001/* 002 * HA-JDBC: High-Availability JDBC 003 * Copyright (c) 2004-2007 Paul Ferraro 004 * 005 * This library is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as published by the 007 * Free Software Foundation; either version 2.1 of the License, or (at your 008 * option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, but WITHOUT 011 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 012 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 013 * for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public License 016 * along with this library; if not, write to the Free Software Foundation, 017 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018 * 019 * Contact: ferraro@users.sourceforge.net 020 */ 021package net.sf.hajdbc.cache; 022 023import java.sql.Connection; 024import java.sql.SQLException; 025 026import net.sf.hajdbc.DatabaseProperties; 027import net.sf.hajdbc.Dialect; 028 029/** 030 * DatabaseMetaDataCache implementation that does not cache data. 031 * To be used when memory usage is more of a concern than performance. 032 * 033 * @author Paul Ferraro 034 * @since 2.0 035 */ 036public class SimpleDatabaseMetaDataCache extends AbstractDatabaseMetaDataCache 037{ 038 public SimpleDatabaseMetaDataCache(Dialect dialect) 039 { 040 super(dialect); 041 } 042 043 /** 044 * @see net.sf.hajdbc.DatabaseMetaDataCache#flush() 045 */ 046 @Override 047 public void flush() 048 { 049 // Nothing to flush 050 } 051 052 /** 053 * @see net.sf.hajdbc.DatabaseMetaDataCache#getDatabaseProperties(java.sql.Connection) 054 */ 055 @Override 056 public DatabaseProperties getDatabaseProperties(Connection connection) throws SQLException 057 { 058 return new SimpleDatabaseProperties(connection.getMetaData(), this.factory, this.dialect); 059 } 060}