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DynamicReports is an open source Java reporting library based on JasperReports. It allows to create dynamic report designs and it doesn't need a visual report designer. You can very quickly create reports and produce documents that can be displayed, printed or exported into many popular formats such as PDF, Excel, Word and others.

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/**
 * DynamicReports - Free Java reporting library for creating reports dynamically
 *
 * Copyright (C) 2010 - 2016 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 .
 */

package net.sf.dynamicreports.jasper.transformation;

import java.util.Map;

import net.sf.dynamicreports.design.definition.DRIDesignDataset;
import net.sf.dynamicreports.design.definition.DRIDesignReport;
import net.sf.dynamicreports.jasper.base.JasperCustomValues;
import net.sf.dynamicreports.jasper.base.JasperReportDesign;
import net.sf.dynamicreports.report.definition.ReportParameters;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.design.JasperDesign;

/**
 * @author Ricardo Mariaca ([email protected])
 */
public class JasperTransform implements JasperTransformAccessor {
	private DRIDesignReport report;
	private JasperReportDesign jasperReportDesign;
	private ReportTransform reportTransform;
	private MainDatasetExpressionTransform mainDatasetExpressionTransform;
	private BandTransform bandTransform;
	private ComponentTransform componentTransform;
	private GroupTransform groupTransform;
	private StyleTransform styleTransform;
	private ChartTransform chartTransform;
	private BarcodeTransform barcodeTransform;
	private CrosstabTransform crosstabTransform;
	private DatasetTransform datasetTransform;
	private AbstractExpressionTransform expressionTransform;

	public JasperTransform(DRIDesignReport report, JasperReportDesign jasperReportDesign) throws DRException {
		this.report = report;
		this.jasperReportDesign = jasperReportDesign;
		init();
	}

	private void init() throws DRException {
		reportTransform = new ReportTransform(this);
		mainDatasetExpressionTransform = new MainDatasetExpressionTransform(this);
		groupTransform = new GroupTransform(this);
		bandTransform = new BandTransform(this);
		componentTransform = new ComponentTransform(this);
		styleTransform = new StyleTransform(this);
		chartTransform = new ChartTransform(this);
		barcodeTransform = new BarcodeTransform(this);
		crosstabTransform = new CrosstabTransform(this);
		datasetTransform = new DatasetTransform(this);
		transformToMainDataset();
	}

	public void transform() {
		reportTransform.transform();
		datasetTransform.transform();
		groupTransform.transform();
		mainDatasetExpressionTransform.transform();
		reportTransform.transformExpressions();
		groupTransform.transformExpressions();
		styleTransform.transform();
		bandTransform.transform();
		reportTransform.addDependencies();
	}

	@Override
	public ReportTransform getReportTransform() {
		return reportTransform;
	}

	@Override
	public ChartTransform getChartTransform() {
		return chartTransform;
	}

	@Override
	public BarcodeTransform getBarcodeTransform() {
		return barcodeTransform;
	}

	@Override
	public CrosstabTransform getCrosstabTransform() {
		return crosstabTransform;
	}

	@Override
	public ComponentTransform getComponentTransform() {
		return componentTransform;
	}

	@Override
	public void transformToMainDataset() {
		transformToDataset(null);
	}

	@Override
	public void transformToDataset(DRIDesignDataset dataset) {
		if (dataset != null) {
			expressionTransform = datasetTransform.getDatasetExpressionTransform(dataset);
		}
		else {
			expressionTransform = mainDatasetExpressionTransform;
		}
	}

	@Override
	public AbstractExpressionTransform getExpressionTransform() {
		return expressionTransform;
	}

	@Override
	public AbstractExpressionTransform getExpressionTransform(DRIDesignDataset dataset) {
		if (dataset == null) {
			return mainDatasetExpressionTransform;
		}
		else {
			return getDatasetTransform().getDatasetExpressionTransform(dataset);
		}
	}

	@Override
	public GroupTransform getGroupTransform() {
		return groupTransform;
	}

	@Override
	public StyleTransform getStyleTransform() {
		return styleTransform;
	}

	@Override
	public DatasetTransform getDatasetTransform() {
		return datasetTransform;
	}

	@Override
	public DRIDesignReport getReport() {
		return report;
	}

	@Override
	public JasperCustomValues getCustomValues() {
		return jasperReportDesign.getCustomValues();
	}

	@Override
	public JasperDesign getDesign() {
		return jasperReportDesign.getDesign();
	}

	@Override
	public Map getParameters() {
		return jasperReportDesign.getParameters();
	}

	@Override
	public Map getParameterValues() {
		return report.getParameterValues();
	}

	@Override
	public Integer getStartPageNumber() {
		return jasperReportDesign.getStartPageNumber();
	}

	@Override
	public ReportParameters getMasterReportParameters() {
		return jasperReportDesign.getMasterReportParameters();
	}
}