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    1   /***
    2    * @(#)XADataSourceFactory.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.util.Enumeration;
    28  import java.util.Hashtable;
    29  import java.util.Vector;
    30
    31  import javax.sql.DataSource;
    32
    33  import org.apache.commons.lang.math.NumberUtils;
    34  import org.apache.commons.logging.Log;
    35  import org.apache.commons.logging.LogFactory;
    36  import org.enhydra.jdbc.standard.StandardXADataSource;
    37  import org.huihoo.jfox.soaf.container.ServiceFactory;
    38  import org.huihoo.jfox.soaf.services.transaction.JotmTransactionService;
    39
    40  /***
    41   * <p>
    42   * XADataSource Factory.
    43   * </p>
    44   *
    45   * @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
    46   * @version $Revision: 1.1 $ $Date: 2006/02/15 08:45:45 $
    47   * @version Revision: 1.0
    48   */
    49
    50  public class XADataSourceFactory extends DataSourceFactory {
    51
    52  	/***
    53  	 * @param arg0
    54  	 */
    55  	public XADataSourceFactory() {
    56  	}
    57
    58  	private DataSource xads;
    59
    60  	private Hashtable attributes = new Hashtable();
    61
    62  	private JotmTransactionService jotmTS = (JotmTransactionService) ServiceFactory
    63  			.getInstance().getService(JotmTransactionService.class);
    64
    65  	private final Log logger = LogFactory.getLog(getClass());
    66
    67  	public DataSource getInstance() {
    68  		xads = new StandardXADataSource();
    69  		try {
    70  			((StandardXADataSource) xads)
    71  					.setDriverName((String) getAttribute(DatabaseConstant.JDBC_DRIVER_CLASS_NAME));
    72  			((StandardXADataSource) xads)
    73  					.setUrl((String) getAttribute(DatabaseConstant.JDBC_URL));
    74  			((StandardXADataSource) xads)
    75  					.setUser((String) getAttribute(DatabaseConstant.JDBC_USERNAME));
    76  			((StandardXADataSource) xads)
    77  					.setPassword((String) getAttribute(DatabaseConstant.JDBC_PASSWORD));
    78  			String maxConNum = (String) getAttribute(DatabaseConstant.JDBC_MAX_POOL_SIZE);
    79  			String minConNum = (String) getAttribute(DatabaseConstant.JDBC_MIN_POOL_SIZE);
    80  			((StandardXADataSource) xads).setMaxCon(NumberUtils
    81  					.toInt(maxConNum));
    82  			((StandardXADataSource) xads).setMinCon(NumberUtils
    83  					.toInt(minConNum));
    84  			((StandardXADataSource) xads).setTransactionManager(jotmTS
    85  					.getTransactionManager());
    86  		} catch (Exception e) {
    87  			logger.error("Init XADataSource failed " + e.getMessage());
    88  		}
    89  		return xads;
    90  	}
    91
    92  	/***
    93  	 * Return the configuration attribute with the specified name (if any), or
    94  	 * <code>null</code> if there is no such attribute.
    95  	 *
    96  	 * @param name
    97  	 *            Name of the attribute to return
    98  	 * @return attribute
    99  	 */
    100 	public Object getAttribute(String name) {
    101 		return attributes.get(name);
    102 	}
    103
    104 	/***
    105 	 * Return an array containing the names of all currently defined
    106 	 * configuration attributes. If there are no such attributes, a zero length
    107 	 * array is returned.
    108 	 *
    109 	 * @return attribute names
    110 	 */
    111 	public String[] getAttributeNames() {
    112 		Vector names = new Vector();
    113 		Enumeration keys = attributes.keys();
    114 		while (keys.hasMoreElements()) {
    115 			names.addElement(keys.nextElement());
    116 		}
    117 		String results[] = new String[names.size()];
    118 		for (int i = 0; i < results.length; i++) {
    119 			results[i] = (String) names.elementAt(i);
    120 		}
    121 		return (results);
    122 	}
    123
    124 	/***
    125 	 * Remove any configuration attribute associated with the specified name. If
    126 	 * there is no such attribute, no action is taken.
    127 	 *
    128 	 * @param name
    129 	 *            Name of the attribute to remove
    130 	 */
    131 	public void removeAttribute(String name) {
    132 		attributes.remove(name);
    133
    134 	}
    135
    136 	/***
    137 	 * Set the configuration attribute with the specified name. Calling this
    138 	 * with a <code>null</code> value is equivalent to calling
    139 	 * <code>removeAttribute(name)</code>.
    140 	 *
    141 	 * @param name
    142 	 *            Name of the attribute to set
    143 	 * @param value
    144 	 *            Value of the attribute to set, or <code>null</code> to
    145 	 *            remove any setting for this attribute
    146 	 */
    147 	public void setAttribute(String name, Object value) {
    148 		if (value == null) {
    149 			attributes.remove(name);
    150 		} else {
    151 			attributes.put(name, value);
    152 		}
    153 	}
    154 }