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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright 2003-2007 Jive Software.
*
* All rights reserved. Licensed 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.jivesoftware.smack;
import org.jivesoftware.smack.packet.StreamError;
import org.jivesoftware.smack.packet.XMPPError;
import java.io.PrintStream;
import java.io.PrintWriter;
/**
* A generic exception that is thrown when an error occurs performing an
* XMPP operation. XMPP servers can respond to error conditions with an error code
* and textual description of the problem, which are encapsulated in the XMPPError
* class. When appropriate, an XMPPError instance is attached instances of this exception.<p>
*
* When a stream error occured, the server will send a stream error to the client before
* closing the connection. Stream errors are unrecoverable errors. When a stream error
* is sent to the client an XMPPException will be thrown containing the StreamError sent
* by the server.
*
* @see XMPPError
* @author Matt Tucker
*/
public class XMPPException extends Exception {
private StreamError streamError = null;
private XMPPError error = null;
private Throwable wrappedThrowable = null;
/**
* Creates a new XMPPException.
*/
public XMPPException() {
super();
}
/**
* Creates a new XMPPException with a description of the exception.
*
* @param message description of the exception.
*/
public XMPPException(String message) {
super(message);
}
/**
* Creates a new XMPPException with the Throwable that was the root cause of the
* exception.
*
* @param wrappedThrowable the root cause of the exception.
*/
public XMPPException(Throwable wrappedThrowable) {
super();
this.wrappedThrowable = wrappedThrowable;
}
/**
* Cretaes a new XMPPException with the stream error that was the root case of the
* exception. When a stream error is received from the server then the underlying
* TCP connection will be closed by the server.
*
* @param streamError the root cause of the exception.
*/
public XMPPException(StreamError streamError) {
super();
this.streamError = streamError;
}
/**
* Cretaes a new XMPPException with the XMPPError that was the root case of the
* exception.
*
* @param error the root cause of the exception.
*/
public XMPPException(XMPPError error) {
super();
this.error = error;
}
/**
* Creates a new XMPPException with a description of the exception and the
* Throwable that was the root cause of the exception.
*
* @param message a description of the exception.
* @param wrappedThrowable the root cause of the exception.
*/
public XMPPException(String message, Throwable wrappedThrowable) {
super(message);
this.wrappedThrowable = wrappedThrowable;
}
/**
* Creates a new XMPPException with a description of the exception, an XMPPError,
* and the Throwable that was the root cause of the exception.
*
* @param message a description of the exception.
* @param error the root cause of the exception.
* @param wrappedThrowable the root cause of the exception.
*/
public XMPPException(String message, XMPPError error, Throwable wrappedThrowable) {
super(message);
this.error = error;
this.wrappedThrowable = wrappedThrowable;
}
/**
* Creates a new XMPPException with a description of the exception and the
* XMPPException that was the root cause of the exception.
*
* @param message a description of the exception.
* @param error the root cause of the exception.
*/
public XMPPException(String message, XMPPError error) {
super(message);
this.error = error;
}
/**
* Returns the XMPPError asscociated with this exception, or <tt>null</tt> if there
* isn't one.
*
* @return the XMPPError asscociated with this exception.
*/
public XMPPError getXMPPError() {
return error;
}
/**
* Returns the StreamError asscociated with this exception, or <tt>null</tt> if there
* isn't one. The underlying TCP connection is closed by the server after sending the
* stream error to the client.
*
* @return the StreamError asscociated with this exception.
*/
public StreamError getStreamError() {
return streamError;
}
/**
* Returns the Throwable asscociated with this exception, or <tt>null</tt> if there
* isn't one.
*
* @return the Throwable asscociated with this exception.
*/
public Throwable getWrappedThrowable() {
return wrappedThrowable;
}
public void printStackTrace() {
printStackTrace(System.err);
}
public void printStackTrace(PrintStream out) {
super.printStackTrace(out);
if (wrappedThrowable != null) {
out.println("Nested Exception: ");
wrappedThrowable.printStackTrace(out);
}
}
public void printStackTrace(PrintWriter out) {
super.printStackTrace(out);
if (wrappedThrowable != null) {
out.println("Nested Exception: ");
wrappedThrowable.printStackTrace(out);
}
}
public String getMessage() {
String msg = super.getMessage();
// If the message was not set, but there is an XMPPError, return the
// XMPPError as the message.
if (msg == null && error != null) {
return error.toString();
}
else if (msg == null && streamError != null) {
return streamError.toString();
}
return msg;
}
public String toString() {
StringBuilder buf = new StringBuilder();
String message = super.getMessage();
if (message != null) {
buf.append(message).append(": ");
}
if (error != null) {
buf.append(error);
}
if (streamError != null) {
buf.append(streamError);
}
if (wrappedThrowable != null) {
buf.append("\n -- caused by: ").append(wrappedThrowable);
}
return buf.toString();
}
}
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