01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jboss.resource.adapter.jdbc;
23:
24: import java.io.Serializable;
25: import java.sql.Connection;
26: import java.sql.Statement;
27: import java.sql.SQLException;
28:
29: /**
30: * Implements check valid connection sql
31: *
32: * @author <a href="mailto:adrian@jboss.org">Adrian Brock</a>
33: * @version $Revision: 57189 $
34: */
35: public class CheckValidConnectionSQL implements ValidConnectionChecker,
36: Serializable {
37: private static final long serialVersionUID = -222752863430216887L;
38:
39: String sql;
40:
41: public CheckValidConnectionSQL() {
42: }
43:
44: public CheckValidConnectionSQL(String sql) {
45: this .sql = sql;
46: }
47:
48: public SQLException isValidConnection(Connection c) {
49: try {
50: Statement s = c.createStatement();
51: try {
52: s.execute(sql);
53: return null;
54: } finally {
55: s.close();
56: }
57: } catch (SQLException e) {
58: return e;
59: }
60: }
61: }
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