//--------------------------------------------------------------------------
// Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// Neither the name of the Drew Davidson nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
//--------------------------------------------------------------------------
package org.apache.ibatis.ognl;
/**
* Superclass for OGNL exceptions, incorporating an optional encapsulated exception.
*
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
public class OgnlException extends Exception {
/**
* The root evaluation of the expression when the exception was thrown
*/
private Evaluation evaluation;
/**
* Why this exception was thrown.
*
* @serial
*/
private Throwable reason;
/**
* Constructs an OgnlException with no message or encapsulated exception.
*/
public OgnlException() {
this(null, null);
}
/**
* Constructs an OgnlException with the given message but no encapsulated exception.
*
* @param msg the exception's detail message
*/
public OgnlException(String msg) {
this(msg, null);
}
/**
* Constructs an OgnlException with the given message and encapsulated exception.
*
* @param msg the exception's detail message
* @param reason the encapsulated exception
*/
public OgnlException(String msg, Throwable reason) {
super(msg);
this.reason = reason;
}
/**
* Returns the encapsulated exception, or null if there is none.
*
* @return the encapsulated exception
*/
public Throwable getReason() {
return reason;
}
/**
* Returns the Evaluation that was the root evaluation when the exception was
* thrown.
*/
public Evaluation getEvaluation() {
return evaluation;
}
/**
* Sets the Evaluation that was current when this exception was thrown.
*/
public void setEvaluation(Evaluation value) {
evaluation = value;
}
/**
* Returns a string representation of this exception.
*
* @return a string representation of this exception
*/
public String toString() {
if (reason == null)
return super.toString();
return super.toString() + " [" + reason + "]";
}
/**
* Prints the stack trace for this (and possibly the encapsulated) exception on
* System.err.
*/
public void printStackTrace() {
printStackTrace(System.err);
}
/**
* Prints the stack trace for this (and possibly the encapsulated) exception on the
* given print stream.
*/
public void printStackTrace(java.io.PrintStream s) {
synchronized (s) {
super.printStackTrace(s);
if (reason != null) {
s.println("/-- Encapsulated exception ------------\\");
reason.printStackTrace(s);
s.println("\\--------------------------------------/");
}
}
}
/**
* Prints the stack trace for this (and possibly the encapsulated) exception on the
* given print writer.
*/
public void printStackTrace(java.io.PrintWriter s) {
synchronized (s) {
super.printStackTrace(s);
if (reason != null) {
s.println("/-- Encapsulated exception ------------\\");
reason.printStackTrace(s);
s.println("\\--------------------------------------/");
}
}
}
}
|