/**
* 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 com.google.gson.GsonBuilder;
import it.marcoberri.mbmeteo.helper.ConfigurationHelper;
import it.marcoberri.mbmeteo.helper.MongoConnectionHelper;
import it.marcoberri.mbmeteo.utils.Log4j;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.TreeMap;
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 GetDistinctTime 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 PrintWriter out = response.getWriter();
try {
final Datastore ds = MongoConnectionHelper.ds;
final List<Date> datesResult = ds.getDB().getCollection("Meteolog").distinct("time");
final TreeMap<String, Date> dates = new TreeMap<String, Date>();
final DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
for (Date d : datesResult) {
try {
dates.put(df.format(d), d);
} catch (Exception e) {
log.error("error on data : " + d,e);
continue;
}
}
final GsonBuilder gsonBuilder = new GsonBuilder();
gsonBuilder.setDateFormat("dd-MM-yyyy");
final Gson gson = gsonBuilder.create();
response.setContentType("application/json");
response.setHeader("Content-Disposition", "attachment; filename=\"result.json\"");
out.println(gson.toJson(dates));
} finally {
out.close();
}
}
// <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 "Short description";
}// </editor-fold>
}