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 020package org.apache.james.mime4j.message; 021 022import org.apache.james.mime4j.dom.Multipart; 023import org.apache.james.mime4j.util.ByteSequence; 024import org.apache.james.mime4j.util.ContentUtil; 025 026/** 027 * Default implementation of {@link Multipart}. 028 */ 029public class MultipartImpl extends AbstractMultipart { 030 031 private ByteSequence preamble; 032 private transient String preambleStrCache; 033 private transient boolean preambleComputed = false; 034 private ByteSequence epilogue; 035 private transient String epilogueStrCache; 036 private transient boolean epilogueComputed = false; 037 038 /** 039 * Creates a new empty <code>Multipart</code> instance. 040 */ 041 public MultipartImpl(String subType) { 042 super(subType); 043 preamble = null; 044 preambleStrCache = null; 045 preambleComputed = true; 046 epilogue = null; 047 epilogueStrCache = null; 048 epilogueComputed = true; 049 } 050 051 // package private for now; might become public someday 052 public ByteSequence getPreambleRaw() { 053 return preamble; 054 } 055 056 public void setPreambleRaw(ByteSequence preamble) { 057 this.preamble = preamble; 058 this.preambleStrCache = null; 059 this.preambleComputed = false; 060 } 061 062 /** 063 * Gets the preamble. 064 * 065 * @return the preamble. 066 */ 067 @Override 068 public String getPreamble() { 069 if (!preambleComputed) { 070 preambleStrCache = preamble != null ? ContentUtil.decode(preamble) : null; 071 preambleComputed = true; 072 } 073 return preambleStrCache; 074 } 075 076 /** 077 * Sets the preamble. 078 * 079 * @param preamble 080 * the preamble. 081 */ 082 @Override 083 public void setPreamble(String preamble) { 084 this.preamble = preamble != null ? ContentUtil.encode(preamble) : null; 085 this.preambleStrCache = preamble; 086 this.preambleComputed = true; 087 } 088 089 // package private for now; might become public someday 090 public ByteSequence getEpilogueRaw() { 091 return epilogue; 092 } 093 094 public void setEpilogueRaw(ByteSequence epilogue) { 095 this.epilogue = epilogue; 096 this.epilogueStrCache = null; 097 this.epilogueComputed = false; 098 } 099 100 /** 101 * Gets the epilogue. 102 * 103 * @return the epilogue. 104 */ 105 @Override 106 public String getEpilogue() { 107 if (!epilogueComputed) { 108 epilogueStrCache = epilogue != null ? ContentUtil.decode(epilogue) : null; 109 epilogueComputed = true; 110 } 111 return epilogueStrCache; 112 } 113 114 /** 115 * Sets the epilogue. 116 * 117 * @param epilogue 118 * the epilogue. 119 */ 120 @Override 121 public void setEpilogue(String epilogue) { 122 this.epilogue = epilogue != null ? ContentUtil.encode(epilogue) : null; 123 this.epilogueStrCache = epilogue; 124 this.epilogueComputed = true; 125 } 126 127}