/* * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/methods/multipart/PartSource.java,v 1.6 2004/04/18 23:51:37 jsdever Exp $ * $Revision: 480424 $ * $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $ * * ==================================================================== * *  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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation.  For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.commons.httpclient.methods.multipart;import java.io.IOException;import java.io.InputStream;/** * An interface for providing access to data when posting MultiPart messages. *  * @see FilePart *  * @author <a href="mailto:becke@u.washington.edu">Michael Becke</a> *    * @since 2.0  */public interface PartSource {    /**     * Gets the number of bytes contained in this source.     *      * @return a value >= 0     */    long getLength();        /**     * Gets the name of the file this source represents.     *      * @return the fileName used for posting a MultiPart file part     */    String getFileName();        /**     * Gets a new InputStream for reading this source.  This method can be      * called more than once and should therefore return a new stream every     * time.     *      * @return a new InputStream     *      * @throws IOException if an error occurs when creating the InputStream     */    InputStream createInputStream() throws IOException;}