/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.jxpath;
/**
* Thrown in various situations by JXPath; may contain a nested exception.
*
* @author Dmitri Plotnikov
* @version $Revision: 618149 $ $Date: 2008-02-03 20:04:13 -0600 (Sun, 03 Feb 2008) $
*/
public class JXPathException extends RuntimeException {
private static final long serialVersionUID = 4306409701468017766L;
/** @serial */
private Throwable exception;
/**
* Create a new <code>JXPathException</code> with no
* detail mesage.
*/
public JXPathException() {
super();
this.exception = null;
}
/**
* Create a new <code>JXPathException</code> with
* the <code>String </code> specified as an error message.
*
* @param msg The error message for the exception.
*/
public JXPathException(String msg) {
super(msg);
this.exception = null;
}
/**
* Create a new <code>JXPathException</code> with a
* given <code>Throwable</code> base cause of the error.
*
* @param e The exception to be encapsulated in a
* JXPathException.
*/
public JXPathException(Throwable e) {
super(e.toString());
this.exception = e;
}
/**
* Create a new <code>JXPathException</code> with the
* given <code>Exception</code> base cause and detail message.
*
* @param msg The detail message.
* @param e The exception to be encapsulated in a JXPathException
*/
public JXPathException(String msg, Throwable e) {
super(msg);
this.exception = e;
}
/**
* Return the message (if any) for this error . If there is no
* message for the exception and there is an encapsulated
* exception then the message of that exception will be returned.
*
* @return The error message.
*/
public String getMessage() {
String message = super.getMessage();
if (exception == null) {
return message;
}
StringBuffer buf = new StringBuffer();
if (message != null) {
buf.append(message).append("; ");
}
String eMsg = exception.getMessage();
buf.append(eMsg == null ? exception.getClass().getName() : eMsg);
return buf.toString();
}
/**
* Return the actual exception (if any) that caused this exception to
* be raised.
*
* @return The encapsulated exception, or null if there is none.
*/
public Throwable getException() {
return exception;
}
/**
* Same as {@link #getException() getException()}
* @return The encapsulated exception, or null if there is none.
*/
public Throwable getCause() {
return exception;
}
}
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