001 /****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one *
003 * or more contributor license agreements. See the NOTICE file *
004 * distributed with this work for additional information *
005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
007 * "License"); you may not use this file except in compliance *
008 * with the License. You may obtain a copy of the License at *
009 * *
010 * http://www.apache.org/licenses/LICENSE-2.0 *
011 * *
012 * Unless required by applicable law or agreed to in writing, *
013 * software distributed under the License is distributed on an *
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
015 * KIND, either express or implied. See the License for the *
016 * specific language governing permissions and limitations *
017 * under the License. *
018 ****************************************************************/
019
020 package org.apache.james.jspf.core;
021
022
023 import org.apache.james.jspf.core.exceptions.TimeoutException;
024
025 import java.util.List;
026
027 /**
028 * Represent a DNSResponse
029 *
030 */
031 public class DNSResponse {
032
033 private List<String> response;
034
035 private TimeoutException exception;
036
037 public DNSResponse(TimeoutException exception) {
038 this.exception = exception;
039 this.response = null;
040 }
041
042 public DNSResponse(List<String> response) {
043 this.exception = null;
044 this.response = response;
045 }
046
047 /**
048 * Returns the DNS response
049 *
050 * @return the dns repsonse
051 * @throws TimeoutException get thrown if an timeout was returned while tried to
052 * process a dns request
053 */
054 public List<String> getResponse() throws TimeoutException {
055 if (exception != null) {
056 throw exception;
057 } else {
058 return response;
059 }
060 }
061
062 /**
063 * @see java.lang.Object#toString()
064 */
065 public String toString() {
066 if (exception != null) {
067 return "EXCEPTION!";
068 } else if (response != null) {
069 return response.toString();
070 } else {
071 return "NULL?";
072 }
073 }
074 }