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A Java full-stack web framework with programmatic configuration instead of XML and Annotations.
/* Mentawai Web Framework http://mentawai.lohis.com.br/
* Copyright (C) 2005 Sergio Oliveira Jr. ([email protected])
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.mentawai.util;
public class Exception extends java.lang.Exception {
protected final Throwable rootCause;
public Exception() {
super();
this.rootCause = null;
}
public Exception(String msg) {
super(msg);
this.rootCause = null;
}
public Exception(Throwable t) {
super(getMsg(t), t);
Throwable root = getRootCause(t);
setStackTrace(root.getStackTrace());
this.rootCause = root == this ? null : root;
}
private static String getMsg(Throwable t) {
Throwable root = getRootCause(t);
String msg = root.getMessage();
if (msg == null || msg.length() == 0) {
msg = t.getMessage();
if (msg == null || msg.length() == 0) return root.getClass().getName();
}
return msg;
}
public Exception(String msg, Throwable t) {
this(msg, t, false);
}
public Exception(String msg, Throwable t, boolean appendRootMsg) {
super(getMsg(msg, t, appendRootMsg), t);
Throwable root = getRootCause(t);
setStackTrace(root.getStackTrace());
this.rootCause = root == this ? null : root;
}
private static String getMsg(String msg, Throwable t, boolean append) {
if (!append) return msg;
StringBuilder sb = new StringBuilder(64);
sb.append(msg);
Throwable root = getRootCause(t);
String classname = root.getClass().getSimpleName();
sb.append(" (").append(classname);
String rootMsg = root.getMessage();
if (rootMsg == null || rootMsg.length() == 0) {
sb.append(")");
} else {
sb.append(": ").append(rootMsg).append(")");
}
return sb.toString();
}
private static Throwable getRootCause(Throwable t) {
Throwable root = t.getCause();
if (root == null) return t;
while(root.getCause() != null) {
root = root.getCause();
}
return root;
}
@Override
public Throwable getCause() {
return rootCause;
}
}