com.github.javaparser.resolution.cache

Class InMemoryCache<K,V>

java.lang.Object

com.github.javaparser.resolution.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.

Method Summary

Modifier and Type	Method and 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

Method Detail

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.