/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.gui.csv;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.ReportInterruptedException;
import org.pentaho.reporting.engine.classic.core.ReportProcessingException;
import org.pentaho.reporting.engine.classic.core.modules.gui.common.StatusListener;
import org.pentaho.reporting.engine.classic.core.modules.gui.commonswing.ReportProgressDialog;
import org.pentaho.reporting.engine.classic.core.modules.gui.commonswing.StatusType;
import org.pentaho.reporting.engine.classic.core.modules.gui.commonswing.SwingCommonModule;
import org.pentaho.reporting.engine.classic.core.modules.gui.commonswing.SwingGuiContext;
import org.pentaho.reporting.engine.classic.core.modules.output.table.base.StreamReportProcessor;
import org.pentaho.reporting.engine.classic.core.modules.output.table.csv.StreamCSVOutputProcessor;
import org.pentaho.reporting.libraries.base.util.Messages;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* An export task implementation that writes an report into a CSV file, and uses the table target to create layouted
* content.
*
* @author Thomas Morgner
*/
public class CSVTableExportTask implements Runnable
{
private static final Log logger = LogFactory.getLog(CSVTableExportTask.class);
/**
* Provides access to externalized strings
*/
private Messages messages;
/**
* The progress dialog that monitors the export process.
*/
private final ReportProgressDialog progressDialog;
/**
* The name of the output file.
*/
private final String fileName;
/**
* The report that should be exported.
*/
private final MasterReport report;
private StatusListener statusListener;
/**
* Creates a new CSV export task.
*
* @param swingGuiContext the GUI Context
* @param dialog the progress monitor
* @param report the report that should be exported.
* @throws ReportProcessingException if the report did not define a valid filename.
*/
public CSVTableExportTask
(final MasterReport report,
final ReportProgressDialog dialog,
final SwingGuiContext swingGuiContext) throws ReportProcessingException
{
if (report == null)
{
throw new NullPointerException
("CSVTableExportTask(..): Report parameter cannot be null"); //$NON-NLS-1$
}
final String filename = report.getConfiguration().getConfigProperty
("org.pentaho.reporting.engine.classic.core.modules.gui.csv.FileName"); //$NON-NLS-1$
if (filename == null)
{
throw new ReportProcessingException
("CSVTableExportTask(..): Configuration does not contain a valid filename"); //$NON-NLS-1$
}
this.progressDialog = dialog;
this.report = report;
this.fileName = filename;
if (swingGuiContext != null)
{
this.statusListener = swingGuiContext.getStatusListener();
this.messages = new Messages(swingGuiContext.getLocale(), CSVTableExportPlugin.BASE_RESOURCE_CLASS,
ObjectUtilities.getClassLoader(CSVTableExportPlugin.class));
}
}
/**
* Exports the report into a CSV file.
*/
public void run()
{
OutputStream out = null;
final File file = new File(fileName);
try
{
final File directory = file.getAbsoluteFile().getParentFile();
if (directory != null)
{
if (directory.exists() == false)
{
if (directory.mkdirs() == false)
{
CSVTableExportTask.logger.warn("Can't create directories. Hoping and praying now.."); //$NON-NLS-1$
}
}
}
out = new BufferedOutputStream(new FileOutputStream(file));
final StreamCSVOutputProcessor target = new StreamCSVOutputProcessor(report.getConfiguration(), out);
final StreamReportProcessor reportProcessor = new StreamReportProcessor(report, target);
if (progressDialog != null)
{
progressDialog.setModal(false);
progressDialog.setVisible(true);
reportProcessor.addReportProgressListener(progressDialog);
}
reportProcessor.processReport();
out.close();
out = null;
if (progressDialog != null)
{
reportProcessor.removeReportProgressListener(progressDialog);
}
if (statusListener != null)
{
statusListener.setStatus
(StatusType.INFORMATION, messages.getString("CSVTableExportTask.USER_TASK_COMPLETE"), null); //$NON-NLS-1$
}
}
catch (ReportInterruptedException re)
{
if (statusListener != null)
{
statusListener.setStatus
(StatusType.INFORMATION, messages.getString("CSVTableExportTask.USER_TASK_ABORTED"), null); //$NON-NLS-1$
}
try
{
out.close();
out = null;
if (file.delete() == false)
{
CSVTableExportTask.logger.warn("Unable to delete incomplete export:" + file); //$NON-NLS-1$
}
}
catch (SecurityException se)
{
// ignore me
}
catch (IOException ioe)
{
// ignore me...
}
}
catch (Exception re)
{
CSVTableExportTask.logger.error("Exporting failed .", re); //$NON-NLS-1$
if (statusListener != null)
{
statusListener.setStatus
(StatusType.ERROR, messages.getString("CSVTableExportTask.USER_TASK_FAILED"), re); //$NON-NLS-1$
}
}
finally
{
try
{
if (out != null)
{
out.close();
}
}
catch (Exception e)
{
CSVTableExportTask.logger.error("Unable to close the output stream.", e); //$NON-NLS-1$
// if there is already another error, this exception is
// just a minor obstactle. Something big crashed before ...
}
if (progressDialog != null)
{
progressDialog.setVisible(false);
}
}
}
}