/*
* 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) 2009 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.metadata;
import java.util.HashMap;
import org.pentaho.reporting.engine.classic.core.ReportProcessTask;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class ReportProcessTaskRegistry
{
private HashMap exportTypes;
private static ReportProcessTaskRegistry processTaskRegistry;
public static synchronized ReportProcessTaskRegistry getInstance()
{
if (processTaskRegistry == null)
{
processTaskRegistry = new ReportProcessTaskRegistry();
}
return processTaskRegistry;
}
private ReportProcessTaskRegistry()
{
this.exportTypes = new HashMap();
}
public void registerExportType(final String exportType, final Class exportTask)
{
if (exportType == null)
{
throw new NullPointerException();
}
if (exportTask == null)
{
throw new NullPointerException();
}
if (ReportProcessTask.class.isAssignableFrom(exportTask) == false)
{
throw new IllegalArgumentException("Invalid Implementation: " + exportTask);
}
this.exportTypes.put(exportType, exportTask.getName());
}
public String[] getExportTypes()
{
return (String[]) exportTypes.keySet().toArray(new String[exportTypes.size()]);
}
public boolean isExportTypeRegistered(final String exportType)
{
return exportTypes.containsKey(exportType);
}
public ReportProcessTask createProcessTask(final String exportType)
{
final String c = (String) exportTypes.get(exportType);
final ReportProcessTask o = (ReportProcessTask) ObjectUtilities.loadAndInstantiate(c,
ReportProcessTaskRegistry.class, ReportProcessTask.class);
if (o == null)
{
throw new IllegalArgumentException();
}
return o;
}
}