org.jboss.portletbridge.ExceptionHandlerBase Maven / Gradle / Ivy
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* published by the Free Software Foundation; either version 2.1 of *
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* *
* This software 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. *
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package org.jboss.portletbridge;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import javax.faces.application.ViewExpiredException;
import javax.faces.context.FacesContext;
import javax.portlet.PortletRequest;
import javax.portlet.ResourceResponse;
import javax.portlet.faces.Bridge;
import javax.portlet.faces.BridgeException;
import javax.servlet.http.HttpServletResponse;
import org.jboss.portletbridge.context.PortletBridgeContext;
/**
* @author asmirnov
*
*/
public abstract class ExceptionHandlerBase implements ExceptionHandler {
private static final String HANDLE_VIEW_EXPIRED_ON_CLIENT = "org.ajax4jsf.handleViewExpiredOnClient";
private static final String AJAX_FLAG_HEADER = "Ajax-Response";
public static final String AJAX_EXPIRED = "Ajax-Expired";
/*
* (non-Javadoc)
*
* @see
* org.jboss.portletbridge.ExceptionHandler#processRenderException(javax
* .faces.context.FacesContext,
* org.jboss.portletbridge.application.PortletViewState,
* java.lang.Exception)
*/
public void processRenderException(FacesContext context,
BridgeRequestScope windowState, Exception e) throws BridgeException {
String redirectViewId = processException(context, windowState, e);
if (null != redirectViewId) {
PortletBridgeContext bridgeContext = PortletBridgeContext
.getCurrentInstance(context);
PortletRequest request = (PortletRequest) context
.getExternalContext().getRequest();
bridgeContext.resetRequestAttributes(request);
windowState.restoreBeans(context);
renderErrorPage(context, windowState, e, redirectViewId);
} else {
throw new BridgeException("Error processing render lifecycle", e);
}
}
public void processResourceException(FacesContext facesContext,
BridgeRequestScope windowState, Exception e) throws BridgeException {
windowState.saveRequestParameters(facesContext);
String redirectViewId = processException(facesContext, windowState, e);
if (null != redirectViewId) {
renderErrorPage(facesContext, windowState, e, redirectViewId);
} else {
// PBR-127, richFaces viewExpired processing.
boolean handleViewExpiredOnClient = Boolean
.parseBoolean(facesContext.getExternalContext()
.getInitParameter(
HANDLE_VIEW_EXPIRED_ON_CLIENT));
if (handleViewExpiredOnClient && isViewExpired(e)) {
sendAjaxViewExpired(facesContext, e);
} else {
throw new BridgeException("Error processing resource lifecycle",
e);
}
}
}
private void sendAjaxViewExpired(FacesContext facesContext, Exception e) {
ResourceResponse response = (ResourceResponse) facesContext
.getExternalContext().getResponse();
try {
response.reset();
String message;
try {
ResourceBundle resourceBundle = ResourceBundle
.getBundle("org.ajax4jsf.messages",
facesContext.getApplication()
.getViewHandler()
.calculateLocale(facesContext),
Thread.currentThread()
.getContextClassLoader());
message = resourceBundle.getString("AJAX_VIEW_EXPIRED");
} catch (MissingResourceException e2) {
message = "%AJAX_VIEW_EXPIRED%";
}
response.setProperty(AJAX_EXPIRED, message);
response.setContentType("text/xml");
PrintWriter output = response.getWriter();
output
.write("\n"
+ ""
+ ""
+ ""
+ "");
output.flush();
} catch (IOException e1) {
throw new BridgeException("Error render Ajax-expired content",
e);
}
}
public void processEventException(FacesContext facesContext, BridgeRequestScope windowState, Exception e)
throws BridgeException {
throw new BridgeException("Error processing faces lifecycle from event request", e);
}
public void processActionException(FacesContext context, BridgeRequestScope windowState, Exception e)
throws BridgeException {
String errorPage = processException(context, windowState, e);
if (null != errorPage) {
windowState.reset();
setupErrorParameters(context,e);
windowState.setViewId(errorPage);
windowState.saveRequestParameters(context);
windowState.saveBeans(context);
} else {
throw new BridgeException("Error processing render lifecycle", e);
}
}
protected void renderErrorPage(FacesContext context,
BridgeRequestScope windowState, Exception e, String redirectViewId) {
PortletBridgeContext bridgeContext = PortletBridgeContext
.getCurrentInstance(context);
PortletRequest request = (PortletRequest) context.getExternalContext()
.getRequest();
Object response = context.getExternalContext().getResponse();
context.release();
request.setAttribute(Bridge.VIEW_ID, redirectViewId);
context = bridgeContext.getBridgeConfig().createFacesContext(request,
response);
windowState.restoreMessages(context);
setupErrorParameters(context, e);
bridgeContext.render(context);
}
protected abstract String processException(FacesContext facesContext,
BridgeRequestScope windowState, Exception e) ;
/**
* Check for a {@link ViewExpiredException} in the exception chain.
*
* @param e
* exception from filter chain
* @return true if any exception in the chain instance of the
* {@link ViewExpiredException}
*/
private boolean isViewExpired(Throwable e) {
while (null != e) {
if (e instanceof ViewExpiredException) {
return true;
} else {
e = e.getCause();
}
}
return false;
}
/**
* Simulate Servlet error page attributes.
* @param context
* @param throwable
*/
protected void setupErrorParameters(FacesContext context, Throwable throwable) {
Map requestMap = context.getExternalContext().getRequestMap();
requestMap.put("javax.servlet.error.exception", throwable);
requestMap.put("javax.servlet.error.status_code", HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
requestMap.put("javax.servlet.error.message", throwable.getLocalizedMessage());
requestMap.put("javax.servlet.error.servlet_name", "Faces Servlet");
}
}
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