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DynamicJasper (DJ) is an API that hides the complexity of Jasper Reports, it helps developers to save time when designing simple/medium complexity reports generating the layout of the report elements automatically. It creates reports dynamically, defining at runtime the columns, column width (auto width), groups, variables, fonts, charts, crosstabs, sub reports (that can also be dynamic), page size and everything else that you can define at design time. DJ keeps full compatibility with Jasper Reports since it's a tool that helps create reports programmatically in a easy way (it only interferes with the creation of the report design doing the layout of the elements). You can use the classic .jrxml files as templates while the content and layout of the report elements are handled by the DJ API. http://dynamicjasper.com

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/*
 * DynamicJasper: A library for creating reports dynamically by specifying
 * columns, groups, styles, etc. at runtime. It also saves a lot of development
 * time in many cases! (http://sourceforge.net/projects/dynamicjasper)
 *
 * Copyright (C) 2008  FDV Solutions (http://www.fdvsolutions.com)
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 *
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *
 */

package ar.com.fdvs.dj.output;

import ar.com.fdvs.dj.core.DJConstants;
import ar.com.fdvs.dj.core.layout.ClassicLayoutManager;
import ar.com.fdvs.dj.core.layout.LayoutManager;
import ar.com.fdvs.dj.core.layout.ListLayoutManager;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.export.JRXlsExporterParameter;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Alejandro Gomez
 *         Date: Feb 22, 2007
 *         Time: 4:44:50 PM
 */
public class FormatInfoRegistry {

	public static final String EXPORTER_CLASS_XLS = "net.sf.jasperreports.engine.export.JRXlsExporter";
	public static final String EXPORTER_CLASS_CSV = "net.sf.jasperreports.engine.export.JRCsvExporter";
	public static final String EXPORTER_CLASS_HTML ="net.sf.jasperreports.engine.export.HtmlExporter";
	public static final String EXPORTER_CLASS_PDF = "net.sf.jasperreports.engine.export.JRPdfExporter";
	public static final String EXPORTER_CLASS_XML = "net.sf.jasperreports.engine.export.JRXmlExporter";
	public static final String EXPORTER_CLASS_RTF = "net.sf.jasperreports.engine.export.JRRtfExporter";

	
    private static final Map FORMAT_INFO = new HashMap();
    static {
        FORMAT_INFO.put(DJConstants.FORMAT_CSV, new FormatInfo("text/plain", EXPORTER_CLASS_CSV, ClassicLayoutManager.class.getName()));
        FORMAT_INFO.put(DJConstants.FORMAT_HTML, new FormatInfo("text/html", EXPORTER_CLASS_HTML, ClassicLayoutManager.class.getName()));
        FORMAT_INFO.put(DJConstants.FORMAT_PDF, new FormatInfo("application/pdf", EXPORTER_CLASS_PDF, ClassicLayoutManager.class.getName()));
        FORMAT_INFO.put(DJConstants.FORMAT_XLS, new FormatInfo("application/vnd.ms-excel", EXPORTER_CLASS_XLS, ListLayoutManager.class.getName()));
        FORMAT_INFO.put(DJConstants.FORMAT_XML, new FormatInfo("text/xml", EXPORTER_CLASS_XML, ClassicLayoutManager.class.getName()));
        FORMAT_INFO.put(DJConstants.FORMAT_RTF, new FormatInfo("application/rtf", EXPORTER_CLASS_RTF, ClassicLayoutManager.class.getName()));
    }

    private static final FormatInfoRegistry INSTANCE = new FormatInfoRegistry();

    public String getContentType(final String _format) {
        checkFormat(_format);
        return FORMAT_INFO.get(_format).getContentType();
    }

    public JRExporter getExporter(final String _format) {
        checkFormat(_format);
        final JRExporter exporter = FORMAT_INFO.get(_format).getExporterInstance();
        //FIXME migrate to Exporter
//        exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);

        exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);
        exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);
        exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);
        exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);
       
        return exporter;
    }

    public LayoutManager getLayoutManager(final String _format) {
        checkFormat(_format);
        return FORMAT_INFO.get(_format).getLayoutManagerInstance();
    }

    private static void checkFormat(final String _format) {
        if (!FORMAT_INFO.containsKey(_format)) {
            throw new IllegalArgumentException("Unsupported format: " + _format);
        }
    }

    public static FormatInfoRegistry getInstance() {
        return INSTANCE;
    }

    private static class FormatInfo {

        private String contentType;
        private String exporterClass;
        private String layoutManagerClass;

        private FormatInfo(final String _contentType, final String _exporterClass, final String _layoutManagerClass) {
            contentType = _contentType;
            exporterClass = _exporterClass;
            layoutManagerClass = _layoutManagerClass;
        }

        public String getContentType() {
            return contentType;
        }

        public JRExporter getExporterInstance() {
            try {
                return (JRExporter)Class.forName(exporterClass).newInstance();
            } catch (Exception ex) {
                return null;
            }
        }

        public LayoutManager getLayoutManagerInstance() {
            try {
                return (LayoutManager)Class.forName(layoutManagerClass).newInstance();
            } catch (Exception ex) {
                return null;
            }
        }
    }
}