/*
* 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) 2005 - 2009 Pentaho Corporation, Object Refinery Limited and Contributors. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.modules.rhino;
import java.net.URL;
import org.pentaho.reporting.libraries.base.boot.AbstractModule;
import org.pentaho.reporting.libraries.base.boot.ModuleInitializeException;
import org.pentaho.reporting.libraries.base.boot.SubSystem;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.engine.classic.core.metadata.ExpressionRegistry;
/**
* The module definition for the bean scripting framework support module.
*
* @author Thomas Morgner
*/
public class RhinoModule extends AbstractModule
{
/**
* DefaultConstructor. Loads the module specification.
*
* @throws ModuleInitializeException if an error occured.
*/
public RhinoModule()
throws ModuleInitializeException
{
loadModuleInfo();
}
/**
* Initializes the module. Use this method to perform all initial setup operations. This
* method is called only once in a modules lifetime. If the initializing cannot be
* completed, throw a ModuleInitializeException to indicate the error,. The module will
* not be available to the system.
*
* @param subSystem the subSystem.
* @throws ModuleInitializeException
* if an error ocurred while initializing the module.
*/
public void initialize (final SubSystem subSystem)
throws ModuleInitializeException
{
try
{
final ClassLoader loader = ObjectUtilities.getClassLoader(getClass());
Class.forName("org.mozilla.javascript.Context", false, loader);
}
catch (Exception e)
{
throw new ModuleInitializeException("Unable to load the Rhino scripting framework class. " +
"This class is required to execute the RhinoExpressions.");
}
final URL expressionMetaSource = ObjectUtilities.getResource
("org/pentaho/reporting/engine/classic/extensions/modules/rhino/meta-expressions.xml", RhinoModule.class);
if (expressionMetaSource == null)
{
throw new ModuleInitializeException("Error: Could not find the expression meta-data description file");
}
try
{
ExpressionRegistry.getInstance().registerFromXml(expressionMetaSource);
}
catch (Exception e)
{
throw new ModuleInitializeException("Error: Could not parse the element meta-data description file", e);
}
}
}