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Jakarta Faces defines an MVC framework for building user interfaces for web applications,
including UI components, state management, event handing, input validation, page navigation, and
support for internationalization and accessibility.
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.faces.config.processor;
import static java.text.MessageFormat.format;
import static java.util.Arrays.asList;
import static java.util.logging.Level.FINE;
import java.text.MessageFormat;
import java.util.Deque;
import java.util.List;
import java.util.concurrent.ConcurrentLinkedDeque;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.sun.faces.application.InjectionApplicationFactory;
import com.sun.faces.config.ConfigurationException;
import com.sun.faces.config.InitFacesContext;
import com.sun.faces.config.manager.documents.DocumentInfo;
import com.sun.faces.context.InjectionFacesContextFactory;
import com.sun.faces.util.FacesLogger;
import jakarta.faces.FactoryFinder;
import jakarta.faces.context.FacesContext;
import jakarta.servlet.ServletContext;
/**
*
* This ConfigProcessor handles all elements defined under /faces-config/factory.
*
*/
public class FactoryConfigProcessor extends AbstractConfigProcessor {
private static final Logger LOGGER = FacesLogger.CONFIG.getLogger();
/**
* /faces-config/factory
*/
private static final String FACTORY = "factory";
/**
* /faces-config/factory/application-factory
*/
private static final String APPLICATION_FACTORY = "application-factory";
/**
* /faces-config/factory/exception-handler-factory
*/
private static final String EXCEPTION_HANDLER_FACTORY = "exception-handler-factory";
/**
* /faces-config/factory/flash-factory
*/
private static final String FLASH_FACTORY = "flash-factory";
/**
* /faces-config/factory/visit-context-factory
*/
private static final String VISIT_CONTEXT_FACTORY = "visit-context-factory";
/**
* /faces-config/factory/view-declaration-language-factory
*/
private static final String VIEW_DECLARATION_LANGUAGE_FACTORY = "view-declaration-language-factory";
/**
* /faces-config/factory/tag-handler-helper-factory
*/
private static final String TAG_HANDLER_DELEGATE_FACTORY = "tag-handler-delegate-factory";
/**
* /faces-config/factory/facelet-cache-factory
*/
private static final String FACELET_CACHE_FACTORY = "facelet-cache-factory";
/**
* /faces-config/factory/faces-context-factory
*/
private static final String FACES_CONTEXT_FACTORY = "faces-context-factory";
/**
* /faces-config/factory/client-window-factory
*/
private static final String CLIENT_WINDOW_FACTORY = "client-window-factory";
/**
* /faces-config/factory/partial-view-context-factory
*/
private static final String PARTIAL_VIEW_CONTEXT_FACTORY = "partial-view-context-factory";
/**
* faces-config/factory/lifecycle-factory
*/
private static final String LIFECYCLE_FACTORY = "lifecycle-factory";
/**
* /faces-config/factory/render-kit-factory
*/
private static final String RENDER_KIT_FACTORY = "render-kit-factory";
/**
* /faces-config/factory/external-context-factory
*/
private static final String EXTERNAL_CONTEXT_FACTORY = "external-context-factory";
/**
* /faces-config/factory/flow-handler-factory
*/
private static final String FLOW_HANDLER_FACTORY = "flow-handler-factory";
/**
* /faces-config/factory/search-expression-context-factory
*/
private static final String SEARCH_EXPRESSION_CONTEXT_FACTORY = "search-expression-context-factory";
/**
* Array of Factory names for post-configuration validation.
