ehcache

net.sf.ehcache.transaction.local
Class JtaLocalTransactionStore

java.lang.Object
  extended by net.sf.ehcache.store.AbstractStore
      extended by net.sf.ehcache.transaction.AbstractTransactionStore
          extended by net.sf.ehcache.transaction.local.JtaLocalTransactionStore
All Implemented Interfaces:
Store, TerracottaStore

public class JtaLocalTransactionStore
extends AbstractTransactionStore

A Store implementation with support for local transactions driven by a JTA transaction manager

Author:
Ludovic Orban

Field Summary
 
Fields inherited from class net.sf.ehcache.transaction.AbstractTransactionStore
underlyingStore
 
Fields inherited from class net.sf.ehcache.store.AbstractStore
attributeExtractors, searchManager
 
Fields inherited from interface net.sf.ehcache.store.Store
CLUSTER_COHERENT, NODE_COHERENT
 
Constructor Summary
JtaLocalTransactionStore(LocalTransactionStore underlyingStore, TransactionManagerLookup transactionManagerLookup, TransactionController transactionController)
          Create a new JtaLocalTransactionStore instance
 
Method Summary
 boolean containsKey(Object key)
          A check to see if a key is in the Store.
 Element get(Object key)
          Gets an item from the cache.
 List getKeys()
          Gets an Array of the keys for all elements in the disk store.
 Element getOldElement(Object key)
          Method to get to the Element matching the key, oblivious of any in-flight transaction.
 Element getQuiet(Object key)
          Gets an Element from the Store, without updating statistics
 int getSize()
          Returns the current local store size
 int getTerracottaClusteredSize()
          Returns the current Terracotta clustered store size
 boolean put(Element element)
          Puts an item into the store.
 void putAll(Collection<Element> elements)
          Puts a collection of elements into the store.
 Element putIfAbsent(Element element)
          Put an element in the store if no element is currently mapped to the elements key.
 boolean putWithWriter(Element element, CacheWriterManager writerManager)
          Puts an item into the store and the cache writer manager in an atomic operation
 Element remove(Object key)
          Removes an item from the cache.
 void removeAll()
          Remove all of the elements from the store.
 void removeAll(Collection<?> keys)
          Removes a collection of elements from the cache.
 Element removeElement(Element element, ElementValueComparator comparator)
          Remove the Element mapped to the key for the supplied element if the value of the supplied Element is equal to the value of the cached Element.
 Element removeWithWriter(Object key, CacheWriterManager writerManager)
          Removes an item from the store and the cache writer manager in an atomic operation.
 Element replace(Element element)
          Replace the cached element only if an Element is currently cached for this key
 boolean replace(Element old, Element element, ElementValueComparator comparator)
          Replace the cached element only if the value of the current Element is equal to the value of the supplied old Element.
 
Methods inherited from class net.sf.ehcache.transaction.AbstractTransactionStore
bufferFull, containsKeyInMemory, containsKeyOffHeap, containsKeyOnDisk, createWriteBehind, dispose, executeQuery, expireElements, flush, getInMemoryEvictionPolicy, getInMemorySize, getInMemorySizeInBytes, getInternalContext, getLocalKeys, getMBean, getOffHeapSize, getOffHeapSizeInBytes, getOnDiskSize, getOnDiskSizeInBytes, getSearchAttribute, getSearchAttributes, getStatus, getTransactionalMode, hasAbortedSizeOf, isCacheCoherent, isClusterCoherent, isNodeCoherent, notifyCacheEventListenersChanged, quickClear, quickSize, setAttributeExtractors, setInMemoryEvictionPolicy, setNodeCoherent, unsafeGet, waitUntilClusterCoherent
 
Methods inherited from class net.sf.ehcache.store.AbstractStore
addStoreListener, getAll, getAllQuiet, getEventListenerList, recalculateSize, removeStoreListener
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface net.sf.ehcache.store.Store
addStoreListener, getAll, getAllQuiet, recalculateSize, removeStoreListener
 

Constructor Detail

JtaLocalTransactionStore

public JtaLocalTransactionStore(LocalTransactionStore underlyingStore,
                                TransactionManagerLookup transactionManagerLookup,
                                TransactionController transactionController)
Create a new JtaLocalTransactionStore instance

Parameters:
underlyingStore - the underlying LocalTransactionStore
transactionManagerLookup - the TransactionManagerLookup
transactionController - the TransactionController
Method Detail

getOldElement

public Element getOldElement(Object key)
Description copied from class: AbstractTransactionStore
Method to get to the Element matching the key, oblivious of any in-flight transaction.

