| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.cocoon.mail.datasource; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.cocoon.servlet.multipart.Part; |
| |
| /** |
| * The FilePartDataSource class provides an object, that wraps a |
| * Cocoon {@link Part} object in a DataSource interface. |
| * |
| * @see javax.activation.DataSource |
| * @version $Id$ |
| */ |
| public class FilePartDataSource extends AbstractDataSource { |
| |
| private Part part; |
| |
| /** |
| * Creates a new instance of FilePartDataSource from an |
| * {@link Part} object. |
| * @param part An {@link Part} object. |
| */ |
| public FilePartDataSource(Part part) { |
| this(part,null,null); |
| } |
| |
| /** |
| * Creates a new instance of FilePartDataSource from an |
| * {@link Part} object. |
| * @param part An {@link Part} object. |
| */ |
| public FilePartDataSource(Part part, String type, String name) { |
| super(getName(name, part), getType(type, part)); |
| this.part = part; |
| } |
| |
| /** |
| * Determines the name for this <code>DataSource</code> object. |
| * It is first non empty value from the list: |
| * <ul> |
| * <li>The value of <code>name</code> argument. |
| * <li>The value returned by the {@link Part#getFileName()}. |
| * <li>"attachment". |
| * </ul> |
| * |
| * @return the name for this <code>DataSource</code> |
| */ |
| private static String getName(String name, Part part) { |
| if (isNullOrEmpty(name)) { |
| name = part.getFileName(); |
| if (isNullOrEmpty(name)) { |
| name = "attachment"; |
| } |
| } |
| |
| return name; |
| } |
| |
| /** |
| * Determines the mime type for this <code>DataSource</code> object. |
| * It is first non empty value from the list: |
| * <ul> |
| * <li>The value of <code>type</code> argument. |
| * <li>The value returned by {@link Part#getMimeType()}. |
| * <li>"application/octet-stream". |
| * </ul> |
| * |
| * @return The content type (mime type) of this <code>DataSource</code> object. |
| */ |
| private static String getType(String type, Part part) { |
| if (isNullOrEmpty(type)) { |
| type = part.getMimeType(); |
| if (isNullOrEmpty(type)) { |
| type = "application/octet-stream"; |
| } |
| } |
| |
| return type; |
| } |
| |
| /** |
| * The InputStream object obtained from {@link Part#getInputStream()} |
| * object. |
| * |
| * @throws java.io.IOException if an I/O error occurs. |
| * @return The InputStream object for this <code>DataSource</code> object. |
| */ |
| public InputStream getInputStream() throws IOException { |
| try { |
| return part.getInputStream(); |
| } catch (IOException e) { |
| // Sun's SMTPTransport looses cause exception. Log it now. |
| if (getLogger() != null) { |
| getLogger().warn("Unable to obtain input stream for '" + part.getUploadName() + "'", e); |
| } |
| throw e; |
| } |
| } |
| } |