com.etest.view.tq.charts.ItemAnalysisGraphicalViewAll.java Source code

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Here is the source code for com.etest.view.tq.charts.ItemAnalysisGraphicalViewAll.java

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package com.etest.view.tq.charts;

import com.etest.service.CurriculumService;
import com.etest.service.ReportService;
import com.etest.serviceprovider.CurriculumServiceImpl;
import com.etest.serviceprovider.ReportServiceImpl;
import com.etest.utilities.CommonUtilities;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;
import org.vaadin.addon.JFreeChartWrapper;

/**
 *
 * @author jetdario
 */
public class ItemAnalysisGraphicalViewAll extends Window {

    CurriculumService cs = new CurriculumServiceImpl();
    ReportService rs = new ReportServiceImpl();

    private int curriculumId;
    int percentage = 0;

    String[] difficulty = { "Very Difficult", "Difficult", "Average", "Easy", "Very Easy" };
    String[] discrimination = { "Poor Items", "Marginal Items", "Reasonably Good Item", "Very Good Item" };

    public ItemAnalysisGraphicalViewAll(int curriculumId) {
        this.curriculumId = curriculumId;

        setModal(true);
        setHeight("100%");

        VerticalLayout v = new VerticalLayout();
        v.setMargin(true);
        v.setSpacing(true);

        Label title = new Label();
        title.setCaption("Item Analysis of " + cs.getCurriculumById(getCurriculumId()).getSubject());
        title.setWidthUndefined();
        v.addComponent(title);
        v.setComponentAlignment(title, Alignment.TOP_CENTER);

        HorizontalLayout h = new HorizontalLayout();
        h.setSpacing(true);

        h.addComponent(getDiscriminationIndexChart());
        h.addComponent(getDifficultIndexChart());

        h.setWidthUndefined();
        h.setHeightUndefined();

        v.addComponent(h);
        v.setWidthUndefined();

        setContent(v);
        getContent().setWidthUndefined();
        //        getContent().setHeightUndefined();
        center();
    }

    JFreeChartWrapper getDiscriminationIndexChart() {
        DefaultPieDataset discriminationDataSet = new DefaultPieDataset();
        for (String s : discrimination) {
            switch (s) {
            case "Poor Items": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDiscriminationIndex(getCurriculumId(), 0, 0.19));
                discriminationDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            case "Marginal Items": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDiscriminationIndex(getCurriculumId(), 0.20, 0.29));
                discriminationDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            case "Reasonably Good Item": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDiscriminationIndex(getCurriculumId(), 0.30, 0.39));
                discriminationDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            default: {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDiscriminationIndex(getCurriculumId(), 0.40, 1));
                discriminationDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            }

        }

        JFreeChart discriminationIndexChart = ChartFactory.createPieChart("Discrimination Index",
                discriminationDataSet, true, true, false);

        return new ReportChartWrapper(discriminationIndexChart, "550px", "550px");
    }

    JFreeChartWrapper getDifficultIndexChart() {
        DefaultPieDataset difficultyDataSet = new DefaultPieDataset();
        for (String s : difficulty) {
            switch (s) {
            case "Very Difficult": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDifficultyIndex(getCurriculumId(), 0, 0.19));
                difficultyDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            case "Difficult": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDifficultyIndex(getCurriculumId(), 0.20, 0.39));
                difficultyDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            case "Average": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDifficultyIndex(getCurriculumId(), 0.40, 0.60));
                difficultyDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            case "Easy": {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDifficultyIndex(getCurriculumId(), 0.61, 0.80));
                difficultyDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            default: {
                percentage = (int) calculatePercentageOfAnalyzedItems(
                        rs.getTotalAnalyzedItemsBySubject(getCurriculumId()),
                        rs.getTotalItemByDifficultyIndex(getCurriculumId(), 0.81, 1));
                difficultyDataSet.setValue(s + " " + percentage + "%", percentage);
                break;
            }
            }

        }

        JFreeChart difficultIndexChart = ChartFactory.createPieChart("Difficulty Index", difficultyDataSet, true,
                true, false);

        return new ReportChartWrapper(difficultIndexChart, "550px", "550px");
    }

    double calculatePercentageOfAnalyzedItems(int totalAnalyzedItems, int totalItemsPerIndex) {
        return CommonUtilities.roundOffToWholeNumber(((double) totalItemsPerIndex / totalAnalyzedItems) * 100);
    }

    int getCurriculumId() {
        return curriculumId;
    }
}