org.apache.carbondata.datamap.bloom

Class BloomDataMapCache

java.lang.Object

org.apache.carbondata.datamap.bloom.BloomDataMapCache

All Implemented Interfaces:

Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

@InterfaceAudience.Internal
public class BloomDataMapCache
extends Object
implements Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

This class is used to add cache for bloomfilter datamap to accelerate query through it. The cache is implemented using carbon lru cache. As for the cache, the key is a bloomindex file for a shard and the value is the bloomfilters for the blocklets in this shard.

Constructor Summary

Constructors

Constructor and Description
BloomDataMapCache(CarbonLRUCache lruCache)

Method Summary

Modifier and Type	Method and Description
void	clearAccessCount(List<BloomCacheKeyValue.CacheKey> keys)
BloomCacheKeyValue.CacheValue	get(BloomCacheKeyValue.CacheKey key)
List<BloomCacheKeyValue.CacheValue>	getAll(List<BloomCacheKeyValue.CacheKey> keys)
BloomCacheKeyValue.CacheValue	getIfPresent(BloomCacheKeyValue.CacheKey key)
void	invalidate(BloomCacheKeyValue.CacheKey key)
void	put(BloomCacheKeyValue.CacheKey key, BloomCacheKeyValue.CacheValue value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BloomDataMapCache

public BloomDataMapCache(CarbonLRUCache lruCache)

Method Detail

get

public BloomCacheKeyValue.CacheValue get(BloomCacheKeyValue.CacheKey key)
                                  throws IOException

Specified by:

get in interface Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

Throws:

IOException

getAll

public List<BloomCacheKeyValue.CacheValue> getAll(List<BloomCacheKeyValue.CacheKey> keys)
                                           throws IOException

Specified by:

getAll in interface Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

Throws:

IOException

getIfPresent

public BloomCacheKeyValue.CacheValue getIfPresent(BloomCacheKeyValue.CacheKey key)

Specified by:

getIfPresent in interface Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

invalidate

public void invalidate(BloomCacheKeyValue.CacheKey key)

Specified by:

invalidate in interface Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

put

public void put(BloomCacheKeyValue.CacheKey key,
                BloomCacheKeyValue.CacheValue value)
         throws IOException,
                MemoryException

Specified by:

put in interface Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>

Throws:

IOException

MemoryException

clearAccessCount

public void clearAccessCount(List<BloomCacheKeyValue.CacheKey> keys)

Specified by:

clearAccessCount in interface Cache<BloomCacheKeyValue.CacheKey,BloomCacheKeyValue.CacheValue>