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