    001// Copyright 2007, 2008 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.tapestry5.upload.internal.services;
    016
    017import org.apache.commons.fileupload.servlet.ServletFileUpload;
    018import org.apache.tapestry5.services.HttpServletRequestFilter;
    019import org.apache.tapestry5.services.HttpServletRequestHandler;
    020import org.apache.tapestry5.upload.services.MultipartDecoder;
    021
    022import javax.servlet.http.HttpServletRequest;
    023import javax.servlet.http.HttpServletResponse;
    024import java.io.IOException;
    025
    026/**
    027 * Filter that decodes an incoming multipart request.
    028 */
    029public class MultipartServletRequestFilter implements HttpServletRequestFilter
    030{
    031    private final MultipartDecoder decoder;
    032
    033    public MultipartServletRequestFilter(MultipartDecoder multipartDecoder)
    034    {
    035        decoder = multipartDecoder;
    036    }
    037
    038    @Override
    039    public boolean service(HttpServletRequest request, HttpServletResponse response, HttpServletRequestHandler handler)
    040            throws IOException
    041    {
    042        HttpServletRequest newRequest = ServletFileUpload.isMultipartContent(request) ? decoder.decode(
    043                request) : request;
    044
    045        return handler.service(newRequest, response);
    046    }
    047
    048}