CacheEntry (cache2k API 1.9.3.Alpha API)

All Superinterfaces:

DataAware<K,V>

All Known Subinterfaces:

LoadExceptionInfo<K,V>, MutableCacheEntry<K,V>
```
public interface CacheEntry<K,V>
extends DataAware<K,V>
```
Object representing a cache entry. With the cache entry, it can be checked whether a mapping in the cache is present, even if the cache contains null or contains an exception. Entries can be retrieved by Cache.peekEntry(Object) or Cache.getEntry(Object) or via iterated via Cache.entries().
After retrieved, the entry instance does not change its values, even if the value for its key is updated in the cache.
Design note: The cache is generally also aware of the time the object will be refreshed next or when it will expire. This is not exposed to applications by intention.

Author:

Jens Wilke

See Also:

Cache.peekEntry(Object), Cache.getEntry(Object), Cache.entries()

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default @Nullable Throwable`	`getException()`	The exception happened when the value was loaded and the exception could not be suppressed.
`@Nullable LoadExceptionInfo<K,V>`	`getExceptionInfo()`	Detailed information of latest exception from the loader or `null` if no exception happened or it was suppressed.
`K`	`getKey()`	Key associated with this entry.
`V`	`getValue()`	Value of the entry.

- Method Detail
  - getKey
```
K getKey()
```
    Key associated with this entry.
  - getValue
```
V getValue()
```
    Value of the entry. The value may be null if permitted for this cache via Cache2kBuilder.permitNullValues(boolean). If the entry had a loader exception which is not suppressed, this exception will be propagated. This can be customized with Cache2kBuilder.exceptionPropagator(ExceptionPropagator)
    For usage within the EntryProcessor: If a loader is present and the entry is not yet loaded or expired, a load is triggered. See the details at: MutableCacheEntry.getValue()
    
    Throws:
    
    CacheLoaderException - if loading produced an exception
  - getException
```
default @Nullable Throwable getException()
```
    The exception happened when the value was loaded and the exception could not be suppressed. null if no exception happened or it was suppressed. If null then getValue() returns a value and does not throw an exception.
  - getExceptionInfo
```
@Nullable LoadExceptionInfo<K,V> getExceptionInfo()
```
    Detailed information of latest exception from the loader or null if no exception happened or it was suppressed. If null then getValue() returns a value and does not throw an exception.