com.continuent.tungsten.replicator.database
Class PreparedStatementCache

java.lang.Object
  com.continuent.tungsten.replicator.database.PreparedStatementCache

All Implemented Interfaces:

CacheResourceManager<PreparedStatementHolder>

public class PreparedStatementCache
extends java.lang.Object
implements CacheResourceManager<PreparedStatementHolder>

Implements a cache for prepared statements, which are identified by a single key.

Constructor Summary

PreparedStatementCache(int capacity)
Creates a new table metadata cache.

Method Summary

void	invalidate(java.lang.String key) Release one prepared statement.
void	invalidateAll() Release all metadata in the cache.
void	release(PreparedStatementHolder psh) Release resources for this metadata value.
java.sql.PreparedStatement	retrieve(java.lang.String key) Retrieves prepared statement or returns null if it is not in the cache.
PreparedStatementHolder	retrieveExtended(java.lang.String key) Retrieves prepared statement plus query text or returns null if not in the cache.
int	size() Returns the number of entries in the metadata cache.
void	store(java.lang.String key, java.sql.PreparedStatement ps, java.lang.String query) Store prepared statement.

Methods inherited from class java.lang.Object

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

Constructor Detail

PreparedStatementCache

public PreparedStatementCache(int capacity)

Creates a new table metadata cache.

Method Detail

release

public void release(PreparedStatementHolder psh)

Description copied from interface: CacheResourceManager

Release resources for this metadata value.

Specified by:

release in interface CacheResourceManager<PreparedStatementHolder>

size

public int size()

Returns the number of entries in the metadata cache.

store

public void store(java.lang.String key,
                  java.sql.PreparedStatement ps,
                  java.lang.String query)

Store prepared statement.

retrieve

public java.sql.PreparedStatement retrieve(java.lang.String key)

Retrieves prepared statement or returns null if it is not in the cache.

retrieveExtended

public PreparedStatementHolder retrieveExtended(java.lang.String key)

Retrieves prepared statement plus query text or returns null if not in the cache.

invalidate

public void invalidate(java.lang.String key)

Release one prepared statement.

invalidateAll

public void invalidateAll()

Release all metadata in the cache.