com.sun.faces.application.InjectionApplicationFactory 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.
/*
* 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.application;
import java.lang.reflect.Field;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.text.MessageFormat;
import javax.faces.application.ApplicationFactory;
import javax.faces.application.Application;
import javax.faces.context.FacesContext;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.util.Util;
import java.util.Map;
import javax.faces.FacesWrapper;
/**
* This {@link javax.faces.application.ApplicationFactory} is responsible for injecting the
* default {@link Application} instance into the top-level {@link Application}
* as configured by the runtime. Doing this allows us to preserve backwards
* compatibility as the API evolves without having the API rely on implementation
* specific details.
*/
public class InjectionApplicationFactory extends ApplicationFactory implements FacesWrapper {
private static final Logger LOGGER = FacesLogger.APPLICATION.getLogger();
private ApplicationFactory delegate;
private Application defaultApplication;
private Field defaultApplicationField;
private volatile Application application;
// ------------------------------------------------------------ Constructors
public InjectionApplicationFactory(ApplicationFactory delegate) {
Util.notNull("applicationFactory", delegate);
this.delegate = delegate;
}
// ----------------------------------------- Methods from ApplicationFactory
public Application getApplication() {
if (application == null) {
application = delegate.getApplication();
if (application == null) {
// No i18n here
String message = MessageFormat
.format("Delegate ApplicationContextFactory, {0}, returned null when calling getApplication().",
delegate.getClass().getName());
throw new IllegalStateException(message);
}
injectDefaultApplication();
}
return application;
}
public synchronized void setApplication(Application application) {
this.application = application;
delegate.setApplication(application);
injectDefaultApplication();
}
// ----------------------------------------------- Methods from FacesWrapper
@Override
public ApplicationFactory getWrapped() {
return delegate;
}
// --------------------------------------------------------- Private Methods
private void injectDefaultApplication() {
if (defaultApplication == null) {
FacesContext ctx = FacesContext.getCurrentInstance();
defaultApplication = InjectionApplicationFactory.
removeApplicationInstance(ctx.getExternalContext().getApplicationMap());
}
if (defaultApplication != null) {
try {
if (defaultApplicationField == null) {
defaultApplicationField =
Application.class
.getDeclaredField("defaultApplication");
defaultApplicationField.setAccessible(true);
}
defaultApplicationField.set(application, defaultApplication);
} catch (NoSuchFieldException nsfe) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Unable to find private field named 'defaultApplication' in javax.faces.application.Application.");
}
} catch (Exception e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE, e.toString(), e);
}
}
}
}
// ------------------------------------------------- Package private Methods
static void setApplicationInstance(Application app) {
Map appMap = FacesContext.getCurrentInstance().getExternalContext().getApplicationMap();
appMap.put(InjectionApplicationFactory.class.getName(), app);
}
static Application removeApplicationInstance(Map appMap) {
return (Application) appMap.remove(InjectionApplicationFactory.class.getName());
}
}