org.mycore.common.MCRExceptionCauseFinder Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.common;
import javax.xml.transform.TransformerException;
import org.apache.xml.utils.WrappedRuntimeException;
/**
* Tries to find the cause of an exception by diving down
* those exceptions that wrap other exceptions, recursively.
* The exception at the bottom of the stack is returned.
*
* @author Frank L\u00FCtzenkirchen
*/
public class MCRExceptionCauseFinder {
public static Exception getCause(TransformerException ex) {
Throwable cause = ex.getException();
return (cause == null ? ex : getCause(cause));
}
public static Exception getCause(Throwable ex) {
Throwable cause = ex.getCause();
return (cause == null ? (Exception) ex : getCause(cause));
}
public static Exception getCause(WrappedRuntimeException ex) {
return getCause(ex.getException());
}
}