1 /***
2 * @(#)IbatisService.java
3 *
4 * JFoxSOAF, Service-Oriented Application Framework
5 *
6 * Copyright(c) JFoxSOAF Team
7 *
8 * Licensed under the GNU LGPL, Version 2.1 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.gnu.org/copyleft/lesser.html
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 *
20 * For more information, please visit:
21 * http://www.jfox.cn/confluence/display/JFoxSOAF/Home
22 * http://www.huihoo.org/jfox/jfoxsoaf
23 */
24
25 package org.huihoo.jfox.soaf.services.jdbc;
26
27 import java.sql.SQLException;
28 import java.util.Enumeration;
29 import java.util.Hashtable;
30 import java.util.Vector;
31
32 import javax.sql.DataSource;
33
34 import org.apache.commons.lang.BooleanUtils;
35 import org.apache.commons.lang.StringUtils;
36 import org.apache.commons.lang.math.NumberUtils;
37 import org.apache.commons.logging.Log;
38 import org.apache.commons.logging.LogFactory;
39 import org.huihoo.jfox.soaf.exception.DataSourceConfigurationException;
40
41 import com.mchange.v2.c3p0.DataSources;
42 import com.mchange.v2.c3p0.PoolConfig;
43
44 /***
45 * <p>
46 * C3P0 DataSource Factory
47 * </p>
48 *
49 * @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
50 * @version $Revision: 1.6 $ $Date: 2005/05/22 06:49:48 $
51 * @version Revision: 1.0
52 */
53
54 public class C3P0DataSourceFactory extends DataSourceFactory {
55
56 private final Log logger = LogFactory.getLog(getClass());
57
58 private DataSource dataSource;
59
60
61 private Hashtable attributes = new Hashtable();
62
63 /***
64 * @see org.huihoo.jfox.soaf.services.jdbc.DataSourceFactory#getInstance()
65 * @return DataSource instance
66 * @throws DataSourceConfigurationException
67 */
68 public DataSource getInstance() throws DataSourceConfigurationException,
69 SQLException {
70 String jdbcDriverClass = (String) getAttribute(DatabaseConstant.JDBC_DRIVER_CLASS_NAME);
71 if (StringUtils.isEmpty(jdbcDriverClass)) {
72 logger
73 .warn("No JDBC Driver class was specified by database.properties : "
74 + DatabaseConstant.JDBC_DRIVER_CLASS_NAME);
75 } else {
76 try {
77 Class.forName(jdbcDriverClass);
78 } catch (ClassNotFoundException e) {
79 String errorMsg = "JDBC Driver class not found: "
80 + jdbcDriverClass;
81 logger.fatal(errorMsg);
82 throw new DataSourceConfigurationException(errorMsg, e);
83 }
84 }
85
86
87 PoolConfig poolConfig = new PoolConfig();
88 String initPoolSize = (String) getAttribute(DatabaseConstant.JDBC_INIT_POOL_SIZE);
89
90 if (!NumberUtils.isNumber(initPoolSize)) {
91 poolConfig
92 .setInitialPoolSize(NumberUtils.stringToInt(initPoolSize));
93 }
94
95 String minPoolSize = (String) getAttribute(DatabaseConstant.JDBC_MIN_POOL_SIZE);
96
97 if (!NumberUtils.isNumber(minPoolSize)) {
98 poolConfig.setMinPoolSize(NumberUtils.stringToInt(minPoolSize));
99 }
100
101 String maxPoolSize = (String) getAttribute(DatabaseConstant.JDBC_MAX_POOL_SIZE);
102
103 if (!!NumberUtils.isNumber(maxPoolSize)) {
104 poolConfig.setMaxPoolSize(NumberUtils.stringToInt(maxPoolSize));
105 }
106
107 String maxIdleTime = (String) getAttribute(DatabaseConstant.JDBC_MAX_IDLE_TIME);
108
109 if (!NumberUtils.isNumber(maxIdleTime)) {
110 poolConfig.setMaxIdleTime(NumberUtils.stringToInt(maxIdleTime));
111 }
112
113 String idleConnTestPeriod = (String) getAttribute(DatabaseConstant.C3P0_JDBC_IDLE_CONN_TEST_PERIOD);
114
115 if (!NumberUtils.isNumber(maxIdleTime)) {
116 poolConfig.setIdleConnectionTestPeriod(NumberUtils
117 .stringToInt(idleConnTestPeriod));
118 }
119
120 String maxStatements = (String) getAttribute(DatabaseConstant.C3P0_JDBC_MAX_STATEMENTS);
121
