org.openmrs.contrib.metadatarepository.webapp.controller.ReloadController.java Source code

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Here is the source code for org.openmrs.contrib.metadatarepository.webapp.controller.ReloadController.java
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/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */

package org.openmrs.contrib.metadatarepository.webapp.controller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openmrs.contrib.metadatarepository.webapp.listener.StartupListener;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

/**
 * This class is used to reload the drop-downs initialized in the
 * StartupListener.
 *
 * <p>
 * <a href="ReloadController.java.html"><i>View Source</i></a>
 * </p>
 *
 * @author <a href="mailto:matt@raibledesigns.com">Matt Raible</a>
 */
@Controller
@RequestMapping("/admin/reload*")
public class ReloadController {
    private transient final Log log = LogFactory.getLog(ReloadController.class);

    @RequestMapping(method = RequestMethod.GET)
    @SuppressWarnings("unchecked")
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("Entering 'execute' method");
        }

        StartupListener.setupContext(request.getSession().getServletContext());

        String referer = request.getHeader("Referer");

        if (referer != null) {
            log.info("reload complete, reloading user back to: " + referer);
            List<String> messages = (List) request.getSession().getAttribute(BaseFormController.MESSAGES_KEY);

            if (messages == null) {
                messages = new ArrayList();
            }

            messages.add("Reloading options completed successfully.");
            request.getSession().setAttribute(BaseFormController.MESSAGES_KEY, messages);

            response.sendRedirect(response.encodeRedirectURL(referer));
            return null;
        } else {
            response.setContentType("text/html");

            PrintWriter out = response.getWriter();

            out.println("<html>");
            out.println("<head>");
            out.println("<title>Context Reloaded</title>");
            out.println("</head>");
            out.println("<body bgcolor=\"white\">");
            out.println("<script type=\"text/javascript\">");
            out.println("alert('Context Reload Succeeded! Click OK to continue.');");
            out.println("history.back();");
            out.println("</script>");
            out.println("</body>");
            out.println("</html>");
        }

        return null;
    }

}