DynamicReports Cross-tab row, column ordering by value field

CrosstabGroupTest.java

package enkh.mon.java.codes.testing

import java.util.ArrayList;
import java.util.List;
import net.sf.dynamicreports.examples.Templates;
import net.sf.dynamicreports.jasper.builder.JasperReportBuilder;
import net.sf.dynamicreports.report.base.expression.AbstractSimpleExpression;
import net.sf.dynamicreports.report.base.expression.AbstractValueFormatter;
import static net.sf.dynamicreports.report.builder.DynamicReports.asc;
import static net.sf.dynamicreports.report.builder.DynamicReports.cmp;
import static net.sf.dynamicreports.report.builder.DynamicReports.ctab;
import static net.sf.dynamicreports.report.builder.DynamicReports.desc;
import static net.sf.dynamicreports.report.builder.DynamicReports.field;
import static net.sf.dynamicreports.report.builder.DynamicReports.report;
import static net.sf.dynamicreports.report.builder.DynamicReports.stl;
import net.sf.dynamicreports.report.builder.SortBuilder;
import net.sf.dynamicreports.report.builder.component.Components;
import net.sf.dynamicreports.report.builder.crosstab.CrosstabBuilder;
import net.sf.dynamicreports.report.builder.crosstab.CrosstabColumnGroupBuilder;
import net.sf.dynamicreports.report.builder.crosstab.CrosstabMeasureBuilder;
import net.sf.dynamicreports.report.builder.crosstab.CrosstabRowGroupBuilder;
import net.sf.dynamicreports.report.builder.expression.AbstractComplexExpression;
import net.sf.dynamicreports.report.builder.style.StyleBuilder;
import net.sf.dynamicreports.report.constant.Calculation;
import net.sf.dynamicreports.report.constant.HorizontalTextAlignment;
import net.sf.dynamicreports.report.constant.OrderType;
import net.sf.dynamicreports.report.constant.PageOrientation;
import net.sf.dynamicreports.report.constant.PageType;
import net.sf.dynamicreports.report.constant.VerticalTextAlignment;
import net.sf.dynamicreports.report.definition.ReportParameters;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;

/**
 *
 * @author Enkhbold Mainbayaryn
 */
public class CrosstabGroupTest {

    public JasperReportBuilder build() throws DRException {

        JasperReportBuilder report = report();

        // styles
        String reportFont = "Roboto";
        int cellPadding = 3;

        StyleBuilder headerStyleCenter = stl.style().setFontName(reportFont).setFontSize(10).setBold(true)
                .setBorder(stl.pen1Point()).setPadding(cellPadding)
                .setHorizontalTextAlignment(HorizontalTextAlignment.CENTER)
                .setVerticalTextAlignment(VerticalTextAlignment.MIDDLE);

        StyleBuilder rowStyleData = stl.style().setFontName(reportFont).setFontSize(10)
                .setBorder(stl.pen1Point()).setPadding(cellPadding)
                .setHorizontalTextAlignment(HorizontalTextAlignment.CENTER)
                .setVerticalTextAlignment(VerticalTextAlignment.MIDDLE);

        // row groups
//        CrosstabRowGroupBuilder<String> rowGroupItem = ctab.rowGroup("product", String.class).setShowTotal(false)
//                .setHeaderStyle(rowStyleData).setHeaderWidth(120);
        CrosstabRowGroupBuilder<String> rowGroupItem = ctab.rowGroup(new CTOrderExpression("rowOrder", "product")).setShowTotal(false).setHeaderStyle(rowStyleData).setHeaderWidth(120)
                .setHeaderValueFormatter(new CTOValueFormatter());

        CrosstabRowGroupBuilder<String> rowGroupUnit = ctab.rowGroup("unit", String.class).setShowTotal(false)
                .setHeaderStyle(rowStyleData).setHeaderWidth(50);
        CrosstabRowGroupBuilder<String> rowGroupDate = ctab.rowGroup("date", String.class).setShowTotal(false)
                .setHeaderStyle(rowStyleData).setHeaderWidth(50);