122 if (!NumberUtils.isNumber(maxStatements)) {
123 poolConfig.setMaxStatements(NumberUtils.stringToInt(maxStatements));
124 }
125
126 String propertyCycle = (String) getAttribute(DatabaseConstant.C3P0_JDBC_PROPERTY_CYCLE);
127
128 if (!NumberUtils.isNumber(propertyCycle)) {
129 poolConfig.setPropertyCycle(NumberUtils.stringToInt(propertyCycle));
130 }
131
132 String acquireIncrement = (String) getAttribute(DatabaseConstant.C3P0_JDBC_ACQUIRE_INCREMENT);
133
134 if (!NumberUtils.isNumber(acquireIncrement)) {
135 poolConfig.setAcquireIncrement(NumberUtils
136 .stringToInt(acquireIncrement));
137 }
138
139
140
141
142
143 String forceIgnoreUnresolvedTransactions = (String) getAttribute(DatabaseConstant.C3P0_JDBC_FORCE_IGNORE_UNRESOLVED_TRANS);
144
145 if (!StringUtils.isEmpty(forceIgnoreUnresolvedTransactions)) {
146 poolConfig.setForceIgnoreUnresolvedTransactions(BooleanUtils
147 .toBoolean(forceIgnoreUnresolvedTransactions));
148 }
149
150 String numHelperThreads = (String) getAttribute(DatabaseConstant.C3P0_JDBC_NUM_HELPER_THREADS);
151
152 if (!NumberUtils.isNumber(numHelperThreads)) {
153 poolConfig.setNumHelperThreads(NumberUtils
154 .stringToInt(numHelperThreads));
155 }
156
157 String jdbcURL = (String) getAttribute(DatabaseConstant.JDBC_URL);
158 if (StringUtils.isEmpty(jdbcURL)) {
159 logger.error("No JDBC url was specified by database.properties");
160 throw new DataSourceConfigurationException(
161 "No JDBC url was specified");
162 } else {
163 String jdbcUsername = (String) getAttribute(DatabaseConstant.JDBC_USERNAME);
164 String jdbcPassword = (String) getAttribute(DatabaseConstant.JDBC_PASSWORD);
165
166 DataSource unpooledDataSource = DataSources.unpooledDataSource(
167 jdbcURL, jdbcUsername, jdbcPassword);
168 dataSource = DataSources.pooledDataSource(unpooledDataSource,
169 poolConfig);
170 }
171 return dataSource;
172 }
173
174 /***
175 * Return the configuration attribute with the specified name (if any), or
176 * <code>null</code> if there is no such attribute.
177 *
178 * @param name Name of the attribute to return
179 * @return attribute
180 */
181 public Object getAttribute(String name) {
182 return attributes.get(name);
183 }
184
185 /***
186 * Return an array containing the names of all currently defined
187 * configuration attributes. If there are no such attributes, a zero length
188 * array is returned.
189 *
190 * @return attribute names
191 */
192 public String[] getAttributeNames() {
193 Vector names = new Vector();
194 Enumeration keys = attributes.keys();
195 while (keys.hasMoreElements()) {
196 names.addElement(keys.nextElement());
197 }
198 String results[] = new String[names.size()];
199 for (int i = 0; i < results.length; i++) {
200 results[i] = (String) names.elementAt(i);
201 }
202 return (results);
203 }
204
205 /***
206 * Set the configuration attribute with the specified name. Calling this
207 * with a <code>null</code> value is equivalent to calling
208 * <code>removeAttribute(name)</code>.
209 *
210 * @param name Name of the attribute to set
211 * @param value Value of the attribute to set, or <code>null</code> to
212 * remove any setting for this attribute
213 */
214 public void setAttribute(String name, Object value) {
215 if (value == null) {
216 attributes.remove(name);
217 } else {
218 attributes.put(name, value);
219 }
220 }
221
222 /***
223 * Remove any configuration attribute associated with the specified name. If
224 * there is no such attribute, no action is taken.
225 *
226 * @param name Name of the attribute to remove
227 */
228 public void removeAttribute(String name) {
229 attributes.remove(name);
230 }
231
232 }