/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008 jOpenDocument, by ILM Informatique. All rights reserved.
*
* The contents of this file are subject to the terms of the GNU
* General Public License Version 3 only ("GPL").
* You may not use this file except in compliance with the License.
* You can obtain a copy of the License at http://www.gnu.org/licenses/gpl-3.0.html
* See the License for the specific language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each file.
*
*/
package org.jopendocument.util;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.reflect.Constructor;
/**
* Utilitaires pour les exceptions.
*
* @author Sylvain CUAZ 25 nov. 2004
*/
public class ExceptionUtils {
/** Static only. */
private ExceptionUtils() {
super();
}
/**
* Crée une exception avec message et cause.
*
* @param <T> le type d'exception à créer.
* @param exnClass la classe de l'exception à créer, eg IOException.class.
* @param msg le message.
* @param cause la cause.
* @return une exception initialisée.
*/
static public <T extends Exception> T createExn(Class<T> exnClass, String msg, Throwable cause) {
T instance = null;
try {
Constructor<T> ctor = exnClass.getConstructor(new Class[] { String.class });
instance = ctor.newInstance(new Object[] { msg });
} catch (Exception exn) {
throw new IllegalArgumentException(exnClass + " has no working String constructor");
}
instance.initCause(cause);
return instance;
}
/**
* Crée une RuntimeException.
*
* @param <T> le type d'exception à créer.
* @param exnClass la classe de l'exception à créer, eg IllegalArgumentException.class.
* @param msg le message.
* @param cause la cause.
* @return une RuntimeException initialisée.
* @throws IllegalArgumentException if exnClass is not Runtime.
* @see #createExn(Class, String, Throwable)
* @deprecated use {@link #createExn(Class, String, Throwable)}
*/
static public <T extends RuntimeException> T createRTExn(Class<T> exnClass, String msg, Throwable cause) {
if (!RuntimeException.class.isAssignableFrom(exnClass))
throw new IllegalArgumentException(exnClass + " is not a Runtime exception");
return createExn(exnClass, msg, cause);
}
static public String getStackTrace(Throwable cause) {
final StringWriter res = new StringWriter();
cause.printStackTrace(new PrintWriter(res));
return res.toString();
}
}