DriverRegistrarImpl


1   /*
2    * Copyright 2004 Outerthought bvba and Schaubroeck nv
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.outerj.daisy.datasource;
17  
18  import java.util.HashMap  ;
19  import java.util.Iterator  ;
20  import java.util.Map  ;
21  
22  import org.apache.avalon.framework.activity.Initializable;
23  import org.apache.avalon.framework.configuration.Configurable;
24  import org.apache.avalon.framework.configuration.Configuration;
25  import org.apache.avalon.framework.configuration.ConfigurationException;
26  import org.outerj.daisy.configutil.PropertyResolver;
27  import org.outerj.daisy.jdbcutil.DriverLoader;
28  
29  /**
30   * @avalon.component version="1.0" name="driverregistrar" lifestyle="singleton"
31   * @avalon.service type="org.outerj.daisy.datasource.DriverRegistrar"
32   */
33  public class DriverRegistrarImpl implements Initializable, Configurable, DriverRegistrar {
34      private Map   drivers;
35  
36      public void configure(Configuration configuration) throws ConfigurationException {
37          drivers = new HashMap  ();
38          Configuration[] driverConfs = configuration.getChild("drivers").getChildren("driver");
39          for (int i = 0; i < driverConfs.length; i++) {
40              String   classpath = PropertyResolver.resolveProperties(driverConfs[i].getChild("classpath").getValue(""));
41              String   classname = driverConfs[i].getChild("classname").getValue("com.mysql.jdbc.Driver");
42              drivers.put(classname, classpath);
43          }
44      }
45  
46      public void initialize() throws Exception   {
47          Iterator   it = drivers.keySet().iterator();
48          while (it.hasNext()) {
49              String   classname = (String  )it.next();
50              String   classpath = (String  )drivers.get(classname);
51              DriverLoader.loadDatabaseDriver(classpath, classname);
52          }        
53      }
54  }
55
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