Overrides:
getOldElement in class AbstractTransactionStore
Parameters:
key - the key to look for
Returns:
the mapped element, outside of any transaction

put

public boolean put(Element element)
            throws CacheException
Puts an item into the store.

Returns:
true if this is a new put for the key or element is null. Returns false if it was an update.
Throws:
CacheException

putAll

public void putAll(Collection<Element> elements)
            throws CacheException
Puts a collection of elements into the store.

Specified by:
putAll in interface Store
Overrides:
putAll in class AbstractStore
Parameters:
elements - Collection of elements to be put in the store
Throws:
CacheException

putWithWriter

public boolean putWithWriter(Element element,
                             CacheWriterManager writerManager)
                      throws CacheException
Puts an item into the store and the cache writer manager in an atomic operation

Returns:
true if this is a new put for the key or element is null. Returns false if it was an update.
Throws:
CacheException

get

public Element get(Object key)
Gets an item from the cache.


getQuiet

public Element getQuiet(Object key)
Gets an Element from the Store, without updating statistics

Returns:
The element

getKeys

public List getKeys()
Gets an Array of the keys for all elements in the disk store.

Returns:
An List of Serializable keys

remove

public Element remove(Object key)
Removes an item from the cache.


removeAll

public void removeAll(Collection<?> keys)
Removes a collection of elements from the cache.

Specified by:
removeAll in interface Store
Overrides:
removeAll in class AbstractStore

removeWithWriter

public Element removeWithWriter(Object key,
                                CacheWriterManager writerManager)
                         throws CacheException
Removes an item from the store and the cache writer manager in an atomic operation.

Throws:
CacheException

removeAll

public void removeAll()
               throws CacheException
Remove all of the elements from the store.

If there are registered CacheEventListeners they are notified of the expiry or removal of the Element as each is removed.

Throws:
CacheException

putIfAbsent

public Element putIfAbsent(Element element)
                    throws NullPointerException
Put an element in the store if no element is currently mapped to the elements key.

Parameters:
element - element to be added
Returns:
the element previously cached for this key, or null if none.
Throws:
NullPointerException - if the element is null, or has a null key

removeElement

public Element removeElement(Element element,
                             ElementValueComparator comparator)
                      throws NullPointerException
Remove the Element mapped to the key for the supplied element if the value of the supplied Element is equal to the value of the cached Element. This is a CAS operation. It is consistent even against a distributed cache that is not coherent. If the old value is stale when this operation is attempted the remove does not take place.

Parameters:
element - Element to be removed
comparator - ElementValueComparator to use to compare elements
Returns:
the Element removed or null if no Element was removed
Throws:
NullPointerException - if the element is null, or has a null key

replace

public boolean replace(Element old,
                       Element element,
                       ElementValueComparator comparator)
                throws NullPointerException,
                       IllegalArgumentException
Replace the cached element only if the value of the current Element is equal to the value of the supplied old Element.

Parameters:
old - Element to be test against
element - Element to be cached
comparator - ElementValueComparator to use to compare elements
Returns:
true is the Element was replaced
Throws:
NullPointerException - if the either Element is null or has a null key
IllegalArgumentException - if the two Element keys are non-null but not equal

replace

public Element replace(Element element)
                throws NullPointerException
Replace the cached element only if an Element is currently cached for this key

Parameters:
element - Element to be cached
Returns:
the Element previously cached for this key, or null if no Element was cached
Throws:
NullPointerException - if the Element is null or has a null key

getSize

public int getSize()
Returns the current local store size

Returns:
the count of the Elements in the Store on the local machine

getTerracottaClusteredSize

public int getTerracottaClusteredSize()
Returns the current Terracotta clustered store size

Returns:
the count of the Elements in the Store across the cluster

containsKey

public boolean containsKey(Object key)
A check to see if a key is in the Store.

Parameters:
key - The Element key
Returns:
true if found. No check is made to see if the Element is expired. 1.2

ehcache

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