RegistryImporter


1   package org.sapia.regis.remote.client;
2   
3   import java.util.Properties  ;
4   
5   import javax.naming.InitialContext  ;
6   
7   import org.sapia.regis.Registry;
8   import org.sapia.regis.remote.RegistryExporter;
9   import org.sapia.ubik.rmi.naming.remote.RemoteInitialContextFactory;
10  import org.sapia.ubik.rmi.server.Hub;
11  
12  /**
13   * An instance of this class is used to lookup a remote registry that has been
14   * exported by a <code>RegistryExporter</code>.
15   * 
16   * @see org.sapia.regis.remote.RegistryExporter
17   * 
18   * @author yduchesne
19   *
20   */
21  public class RegistryImporter {
22    
23    /**
24     * This method looks up a remote registry that listens on the given address:port.
25     *  
26     * @param address the remote address to which the remote registry has been bound.
27     * @param port the port to which the remote registry has been bound. 
28     * @return the <code>Registry</code> that could be found on the given port.
29     * @throws Exception if no registry could be found, or if a problem occurred while
30     * looking up.
31     */
32    public Registry lookup(String   String, int port) throws Exception  {
33      return (Registry)Hub.connect(String, port);
34    }
35    
36    /**
37     * This method takes Ubik properties to lookup a remote registry. For more info
38     * concerning the actual properties to use, see the <code>RegistryExporter</code>
39     * class.
40     *  
41     * @param jndiName the name of the remote registry to lookup
42     * @param props the <code>Properties</code> containing the lookup information
43     * @return the <code>Registry</code> that has been found
44     * @throws Exception if no registry could be found, or if a problem occurred while
45     * looking up.
46     * 
47     * @see RegistryExporter#bind(String, int, Properties)
48     */
49    public Registry lookup(String   jndiName, Properties   props) throws Exception  {
50      props.setProperty(InitialContext.INITIAL_CONTEXT_FACTORY, RemoteInitialContextFactory.class.getName());
51      InitialContext   ctx = new InitialContext  (props);
52      try{
53        return new RemoteRegistryProxy((Registry)ctx.lookup(jndiName));
54      }finally{
55        ctx.close();
56      }
57    }
58  
59  }
60
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags