PDFJasperReportsWrapper.java

/**
 * Copyright (C) 2008-2010, Squale Project - http://www.squale.org
 *
 * This file is part of Squale.
 *
 * Squale 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 any later version.
 *
 * Squale 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 General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Squale.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.squale.welcom.outils.pdf.jasperreports;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import org.squale.welcom.outils.pdf.PDFData;
import org.squale.welcom.outils.pdf.PDFDataJasperReports;
import org.squale.welcom.outils.pdf.PDFGenerateur;
import org.squale.welcom.outils.pdf.PDFGenerateurException;
import org.squale.welcom.outils.pdf.advanced.WPdfDecoration;
import org.squale.welcom.struts.message.WResourceBundle;

import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRParameter;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.fill.JRFileVirtualizer;


/**
 * @author user To change this generated comment edit the template variable "typecomment":
 *         Window>Preferences>Java>Templates. To enable and disable the creation of type comments go to
 *         Window>Preferences>Java>Code Generation.
 */
public class PDFJasperReportsWrapper
    implements PDFGenerateur
{

    /** Le pdfdata */
    private PDFData pdfData;

    /** Stream de sortie pour la generation */
    private OutputStream os = null;

    /** Taille de la stream */
    protected int outputSize = 0;

    /** Le template */
    private InputStream template = null;

    /** La data source de Jasper */
    private JRDataSource dataSource = null;

    /** nb de page pour le virtualiser */
    private final static int NB_PAGE = 10;

    /**
     * @see org.squale.welcom.outils.pdf.PDFGenerateur#open(java.io.OutputStream)
     */
    public void open( final OutputStream pOs )
        throws PDFGenerateurException
    {
        setOutputStream( pOs );
    }

    /**
     * Chargement du template
     * 
     * @param is : Liste des InputStream
     * @throws PDFGenerateurException : Leve l'exception si le fichier est null
     */
    public void loadTemplate( final InputStream is )
        throws PDFGenerateurException
    {
        template = is;
    }

    /**
     * @see org.squale.welcom.outils.pdf.PDFGenerateur#close()
     */
    public void close()
        throws PDFGenerateurException
    {
        printPDF();
    }

    /**
     * Sp�cifie le flux de sortie
     * 
     * @param pOs : Flux
     */
    public void setOutputStream( final OutputStream pOs )
    {
        this.os = pOs;
    }

    /**
     * fabrication du rapport et envoi du rapport dans le outputStream
     * 
     * @throws PDFGenerateurException : Verifie si le template a charger ou stream nulle
     */
    public void printPDF()
        throws PDFGenerateurException
    {
        if ( template == null )
        {
            throw new PDFGenerateurException( "Aucun template de charg�, effectuer un loadTemplate avant" );
        }
        if ( os == null )
        {
            throw new PDFGenerateurException( "Le stream de sortie est null sur le print PDF" );
        }
        if ( dataSource == null )
        {
            throw new PDFGenerateurException( "Aucune data source n'a �t� sp�cifi�e" );
        }
        JRFileVirtualizer virtualizer = null;
        try
        {
            Map parameters = null;
            if ( pdfData != null )
            {
                final WResourceBundle bundle = new WResourceBundle( pdfData.getMessageResources(), pdfData.getLocale() );
                parameters = new HashMap();
                if ( pdfData instanceof PDFDataJasperReports )
                {
                    final PDFDataJasperReports myPdfData = (PDFDataJasperReports) pdfData;
                    if ( myPdfData.getParameters() != null )
                    {
                        parameters = myPdfData.getParameters();
                    }
                    if ( myPdfData.isVirtualize() )
                    {
                        virtualizer = new JRFileVirtualizer( NB_PAGE );
                        parameters.put( JRParameter.REPORT_VIRTUALIZER, virtualizer );
                    }
                }
                if ( !parameters.containsKey( "REPORT_RESOURCE_BUNDLE" ) )
                {
                    parameters.put( "REPORT_RESOURCE_BUNDLE", bundle );
                }

            }
            final JasperPrint jasperPrint = JasperFillManager.fillReport( template, parameters, dataSource );
            final byte[] output = JasperExportManager.exportReportToPdf( jasperPrint );
            os.write( output );
        }
        catch ( final JRException jre )
        {
            jre.printStackTrace();
        }
        catch ( final IOException ioe )
        {
            ioe.printStackTrace();
        }
        finally
        {
            if ( virtualizer != null )
            {
                virtualizer.cleanup();
            }
        }
    }

    /**
     * @return Report ...
     */
    public Object getReport()
    {
        return null;
    }

    /**
     * @see org.squale.welcom.outils.pdf.PDFGenerateur#getPDFWriter()
     */
    public Object getPDFWriter()
    {
        return null;
    }

    /**
     * @see org.squale.welcom.outils.pdf.PDFGenerateur#setDecoration(org.squale.welcom.outils.pdf.advanced.WPdfDecoration)
     */
    public void setDecoration( final WPdfDecoration pdecoration )
        throws PDFGenerateurException
    {
        throw new PDFGenerateurException(
                                          "Attention, la m�thode setDecoration() n'est utilisable qu'avec un moteur de type Itext" );
    }

    /**
     * Sp�cifie la data source pour les rapports g�n�r�s avec JasperReports (exclusivement)
     * 
     * @param pDataSource : la data source
     */
    public void setDataSource( final JRDataSource pDataSource )
    {
        dataSource = pDataSource;
    }

    /**
     * @param data le PDFdata
     */
    public void setPdfData( final PDFData data )
    {
        pdfData = data;
    }

}