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.activecluster.group;
19
20 import org.activecluster.Node;
21
22 /***
23 * Represents a filter on a Node to allow a pluggable
24 * Strategy Pattern to decide which nodes can be master nodes etc.
25 *
26 * @version $Revision: 1.1 $
27 */
28 public interface NodeFilter {
29
30 /***
31 * Returns true if the given node matches the filter
32 */
33 public boolean evaluate(Node node);
34 }