HashCache (Apache BookKeeper :: Parent 4.18.0-SNAPSHOT API)

```
public interface HashCache
```
Interface implemented by hash function caches.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Hash`	`get(HashParameters params, java.util.EnumSet<HashSupport> required, java.util.concurrent.Callable<Hash> loader)`	Requests a cached hash function with the given parameters and required support flags.

- Method Detail
  - get
```
Hash get(HashParameters params,
         java.util.EnumSet<HashSupport> required,
         java.util.concurrent.Callable<Hash> loader)
  throws java.util.concurrent.ExecutionException
```
    Requests a cached hash function with the given parameters and required support flags. If no matching function is cached, the given loader is called to obtain one to cache.
    
    Parameters:
    
    params - the hash algorithm parameters
    
    required - the required hash support flags
    
    loader - a cache loader that creates the function if not cached
    
    Returns:
    
    a hash with the given parameters and support flags
    
    Throws:
    
    java.util.concurrent.ExecutionException - if the loader throws an exception