/*
 * (c) Copyright 2010 Epimorphics Ltd.
 * All rights reserved.
 * [See end of file]
 */

package org.openjena.fuseki.server;

import java.io.IOException ;
import java.io.InputStream ;

import javax.servlet.http.HttpServlet ;
import javax.servlet.http.HttpServletRequest ;
import javax.servlet.http.HttpServletResponse ;

import org.apache.commons.fileupload.FileItemIterator ;
import org.apache.commons.fileupload.FileItemStream ;
import org.apache.commons.fileupload.servlet.ServletFileUpload ;
import org.apache.commons.fileupload.util.Streams ;
import org.openjena.atlas.lib.Sink ;
import org.openjena.fuseki.http.HttpSC ;
import org.openjena.riot.RiotReader ;
import org.openjena.riot.lang.LangRIOT ;
import org.openjena.riot.out.SinkTripleOutput ;

import com.hp.hpl.jena.graph.Triple ;

public class FileUpload extends HttpServlet
{

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException
    {
        boolean isMultipart = ServletFileUpload.isMultipartContent(request);
        if ( ! isMultipart )
        {
            response.sendError(HttpSC.BAD_REQUEST_400 , "Not a file upload") ;
            return ;
        }
        
        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload();

        try {

            // Parse the request
            FileItemIterator iter = upload.getItemIterator(request);
            while (iter.hasNext()) {
                FileItemStream item = iter.next();
                String name = item.getFieldName();
                InputStream stream = item.openStream();
                if (item.isFormField()) {
                    System.out.println("Form field " + name + " with value "
                                       + Streams.asString(stream) + " detected.");
                } else {
                    System.out.println("File field " + name + " with file name "
                                       + item.getName() + " detected.");
                    // Process the input stream
                    response.setContentType("text/plain") ;

                    Sink<Triple> sink = new SinkTripleOutput(response.getOutputStream()) ;
                    LangRIOT parser = RiotReader.createParserTurtle(stream, null, sink) ;
                    parser.parse() ;
                    
                    response.getOutputStream().println("----------------------") ;
                }
            }
        } catch (Exception ex)
        {
            ex.printStackTrace(System.err) ;
            response.sendError(HttpSC.INTERNAL_SERVER_ERROR_500, ex.getMessage()) ;
            return ;
        }
    }
}

/*
 * (c) Copyright 2010 Epimorphics Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */