public class SoftCacheStorage extends java.lang.Object implements ConcurrentCacheStorage, CacheStorageWithGetSize
SoftReference
objects to hold the objects it was passed,
therefore allows the garbage collector to purge the cache when it determines that it wants to free up memory. This
class is thread-safe to the extent that its underlying map is. The parameterless constructor uses a thread-safe map
since 2.3.24 or Java 5.Constructor and Description |
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SoftCacheStorage()
Creates an instance that uses a
ConcurrentMap internally. |
SoftCacheStorage(java.util.Map backingMap) |
Modifier and Type | Method and Description |
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void |
clear() |
java.lang.Object |
get(java.lang.Object key) |
int |
getSize()
Returns a close approximation of the number of cache entries.
|
boolean |
isConcurrent()
Returns true if the underlying Map is a
ConcurrentMap . |
void |
put(java.lang.Object key,
java.lang.Object value) |
void |
remove(java.lang.Object key) |
public SoftCacheStorage()
ConcurrentMap
internally.public SoftCacheStorage(java.util.Map backingMap)
public boolean isConcurrent()
ConcurrentMap
.isConcurrent
in interface ConcurrentCacheStorage
public java.lang.Object get(java.lang.Object key)
get
in interface CacheStorage
public void put(java.lang.Object key, java.lang.Object value)
put
in interface CacheStorage
public void remove(java.lang.Object key)
remove
in interface CacheStorage
public void clear()
clear
in interface CacheStorage
public int getSize()
getSize
in interface CacheStorageWithGetSize