com.autentia.wuija.reports.JasperReportsHelper.java Source code

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Here is the source code for com.autentia.wuija.reports.JasperReportsHelper.java

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/**
 * 
 * Copyright 2008 Autentia Real Business Solutions S.L. This file is part of Autentia WUIJA. Autentia WUIJA 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, version 3 of the License. Autentia WUIJA 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 Autentia WUIJA. If not, see <http://www.gnu.org/licenses/>.
 */

package com.autentia.wuija.reports;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import net.sf.jasperreports.engine.JRAbstractExporter;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.export.JRCsvExporter;
import net.sf.jasperreports.engine.export.JRCsvExporterParameter;
import net.sf.jasperreports.engine.export.JRHtmlExporter;
import net.sf.jasperreports.engine.export.JRPdfExporter;
import net.sf.jasperreports.engine.export.JRRtfExporter;
import net.sf.jasperreports.engine.export.JRXlsAbstractExporterParameter;
import net.sf.jasperreports.engine.export.JRXlsExporter;
import net.sf.jasperreports.engine.export.oasis.JROdtExporter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.autentia.wuija.reports.JasperReportsService.Format;

public abstract class JasperReportsHelper {

    private static final Log log = LogFactory.getLog(JasperReportsService.class);

    /** configuration parameter: CSV_DELIMITER (default value: ",") */
    public static String CSV_DELIMITER = ";";

    public static File writeExportedReportToFile(String fileName, Format format,
            final ByteArrayOutputStream output) {

        File file;
        FileOutputStream fos = null;
        try {
            file = File.createTempFile(fileName, "." + format.toString().toLowerCase());
            fos = new FileOutputStream(file);
            fos.write(output.toByteArray());
            fos.flush();

        } catch (IOException e) {
            final String msg = "Exception writing the report generated.";
            log.error(msg, e);
            throw new JRRuntimeException(msg, e);

        } finally {
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    log.warn("Cannot close file of generated report", e);
                }
            }
        }
        return file;
    }

    public static ByteArrayOutputStream exportReportToOutputStream(JasperPrint print, Format format) {

        final ByteArrayOutputStream output = new ByteArrayOutputStream();

        try {

            JRAbstractExporter exporter = null;

            switch (format) {
            case CSV:
                exporter = new JRCsvExporter();
                exporter.setParameter(JRCsvExporterParameter.FIELD_DELIMITER, CSV_DELIMITER);
                break;

            case HTML:
                exporter = new JRHtmlExporter();
                break;

            case RTF:
                exporter = new JRRtfExporter();
                break;

            case XLS:
                exporter = new JRXlsExporter();
                exporter.setParameter(JRXlsAbstractExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.TRUE);
                exporter.setParameter(JRXlsAbstractExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,
                        Boolean.TRUE);
                break;

            case ODT:
                exporter = new JROdtExporter();
                break;

            case PDF:
            default:

                exporter = new JRPdfExporter();
                exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING, "UTF-8");

                break;
            }
            exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);
            exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, output);
            exporter.exportReport();

        } catch (JRException e) {
            throw new JRRuntimeException(e);
        }

        return output;
    }

}