HttpCacheCASOperation

@Contract(threading=STATELESS)
public interface HttpCacheCASOperation

Atomic Compare-And-Swap (CAS) cache operation.

Since:: 5.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`HttpCacheEntry`	`execute(HttpCacheEntry existing)`	Returns the new cache entry that should replace an existing one.

- Method Detail
  - execute
```
HttpCacheEntry execute(HttpCacheEntry existing)
                throws ResourceIOException
```
    Returns the new cache entry that should replace an existing one.
    
    Parameters:
    
    existing - the cache entry currently in-place in the cache, possibly null if nonexistent
    
    Returns:
    
    the cache entry that should replace it, again, possibly null if the entry should be deleted
    
    Throws:
    
    ResourceIOException