org.apache.jackrabbit.oak.segment

Class WriterCacheManager.Default

java.lang.Object

org.apache.jackrabbit.oak.segment.WriterCacheManager

org.apache.jackrabbit.oak.segment.WriterCacheManager.Default

Enclosing class:

WriterCacheManager

public static class WriterCacheManager.Default
extends WriterCacheManager

This implementation of WriterCacheManager returns RecordCache instances for the string and template cache and NodeCache instance for the node cache.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.jackrabbit.oak.segment.WriterCacheManager

WriterCacheManager.Default, WriterCacheManager.Empty

Field Summary

Fields inherited from class org.apache.jackrabbit.oak.segment.WriterCacheManager

DEFAULT_NODE_CACHE_SIZE, DEFAULT_STRING_CACHE_SIZE, DEFAULT_TEMPLATE_CACHE_SIZE

Constructor Summary

Constructors

Constructor and Description
Default() New instance using the default factories RecordCache.factory(int) and PriorityCache.factory(int) with the sizes WriterCacheManager.DEFAULT_STRING_CACHE_SIZE, WriterCacheManager.DEFAULT_TEMPLATE_CACHE_SIZE and WriterCacheManager.DEFAULT_NODE_CACHE_SIZE.
Default(com.google.common.base.Supplier<RecordCache<String>> stringCacheFactory, com.google.common.base.Supplier<RecordCache<Template>> templateCacheFactory, com.google.common.base.Supplier<PriorityCache<String,RecordId>> nodeCacheFactory) New instance using the passed factories for creating cache instances.

Method Summary

Modifier and Type	Method and Description
static <T> com.google.common.base.Supplier<Long>	accumulateRecordCacheSizes(Iterable<RecordCache<T>> caches)
static <T> com.google.common.base.Supplier<Long>	accumulateRecordCacheWeights(Iterable<RecordCache<T>> caches)
protected void	evictCaches(com.google.common.base.Predicate<Integer> generations) Remove all cache generations matching the passed generations predicate.
NodeCache	getNodeCache(int generation)
String	getNodeCacheOccupancyInfo() Get occupancy information for the node deduplication cache indicating occupancy and evictions per priority.
org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean	getNodeCacheStats()
RecordCache<String>	getStringCache(int generation)
org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean	getStringCacheStats()
RecordCache<Template>	getTemplateCache(int generation)
org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean	getTemplateCacheStats()

Methods inherited from class java.lang.Object

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

Constructor Detail

Default

public Default(@Nonnull
               com.google.common.base.Supplier<RecordCache<String>> stringCacheFactory,
               @Nonnull
               com.google.common.base.Supplier<RecordCache<Template>> templateCacheFactory,
               @Nonnull
               com.google.common.base.Supplier<PriorityCache<String,RecordId>> nodeCacheFactory)

New instance using the passed factories for creating cache instances. The factories will be invoked exactly once when a generation of a cache is requested that has not been requested before.

Parameters:

stringCacheFactory - factory for the string cache

templateCacheFactory - factory for the template cache

nodeCacheFactory - factory for the node cache

Default

public Default()

New instance using the default factories RecordCache.factory(int) and PriorityCache.factory(int) with the sizes WriterCacheManager.DEFAULT_STRING_CACHE_SIZE, WriterCacheManager.DEFAULT_TEMPLATE_CACHE_SIZE and WriterCacheManager.DEFAULT_NODE_CACHE_SIZE.

Method Detail

getStringCache

@Nonnull
public RecordCache<String> getStringCache(int generation)

Specified by:

getStringCache in class WriterCacheManager

Returns:

cache for string records of the given generation.

getTemplateCache

@Nonnull
public RecordCache<Template> getTemplateCache(int generation)

Specified by:

getTemplateCache in class WriterCacheManager

Returns:

cache for template records of the given generation.

getNodeCache

@Nonnull
public NodeCache getNodeCache(int generation)

Specified by:

getNodeCache in class WriterCacheManager

Returns:

cache for node records of the given generation.

getStringCacheStats

@CheckForNull
public org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean getStringCacheStats()

Overrides:

getStringCacheStats in class WriterCacheManager

Returns:

statistics for the string cache or null if not available.

getTemplateCacheStats

@CheckForNull
public org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean getTemplateCacheStats()

Overrides:

getTemplateCacheStats in class WriterCacheManager

Returns:

statistics for the template cache or null if not available.

accumulateRecordCacheSizes

@Nonnull
public static <T> com.google.common.base.Supplier<Long> accumulateRecordCacheSizes(Iterable<RecordCache<T>> caches)

accumulateRecordCacheWeights

@Nonnull
public static <T> com.google.common.base.Supplier<Long> accumulateRecordCacheWeights(Iterable<RecordCache<T>> caches)

getNodeCacheStats

@CheckForNull
public org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean getNodeCacheStats()

Overrides:

getNodeCacheStats in class WriterCacheManager

Returns:

statistics for the node cache or null if not available.

getNodeCacheOccupancyInfo

public String getNodeCacheOccupancyInfo()

Description copied from class: WriterCacheManager

Get occupancy information for the node deduplication cache indicating occupancy and evictions per priority.

Overrides:

getNodeCacheOccupancyInfo in class WriterCacheManager

Returns:

occupancy information for the node deduplication cache.

evictCaches

protected final void evictCaches(com.google.common.base.Predicate<Integer> generations)

Remove all cache generations matching the passed generations predicate.

Parameters:

generations -