com.w4t.engine.requests.FileUploadRequest.java Source code

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Here is the source code for com.w4t.engine.requests.FileUploadRequest.java

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/*******************************************************************************
 * Copyright (c) 2002-2006 Innoopract Informationssysteme GmbH.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Innoopract Informationssysteme GmbH - initial API and implementation
 ******************************************************************************/
package com.w4t.engine.requests;

import java.util.*;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

import org.apache.commons.fileupload.*;
import org.eclipse.rwt.internal.*;

import com.w4t.engine.util.ServletExceptionAdapter;

/** <p>Special HttpServletRequest wrapper for handling file 
 *  upload requests.</p> */
public class FileUploadRequest extends HttpServletRequestWrapper implements IFileUploadRequest {

    private static final String SYSTEM_TEMP_DIR = System.getProperty("java.io.tmpdir");

    private Hashtable parameters = new Hashtable();

    public FileUploadRequest(final HttpServletRequest request) throws ServletException {
        super(request);
        IConfiguration configuration = ConfigurationReader.getConfiguration();
        IFileUpload fileUpload = configuration.getFileUpload();
        UploadRequestFileItemFactory factory = new UploadRequestFileItemFactory();
        DiskFileUpload upload = new DiskFileUpload(factory);
        upload.setSizeThreshold(fileUpload.getMaxMemorySize());
        upload.setSizeMax(fileUpload.getMaxMemorySize());
        upload.setRepositoryPath(FileUploadRequest.SYSTEM_TEMP_DIR);
        try {
            List items = upload.parseRequest(request);
            Iterator iter = items.iterator();
            while (iter.hasNext()) {
                FileItem item = (FileItem) iter.next();
                parameters.put(item.getFieldName(), item);
            }

        } catch (FileUploadException e) {
            throw new ServletExceptionAdapter(e);
        }
    }

    public String getParameter(String name) {
        String result = null;
        FileItem item = (FileItem) parameters.get(name);
        if (item != null && item.isFormField()) {
            result = item.getString();
        }
        return result;
    }

    public FileItem getFileItem(final String name) {
        FileItem result = null;
        FileItem item = (FileItem) parameters.get(name);
        if (item != null && !item.isFormField()) {
            result = item;
        }
        return result;

    }

    public Enumeration getParameterNames() {
        return parameters.keys();
    }
}