/*
* 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 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.misc.beanshell;
import org.pentaho.reporting.engine.classic.core.metadata.ElementMetaDataParser;
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 java.io.InputStream;
/**
* The module definition for the beanshell expression support module.
*
* @author Thomas Morgner
*/
public class BeanShellModule extends AbstractModule {
/**
* DefaultConstructor. Loads the module specification.
*
* @throws ModuleInitializeException
* if an error occured.
*/
public BeanShellModule() 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 {
final ClassLoader classLoader = ObjectUtilities.getClassLoader( getClass() );
final InputStream in = classLoader.getResourceAsStream( BSHExpression.BSHHEADERFILE );
if ( in == null ) {
throw new ModuleInitializeException( "Unable to locate BSHHeaderFile. " + //$NON-NLS-1$
"This file is required to execute the BeanShellExpressions." ); //$NON-NLS-1$
}
try {
Class.forName( "bsh.Interpreter", false, classLoader ); //$NON-NLS-1$
} catch ( Exception e ) {
throw new ModuleInitializeException( "Unable to load the bean shell interpreter class. " + //$NON-NLS-1$
"This class is required to execute the BeanShellExpressions." ); //$NON-NLS-1$
}
ElementMetaDataParser
.initializeOptionalExpressionsMetaData( "org/pentaho/reporting/engine/classic/core/modules/misc/beanshell/meta-expressions.xml" );
}
}