Package org.apache.accumulo.core.spi.cache

Interface CacheEntry

public interface CacheEntry

Since:

2.0.0

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	CacheEntry.Weighable

Method Summary

Modifier and Type	Method	Description
byte[]	getBuffer()
<T extends CacheEntry.Weighable> T	getIndex(Supplier<T> supplier)	Optionally cache what is returned by the supplier along with this cache entry.
void	indexWeightChanged()	The object optionally stored by getIndex(Supplier) is a mutable object.

Method Details

getBuffer

byte[] getBuffer()

getIndex

<T extends CacheEntry.Weighable> T getIndex(Supplier<T> supplier)

Optionally cache what is returned by the supplier along with this cache entry. If caching what is returned by the supplier is not supported, its ok to return null.

This method exists to support building indexes of frequently accessed cached data.

indexWeightChanged

void indexWeightChanged()

The object optionally stored by getIndex(Supplier) is a mutable object. Accumulo will call this method whenever the weight of that object changes.