        // column groups
        CrosstabColumnGroupBuilder col_type = ctab.columnGroup(new CTOrderExpression("colOrder", "branch")).setTotalHeader("Total quantity")
                .setShowTotal(true).setHeaderStyle(rowStyleData);

        // measure
        CrosstabMeasureBuilder quantityMeasure = ctab.measure("", "amount", Double.class, Calculation.NOTHING).setTitleStyle(stl.style().setFontSize(0));

        CrosstabBuilder crosstab = ctab.crosstab()
                .setCellWidth(220)
                .addHeaderCell(cmp.horizontalList(
                        cmp.text("Product").setStyle(headerStyleCenter).setFixedWidth(120),
                        cmp.text("Unit").setStyle(headerStyleCenter).setFixedWidth(50),
                        cmp.text("Year").setStyle(headerStyleCenter).setFixedWidth(50))
                )
                .setCellStyle(rowStyleData).setCellWidth(60)
                .rowGroups(rowGroupItem, rowGroupUnit, rowGroupDate)
                .columnGroups(col_type)
                //                .setDataPreSorted(true)
                .measures(quantityMeasure);

        // data
        List<ProductQuantityData> dataList = new ArrayList<>();
        int row_Order = 1;
        int col_Order = 1;
        dataList.add(new ProductQuantityData("Water", "litre", "2016.02", "Branch 1", 50d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Water", "litre", "2017.02", "Branch 1", 150d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Water", "litre", "diff", "Branch 1", 100d, row_Order, col_Order));

        col_Order = 2;
        dataList.add(new ProductQuantityData("Water", "litre", "2016.02", "Branch 2", 150d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Water", "litre", "2017.02", "Branch 2", 140d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Water", "litre", "diff", "Branch 2", -10d, row_Order, col_Order));

        row_Order = 2;
        col_Order = 1;
        dataList.add(new ProductQuantityData("Coffee bean", "kg", "2016.02", "Branch 1", 80d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Coffee bean", "kg", "2017.02", "Branch 1", 75d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Coffee bean", "kg", "diff", "Branch 1", -5d, row_Order, col_Order));

        col_Order = 2;
        dataList.add(new ProductQuantityData("Coffee bean", "kg", "2016.02", "Branch 2", 77d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Coffee bean", "kg", "2017.02", "Branch 2", 77d, row_Order, col_Order));
        dataList.add(new ProductQuantityData("Coffee bean", "kg", "diff", "Branch 2", 0d, row_Order, col_Order));

        // sort
        SortBuilder rowSortBuilder = asc(field("rowOrder", Integer.class));
        SortBuilder columnSortBuilder = asc(field("colOrder", Integer.class));

        report
                //                .sortBy(rowSortBuilder, columnSortBuilder)
                //                .sortBy(rowSortBuilder, columnSortBuilder)
                .setPageFormat(PageType.A4, PageOrientation.LANDSCAPE)
                .setTemplate(Templates.reportTemplate)
                .title(Components.text("Product quantity by branch"))
                .summary(crosstab)
                .pageFooter(Components.pageXslashY())
                .setDataSource(new JRBeanCollectionDataSource(dataList));

        return report;
    }

    public static void main(String[] args) {
        CrosstabGroupTest design = new CrosstabGroupTest();
        try {
            JasperReportBuilder report = design.build();
            report.show();
        } catch (DRException e) {
            e.printStackTrace();
        }
    }
    
    public class CTOValueFormatter extends AbstractValueFormatter<String, String>{
        @Override
        public String format(String value, ReportParameters reportParameters) {
           return value.split("-")[1];
        }
    }

    public class CTOrderExpression extends AbstractComplexExpression<String> {

        public CTOrderExpression(String sortField, String showField) {
            addExpression(field(sortField, Integer.class));
            addExpression(field(showField, String.class));
        }

        @Override
        public String evaluate(List<?> list, ReportParameters rp) {
            return list.get(0) + "-" + list.get(1);
        }
    }

}