache.InMemoryCache<K,​V>
Type Parameters:
K - The type of the key.
V - The type of the value.
All Implemented Interfaces:
Cache<K,​V>
public class InMemoryCache<K,​V> extends Object implements Cache<K,​V>
A cache implementation that stores the information in memory.
The current implementation stores the values in memory in a WeakHashMap.

  • Constructor Summary

    Constructors
    Constructor
    Description
    InMemoryCache()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    contains​(K key)
    Returns True if the cache contains a entry with the key, or False if there is none.
    static <expectedK,​ expectedV>
    InMemoryCache<expectedK,​expectedV>
    create()
    Create a new instance for a cache in memory.
    Optional<V>
    get​(K key)
    Returns the value associated with key in this cache, or empty if there is no cached value for key.
    boolean
    isEmpty()
    Returns True if the cache is empty, or False if there's at least a entry stored in cache.
    void
    put​(K key, V value)
    Associates value with key in this cache.
    void
    remove​(K key)
    Discards any cached value for this key.
    void
    removeAll()
    Discards all entries in the cache.
    long
    size()
    Returns the number of entries in this cache.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • InMemoryCache

      public InMemoryCache()

  • Method Details

    • create

      public static <expectedK,​ expectedV> InMemoryCache<expectedK,​expectedV> create()
      Create a new instance for a cache in memory.
      Type Parameters:
      expectedK - The expected type for the key.
      expectedV - The expected type for the value.
      Returns:
      A newly created instance of InMemoryCache.

    • put

      public void put​(K key, V value)
      Description copied from interface: Cache
      Associates value with key in this cache.
      If the cache previously contained a value associated with key, the old value is replaced by value.
      Specified by:
      put in interface Cache<K,​V>
      Parameters:
      key - The key to be used as index.
      value - The value to be stored.

    • get

      public Optional<V> get​(K key)
      Description copied from interface: Cache
      Returns the value associated with key in this cache, or empty if there is no cached value for key.
      Specified by:
      get in interface Cache<K,​V>
      Parameters:
      key - The key to look for.
      Returns:
      The value stored in cache if present.

    • remove

      public void remove​(K key)
      Description copied from interface: Cache
      Discards any cached value for this key.
      Specified by:
      remove in interface Cache<K,​V>
      Parameters:
      key - The key to be discarded.

    • removeAll

      public void removeAll()
      Description copied from interface: Cache
      Discards all entries in the cache.
      Specified by:
      removeAll in interface Cache<K,​V>

    • contains

      public boolean contains​(K key)
      Description copied from interface: Cache
      Returns True if the cache contains a entry with the key, or False if there is none.
      Specified by:
      contains in interface Cache<K,​V>
      Parameters:
      key - The key to be verified.
      Returns:
      True if the key is present.

    • size

      public long size()
      Description copied from interface: Cache
      Returns the number of entries in this cache.
      Specified by:
      size in interface Cache<K,​V>
      Returns:
      The cache size.

    • isEmpty

      public boolean isEmpty()
      Description copied from interface: Cache
      Returns True if the cache is empty, or False if there's at least a entry stored in cache.
      Specified by:
      isEmpty in interface Cache<K,​V>
      Returns:
      True if is empty.