GroupSubtotalsReport

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GroupSubtotalsReport

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/**
 * DynamicReports - Free Java reporting library for creating reports dynamically
 *
 * Copyright (C) 2010 - 2015 Ricardo Mariaca
 * http://www.dynamicreports.org
 *
 * This file is part of DynamicReports.
 *
 * DynamicReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * DynamicReports 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with DynamicReports. If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.dynamicreports.examples.group;

import static net.sf.dynamicreports.report.builder.DynamicReports.*;

import java.math.BigDecimal;
import java.util.Calendar;
import java.util.Date;

import net.sf.dynamicreports.examples.Templates;
import net.sf.dynamicreports.report.builder.column.TextColumnBuilder;
import net.sf.dynamicreports.report.builder.group.ColumnGroupBuilder;
import net.sf.dynamicreports.report.constant.GroupHeaderLayout;
import net.sf.dynamicreports.report.datasource.DRDataSource;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.JRDataSource;

/**
 * @author Ricardo Mariaca (r.mariaca@dynamicreports.org)
 */
public class GroupSubtotalsReport {

	public GroupSubtotalsReport() {
		build();
	}

	private void build() {
		TextColumnBuilder<Date> yearColumn = col.column("Order year", "orderdate", type.dateYearType());
		TextColumnBuilder<Date> monthColumn = col.column("Order month", "orderdate", type.dateMonthType());
		TextColumnBuilder<Integer> quantityColumn = col.column("Quantity", "quantity",  type.integerType());
		TextColumnBuilder<BigDecimal> unitPriceColumn = col.column("Unit price", "unitprice", type.bigDecimalType());

		ColumnGroupBuilder yearGroup  = grp.group(yearColumn)
			.groupByDataType();
		ColumnGroupBuilder monthGroup = grp.group(monthColumn)
			.groupByDataType()
			.setHeaderLayout(GroupHeaderLayout.EMPTY)
			.setHideColumn(false);

		try {
			report()
				.setTemplate(Templates.reportTemplate)
				.setSubtotalStyle(Templates.columnStyle)
				.setShowColumnValues(false)
				.columns(yearColumn, monthColumn, quantityColumn, unitPriceColumn)
				.groupBy(yearGroup, monthGroup)
				.subtotalsAtGroupFooter(monthGroup, sbt.first(monthColumn), sbt.sum(quantityColumn), sbt.sum(unitPriceColumn))
				.title(Templates.createTitleComponent("GroupSubtotals"))
				.pageFooter(Templates.footerComponent)
				.setDataSource(createDataSource())
				.show();
		} catch (DRException e) {
			e.printStackTrace();
		}
	}

	private JRDataSource createDataSource() {
		DRDataSource dataSource = new DRDataSource("orderdate", "quantity", "unitprice");
		Calendar c = Calendar.getInstance();
		c.add(Calendar.YEAR, -1);
		for (int i = 0; i < 200; i++) {
			Date date = c.getTime();
			dataSource.add(date, (int) (Math.random() * 10) + 1, new BigDecimal(Math.random() * 100 + 1));
			c.add(Calendar.DAY_OF_MONTH, 1);
		}
		return dataSource;
	}

	public static void main(String[] args) {
		new GroupSubtotalsReport();
	}
}
 
Tags: group, subtotal

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