ExpressionColumnReport

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ExpressionColumnReport

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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.column;

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

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

import net.sf.dynamicreports.examples.Templates;
import net.sf.dynamicreports.report.base.expression.AbstractSimpleExpression;
import net.sf.dynamicreports.report.builder.FieldBuilder;
import net.sf.dynamicreports.report.datasource.DRDataSource;
import net.sf.dynamicreports.report.definition.ReportParameters;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.JRDataSource;

/**
 * @author Ricardo Mariaca (r.mariaca@dynamicreports.org)
 */
public class ExpressionColumnReport {
	private FieldBuilder<Integer> quantityField;

	public ExpressionColumnReport() {
		build();
	}

	private void build() {
		try {
			report()
			  .setTemplate(Templates.reportTemplate)
			  .fields(
			  	field("orderdate", Date.class),
			  	quantityField = field("quantity", Integer.class),
			  	field("unitprice", BigDecimal.class))
			  .columns(
			  	col.column("Item", "item", type.stringType()),
			  	col.column("Expression column", new ExpressionColumn()))
			  .title(Templates.createTitleComponent("ExpressionColumn"))
			  .pageFooter(Templates.footerComponent)
			  .setDataSource(createDataSource())
			  .show();
		} catch (DRException e) {
			e.printStackTrace();
		}
	}

	private JRDataSource createDataSource() {
		DRDataSource dataSource = new DRDataSource("item", "orderdate", "quantity", "unitprice");
		dataSource.add("Notebook", new Date(), 1, new BigDecimal(500));
		return dataSource;
	}

	public static void main(String[] args) {
		new ExpressionColumnReport();
	}

	private class ExpressionColumn extends AbstractSimpleExpression<String> {
		private static final long serialVersionUID = 1L;

		@Override
		public String evaluate(ReportParameters reportParameters) {
			return
				"Item = " + reportParameters.getValue("item") + ", " +
				"Order date = " + type.dateType().valueToString("orderdate", reportParameters) + ", " +
				"Quantity = " + type.integerType().valueToString(quantityField, reportParameters) + ", " +
				"Unit price = " + type.bigDecimalType().valueToString("unitprice", reportParameters);
		}
	}
}
 
Tags: column, expression

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