1 package org.apache.torque.dsfactory;
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 import javax.sql.ConnectionPoolDataSource;
20 import javax.sql.DataSource;
21
22 import org.apache.commons.configuration.Configuration;
23
24 import org.apache.commons.dbcp.datasources.SharedPoolDataSource;
25
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
28
29 import org.apache.torque.Torque;
30 import org.apache.torque.TorqueException;
31
32 /***
33 * A factory that looks up the DataSource using the JDBC2 pool methods.
34 *
35 * @author <a href="mailto:jmcnally@apache.org">John McNally</a>
36 * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
37 * @version $Id: SharedPoolDataSourceFactory.java 239636 2005-08-24 12:38:09Z henning $
38 */
39 public class SharedPoolDataSourceFactory
40 extends AbstractDataSourceFactory
41 implements DataSourceFactory
42 {
43
44 /*** The log. */
45 private static Log log
46 = LogFactory.getLog(SharedPoolDataSourceFactory.class);
47
48 /*** The wrapped <code>DataSource</code>. */
49 private SharedPoolDataSource ds;
50
51 /***
52 * @see org.apache.torque.dsfactory.DataSourceFactory#getDataSource
53 */
54 public DataSource getDataSource()
55 {
56 return ds;
57 }
58
59 /***
60 * @see org.apache.torque.dsfactory.DataSourceFactory#initialize
61 */
62 public void initialize(Configuration configuration) throws TorqueException
63 {
64 super.initialize(configuration);
65
66 ConnectionPoolDataSource cpds = initCPDS(configuration);
67 SharedPoolDataSource ds = initJdbc2Pool(configuration);
68 ds.setConnectionPoolDataSource(cpds);
69 this.ds = ds;
70 }
71
72 /***
73 * Initializes the Jdbc2PoolDataSource.
74 *
75 * @param configuration where to read the settings from
76 * @throws TorqueException if a property set fails
77 * @return a configured <code>Jdbc2PoolDataSource</code>
78 */
79 private SharedPoolDataSource initJdbc2Pool(Configuration configuration)
80 throws TorqueException
81 {
82 log.debug("Starting initJdbc2Pool");
83 SharedPoolDataSource ds = new SharedPoolDataSource();
84 Configuration c = Torque.getConfiguration();
85
86 if (c == null || c.isEmpty())
87 {
88 log.warn("Global Configuration not set,"
89 + " no Default pool data source configured!");
90 }
91 else
92 {
93 Configuration conf = c.subset(DEFAULT_POOL_KEY);
94 applyConfiguration(conf, ds);
95 }
96
97 Configuration conf = configuration.subset(POOL_KEY);
98 applyConfiguration(conf, ds);
99 return ds;
100 }
101
102
103 /***
104 * Closes the pool associated with this factory and releases it.
105 * @throws TorqueException if the pool cannot be closed properly
106 */
107 public void close() throws TorqueException
108 {
109 try
110 {
111 ds.close();
112 }
113 catch (Exception e)
114 {
115 log.error("Exception caught during close()", e);
116 throw new TorqueException(e);
117 }
118 ds = null;
119 }
120 }