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 }