server/src/main/java/org/apache/hupa/server/servlet/UploadAttachmentServlet.java

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package org.apache.hupa.server.servlet;

import gwtupload.server.UploadAction;
import gwtupload.server.exceptions.UploadActionException;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.logging.Log;
import org.apache.hupa.server.utils.SessionUtils;

import com.google.inject.Inject;

/**
 * Servlet which handle uploads. The uploaded files will get added to a temporary registry to get looked-up
 * later.
 *
 *
 */
public class UploadAttachmentServlet extends UploadAction{

    private static final long serialVersionUID = 4936687307133529124L;



    private Log logger;

    @Inject
    public UploadAttachmentServlet(Log logger) {
        this.logger = logger;
    }

    @Override
    public String executeAction(HttpServletRequest request, List<FileItem> sessionFiles) throws UploadActionException {

        logger.info("Executing Action, files in session: " + sessionFiles.size() + " previous files in registry: " + SessionUtils.getSessionRegistry(logger, request.getSession()).size());
        // save file items in the user session's registry
        for(FileItem item: sessionFiles)
            SessionUtils.getSessionRegistry(logger, request.getSession()).add(item);


        // remove items from session but not remove the data from disk or memory
        removeSessionFileItems(request, false);
        return null;
    }

    @Override
    public void removeItem(HttpServletRequest request, FileItem item)  throws UploadActionException {
        SessionUtils.getSessionRegistry(logger, request.getSession()).remove(item);
    }
}