com.sun.faces.context.AjaxExceptionHandlerImpl Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-impl Show documentation
Show all versions of jsf-impl Show documentation
This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.context;
import java.io.IOException;
import java.util.LinkedList;
import java.util.Collections;
import java.util.Iterator;
import java.util.logging.Logger;
import java.util.logging.Level;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.ExceptionHandler;
import javax.faces.context.ExceptionHandlerWrapper;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialResponseWriter;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ExceptionQueuedEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.ExceptionQueuedEventContext;
import javax.faces.event.PhaseId;
import com.sun.faces.util.FacesLogger;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.faces.application.ProjectStage;
/**
*
* A specialized implementation of {@link ExceptionHandler} for JSF 2.0 that
* handles exceptions by writing error information to the
* partial response.
*
*
*/
public class AjaxExceptionHandlerImpl extends ExceptionHandlerWrapper {
private static final Logger LOGGER = FacesLogger.CONTEXT.getLogger();
private static final String LOG_BEFORE_KEY =
"jsf.context.exception.handler.log_before";
private static final String LOG_AFTER_KEY =
"jsf.context.exception.handler.log_after";
private static final String LOG_KEY =
"jsf.context.exception.handler.log";
private LinkedList unhandledExceptions;
private LinkedList handledExceptions;
private ExceptionQueuedEvent handled;
private ExceptionHandler exceptionHandler = null;
public AjaxExceptionHandlerImpl(ExceptionHandler handler) {
this.exceptionHandler = handler;
}
public ExceptionHandler getWrapped() {
return this.exceptionHandler;
}
/**
* @see ExceptionHandler#getHandledExceptionQueuedEvent()
*/
@Override
public ExceptionQueuedEvent getHandledExceptionQueuedEvent() {
return handled;
}
/**
* @see javax.faces.context.ExceptionHandlerWrapper#handle()
*/
public void handle() throws FacesException {
for (Iterator i = getUnhandledExceptionQueuedEvents().iterator(); i.hasNext(); ) {
ExceptionQueuedEvent event = i.next();
ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource();
try {
Throwable t = context.getException();
if (isRethrown(t)) {
handled = event;
Throwable unwrapped = getRootCause(t);
if (unwrapped != null) {
handlePartialResponseError(context.getContext(), unwrapped);
} else {
if (t instanceof FacesException) {
handlePartialResponseError(context.getContext(), t);
} else {
handlePartialResponseError(context.getContext(),
new FacesException(t.getMessage(), t));
}
}
} else {
log(context);
}
} finally {
if (handledExceptions == null) {
handledExceptions = new LinkedList();
}
handledExceptions.add(event);
i.remove();
}
}
}
/**
* @see javax.faces.context.ExceptionHandlerWrapper#processEvent(javax.faces.event.SystemEvent)
*/
public void processEvent(SystemEvent event) throws AbortProcessingException {
if (event != null) {
if (unhandledExceptions == null) {
unhandledExceptions = new LinkedList();
}
unhandledExceptions.add((ExceptionQueuedEvent) event);
}
}
/**
* @see javax.faces.context.ExceptionHandlerWrapper#getUnhandledExceptionQueuedEvents()
*/
public Iterable getUnhandledExceptionQueuedEvents() {
return ((unhandledExceptions != null)
? unhandledExceptions
: Collections.emptyList());
}
/**
* @see javax.faces.context.ExceptionHandlerWrapper#getHandledExceptionQueuedEvents()
*/
public Iterable getHandledExceptionQueuedEvents() {
return ((handledExceptions != null)
? handledExceptions
: Collections.emptyList());
}
// --------------------------------------------------------- Private Methods
private void handlePartialResponseError(FacesContext context, Throwable t) {
if (context.getResponseComplete()) {
return; // don't write anything if the response is complete
}
try {
ExternalContext extContext = context.getExternalContext();
extContext.setResponseContentType("text/xml");
extContext.addResponseHeader("Cache-Control", "no-cache");
PartialResponseWriter writer = context.getPartialViewContext().getPartialResponseWriter();
writer.startDocument();
writer.startError(t.getClass().toString());
String msg;
if (context.isProjectStage(ProjectStage.Production)) {
msg = "See your server log for more information";
} else {
if (t.getCause() != null) {
msg = t.getCause().getMessage();
} else {
msg = t.getMessage();
}
}
writer.write(((msg != null) ? msg : ""));
writer.endError();
writer.endDocument();
if (LOGGER.isLoggable(Level.SEVERE)) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
t.printStackTrace(pw);
LOGGER.log(Level.SEVERE, sw.toString());
}
context.responseComplete();
} catch (IOException ioe) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE,
ioe.toString(),
ioe);
}
}
}
private boolean isRethrown(Throwable t) {
return (!(t instanceof AbortProcessingException));
}
private void log(ExceptionQueuedEventContext exceptionContext) {
UIComponent c = exceptionContext.getComponent();
boolean beforePhase = exceptionContext.inBeforePhase();
boolean afterPhase = exceptionContext.inAfterPhase();
PhaseId phaseId = exceptionContext.getPhaseId();
Throwable t = exceptionContext.getException();
String key = getLoggingKey(beforePhase, afterPhase);
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE,
key,
new Object[] { t.getClass().getName(),
phaseId.toString(),
((c != null) ? c.getClientId(exceptionContext.getContext()) : ""),
t.getMessage()});
LOGGER.log(Level.SEVERE, t.getMessage(), t);
}
}
private String getLoggingKey(boolean beforePhase, boolean afterPhase) {
if (beforePhase) {
return LOG_BEFORE_KEY;
} else if (afterPhase) {
return LOG_AFTER_KEY;
} else {
return LOG_KEY;
}
}
}