MemoizeCache (Groovy 2.5.6)

Type Parameters:

K - type of the keys

V - type of the values

All Known Subinterfaces:

EvictableCache<K,V>

All Known Implementing Classes:

CommonCache, ConcurrentCommonCache, ConcurrentSoftCache, LRUCache, UnlimitedConcurrentCache
```
public interface MemoizeCache<K,V>
```
Represents a memoize cache with its essential methods

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface MemoizeCache.ValueProvider<K,V>
Represents a provider used to create value

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`cleanUpNullReferences()`	Invoked when some of the held SoftReferences have been evicted by the garbage collector and so should be removed from the cache.
`V`	`get(K key)`	Gets a value from the cache
`V`	`getAndPut(K key, MemoizeCache.ValueProvider<? super K,? extends V> valueProvider)`	Try to get the value from cache.
`V`	`put(K key, V value)`	Associates the specified value with the specified key in the cache.

- Method Detail
  - put
```
V 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
    
    Returns:
    
    null, or the old value if the key associated with the specified key.
  - get
```
V get(K key)
```
    Gets a value from the cache
    
    Parameters:
    
    key - the key whose associated value is to be returned
    
    Returns:
    
    the value, or null, if it does not exist.
  - getAndPut
```
V getAndPut(K key,
            MemoizeCache.ValueProvider<? super K,? extends V> valueProvider)
```
    Try to get the value from cache. If not found, create the value by MemoizeCache.ValueProvider and put it into the cache, at last return the value
    
    Parameters:
    
    key -
    
    Returns:
    
    the cached value
  - cleanUpNullReferences
```
void cleanUpNullReferences()
```
    Invoked when some of the held SoftReferences have been evicted by the garbage collector and so should be removed from the cache. The implementation must ensure that concurrent invocations of all methods on the cache may occur from other threads and thus should protect any shared resources.