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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.infra.constraints.util;
import org.eclipse.papyrus.infra.constraints.Activator;
/**
* A Helper class for Class Loading.
*
* @author Camille Letavernier
*/
public class ClassLoader {
/**
* Loads the class matching the given className. Exceptions are caught and sent
* to the Logger.
*
* @param className
* The qualified name of the Class to load.
* @return
* The loaded Class, or null if an error occured
*/
public Class<?> loadClass(String className) {
try {
Class<?> clazz = Activator.getDefault().getBundle().loadClass(className);
return clazz;
} catch (ClassNotFoundException ex) {
Activator.log.error("Cannot load class " + className, ex); //$NON-NLS-1$
} catch (ClassCastException ex) {
Activator.log.error("Cannot load class " + className, ex); //$NON-NLS-1$
} catch (NullPointerException ex) {
Activator.log.error("Cannot load class " + className, ex); //$NON-NLS-1$
}
return null;
}
/**
* Returns a new Instance of the given class
*
* @param className
* The qualified name of the Class to instantiate
* @return
* A new instance of the given class, or null if the class couldn't be
* instantiated
*/
public Object newInstance(String className) {
return newInstance(loadClass(className));
}
/**
* Returns a new Instance of the given class
*
* @param theClass
* The Class to instantiate
* @return
* A new instance of the given class, or null if the class couldn't be
* instantiated
*/
public <T extends Object> T newInstance(Class<T> theClass) {
if (theClass == null) {
return null;
}
try {
return theClass.newInstance();
} catch (IllegalAccessException ex) {
Activator.log.error(ex);
} catch (InstantiationException ex) {
Activator.log.error(ex);
}
return null;
}
}
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