/*
* $Id: AbstractConfigProcessor.java,v 1.5 2007/07/17 21:35:18 rlubke Exp $
*/
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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*
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* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.faces.config.processor;
import com.sun.faces.application.ApplicationResourceBundle;
import com.sun.faces.application.ApplicationAssociate;
import com.sun.faces.application.annotation.AnnotationManager;
import com.sun.faces.config.ConfigurationException;
import com.sun.faces.config.WebConfiguration;
import com.sun.faces.config.ConfigManager;
import com.sun.faces.config.WebConfiguration.WebContextInitParameter;
import com.sun.faces.util.ReflectionUtils;
import com.sun.faces.util.Util;
import com.sun.faces.scripting.RendererProxy;
import com.sun.faces.scripting.NavigationHandlerProxy;
import com.sun.faces.scripting.ELResolverProxy;
import com.sun.faces.scripting.PhaseListenerProxy;
import com.sun.faces.scripting.ViewHandlerProxy;
import com.sun.faces.scripting.ActionListenerProxy;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import javax.faces.FactoryFinder;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionListener;
import javax.faces.event.PhaseListener;
import javax.faces.render.Renderer;
import javax.faces.application.Application;
import javax.faces.application.ApplicationFactory;
import javax.faces.application.NavigationHandler;
import javax.faces.application.ViewHandler;
import javax.el.ELResolver;
import java.lang.reflect.Constructor;
import java.lang.annotation.Annotation;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* <p>
* This is the base <code>ConfigProcessor</code> that all concrete
* <code>ConfigProcessor</code> implementations should extend.
* </p>
*/
public abstract class AbstractConfigProcessor implements ConfigProcessor {
private ConfigProcessor nextProcessor;
// -------------------------------------------- Methods from ConfigProcessor
/**
* @see ConfigProcessor#setNext(ConfigProcessor)
*/
public void setNext(ConfigProcessor nextProcessor) {
this.nextProcessor = nextProcessor;
}
/**
* @see ConfigProcessor#invokeNext(org.w3c.dom.Document[])
*/
public void invokeNext(Document[] documents)
throws Exception {
if (nextProcessor != null) {
nextProcessor.process(documents);
}
}
// ------------------------------------------------------- Protected Methods
/**
* @return return the Application instance for this context.
*/
protected Application getApplication() {
ApplicationFactory afactory = (ApplicationFactory)
FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
return afactory.getApplication();
}
/**
* <p>Return the text of the specified <code>Node</code>,
* if any.
* @param node the <code>Node</code>
* @return the text of the <code>Node</code> If the length
* of the text is zero, this method will return <code>null</code>
*/
protected String getNodeText(Node node) {
String res = null;
if (node != null) {
res = node.getTextContent();
if (res != null) {
res = res.trim();
}
}
return ((res != null && res.length() != 0) ? res : null);
}
/**
* @return a <code>Map</code> of of textual values keyed off the values
* of any lang or xml:lang attributes specified on an attribute. If no
* such attribute exists, then the key {@link ApplicationResourceBundle#DEFAULT_KEY}
* will be used (i.e. this represents the default Locale).
