Java tutorial
/**Copyright 2010 Research Studios Austria Forschungsgesellschaft mBH * * This file is part of easyrec. * * easyrec is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * easyrec is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with easyrec. If not, see <http://www.gnu.org/licenses/>. */ package org.easyrec.controller; import com.google.common.base.Strings; import org.easyrec.model.web.flot.FlotDataSet; import org.easyrec.model.web.flot.FlotSeries; import org.easyrec.service.domain.TypeMappingService; import org.easyrec.store.dao.web.StatisticsDAO; import org.easyrec.util.core.Security; import org.easyrec.utils.servlet.ServletUtils; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.AbstractController; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.awt.image.BufferedImage; import java.io.OutputStream; import java.util.Calendar; import java.util.HashMap; import java.util.Iterator; /** * This Controller creates diagramms for the monthly action overview. * * @author Peter Hlavac */ public class StatisticsController extends AbstractController { private StatisticsDAO statisticsDAO; private TypeMappingService typeMappingService; public void setStatisticsDAO(StatisticsDAO statisticsDAO) { this.statisticsDAO = statisticsDAO; } public void setTypeMappingService(TypeMappingService typeMappingService) { this.typeMappingService = typeMappingService; } /* (non-Javadoc) * @see org.springframework.web.servlet.mvc.AbstractController#handleRequestInternal(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) */ @Override protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { if (Security.isSignedIn(request)) { int tenant; int month; int year; boolean flot; String actionType = request.getParameter("actionType"); try { tenant = Integer.parseInt(request.getParameter("tenant")); month = Integer.parseInt(request.getParameter("month")); year = Integer.parseInt(request.getParameter("year")); flot = Integer.parseInt(request.getParameter("flot")) != 0; } catch (Exception e) { logger.warn(e); return null; } ModelAndView mav = new ModelAndView(); XYSeriesCollection dataset = new XYSeriesCollection(); FlotDataSet flotDataSet = new FlotDataSet(); Calendar from = Calendar.getInstance(); Calendar to = Calendar.getInstance(); from.set(year, month, Calendar.getInstance().getActualMinimum(Calendar.DAY_OF_MONTH), 0, 0, 0); to.set(year, month, from.getActualMaximum(Calendar.DAY_OF_MONTH), 23, 59, 59); Integer actionTypeId = null; Integer assocTypeId = null; if (!Strings.isNullOrEmpty(actionType)) { if ("CLICKS_ON_RECS".equals(actionType)) assocTypeId = 1001; else if ("CLICKS_ON_CHARTS".equals(actionType)) assocTypeId = 998; else actionTypeId = typeMappingService.getIdOfActionType(tenant, actionType); } HashMap<Integer, HashMap<Integer, Integer>> actionBundleMap = statisticsDAO.getActionBundleMap(tenant, from.getTimeInMillis(), to.getTimeInMillis(), actionTypeId, assocTypeId); Iterator<Integer> iterator = actionBundleMap.keySet().iterator(); while (iterator.hasNext()) { actionTypeId = iterator.next(); if (actionTypeId == 1001) actionType = "clicks on recommendations"; else if (actionTypeId == 998) actionType = "clicks on rankings"; else actionType = typeMappingService.getActionTypeById(tenant, actionTypeId).toLowerCase() + " actions"; XYSeries xySeries = new XYSeries(actionType); FlotSeries flotSeries = new FlotSeries(); flotSeries.setTitle(actionType); for (int i = 1; i <= 31; i++) { Integer y = actionBundleMap.get(actionTypeId).get(i); xySeries.add(i, y != null ? y : 0); flotSeries.add(i, y != null ? y : 0); } //mav.addObject("data",flotDataSet.toString()); dataset.addSeries(xySeries); flotDataSet.add(flotSeries); } // create datapoints that are rendered in the clients browser // return array or html side that renders array if (flot) { boolean onlyData = (ServletUtils.getSafeParameter(request, "onlyData", 0) != 0); if (onlyData) { mav.setViewName("flot/dataOutput"); } else { mav.setViewName("flot/flotPlot"); } mav.addObject("data", flotDataSet.toString()); mav.addObject("flotDataSet", flotDataSet.getData()); mav.addObject("noActions", flotDataSet.getData().isEmpty()); return mav; // create a png } else { JFreeChart action_chart = ChartFactory.createXYLineChart("", "actions", "days", dataset, PlotOrientation.VERTICAL, true, // show legend true, // show tooltips false); // show urls XYPlot plot = action_chart.getXYPlot(); ValueAxis axis = plot.getDomainAxis(); axis.setRange(1, 31); plot.setDomainAxis(axis); BufferedImage bi = action_chart.createBufferedImage(300, 200); byte[] bytes = ChartUtilities.encodeAsPNG(bi); if (bytes != null & !flot) { OutputStream os = response.getOutputStream(); response.setContentType("image/png"); response.setContentLength(bytes.length); os.write(bytes); os.close(); } } return null; } else { return Security.redirectHome(request, response); } } }