Implements org.springframework.cache.Cache.clear.

Doc from org.springframework.cache.Cache.clear.

Clear the cache through removing all mappings.

Actual clearing may be performed in an asynchronous or deferred fashion, with subsequent lookups possibly still seeing the entries. This may for example be the case with transactional cache decorators. Use invalidate() for guaranteed immediate removal of entries.

If the cache is supposed to be compatible with CompletableFuture and reactive interactions, the clear operation needs to be effectively non-blocking, with any backend write-through happening asynchronously. This goes along with a cache implemented and configured to support retrieve(Object) and retrieve(Object, Supplier).

Annotations

@Override

Implements org.springframework.cache.Cache.evict.

Doc from org.springframework.cache.Cache.evict.

Evict the mapping for this key from this cache if it is present.

Actual eviction may be performed in an asynchronous or deferred fashion, with subsequent lookups possibly still seeing the entry. This may for example be the case with transactional cache decorators. Use evictIfPresent for guaranteed immediate removal.

If the cache is supposed to be compatible with CompletableFuture and reactive interactions, the evict operation needs to be effectively non-blocking, with any backend write-through happening asynchronously. This goes along with a cache implemented and configured to support retrieve(Object) and retrieve(Object, Supplier).

Parameters

key:Object

the key whose mapping is to be removed from the cache

Annotations

@Override

Overrides default org.springframework.cache.Cache.evictIfPresent.

Doc from org.springframework.cache.Cache.evictIfPresent.

Evict the mapping for this key from this cache if it is present, expecting the key to be immediately invisible for subsequent lookups.

The default implementation delegates to evict(Object), returning false for not-determined prior presence of the key. Cache providers and in particular cache decorators are encouraged to perform immediate eviction if possible (e.g. in case of generally deferred cache operations within a transaction) and to reliably determine prior presence of the given key.

Parameters

key:Object

the key whose mapping is to be removed from the cache

Returns:boolean

true if the cache was known to have a mapping for this key before, false if it did not (or if prior presence could not be determined)

Annotations

@Override

Implements org.springframework.cache.Cache.get.

Doc from org.springframework.cache.Cache.get.

Return the value to which this cache maps the specified key, obtaining that value from valueLoader if necessary. This method provides a simple substitute for the conventional "if cached, return; otherwise create, cache and return" pattern.

If possible, implementations should ensure that the loading operation is synchronized so that the specified valueLoader is only called once in case of concurrent access on the same key.

If the valueLoader throws an exception, it is wrapped in a ValueRetrievalException

Parameters

key:Object

the key whose associated value is to be returned

Returns:T

the value to which this cache maps the specified key

Annotations

@Override

@Nullable

@SuppressWarnings:unchecked

Implements org.springframework.cache.Cache.getName.

Doc from org.springframework.cache.Cache.getName.

Return the cache name.

Annotations

@Override

Implements org.springframework.cache.Cache.getNativeCache.

Doc from org.springframework.cache.Cache.getNativeCache.

Return the underlying native cache provider.

Annotations

@Override

Overrides default org.springframework.cache.Cache.invalidate.

Doc from org.springframework.cache.Cache.invalidate.

Invalidate the cache through removing all mappings, expecting all entries to be immediately invisible for subsequent lookups.

Returns:boolean

true if the cache was known to have mappings before, false if it did not (or if prior presence of entries could not be determined)

Annotations

@Override

Implements org.springframework.cache.Cache.put.

Doc from org.springframework.cache.Cache.put.

Associate the specified value with the specified key in this cache.

If the cache previously contained a mapping for this key, the old value is replaced by the specified value.

Actual registration may be performed in an asynchronous or deferred fashion, with subsequent lookups possibly not seeing the entry yet. This may for example be the case with transactional cache decorators. Use putIfAbsent for guaranteed immediate registration.

If the cache is supposed to be compatible with CompletableFuture and reactive interactions, the put operation needs to be effectively non-blocking, with any backend write-through happening asynchronously. This goes along with a cache implemented and configured to support retrieve(Object) and retrieve(Object, Supplier).

Parameters

key:Object

the key with which the specified value is to be associated

value:Object

the value to be associated with the specified key

Annotations

@Override

Overrides default org.springframework.cache.Cache.putIfAbsent.

Doc from org.springframework.cache.Cache.putIfAbsent.

Atomically associate the specified value with the specified key in this cache if it is not set already.

This is equivalent to:

ValueWrapper existingValue = cache.get(key);
if (existingValue == null) {
    cache.put(key, value);
}
return existingValue;

The default implementation delegates to get(Object) and put(Object, Object) along the lines of the code snippet above.

Parameters

key:Object

the key with which the specified value is to be associated

value:Object

the value to be associated with the specified key

Returns:Cache.ValueWrapper

the value to which this cache maps the specified key (which may be null itself), or also null if the cache did not contain any mapping for that key prior to this call. Returning null is therefore an indicator that the given value has been associated with the key.

Annotations

@Override

@Nullable