net.sf.hajdbc.cache

Class LazyDatabaseMetaDataCache

java.lang.Object

net.sf.hajdbc.cache.AbstractDatabaseMetaDataCache

net.sf.hajdbc.cache.LazyDatabaseMetaDataCache

All Implemented Interfaces:

DatabaseMetaDataCache

public class LazyDatabaseMetaDataCache
extends AbstractDatabaseMetaDataCache

DatabaseMetaDataCache implementation that lazily caches data when requested. Used when a compromise between memory usage and performance is desired. Caches DatabaseProperties using a soft reference to prevent OutOfMemoryErrors.

Since:

2.0

Author:

Paul Ferraro

Field Summary

Fields inherited from class net.sf.hajdbc.cache.AbstractDatabaseMetaDataCache

dialect, factory

Constructor Summary

Constructors

Constructor and Description
LazyDatabaseMetaDataCache(Dialect dialect)

Method Summary

Modifier and Type	Method and Description
void	flush() Flushes this cache.
DatabaseProperties	getDatabaseProperties(java.sql.Connection connection) Retrieves processed meta data for this database.

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyDatabaseMetaDataCache

public LazyDatabaseMetaDataCache(Dialect dialect)

Method Detail

flush

public void flush()

Description copied from interface: DatabaseMetaDataCache

Flushes this cache.

See Also:

DatabaseMetaDataCache.flush()

getDatabaseProperties

public DatabaseProperties getDatabaseProperties(java.sql.Connection connection)
                                         throws java.sql.SQLException

Description copied from interface: DatabaseMetaDataCache

Retrieves processed meta data for this database.

Returns:

a DatabaseProperties implementation

Throws:

java.sql.SQLException - if database properties could not be fetched.

See Also:

DatabaseMetaDataCache.getDatabaseProperties(java.sql.Connection)