1 /****************************************************************
2 * Licensed to the Apache Software Foundation (ASF) under one *
3 * or more contributor license agreements. See the NOTICE file *
4 * distributed with this work for additional information *
5 * regarding copyright ownership. The ASF licenses this file *
6 * to you under the Apache License, Version 2.0 (the *
7 * "License"); you may not use this file except in compliance *
8 * with the License. You may obtain a copy of the License at *
9 * *
10 * http://www.apache.org/licenses/LICENSE-2.0 *
11 * *
12 * Unless required by applicable law or agreed to in writing, *
13 * software distributed under the License is distributed on an *
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
15 * KIND, either express or implied. See the License for the *
16 * specific language governing permissions and limitations *
17 * under the License. *
18 ****************************************************************/
19
20 package org.apache.james.jspf.core;
21
22
23 import org.apache.james.jspf.core.exceptions.TimeoutException;
24
25 import java.util.List;
26
27 /**
28 * Represent a DNSResponse
29 *
30 */
31 public class DNSResponse {
32
33 private List response;
34
35 private TimeoutException exception;
36
37 public DNSResponse(TimeoutException exception) {
38 this.exception = exception;
39 this.response = null;
40 }
41
42 public DNSResponse(List response) {
43 this.exception = null;
44 this.response = response;
45 }
46
47 /**
48 * Returns the DNS response
49 *
50 * @return the dns repsonse
51 * @throws TimeoutException get thrown if an timeout was returned while tried to
52 * process a dns request
53 */
54 public List getResponse() throws TimeoutException {
55 if (exception != null) {
56 throw exception;
57 } else {
58 return response;
59 }
60 }
61
62 /**
63 * @see java.lang.Object#toString()
64 */
65 public String toString() {
66 if (exception != null) {
67 return "EXCEPTION!";
68 } else if (response != null) {
69 return response.toString();
70 } else {
71 return "NULL?";
72 }
73 }
74 }