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Posted to commits@myfaces.apache.org by sl...@apache.org on 2008/11/13 00:34:07 UTC

svn commit: r713565 - /myfaces/core/branches/2_0_0/api/src/main/java/javax/faces/application/Application.java

Author: slessard
Date: Wed Nov 12 15:34:07 2008
New Revision: 713565

URL: http://svn.apache.org/viewvc?rev=713565&view=rev
Log:
MYFACES-2010 - Comment Application class

Modified:
    myfaces/core/branches/2_0_0/api/src/main/java/javax/faces/application/Application.java

Modified: myfaces/core/branches/2_0_0/api/src/main/java/javax/faces/application/Application.java
URL: http://svn.apache.org/viewvc/myfaces/core/branches/2_0_0/api/src/main/java/javax/faces/application/Application.java?rev=713565&r1=713564&r2=713565&view=diff
==============================================================================
--- myfaces/core/branches/2_0_0/api/src/main/java/javax/faces/application/Application.java (original)
+++ myfaces/core/branches/2_0_0/api/src/main/java/javax/faces/application/Application.java Wed Nov 12 15:34:07 2008
@@ -44,6 +44,14 @@
 import javax.faces.webapp.pdl.PageDeclarationLanguage;
 
 /**
+ * <p>Application  represents a per-web-application singleton object where applications based on JavaServer Faces 
+ * (or implementations wishing to provide extended functionality) can register application-wide singletons that 
+ * provide functionality required by JavaServer Faces. Default implementations of each object are provided for 
+ * cases where the application does not choose to customize the behavior.</p>
+ * 
+ * <p>The instance of {@link Application} is created by calling the <code>getApplication()</code> method of 
+ * {@link ApplicationFactory}. Because this instance is shared, it must be implemented in a thread-safe manner.</p>
+ * 
  * Holds webapp-wide resources for a JSF application. There is a single one of these for a web application, accessable
  * via
  * 
@@ -60,6 +68,7 @@
  * @author Stan Silvert
  * @version $Revision$ $Date$
  */
+
 @SuppressWarnings("deprecation")
 public abstract class Application
 {
@@ -76,30 +85,112 @@
      * It is permitted to override a previously defined mapping, ie to call this method multiple times with the same
      * componentType string. The createComponent method will simply use the last defined mapping.
      */
-    public abstract void addComponent(String componentType, String componentClass);
-
+	
+	/**
+	 * Register a new mapping of component type to the name of the corresponding {@link UIComponent} class.
+	 * This allows subsequent calls to <code>createComponent()</code> to serve as a factory for 
+	 * {@link UIComponent} instances.
+	 * 
+	 * @param componentType - The component type to be registered
+	 * @param componentClass - The fully qualified class name of the corresponding {@link UIComponent} 
+	 *                       implementation 
+	 * 
+	 * @throws NullPointerException if <code>componentType</code> or <code>componentClass</code> is 
+	 *                              <code>null</code>
+	 */
+	public abstract void addComponent(String componentType, String componentClass);
+	
+	/**
+	 *  Register a new converter class that is capable of performing conversions for the specified target class.
+	 *  
+	 *  @param targetClass - The class for which this converter is registered
+	 *  @param converterClass - The fully qualified class name of the corresponding {@link Converter} implementation 
+	 *  
+	 *  @throws NullPointerException - if <code>targetClass</code>  or <code>converterClass</code> is <code>null</code>
+	 */
     public abstract void addConverter(Class targetClass, String converterClass);
-
+    
+    /**
+     * Register a new mapping of converter id to the name of the corresponding {@link Converter}  class. This allows 
+     * subsequent calls to createConverter() to serve as a factory for {@link Converter} instances.
+     * 
+     * @param componentType - The component type to be registered
+     * @param componentClass - The fully qualified class name of the corresponding {@link UIComponent}
+     *                         implementation 
+     *                         
+     * @throws NullPointerException - if <code>componentType</code> or <code>componentClass</code> is <code>null</code>
+     */
     public abstract void addConverter(String converterId, String converterClass);
 