*/
private final List factoryNames = asList(FactoryFinder.APPLICATION_FACTORY, FactoryFinder.CLIENT_WINDOW_FACTORY,
FactoryFinder.EXCEPTION_HANDLER_FACTORY, FactoryFinder.EXTERNAL_CONTEXT_FACTORY, FactoryFinder.FACES_CONTEXT_FACTORY, FactoryFinder.FLASH_FACTORY,
FactoryFinder.LIFECYCLE_FACTORY, FactoryFinder.VIEW_DECLARATION_LANGUAGE_FACTORY, FactoryFinder.PARTIAL_VIEW_CONTEXT_FACTORY,
FactoryFinder.RENDER_KIT_FACTORY, FactoryFinder.VISIT_CONTEXT_FACTORY, FactoryFinder.FACELET_CACHE_FACTORY,
FactoryFinder.TAG_HANDLER_DELEGATE_FACTORY, FactoryFinder.FLOW_HANDLER_FACTORY, FactoryFinder.SEARCH_EXPRESSION_CONTEXT_FACTORY);
private boolean validateFactories = true;
// ------------------------------------------------------------ Constructors
public FactoryConfigProcessor() {
}
// Only called by the cactus test code
public FactoryConfigProcessor(boolean validateFactories) {
this.validateFactories = validateFactories;
}
// -------------------------------------------- Methods from ConfigProcessor
@Override
public void process(ServletContext servletContext, FacesContext facesContext, DocumentInfo[] documentInfos) throws Exception {
// track how many FacesContextFactory instances are being added
// for this application
AtomicInteger facesContextFactoryCount = new AtomicInteger(0);
// track how many ApplicationFactory instances are being added
// for this application
AtomicInteger applicationFactoryCount = new AtomicInteger(0);
for (DocumentInfo documentInfo : documentInfos) {
if (LOGGER.isLoggable(FINE)) {
LOGGER.log(FINE, format("Processing factory elements for document: ''{0}''", documentInfo.getSourceURI()));
}
Document document = documentInfo.getDocument();
String namespace = document.getDocumentElement().getNamespaceURI();
NodeList factories = document.getDocumentElement().getElementsByTagNameNS(namespace, FACTORY);
if (factories != null && factories.getLength() > 0) {
processFactories(factories, namespace, facesContextFactoryCount, applicationFactoryCount);
}
}
// If there are more than one ApplicationFactory, FacesContextFactory,
// or ExternalContextFactory defined, we will push our Injection
// factories onto the factory list so that they are the top-level
// factory. This allows us to inject the default instances into the
// custom Application, FacesContext, or ExternalContext
// implementations to get around version compatibility issues.
// This *must* be called *before* verifyFactoriesExist() as once that
// is called, we can't make any changes to the Factory delegation
// chain.
wrapFactories(applicationFactoryCount.get(), facesContextFactoryCount.get());
// Validate that we actually have factories at this point.
verifyFactoriesExist(servletContext);
}
// --------------------------------------------------------- Private Methods
private void processFactories(NodeList factories, String namespace, AtomicInteger fcCount, AtomicInteger appCount) {
for (int i = 0, size = factories.getLength(); i < size; i++) {
Node factory = factories.item(i);
NodeList children = ((Element) factory).getElementsByTagNameNS(namespace, "*");
for (int c = 0, csize = children.getLength(); c < csize; c++) {
Node childNode = children.item(c);
switch (childNode.getLocalName()) {
case APPLICATION_FACTORY:
int cnt = appCount.incrementAndGet();
setFactory(FactoryFinder.APPLICATION_FACTORY, getNodeText(childNode));
break;
case EXCEPTION_HANDLER_FACTORY:
setFactory(FactoryFinder.EXCEPTION_HANDLER_FACTORY, getNodeText(childNode));
break;
case VISIT_CONTEXT_FACTORY:
setFactory(FactoryFinder.VISIT_CONTEXT_FACTORY, getNodeText(childNode));
break;
case LIFECYCLE_FACTORY:
