| /* |
| * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.activation; |
| |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.IOException; |
| |
| /** |
| * The DataSource interface provides the JavaBeans Activation Framework |
| * with an abstraction of an arbitrary collection of data. It |
| * provides a type for that data as well as access |
| * to it in the form of <code>InputStreams</code> and |
| * <code>OutputStreams</code> where appropriate. |
| * |
| * @since 1.6 |
| */ |
| |
| public interface DataSource { |
| |
| /** |
| * This method returns an <code>InputStream</code> representing |
| * the data and throws the appropriate exception if it can |
| * not do so. Note that a new <code>InputStream</code> object must be |
| * returned each time this method is called, and the stream must be |
| * positioned at the beginning of the data. |
| * |
| * @return an InputStream |
| * @exception IOException for failures creating the InputStream |
| */ |
| public InputStream getInputStream() throws IOException; |
| |
| /** |
| * This method returns an <code>OutputStream</code> where the |
| * data can be written and throws the appropriate exception if it can |
| * not do so. Note that a new <code>OutputStream</code> object must |
| * be returned each time this method is called, and the stream must |
| * be positioned at the location the data is to be written. |
| * |
| * @return an OutputStream |
| * @exception IOException for failures creating the OutputStream |
| */ |
| public OutputStream getOutputStream() throws IOException; |
| |
| /** |
| * This method returns the MIME type of the data in the form of a |
| * string. It should always return a valid type. It is suggested |
| * that getContentType return "application/octet-stream" if the |
| * DataSource implementation can not determine the data type. |
| * |
| * @return the MIME Type |
| */ |
| public String getContentType(); |
| |
| /** |
| * Return the <i>name</i> of this object where the name of the object |
| * is dependant on the nature of the underlying objects. DataSources |
| * encapsulating files may choose to return the filename of the object. |
| * (Typically this would be the last component of the filename, not an |
| * entire pathname.) |
| * |
| * @return the name of the object. |
| */ |
| public String getName(); |
| } |