1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to you under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 * $Id: InternalDataSource.java 464373 2006-10-16 04:21:54Z rahul $
18 */
19
20 package org.apache.shale.examples.sqlbrowser;
21
22 import java.sql.Connection;
23 import java.sql.SQLException;
24 import org.apache.derby.jdbc.EmbeddedDataSource;
25
26 /***
27 * <p>Trivial implementation of <code>DataSource</code> that wraps a data source
28 * provided by Derby, and provides a shutdown hook.</p>
29 */
30 public class InternalDataSource extends EmbeddedDataSource {
31
32
33 // ------------------------------------------------------------ Constructors
34
35
36 /***
37 * <p>Construct a connection pool for the specified URL.</p>
38 */
39 public InternalDataSource(String url) throws SQLException {
40
41 // Instantiate and configure a Derby EmbeddedDataSource
42 setDatabaseName(url);
43 setCreateDatabase("create");
44
45 }
46
47
48 // ---------------------------------------------------------- Public Methods
49
50
51 /***
52 * <p>Cause the embedded Derby database to be shut down.</p>
53 */
54 public void shutdown() throws SQLException {
55
56 setShutdownDatabase("shutdown");
57 Connection conn = null;
58 try {
59 conn = getConnection();
60 } catch (SQLException e) {
61 ; // Ignore errors here; we just wanted to trigger the shutdown
62 } finally {
63 try {
64 if (conn != null) {
65 conn.close();
66 }
67 } catch (SQLException e) {
68 ;
69 }
70 }
71
72 }
73
74
75 }