setFactory(FactoryFinder.LIFECYCLE_FACTORY, getNodeText(childNode));
break;
case FLASH_FACTORY:
setFactory(FactoryFinder.FLASH_FACTORY, getNodeText(childNode));
break;
case CLIENT_WINDOW_FACTORY:
setFactory(FactoryFinder.CLIENT_WINDOW_FACTORY, getNodeText(childNode));
break;
case FACES_CONTEXT_FACTORY:
fcCount.incrementAndGet();
setFactory(FactoryFinder.FACES_CONTEXT_FACTORY, getNodeText(childNode));
break;
case RENDER_KIT_FACTORY:
setFactory(FactoryFinder.RENDER_KIT_FACTORY, getNodeText(childNode));
break;
case VIEW_DECLARATION_LANGUAGE_FACTORY:
setFactory(FactoryFinder.VIEW_DECLARATION_LANGUAGE_FACTORY, getNodeText(childNode));
break;
case TAG_HANDLER_DELEGATE_FACTORY:
setFactory(FactoryFinder.TAG_HANDLER_DELEGATE_FACTORY, getNodeText(childNode));
break;
case FACELET_CACHE_FACTORY:
setFactory(FactoryFinder.FACELET_CACHE_FACTORY, getNodeText(childNode));
break;
case EXTERNAL_CONTEXT_FACTORY:
setFactory(FactoryFinder.EXTERNAL_CONTEXT_FACTORY, getNodeText(childNode));
break;
case PARTIAL_VIEW_CONTEXT_FACTORY:
setFactory(FactoryFinder.PARTIAL_VIEW_CONTEXT_FACTORY, getNodeText(childNode));
break;
case FLOW_HANDLER_FACTORY:
setFactory(FactoryFinder.FLOW_HANDLER_FACTORY, getNodeText(childNode));
break;
case SEARCH_EXPRESSION_CONTEXT_FACTORY:
setFactory(FactoryFinder.SEARCH_EXPRESSION_CONTEXT_FACTORY, getNodeText(childNode));
break;
}
}
}
}
private static void setFactory(String factoryName, String factoryImpl) {
if (factoryName != null && factoryImpl != null) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, MessageFormat.format("Calling FactoryFinder.setFactory({0}, {1})", factoryName, factoryImpl));
}
FactoryFinder.setFactory(factoryName, factoryImpl);
}
}
private void verifyFactoriesExist(ServletContext servletContext) {
if (validateFactories) {
Deque exceptions = new ConcurrentLinkedDeque<>();
ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
try {
factoryNames.stream().forEach(e -> {
Thread.currentThread().setContextClassLoader(contextClassLoader);
InitFacesContext.getInstance(servletContext);
try {
FactoryFinder.getFactory(e);
} catch (Exception exception) {
exception.printStackTrace();
exceptions.add(new ConfigurationException(format("Factory ''{0}'' was not configured properly.", e), exception));
} finally {
Thread.currentThread().setContextClassLoader(null);
}
});
} finally {
Thread.currentThread().setContextClassLoader(contextClassLoader);
}
}
}
private void wrapFactories(int appCount, int fcCount) {
if (appCount > 1) {
addInjectionApplicationFactory();
}
if (fcCount > 1) {
addInjectionFacesContextFactory();
}
}
/**
* Add the InjectionApplicationFactory as the top-level ApplicationFactory so that the default instances, provided by
* {@link com.sun.faces.application.ApplicationFactoryImpl} can be injected into the actual top-level FacesContext
* instance (that which is returned by the InjectionFacesContextFactory's delegate).
*/
private void addInjectionApplicationFactory() {
FactoryFinder.setFactory(FactoryFinder.APPLICATION_FACTORY, InjectionApplicationFactory.class.getName());
}
/**
* Add the InjectionFacesContextFactory as the top-level FacesContextFactory so that the default instances, provided by
* {@link com.sun.faces.context.FacesContextFactoryImpl} can be injected into the actual top-level FacesContext instance
* (that which is returned by the InjectionFacesContextFactory's delegate).
*/
private void addInjectionFacesContextFactory() {
FactoryFinder.setFactory(FactoryFinder.FACES_CONTEXT_FACTORY, InjectionFacesContextFactory.class.getName());
}
}
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