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1   /*** 
2    * 
3    * Copyright 2004 Protique Ltd
4    * 
5    * Licensed under the Apache License, Version 2.0 (the "License"); 
6    * you may not use this file except in compliance with the License. 
7    * You may obtain a copy of the License at 
8    * 
9    * http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS, 
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
14   * See the License for the specific language governing permissions and 
15   * limitations under the License. 
16   * 
17   **/
18  package org.codehaus.activecluster.impl;
19  
20  import org.codehaus.activecluster.Node;
21  
22  import javax.jms.Destination;
23  import java.util.HashMap;
24  import java.util.Map;
25  
26  
27  /***
28   * Default implementation of a remote Node
29   *
30   * @version $Revision: 1.6 $
31   */
32  public class NodeImpl implements Node {
33  
34      private Destination destination;
35      protected Map state;
36      protected boolean coordinator;
37  
38      /***
39       * Allow a node to be copied for sending it as a message
40       *
41       * @param node
42       */
43      public NodeImpl(Node node) {
44          this(node.getDestination(), node.getState());
45      }
46  
47      public NodeImpl(Destination destination) {
48          this(destination, new HashMap());
49      }
50  
51      public NodeImpl(Destination destination, Map state) {
52          this.destination = destination;
53          this.state = state;
54      }
55  
56      /***
57       * @return the name of the node
58       */
59      public String getName() {
60          return destination.toString();
61      }
62  
63      public String toString() {
64          return "Node[destination: " + destination + " state: " + state + "]";
65      }
66  
67      public Destination getDestination() {
68          return destination;
69      }
70  
71      public synchronized Map getState() {
72          return new HashMap(state);
73      }
74  
75  
76      protected synchronized void setState(Map state) {
77          this.state = state;
78      }
79  
80  
81      /***
82       * @return true if this node has been elected as coordinator
83       */
84      public boolean isCoordinator() {
85          return coordinator;
86      }
87  
88      protected void setCoordinator(boolean value) {
89          coordinator = value;
90      }
91  }