001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.mail.activation; 019 020import java.io.IOException; 021import java.io.InputStream; 022import java.io.OutputStream; 023 024import javax.activation.DataSource; 025 026/** 027 * A JavaBeans Activation Framework {@link DataSource} specialized for {@link InputStream}. 028 * <p> 029 * Copied from <a href="https://cxf.apache.org/">Apache CXF</a> and modified. 030 * </p> 031 * 032 * @since 1.6.0 033 */ 034public final class InputStreamDataSource implements DataSource { 035 036 /** 037 * Default content type documented in {@link DataSource#getContentType()}. 038 */ 039 private static final String DEFAULT_CONTENT_TYPE = "application/octet-stream"; 040 private final String contentType; 041 private final InputStream inputStream; 042 private final String name; 043 044 /** 045 * Constructs a new instance. 046 * 047 * @param inputStream An input stream. 048 * @param contentType A content type. 049 */ 050 public InputStreamDataSource(final InputStream inputStream, final String contentType) { 051 this(inputStream, contentType, null); 052 } 053 054 /** 055 * Constructs a new instance. 056 * 057 * @param inputStream An input stream. 058 * @param contentType A content type. 059 * @param name A name. 060 */ 061 public InputStreamDataSource(final InputStream inputStream, final String contentType, final String name) { 062 this.inputStream = inputStream; 063 this.contentType = contentType != null ? contentType : DEFAULT_CONTENT_TYPE; 064 this.name = name; 065 } 066 067 @Override 068 public String getContentType() { 069 return contentType; 070 } 071 072 @Override 073 public InputStream getInputStream() throws IOException { 074 return inputStream; 075 } 076 077 @Override 078 public String getName() { 079 return name; 080 } 081 082 /** 083 * Always throws {@link UnsupportedOperationException}. 084 * 085 * @return Always throws {@link UnsupportedOperationException}. 086 * @throws UnsupportedOperationException Always throws {@link UnsupportedOperationException}. 087 */ 088 @Override 089 public OutputStream getOutputStream() { 090 throw new UnsupportedOperationException(); 091 } 092 093}