ConfigurationStartup


1   /*
2    * Copyright (C) The MX4J Contributors.
3    * All rights reserved.
4    *
5    * This software is distributed under the terms of the MX4J License version 1.0.
6    * See the terms of the MX4J License in the documentation provided with this software.
7    */
8   
9   package mx4j.examples.tools.config;
10  
11  import java.io.BufferedReader  ;
12  import java.io.FileReader  ;
13  import java.io.Reader  ;
14  import javax.management.MBeanServer  ;
15  import javax.management.MBeanServerFactory  ;
16  import javax.management.ObjectName  ;
17  
18  import mx4j.tools.config.ConfigurationLoader;
19  
20  /**
21   * This example shows how to use the XML configuration files to load MBeans into
22   * an MBeanServer. <br />
23   * The main class is {@link ConfigurationLoader}, that is able to read the XML
24   * configuration format defined by the MX4J project (see the online documentation
25   * for details on the format).
26   * A <code>ConfigurationLoader</code> is an MBean itself, and loads information
27   * from one XML file into one MBeanServer. <br />
28   * This example runs by specifying the path of an XML configuration file as a
29   * program argument, such as
30   * <pre>
31   * java -classpath ... mx4j.examples.tools.config.ConfigurationStartup ./config.xml
32   * </pre>
33   * Refer to the documentation about the ConfigurationLoader for further information.
34   *
35   * @version $Revision: 1.1 $
36   * @see ConfigurationShutdown
37   */
38  public class ConfigurationStartup
39  {
40     public static void main(String  [] args) throws Exception  
41     {
42        // The MBeanServer
43        MBeanServer   server = MBeanServerFactory.newMBeanServer();
44  
45        // The configuration loader
46  
47        /* Choice 1: as an external object */
48        // ConfigurationLoader loader = new ConfigurationLoader(server);
49  
50        /* Choice 2: as a created MBean */
51        // server.createMBean(ConfigurationLoader.class.getName(), ObjectName.getInstance("config:service=loader"), null);
52  
53        /* Choice 3: as a registered MBean */
54        ConfigurationLoader loader = new ConfigurationLoader();
55        server.registerMBean(loader, ObjectName.getInstance("config:service=loader"));
56  
57        // The XML file
58  
59        /* Choice 1: read it from classpath using classloaders
60           Note: the directory that contains the XML file must be in the classpath */
61        // InputStream stream = ConfigurationStartup.class.getClassLoader().getResourceAsStream("config.xml");
62        // Reader reader = new BufferedReader(new InputStreamReader(stream));
63  
64        /* Choice 2: read it from a file
65           Note: requires file path to be passed as program argument */
66        String   path = args[0];
67        Reader   reader = new BufferedReader  (new FileReader  (path));
68  
69        // Read and execute the 'startup' section of the XML file
70        loader.startup(reader);
71  
72        reader.close();
73  
74        System.out.println("Application configured successfully");
75     }
76  }
77
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags