001// Copyright 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.multipart; 016 017import org.apache.tapestry.request.IUploadFile; 018 019/** 020 * Responsible for detecting and processing file upload requests, using Jakarta 021 * Commons FileUpload. Implementations of this service typically use the 022 * threaded service lifecycle model. 023 * 024 * @author Howard M. Lewis Ship 025 * @since 4.0 026 */ 027public interface MultipartDecoder { 028 029 /** 030 * Gets a file upload with the given name, or returns null if no such file 031 * upload was in the request. 032 */ 033 034 public IUploadFile getFileUpload(String parameterName); 035 036 /** 037 * Cleans up any temporary resources created during the request processing. 038 * This typically includes temporary files used to contain uploaded file 039 * content. 040 */ 041 042 void cleanup(); 043}