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SwarmCache (Hibernate API Documentation) - Hibernate 3.2.3 正式版 API 英文文档

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org.hibernate.cache
Class SwarmCache

java.lang.Object
  org.hibernate.cache.SwarmCache

All Implemented Interfaces:

Cache

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public class SwarmCache

extends Object

implements Cache

Author:

Jason Carreira, Gavin King

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Constructor Summary

SwarmCache(net.sf.swarmcache.ObjectCache cache, String regionName)

 

Method Summary
void	clear()           Clear the cache
void	destroy()           Clean up
Object	get(Object key)           Get an item from the cache
long	getElementCountInMemory()           The count of entries currently contained in the regions in-memory store.
long	getElementCountOnDisk()           The count of entries currently contained in the regions disk store.
String	getRegionName()           Get the name of the cache region
long	getSizeInMemory()           The number of bytes is this cache region currently consuming in memory.
int	getTimeout()           Get a reasonable "lock timeout"
void	lock(Object key)           If this is a clustered cache, lock the item
long	nextTimestamp()           Generate a (coarse) timestamp
void	put(Object key, Object value)           Add an item to the cache
Object	read(Object key)           Get an item from the cache
void	remove(Object key)           Remove an item from the cache
Map	toMap()           optional operation
String	toString()
void	unlock(Object key)           If this is a clustered cache, unlock the item
void	update(Object key, Object value)           Add an item to the cache

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

SwarmCache

public SwarmCache(net.sf.swarmcache.ObjectCache cache,
                  String regionName)

Method Detail

get

public Object get(Object key)
           throws CacheException

Get an item from the cache

Specified by:

get in interface Cache

Parameters:

key -

Returns:

the cached object or null

Throws:

CacheException

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read

public Object read(Object key)
            throws CacheException

Description copied from interface: Cache

Get an item from the cache

Specified by:

read in interface Cache

Parameters:

key -

Returns:

the cached object or null

Throws:

CacheException

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update

public void update(Object key,
                   Object value)
            throws CacheException

Add an item to the cache

Specified by:

update in interface Cache

Parameters:

key -

value -

Throws:

CacheException

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put

public void put(Object key,
                Object value)
         throws CacheException

Add an item to the cache

Specified by:

put in interface Cache

Parameters:

key -

value -

Throws:

CacheException

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remove

public void remove(Object key)
            throws CacheException

Remove an item from the cache

Specified by:

remove in interface Cache

Throws:

CacheException

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clear

public void clear()
           throws CacheException

Clear the cache

Specified by:

clear in interface Cache

Throws:

CacheException

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destroy

public void destroy()
             throws CacheException

Clean up

Specified by:

destroy in interface Cache

Throws:

CacheException

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lock

public void lock(Object key)
          throws CacheException

If this is a clustered cache, lock the item

Specified by:

lock in interface Cache

Throws:

CacheException

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unlock

public void unlock(Object key)
            throws CacheException

If this is a clustered cache, unlock the item

Specified by:

unlock in interface Cache

Throws:

CacheException

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nextTimestamp

public long nextTimestamp()

Generate a (coarse) timestamp

Specified by:

nextTimestamp in interface Cache

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getTimeout

public int getTimeout()

Get a reasonable "lock timeout"

Specified by:

getTimeout in interface Cache

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getRegionName

public String getRegionName()

Description copied from interface: Cache

Get the name of the cache region

Specified by:

getRegionName in interface Cache

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getSizeInMemory

public long getSizeInMemory()

Description copied from interface: Cache

The number of bytes is this cache region currently consuming in memory.

Specified by:

getSizeInMemory in interface Cache

Returns:

The number of bytes consumed by this region; -1 if unknown or unsupported.

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getElementCountInMemory

public long getElementCountInMemory()

Description copied from interface: Cache

The count of entries currently contained in the regions in-memory store.

Specified by:

getElementCountInMemory in interface Cache

Returns:

The count of entries in memory; -1 if unknown or unsupported.

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getElementCountOnDisk

public long getElementCountOnDisk()

Description copied from interface: Cache

The count of entries currently contained in the regions disk store.

Specified by:

getElementCountOnDisk in interface Cache

Returns:

The count of entries on disk; -1 if unknown or unsupported.

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toMap

public Map toMap()

Description copied from interface: Cache

optional operation

Specified by:

toMap in interface Cache

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toString

public String toString()

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