com.sun.gjc.spi.base.datastructure

Interface Cache

All Known Implementing Classes:

FIXEDCacheImpl, LRUCacheImpl, SynchronizedCache

public interface Cache

Author:

Shalini M

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.

Method Detail

checkAndUpdateCache

Object checkAndUpdateCache(CacheObjectKey key)

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.

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

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

Add key and entry value into the 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

void clearCache()

Clear statement cache

purge

void purge()

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.

flushCache

void flushCache()

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.

getSize

int getSize()

Get the size of statement cache

Returns:

int statement cache size

isSynchronized

boolean isSynchronized()

Check if the statement cache is synchronized.

Returns:

boolean synchronized flag.

purge

void purge(Object entry)

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.

Parameters:

entry -