StrongCacheStorage (FreeMarker 2.3.31 API)

java.lang.Object
- freemarker.cache.StrongCacheStorage

All Implemented Interfaces:

CacheStorage, CacheStorageWithGetSize, ConcurrentCacheStorage
```
public class StrongCacheStorage
extends java.lang.Object
implements ConcurrentCacheStorage, CacheStorageWithGetSize
```
Strong cache storage is a cache storage that simply wraps a Map. It holds a strong reference to all objects it was passed, therefore prevents the cache from being purged during garbage collection. This class is always thread-safe since 2.3.24, before that if we are running on Java 5 or later.

See Also:

Configuration.setCacheStorage(CacheStorage)

Constructor Summary

Constructors
Constructor Description

StrongCacheStorage()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`
`java.lang.Object`	`get(java.lang.Object key)`
`int`	`getSize()`	Returns a close approximation of the number of cache entries.
`boolean`	`isConcurrent()`	Always returns `true`.
`void`	`put(java.lang.Object key, java.lang.Object value)`
`void`	`remove(java.lang.Object key)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StrongCacheStorage
```
public StrongCacheStorage()
```
- Method Detail
  - isConcurrent
```
public boolean isConcurrent()
```
    Always returns true.
    
    Specified by:
    
    isConcurrent in interface ConcurrentCacheStorage
    
    Returns:
    
    true if this instance of cache storage is concurrently accessible from multiple threads without synchronization.
  - get
```
public java.lang.Object get(java.lang.Object key)
```
    Specified by:
    
    get in interface CacheStorage
  - put
```
public void put(java.lang.Object key,
                java.lang.Object value)
```
    Specified by:
    
    put in interface CacheStorage
  - remove
```
public void remove(java.lang.Object key)
```
    Specified by:
    
    remove in interface CacheStorage
  - getSize
```
public int getSize()
```
    Returns a close approximation of the number of cache entries.
    
    Specified by:
    
    getSize in interface CacheStorageWithGetSize
    
    Since:
    
    2.3.21
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface CacheStorage