/**
* Copyright 2011 Marco Berri - marcoberri@gmail.com
*
* 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 it.marcoberri.mbmeteo.action;
import com.github.jmkgreen.morphia.Datastore;
import com.google.gson.Gson;
import it.marcoberri.mbmeteo.helper.ConfigurationHelper;
import it.marcoberri.mbmeteo.helper.MongoConnectionHelper;
import it.marcoberri.mbmeteo.model.Meteolog;
import it.marcoberri.mbmeteo.utils.Log4j;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author Marco Berri <marcoberri@gmail.com>
*/
public class Download extends HttpServlet {
/**
*
*/
protected final org.apache.log4j.Logger log = Log4j.getLogger("mbmeteo", ConfigurationHelper.prop.getProperty("log.path"), Log4j.ROTATE_DAILY);
/**
* Processes requests for both HTTP
* <code>GET</code> and
* <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
log.debug("start : " + this.getClass().getName());
final Datastore ds = MongoConnectionHelper.ds;
final List<Meteolog> meteoLogList = ds.find(Meteolog.class).asList();
final Map params = request.getParameterMap();
String format = "csv";
if (params.containsKey("format")) {
final String s[] = (String[]) params.get("format");
format = s[0];
}
if (format.equalsIgnoreCase("csv")) {
// toJson
String bigCsv = "time;absPressure;T;Wind dir;gust;gust level;DewPoint;\n";
for (Meteolog m : meteoLogList) {
bigCsv += m.getTime() + ";";
bigCsv += m.getAbsolutePressure() + ";";
bigCsv += m.getOutdoorTemperature() + ";";
bigCsv += m.getDirection() + ";";
bigCsv += m.getGust() + ";";
bigCsv += m.getGustLevel() + ";";
bigCsv += m.getDewpoint() + ";";
bigCsv += "\n;";
//etc..etc..
}
PrintWriter out = response.getWriter();
response.setContentType("application/csv");
response.setHeader("Content-Disposition", "attachment; filename=\"result.csv\"");
out.println(bigCsv);
} else if (format.equalsIgnoreCase("json")) {
Gson gson = new Gson();
PrintWriter out = response.getWriter();
response.setContentType("application/json");
response.setHeader("Content-Disposition", "attachment; filename=\"result.json\"");
out.println(gson.toJson(meteoLogList));
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP
* <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP
* <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Download Data in Excel Format";
}// </editor-fold>
}