HashCache (Apache Jackrabbit 2.23.1-beta API)

java.lang.Object
- org.apache.jackrabbit.spi.commons.name.HashCache<T>

```
public class HashCache<T>
extends Object
```
Simple utility class that implements a fixed-size and thread-safe (non-blocking) cache of objects. The cache is simply an array of objects, indexed by their hash codes. If more than one objects hash to the same location, only the most recently accessed object is kept in the cache.

See Also:

JCR-1663

- Constructor Summary
  
  Constructors
  Constructor Description
  
  HashCache()
  Creates a hash cache with 1024 slots.
  
  HashCache(int exponent)
  Creates a hash cache with 2^exponent slots.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  T get(T object)
  If a cached copy of the given object already exists, then returns that copy.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HashCache
```
public HashCache()
```
    Creates a hash cache with 1024 slots.
  - HashCache
```
public HashCache(int exponent)
```
    Creates a hash cache with 2^exponent slots.
    
    Parameters:
    
    exponent - the exponent.
- Method Detail
  - get
```
public T get(T object)
```
    If a cached copy of the given object already exists, then returns that copy. Otherwise the given object is cached and returned.
    
    Parameters:
    
    object - object to return from the cache
    
    Returns:
    
    the given object or a previously cached copy