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Java > Open Source Codes > org > apache > geronimo > clustering > DataListener


1 /**
2  *
3  * Copyright 2003-2004 The Apache Software Foundation
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.apache.geronimo.clustering;
19
20 import java.util.List JavaDoc;
21
22 /**
23  * An interface implemented by components that wish to have their
24  * state initialised from the Cluster.
25  *
26  * @version $Rev: 46019 $ $Date: 2004-09-14 02:56:06 -0700 (Tue, 14 Sep 2004) $
27  */
28 public interface
29   DataListener
30 {
31   /**
32    * Called by Cluster to retrieve current Cluster state.
33    *
34    */
35   public Data getData();
36   /**
37    * Called by Cluster to initialise the state of a [new] node.
38    *
39    * @param state <code>Data</code> to be used as the node's initial
40    * state.
41    */
42   public void setData(Data state);
43 }
44
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