public void render(FacesContext context) throws FacesException {
if (context.getResponseComplete()) return;
Application app = context.getApplication();
ViewHandler view = app.getViewHandler();
beforePhase(context, PhaseId.RENDER_RESPONSE);
try {
if (log.isLoggable(Level.FINER)) log.finer(context.getViewRoot() + " before render view");
view.renderView(context, context.getViewRoot());
} catch (java.io.IOException e) {
if (sendError(context, "renderView", e)) return;
throw new FacesException(e);
} catch (RuntimeException e) {
if (sendError(context, "renderView", e)) return;
throw e;
} finally {
afterPhase(context, PhaseId.RENDER_RESPONSE);
logMessages(context);
}
}
private void restoreView(FacesContext context) throws FacesException {
Application app = context.getApplication();
if (app instanceof ApplicationImpl) ((ApplicationImpl) app).initRequest();
ViewHandler view = app.getViewHandler();
view.initView(context);
UIViewRoot viewRoot = context.getViewRoot();
if (viewRoot != null) {
ExternalContext extContext = context.getExternalContext();
viewRoot.setLocale(extContext.getRequestLocale());
doSetBindings(context.getELContext(), viewRoot);
return;
}
String viewId = calculateViewId(context);
String renderKitId = view.calculateRenderKitId(context);
RenderKitFactory renderKitFactory =
(RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
RenderKit renderKit = renderKitFactory.getRenderKit(context, renderKitId);
ResponseStateManager stateManager = renderKit.getResponseStateManager();
if (stateManager.isPostback(context)) {
viewRoot = view.restoreView(context, viewId);
if (viewRoot != null) {
doSetBindings(context.getELContext(), viewRoot);
} else {
// XXX: backward compat issues with ViewHandler and StateManager
// throw new ViewExpiredException(L.l("{0} is an expired view", viewId));
context.renderResponse();
viewRoot = view.createView(context, viewId);
context.setViewRoot(viewRoot);
}
context.setViewRoot(viewRoot);
} else {
context.renderResponse();
viewRoot = view.createView(context, viewId);
context.setViewRoot(viewRoot);
}
}
private void logMessages(FacesContext context) {
UIViewRoot root = context.getViewRoot();
String viewId = "";
if (root != null) viewId = root.getViewId();
Iterator<FacesMessage> iter = context.getMessages();
while (iter != null && iter.hasNext()) {
FacesMessage msg = iter.next();
if (log.isLoggable(Level.FINE)) {
if (msg.getDetail() != null)
log.fine(
viewId + " [ " + msg.getSeverity() + "] " + msg.getSummary() + " " + msg.getDetail());
else log.fine(viewId + " [ " + msg.getSeverity() + "] " + msg.getSummary());
}
}
}
public static UIViewRoot findRoot(FacesContext context, ServletRequest req, Object etag)
throws Exception {
if (context == null) context = FacesContext.getCurrentInstance();
UIViewRoot root = context.getViewRoot();
if (root == null)
throw new NullPointerException(L.l("f:view can't find current in FacesContext"));
Object oldETag = root.getAttributes().get("caucho.etag");
if (oldETag != null && !oldETag.equals(etag)) {
// clear view on JSP change
root.getChildren().clear();
root.getFacets().clear();
}
root.getAttributes().put("caucho.etag", etag);
return root;
}
public void execute(FacesContext context) throws FacesException {
boolean isFiner = log.isLoggable(Level.FINER);
if (context.getResponseComplete() || context.getRenderResponse()) return;
beforePhase(context, PhaseId.RESTORE_VIEW);
try {
if (isFiner) log.finer("JSF[] before restore view");
restoreView(context);
} finally {
afterPhase(context, PhaseId.RESTORE_VIEW);
}
if (context.getResponseComplete() || context.getRenderResponse()) return;
UIViewRoot viewRoot = context.getViewRoot();
beforePhase(context, PhaseId.APPLY_REQUEST_VALUES);
try {
if (isFiner) log.finer(context.getViewRoot() + " before process decodes");
viewRoot.processDecodes(context);
} catch (RuntimeException e) {
log.log(Level.WARNING, e.toString(), e);
} finally {
afterPhase(context, PhaseId.APPLY_REQUEST_VALUES);
}
//
// Process Validations (processValidators)
//
if (context.getResponseComplete() || context.getRenderResponse()) return;
beforePhase(context, PhaseId.PROCESS_VALIDATIONS);
try {
if (isFiner) log.finer(context.getViewRoot() + " before process validators");
viewRoot.processValidators(context);
} finally {
afterPhase(context, PhaseId.PROCESS_VALIDATIONS);
}
//
// Update Model Values (processUpdates)
//
if (context.getResponseComplete() || context.getRenderResponse()) return;
beforePhase(context, PhaseId.UPDATE_MODEL_VALUES);
try {
if (isFiner) log.finer(context.getViewRoot() + " before process updates");
viewRoot.processUpdates(context);
} catch (RuntimeException e) {
if (sendError(context, "processUpdates", e)) return;
} finally {
afterPhase(context, PhaseId.UPDATE_MODEL_VALUES);
}
//
// Invoke Application (processApplication)
//
if (context.getResponseComplete() || context.getRenderResponse()) return;
beforePhase(context, PhaseId.INVOKE_APPLICATION);
try {
if (isFiner) log.finer(context.getViewRoot() + " before process application");
viewRoot.processApplication(context);
} finally {
afterPhase(context, PhaseId.INVOKE_APPLICATION);
}
}
private boolean sendError(FacesContext context, String lifecycle, Exception e) {
for (Throwable cause = e; cause != null; cause = cause.getCause()) {
if (cause instanceof DisplayableException) {
if (e instanceof RuntimeException) throw (RuntimeException) e;
else throw new FacesException(e);
} else if (cause instanceof ServletException) throw new FacesException(e);
else if (cause instanceof JspException) throw new FacesException(e);
}
ExternalContext extContext = context.getExternalContext();
Object response = extContext.getResponse();
if (!(response instanceof HttpServletResponse)) {
context.renderResponse();
if (e instanceof RuntimeException) throw (RuntimeException) e;
else throw new RuntimeException(e);
}
log.log(Level.WARNING, e.toString(), e);
HttpServletResponse res = (HttpServletResponse) response;
try {
context.renderResponse();
context.responseComplete();
res.setStatus(500, "JSF Exception");
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("<body>");
out.println("<h3>JSF exception detected in " + lifecycle + " phase</h3>");
String msg = e.getMessage();
out.println("<span style='color:red;font:bold'>" + Html.escapeHtml(msg) + "</span><br/>");
out.println("<h3>Context: " + context.getViewRoot() + "</h3>");
out.println("<code><pre>");
String errorId = null;
if (e instanceof FacesException && msg.startsWith("id=")) {
int p = msg.indexOf(' ');
errorId = msg.substring(3, p);
}
printComponentTree(out, errorId, context, context.getViewRoot(), 0);
out.println("</pre></code>");
if (!Alarm.isTest()) {
out.println("<h3>Stack Trace</h3>");
out.println("<pre>");
if (e.getCause() != null) e.getCause().printStackTrace(out);
else e.printStackTrace(out);
out.println("</pre>");
}
out.println("</body>");
// clear, so we don't just loop
Application app = context.getApplication();
ViewHandler view = app.getViewHandler();
UIViewRoot viewRoot = context.getViewRoot();
viewRoot = view.createView(context, viewRoot.getViewId());
context.setViewRoot(viewRoot);
// view.writeState(context); // XXX: no need to output state, but review.
return true;
} catch (IOException e1) {
throw new RuntimeException(e);
}
}