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1   /*
2    * Copyright 2001-2008 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   *
16   */
17  package org.apache.juddi.subscription;
18  
19  import org.apache.commons.collections.buffer.CircularFifoBuffer;
20  import org.apache.commons.collections.Buffer;
21  import org.apache.commons.collections.BufferUtils;
22  
23  public class NotificationList<T>  {
24  	private static NotificationList<String> nl = null;
25  	private static Buffer list = null;
26  	
27  	private NotificationList() {	
28  		list = BufferUtils.synchronizedBuffer(new CircularFifoBuffer(10));
29  	}
30  	
31  	public static NotificationList<String> getInstance() {
32  		if (nl == null) {
33  			nl = new NotificationList<String>();
34  		}
35  		return nl;	
36  	}
37  	
38  	public Buffer getNotifications() {
39  		return list;
40  	}
41  }