| /* |
| * 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 java.io.OutputStream; |
| import javax.activation.DataSource; |
| |
| import org.apache.avalon.framework.logger.AbstractLogEnabled; |
| |
| /** |
| * The AbstractDataSource class is a base class for other {@link DataSource} |
| * implementation. |
| * |
| * @version $Id$ |
| */ |
| public abstract class AbstractDataSource extends AbstractLogEnabled |
| implements DataSource { |
| |
| private String name; |
| private String contentType; |
| |
| |
| public AbstractDataSource() { |
| } |
| |
| /** |
| * @param name Name of the content part |
| * @param type Mime type of the content |
| */ |
| public AbstractDataSource(String name, String type) { |
| this.name = name; |
| this.contentType = type; |
| if (isNullOrEmpty(this.name)) { |
| this.name = null; |
| } |
| if (isNullOrEmpty(this.contentType)) { |
| this.contentType = null; |
| } |
| } |
| |
| /** |
| * Check String for null or empty. |
| * @param str |
| * @return true if str is null, empty string, or equals "null" |
| */ |
| protected static boolean isNullOrEmpty(String str) { |
| return str == null || "".equals(str) || "null".equals(str); |
| } |
| |
| /** |
| * Returns the name for this <code>DataSource</code> object. |
| */ |
| public String getName() { |
| return this.name; |
| } |
| |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| /** |
| * @return The content type (mime type) of this <code>DataSource</code> object. |
| */ |
| public String getContentType() { |
| return this.contentType; |
| } |
| |
| public void setContentType(String contentType) { |
| this.contentType = contentType; |
| } |
| |
| /** |
| * Get the <code>InputStream</code> for this DataSource. |
| */ |
| public abstract InputStream getInputStream() throws IOException; |
| |
| /** |
| * Not implemented. Throws <code>IOException</code>. |
| * @throws java.io.IOException since unimplemented |
| */ |
| public OutputStream getOutputStream() throws IOException { |
| throw new IOException("no data sink available"); |
| } |
| } |