org.apache.ignite.internal.processors.cache

Interface GridCacheConcurrentMap

All Known Implementing Classes:

GridCacheConcurrentMapImpl, GridCacheLocalConcurrentMap, GridCachePartitionedConcurrentMap, GridDhtLocalPartition, GridNoStorageCacheMap

public interface GridCacheConcurrentMap

Concurrent cache map.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	GridCacheConcurrentMap.CacheMapHolder

Method Summary

Modifier and Type	Method and Description
void	decrementPublicSize(GridCacheConcurrentMap.CacheMapHolder hld, GridCacheEntryEx e) Decrements public size.
Iterable<GridCacheMapEntry>	entries(int cacheId, CacheEntryPredicate... filter)
Set<GridCacheMapEntry>	entrySet(int cacheId, CacheEntryPredicate... filter)
GridCacheMapEntry	getEntry(GridCacheContext ctx, KeyCacheObject key) Returns the entry associated with the specified key in the HashMap.
void	incrementPublicSize(GridCacheConcurrentMap.CacheMapHolder hld, GridCacheEntryEx e) Increments public size.
int	internalSize() Returns the number of key-value mappings in this map.
int	publicSize(int cacheId) Returns the number of publicly available key-value mappings in this map.
GridCacheMapEntry	putEntryIfObsoleteOrAbsent(GridCacheContext ctx, AffinityTopologyVersion topVer, KeyCacheObject key, boolean create, boolean touch)
boolean	removeEntry(GridCacheEntryEx entry) Removes passed in entry if it presents in the map.

Method Detail

getEntry

@Nullable
GridCacheMapEntry getEntry(GridCacheContext ctx,
                                     KeyCacheObject key)

Returns the entry associated with the specified key in the HashMap. Returns null if the HashMap contains no mapping for this key.

Parameters:

ctx - Cache context.

key - Key.

Returns:

Entry.

putEntryIfObsoleteOrAbsent

@Nullable
GridCacheMapEntry putEntryIfObsoleteOrAbsent(GridCacheContext ctx,
                                                       AffinityTopologyVersion topVer,
                                                       KeyCacheObject key,
                                                       boolean create,
                                                       boolean touch)

Parameters:

ctx - Cache context.

topVer - Topology version.

key - Key.

create - Create flag.

Returns:

Existing or new GridCacheMapEntry. Will return null if entry is obsolete or absent and create flag is set to false. Will also return null if create flag is set to true, but entry couldn't be created.

removeEntry

boolean removeEntry(GridCacheEntryEx entry)

Removes passed in entry if it presents in the map.

Parameters:

entry - Entry to remove.

Returns:

True if remove happened.

internalSize

int internalSize()

Returns the number of key-value mappings in this map. It does not include entries from underlying data store.

Returns:

the number of key-value mappings in this map.

publicSize

int publicSize(int cacheId)

Returns the number of publicly available key-value mappings in this map. It excludes entries that are marked as deleted. It also does not include entries from underlying data store.

Parameters:

cacheId - Cache ID.

Returns:

the number of publicly available key-value mappings in this map.

incrementPublicSize

void incrementPublicSize(@Nullable
                         GridCacheConcurrentMap.CacheMapHolder hld,
                         GridCacheEntryEx e)

Increments public size.

Parameters:

e - Entry that caused public size change.

hld - Cache map (passed as optimization to avoid cache map lookup for shared groups).

decrementPublicSize

void decrementPublicSize(@Nullable
                         GridCacheConcurrentMap.CacheMapHolder hld,
                         GridCacheEntryEx e)

Decrements public size.

Parameters:

e - Entry that caused public size change.

hld - Cache map (passed as optimization to avoid cache map lookup for shared groups).

entries

Iterable<GridCacheMapEntry> entries(int cacheId,
                                    CacheEntryPredicate... filter)

Parameters:

cacheId - Cache ID.

filter - Filter.

Returns:

Iterable of the mappings contained in this map, excluding entries in unvisitable state.

entrySet

Set<GridCacheMapEntry> entrySet(int cacheId,
                                CacheEntryPredicate... filter)

Parameters:

cacheId - Cache ID.

filter - Filter.

Returns:

Set of the mappings contained in this map.