edu.lternet.pasta.portal.ReserveIdentifierDeleteServlet.java Source code

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Here is the source code for edu.lternet.pasta.portal.ReserveIdentifierDeleteServlet.java

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/*
 *
 * $Date$
 * $Author$
 * $Revision$
 *
 * Copyright 2011,2012 the University of New Mexico.
 *
 * This work was supported by National Science Foundation Cooperative
 * Agreements #DEB-0832652 and #DEB-0936498.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 */

package edu.lternet.pasta.portal;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.log4j.Logger;

import edu.lternet.pasta.client.DataPackageManagerClient;

/**
 * @author Duane Costa
 * 
 * Servlet to manage end user deletion (i.e. release) of a reservation on 
 * a data package identifier. When an end user deletes (or releases) their
 * reservation on a data package identifier, the reservation record is 
 * deleted from the reservations table in PASTA.
 */
public class ReserveIdentifierDeleteServlet extends DataPortalServlet {

    /**
     * Class variables
     */

    private static final Logger logger = Logger
            .getLogger(edu.lternet.pasta.portal.ReserveIdentifierDeleteServlet.class);
    private static final long serialVersionUID = 1L;
    private static final String forward = "./reservations.jsp";

    /**
     * Constructor of the object.
     */
    public ReserveIdentifierDeleteServlet() {
        super();
    }

    /**
     * The doGet method of the servlet. <br>
     * 
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request
     *          the request send by the client to the server
     * @param response
     *          the response send by the server to the client
     * @throws ServletException
     *           if an error occurred
     * @throws IOException
     *           if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // Pass request onto "doPost".
        doPost(request, response);
    }

    /**
     * The doPost method of the servlet. <br>
     * 
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request
     *          the request send by the client to the server
     * @param response
     *          the response send by the server to the client
     * @throws ServletException
     *           if an error occurred
     * @throws IOException
     *           if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String deleteMessage = null;
        String messageType = null;
        HttpSession httpSession = request.getSession();

        String uid = (String) httpSession.getAttribute("uid");

        if (uid == null || uid.isEmpty())
            uid = "public";

        String docid = request.getParameter("docid");
        if (docid != null) {
            String[] tokens = docid.split("\\.");
            if (tokens != null && tokens.length >= 2) {
                String scope = tokens[0];
                String identifierStr = tokens[1];
                Integer identifier = Integer.parseInt(identifierStr);

                if (uid.equals("public")) {
                    messageType = "warning";
                    request.setAttribute("message", LOGIN_WARNING);
                } else {
                    try {
                        DataPackageManagerClient dpmc = new DataPackageManagerClient(uid);
                        dpmc.deleteReservation(scope, identifier);
                        deleteMessage = String.format(
                                "Reservation for data package identifier '<b>%s</b>' has been deleted.", docid);
                        messageType = "info";
                    } catch (Exception e) {
                        handleDataPortalError(logger, e);
                    }
                }
            }
        }

        request.setAttribute("deleteMessage", deleteMessage);
        request.setAttribute("messageType", messageType);

        RequestDispatcher requestDispatcher = request.getRequestDispatcher(forward);
        requestDispatcher.forward(request, response);

    }

    /**
     * Initialization of the servlet. <br>
     * 
     * @throws ServletException
     *           if an error occurs
     */
    public void init() throws ServletException {
        PropertiesConfiguration options = ConfigurationListener.getOptions();
    }

}