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

Interface BlockCache.Loader

Enclosing interface:

BlockCache

public static interface BlockCache.Loader

Method Summary

Modifier and Type	Method	Description
Map<String,BlockCache.Loader>	getDependencies()	The cache blocks that this loader depends on.
byte[]	load(int maxSize, Map<String,byte[]> dependencies)	Loads a block.

Method Details

getDependencies

Map<String,BlockCache.Loader> getDependencies()

The cache blocks that this loader depends on. If a loader has no dependencies, then it should return an empty map. All dependencies must be loaded before calling load(int, Map).

load

byte[] load(int maxSize,
 Map<String,byte[]> dependencies)

Loads a block. Anything returned by getDependencies() should be loaded and passed.

Parameters:

maxSize - This is the maximum block size that will be cached.

Returns:

The loaded block or null if loading the block would exceed maxSize.