com.sun.gjc.spi.base.datastructure

Class SynchronizedCache

java.lang.Object

com.sun.gjc.spi.base.datastructure.SynchronizedCache

All Implemented Interfaces:

Cache

public class SynchronizedCache
extends Object
implements Cache

Author:

Shalini M

Constructor Summary

Constructors

Constructor and Description
SynchronizedCache(Cache cacheImpl)

Method Summary

Modifier and Type	Method and Description
void	addToCache(CacheObjectKey key, Object entry, boolean force) Add key and entry value into the cache.
Object	checkAndUpdateCache(CacheObjectKey key) Check if an entry is found for this key object.
void	clearCache() Clear statement cache
void	flushCache() Closing all statements in statement cache and flush the statement cache of all the statements.
int	getSize() Get the size of statement cache
boolean	isSynchronized() Check if the statement cache is synchronized.
void	purge() Remove all statements stored in the statement cache after closing the statement objects.
void	purge(Object entry) Remove the specified entry stored in the statement cache after closing the statement object associated with this entry.

Methods inherited from class java.lang.Object

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

Constructor Detail

SynchronizedCache

public SynchronizedCache(Cache cacheImpl)

Method Detail

checkAndUpdateCache

public Object checkAndUpdateCache(CacheObjectKey key)

Description copied from interface: Cache

Check if an entry is found for this key object. If found, the entry is put in the result object and back into the list.

Specified by:

checkAndUpdateCache in interface Cache

Parameters:

key - whose mapping entry is to be checked.

Returns:

result object that contains the key with the entry if not busy or null when (1) object not found in cache (2) object found but is busy

addToCache

public void addToCache(CacheObjectKey key,
                       Object entry,
                       boolean force)

Description copied from interface: Cache

Add key and entry value into the cache.

Specified by:

addToCache in interface Cache

Parameters:

key - that contains the sql string and its type (PS/CS)

entry - that is the wrapper of PreparedStatement or CallableStatement

force - If existing key is to be overwritten

clearCache

public void clearCache()

Description copied from interface: Cache

Clear statement cache

Specified by:

clearCache in interface Cache

purge

public void purge()

Description copied from interface: Cache

Remove all statements stored in the statement cache after closing the statement objects. Used when the statement cache size exceeds user defined maximum cache size.

Specified by:

purge in interface Cache

getSize

public int getSize()

Description copied from interface: Cache

Get the size of statement cache

Specified by:

getSize in interface Cache

Returns:

int statement cache size

isSynchronized

public boolean isSynchronized()

Description copied from interface: Cache

Check if the statement cache is synchronized.

Specified by:

isSynchronized in interface Cache

Returns:

boolean synchronized flag.

flushCache

public void flushCache()

Description copied from interface: Cache

Closing all statements in statement cache and flush the statement cache of all the statements. Used when a physical connection to the underlying resource manager is destroyed.

Specified by:

flushCache in interface Cache

purge

public void purge(Object entry)

Description copied from interface: Cache

Remove the specified entry stored in the statement cache after closing the statement object associated with this entry. Used when statement is being reclaimed and is being used for the subsequent requests from the application.

Specified by:

purge in interface Cache