01: /*
02: * HA-JDBC: High-Availability JDBC
03: * Copyright (c) 2004-2007 Paul Ferraro
04: *
05: * This library is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU Lesser General Public License as published by the
07: * Free Software Foundation; either version 2.1 of the License, or (at your
08: * option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful, but WITHOUT
11: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
13: * for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public License
16: * along with this library; if not, write to the Free Software Foundation,
17: * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18: *
19: * Contact: ferraro@users.sourceforge.net
20: */
21: package net.sf.hajdbc.cache;
22:
23: import java.sql.Connection;
24: import java.sql.SQLException;
25:
26: import net.sf.hajdbc.DatabaseProperties;
27:
28: /**
29: * DatabaseMetaDataCache implementation that does not cache data.
30: * To be used when memory usage is more of a concern than performance.
31: *
32: * @author Paul Ferraro
33: * @since 2.0
34: */
35: public class NullDatabaseMetaDataCache extends
36: AbstractDatabaseMetaDataCache {
37: /**
38: * @see net.sf.hajdbc.DatabaseMetaDataCache#flush(java.sql.Connection)
39: */
40: @Override
41: public void flush(Connection connection) {
42: // Nothing to flush
43: }
44:
45: /**
46: * @see net.sf.hajdbc.DatabaseMetaDataCache#getDatabaseProperties(java.sql.Connection)
47: */
48: @Override
49: public DatabaseProperties getDatabaseProperties(
50: Connection connection) throws SQLException {
51: LazyDatabaseProperties.setConnection(connection);
52:
53: return new LazyDatabaseProperties(this.dialect);
54: }
55: }
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