Address


1   /*
2    * (c) Rob Gordon 2005
3    */
4   package org.oddjob.arooa.registry;
5   
6   import java.io.Serializable  ;
7   
8   /**
9    * A address uniquely identifies a component by its server
10   * and path. 
11   */
12  public class Address implements Serializable   {
13      private static final long serialVersionUID = 20051117;
14      
15      /** The server */
16      private final ServerId serverId;
17      
18      /** The path */
19      private final Path path;
20      
21      /**
22       * Create a local address.
23       * 
24       * @param path The path to the component.
25       */
26      public Address(Path path) {
27          this(ServerId.local(), path);
28      }
29  
30      /**
31       * Create an address of an object on a server.
32       * 
33       * @param serverId The server id.
34       * @param path The path.
35       */
36      public Address(ServerId serverId, Path path) {
37          if (path == null) {
38              throw new NullPointerException  ("Path must not be null.");
39          }
40          if (serverId == null) {
41              throw new NullPointerException  ("URL must not be null.");
42          }
43          this.path = path;
44          this.serverId = serverId;
45      }
46      
47      /**
48       * Get the path.
49       * 
50       * @return The path.
51       */
52      public Path getPath() {
53          return path;
54      }
55      
56      /**
57       * Get the ServerId.
58       * 
59       * @return The ServerId.
60       */
61      public ServerId getServerId() {
62          return serverId;
63      }
64      
65      /*
66       *  (non-Javadoc)
67       * @see java.lang.Object#toString()
68       */
69      public String   toString() {
70          return serverId.toString() + ":" + path.toString();
71      }
72      
73      /**
74       * Utility function for debugs.
75       * 
76       * @param addresses Array of address.
77       * @return A string.
78       */
79      public static String   arrayAsString(Address[] addresses) {
80          if (addresses.length == 0) {
81              return "[No Addresses]";
82          }
83          StringBuffer   buf = new StringBuffer  ();
84          for (int i = 0; i < addresses.length; ++i) {
85              buf.append("[");
86              buf.append(addresses[i].toString());
87              buf.append("]");
88          }
89          return buf.toString();
90      }
91  }
92
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