* @param list a list of nodes representing textual elements such as
* description or display-name
*/
protected Map<String, String> getTextMap(List<Node> list) {
if (list != null && !list.isEmpty()) {
int len = list.size();
HashMap<String, String> names =
new HashMap<String, String>(len, 1.0f);
for (int i = 0; i < len; i++) {
Node node = list.get(i);
String textValue = getNodeText(node);
if (textValue != null) {
if (node.hasAttributes()) {
NamedNodeMap attributes = node
.getAttributes();
String lang
= getNodeText(attributes.getNamedItem(
"lang"));
if (lang == null) {
lang =
getNodeText(attributes.getNamedItem(
"xml:lang"));
}
if (lang != null) {
names.put(lang, textValue);
} else {
names.put(ApplicationResourceBundle.DEFAULT_KEY,
textValue);
}
} else {
names.put(ApplicationResourceBundle.DEFAULT_KEY,
textValue);
}
}
}
return names;
}
return null;
}
protected Class<?> findRootType(String source,
Node sourceNode,
Class<?>[] ctorArguments) {
try {
Class<?> sourceClass = loadClass(source, this, null);
for (Class<?> ctorArg : ctorArguments) {
if (ReflectionUtils.lookupConstructor(sourceClass, ctorArg) != null) {
return ctorArg;
}
}
} catch (ClassNotFoundException cnfe) {
throw new ConfigurationException(
buildMessage(MessageFormat.format("Unable to find class ''{0}''",
source), sourceNode),
cnfe);
}
return null;
}
protected Object createInstance(String className, Node source) {
return createInstance(className, null, null, source);
}
protected Object createInstance(String className,
Class rootType,
Object root,
Node source) {
Class clazz;
Object returnObject = null;
if (className != null) {
try {
clazz = loadClass(className, returnObject, null);
if (clazz != null) {
if (isDevModeEnabled()) {
Class<?>[] interfaces = clazz.getInterfaces();
if (interfaces != null) {
for (Class<?> c : interfaces) {
if ("groovy.lang.GroovyObject"
.equals(c.getName())) {
// all groovy classes will implement this interface
returnObject =
createScriptProxy(rootType, className, root);
break;
}
}
}
}
if (returnObject == null) {
// Look for an adapter constructor if we've got
// an object to adapt
if ((rootType != null) && (root != null)) {
Constructor construct =
ReflectionUtils.lookupConstructor(
clazz,
rootType);
if (construct != null) {
returnObject = construct.newInstance(root);
}
}
}
if (clazz != null && returnObject == null) {
returnObject = clazz.newInstance();
}
}
} catch (ClassNotFoundException cnfe) {
throw new ConfigurationException(
buildMessage(MessageFormat.format("Unable to find class ''{0}''",
className),
source),
cnfe);
} catch (NoClassDefFoundError ncdfe) {
throw new ConfigurationException(
buildMessage(MessageFormat.format("Class ''{0}'' is missing a runtime dependency: {1}",
className,
ncdfe.toString()),
source),
ncdfe);
} catch (ClassCastException cce) {
throw new ConfigurationException(
buildMessage(MessageFormat.format("Class ''{0}'' is not an instance of ''{1}''",
className,
rootType),
source),
cce);
} catch (Exception e) {
throw new ConfigurationException(
buildMessage(MessageFormat.format("Unable to create a new instance of ''{0}'': {1}",
className,
e.toString()),
source), e);
}
}
return returnObject;
}
protected Class<?> loadClass(String className,
Object fallback,
Class<?> expectedType)
throws ClassNotFoundException {
Class<?> clazz = Util.loadClass(className, fallback);
if (expectedType != null && !expectedType.isAssignableFrom(clazz)) {
throw new ClassCastException();
}
return clazz;
}
protected void processAnnotations(Class<? extends Annotation> annotationType) {
FacesContext ctx = FacesContext.getCurrentInstance();
ApplicationAssociate associate =
ApplicationAssociate.getInstance(ctx.getExternalContext());
AnnotationManager manager = associate.getAnnotationManager();
manager.applyConfigAnntations(ctx,
annotationType,
ConfigManager.getAnnotatedClasses(ctx).get(annotationType));
}
// --------------------------------------------------------- Private Methods
private String buildMessage(String cause, Node source) {
return MessageFormat.format("\n Source Document: {0}\n Cause: {1}",
source.getOwnerDocument().getDocumentURI(),
cause);
}
private Object createScriptProxy(Class<?> artifactType,
String scriptName,
Object root) {
if (Renderer.class.equals(artifactType)) {
return new RendererProxy(scriptName);
} else if (PhaseListener.class.equals(artifactType)) {
return new PhaseListenerProxy(scriptName);
} else if (ViewHandler.class.equals(artifactType)) {
return new ViewHandlerProxy(scriptName, (ViewHandler) root);
} else if (NavigationHandler.class.equals(artifactType)) {
return new NavigationHandlerProxy(scriptName, (NavigationHandler) root);
} else if (ActionListener.class.equals(artifactType)) {
return new ActionListenerProxy(scriptName, (ActionListener) root);
} else if (ELResolver.class.equals(artifactType)) {
return new ELResolverProxy(scriptName);
} else {
return null;
}
}
private boolean isDevModeEnabled() {
WebConfiguration webconfig = WebConfiguration.getInstance();
return (webconfig != null
&& "Development".equals(webconfig.getOptionValue(WebContextInitParameter.JavaxFacesProjectStage)));
}
}