org.apache.ignite.internal.processors.cache.distributed.dht

Class GridNoStorageCacheMap<K,V>

java.lang.Object

org.apache.ignite.internal.processors.cache.GridCacheConcurrentMap<K,V>

org.apache.ignite.internal.processors.cache.distributed.dht.GridNoStorageCacheMap<K,V>

public class GridNoStorageCacheMap<K,V>
extends GridCacheConcurrentMap<K,V>

Empty cache map that will never store any entries.

Field Summary

Fields inherited from class org.apache.ignite.internal.processors.cache.GridCacheConcurrentMap

ctx, NON_INTERNAL_ARR

Constructor Summary

Constructors

Constructor and Description
GridNoStorageCacheMap(GridCacheContext<K,V> ctx)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	containsKey(Object key)
GridCacheMapEntry<K,V>	getEntry(Object key) Returns the entry associated with the specified key in the HashMap.
boolean	isEmpty()
int	publicSize()
void	putAll(Map<? extends K,? extends V> m, long ttl) Copies all of the mappings from the specified map to this map These mappings will replace any mappings that this map had for any of the keys currently in the specified map.
GridCacheMapEntry<K,V>	putEntry(long topVer, K key, V val, long ttl)
GridTriple<GridCacheMapEntry<K,V>>	putEntryIfObsoleteOrAbsent(long topVer, K key, V val, long ttl, boolean create)
GridCacheMapEntry<K,V>	randomEntry()
boolean	removeEntry(GridCacheEntryEx<K,V> e) Removes passed in entry if it presents in the map.
GridCacheMapEntry<K,V>	removeEntryIfObsolete(K key) Removes and returns the entry associated with the specified key in the HashMap if entry is obsolete.
int	size() Returns the number of key-value mappings in this map.
String	toString()

Methods inherited from class org.apache.ignite.internal.processors.cache.GridCacheConcurrentMap

allEntries0, allValues, checkConsistency, decrementSize, entries, entries0, entriesx, hash, incrementSize, keySet, setEntryFactory, stripedEntryIterator, values

Methods inherited from class java.lang.Object

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

Constructor Detail

GridNoStorageCacheMap

public GridNoStorageCacheMap(GridCacheContext<K,V> ctx)

Parameters:

ctx - Cache context.

Method Detail

isEmpty

public boolean isEmpty()

Overrides:

isEmpty in class GridCacheConcurrentMap<K,V>

Returns:

True if this map is empty.

size

public int size()

Returns the number of key-value mappings in this map.

Overrides:

size in class GridCacheConcurrentMap<K,V>

Returns:

the number of key-value mappings in this map.

publicSize

public int publicSize()

Overrides:

publicSize in class GridCacheConcurrentMap<K,V>

Returns:

Public size.

containsKey

public boolean containsKey(Object key)

Overrides:

containsKey in class GridCacheConcurrentMap<K,V>

Parameters:

key - Key.

Returns:

True if map contains mapping for provided key.

randomEntry

public GridCacheMapEntry<K,V> randomEntry()

Overrides:

randomEntry in class GridCacheConcurrentMap<K,V>

Returns:

Random entry out of hash map.

getEntry

public GridCacheMapEntry<K,V> getEntry(Object key)

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

Overrides:

getEntry in class GridCacheConcurrentMap<K,V>

Parameters:

key - Key.

Returns:

Entry.

putEntry

public GridCacheMapEntry<K,V> putEntry(long topVer,
                              K key,
                              @Nullable
                              V val,
                              long ttl)

Overrides:

putEntry in class GridCacheConcurrentMap<K,V>

Parameters:

topVer - Topology version.

key - Key.

val - Value.

ttl - Time to live.

Returns:

Cache entry for corresponding key-value pair.

putEntryIfObsoleteOrAbsent

public GridTriple<GridCacheMapEntry<K,V>> putEntryIfObsoleteOrAbsent(long topVer,
                                                            K key,
                                                            @Nullable
                                                            V val,
                                                            long ttl,
                                                            boolean create)

Overrides:

putEntryIfObsoleteOrAbsent in class GridCacheConcurrentMap<K,V>

Parameters:

topVer - Topology version.

key - Key.

val - Value.

ttl - Time to live.

create - Create flag.

Returns:

Triple where the first element is current entry associated with the key, the second is created entry and the third is doomed (all may be null).

putAll

public void putAll(Map<? extends K,? extends V> m,
          long ttl)

Copies all of the mappings from the specified map to this map These mappings will replace any mappings that this map had for any of the keys currently in the specified map.

Overrides:

putAll in class GridCacheConcurrentMap<K,V>

Parameters:

m - mappings to be stored in this map.

ttl - Time to live.

removeEntry

public boolean removeEntry(GridCacheEntryEx<K,V> e)

Removes passed in entry if it presents in the map.

Overrides:

removeEntry in class GridCacheConcurrentMap<K,V>

Parameters:

e - Entry to remove.

Returns:

True if remove happened.

removeEntryIfObsolete

public GridCacheMapEntry<K,V> removeEntryIfObsolete(K key)

Removes and returns the entry associated with the specified key in the HashMap if entry is obsolete. Returns null if the HashMap contains no mapping for this key.

Overrides:

removeEntryIfObsolete in class GridCacheConcurrentMap<K,V>

Parameters:

key - Key.

Returns:

Removed entry, possibly null.

toString

public String toString()

Overrides:

toString in class GridCacheConcurrentMap<K,V>