+    /**
+     * <p>Provide a way for Faces applications to register an <code>ELContextListener</code> that will be notified 
+     * on creation of <code>ELContext</code> instances.<p>
+     * 
+     * <p>An implementation is provided that throws <code>UnsupportedOperationException</code> so that users that
+     * decorate the <code>Application</code> continue to work.</p>
+     * 
+     * @since 1.2
+     */
     public void addELContextListener(ELContextListener listener)
     {
         throw new UnsupportedOperationException();
     }
-
+    
+    /**
+     * <p>Cause an the argument <code>resolver</code> to be added to the resolver chain as specified in section 5.5.1
+     * of the JavaServer Faces Specification.</p>
+     * 
+     * <p>It is not possible to remove an <code>ELResolver</code> registered with this method, 
+     * once it has been registered.</p>
+     * 
+     * <p>It is illegal to register an ELResolver after the application has received any requests from the client. 
+     * If an attempt is made to register a listener after that time, an IllegalStateException must be thrown. 
+     * This restriction is in place to allow the JSP container to optimize for the common case where no additional 
+     * <code>ELResolvers</code> are in the chain, aside from the standard ones. It is permissible to add 
+     * <code>ELResolvers</code> before or after initialization to a CompositeELResolver that is already in the chain.
+     * <p>
+     * 
+     * <p>The default implementation throws <code>UnsupportedOperationException</code> and is provided for the sole 
+     * purpose of not breaking existing applications that extend {@link Application}.</p>
+     * 
+     * @since 1.2
+     */
     public void addELResolver(ELResolver resolver)
     {
         throw new UnsupportedOperationException();
     }
-
+   
+    /**
+     *Register a new mapping of validator id to the name of the corresponding <code>Validator</code> class. This allows 
+     *subsequent calls to <code>createValidator()</code> to serve as a factory for <code>Validator</code> instances.
+     *
+     *@param <code>validatorId</code> - The validator id to be registered
+     *@param <code>validatorClass</code> - The fully qualified class name of the corresponding Validator implementation 
+     *
+     *@throws <code>NullPointerException</code> - if <code>validatorId</code>  or <code>validatorClass</code> 
+     *                                              is <code>null</code>
+     */
     public abstract void addValidator(String validatorId, String validatorClass);
 
+    /**???
+     *     
+     * @param context
+     * @param componentResource
+     * @return
+     */
     public UIComponent createComponent(FacesContext context, Resource componentResource)
     {
         // TODO: JSF 2.0 #43
         throw new UnsupportedOperationException();
     }
-
+    
+    /**
+     * 
+     * @param context
+     * @param componentType
+     * @param rendererType
+     * @return
+     */
     public UIComponent createComponent(FacesContext context, String componentType, String rendererType)
     {
         // TODO: JSF 2.0 #1
@@ -107,24 +198,23 @@
     }
 
     /**
-     * Create a new UIComponent subclass, using the mappings defined by previous calls to the addComponent method of
+     * <p>Create a new UIComponent subclass, using the mappings defined by previous calls to the addComponent method of
      * this class.
-     * <p>
+     * </p>
      * 
-     * @throws FacesException
-     *             if there is no mapping defined for the specified componentType, or if an instance of the specified
-     *             type could not be created for any reason.
+     * @throws FacesException if there is no mapping defined for the specified componentType, or if an instance of the specified
+     *                        type could not be created for any reason.
      */
     public abstract UIComponent createComponent(String componentType) throws FacesException;
 
     /**
-     * Create an object which has an associating "binding" expression tying the component to a user property.
-     * <p>
-     * First the specified value-binding is evaluated; if it returns a non-null value then the component
-     * "already exists" and so the resulting value is simply returned.
-     * <p>
-     * Otherwise a new UIComponent instance is created using the specified componentType, and the new object stored via
-     * the provided value-binding before being returned.
+     * <p>Create an object which has an associating "binding" expression tying the component to a user property.</p>
+     * 
+     * <p>First the specified value-binding is evaluated; if it returns a non-null value then the component
+     * "already exists" and so the resulting value is simply returned.</p>
+     * 
+     * <p>Otherwise a new UIComponent instance is created using the specified componentType, and the new object stored via
+     * the provided value-binding before being returned.</p>
      * 
      * @deprecated
      */
@@ -132,20 +222,79 @@
     public abstract UIComponent createComponent(ValueBinding componentBinding, FacesContext context,
                                                 String componentType) throws FacesException;
 
-    public UIComponent createComponent(ValueExpression componentExpression, FacesContext facesContext,
+    /**
+     * <p>Call the <code>getValue()</code> method on the specified <code>ValueExpression</code>. If it returns 
+     * a <code>{@link UIComponent}</code> instance, return it as the value of this method. If it does not, 
+     * instantiate a new <code>{@linkUIComponent}</code> instance of the specified component type, pass the new
+     * component to the <code>setValue()</code> method of the specified <code>ValueExpression</code>, and return it.</p>
+     * 
+     * @param componentExpression - <code>ValueExpression</code> representing a component value expression 
+     *                              (typically specified by the <code>component</code> attribute of a custom tag)
+     * @param contexte - {@link FacesContext} for the current request
+     * @param componentType - Component type to create if the ValueExpression does not return a component instance 
+     * 
+     * @throws <code>{@link FacesException}</code> - if a <code>{@link UIComponent}</code> cannot be created 
+     * @throws <code>{@link NullPointerException}</code>- if any parameter is null
+     *         <p>A default implementation is provided that throws <code>UnsupportedOperationException</code> so that users 
+     *         that decorate <code>Application</code> can continue to function</p>
+     *                  
+     * @since 1.2
+     */
+    public UIComponent createComponent(ValueExpression componentExpression, FacesContext contexte,
                                        String componentType) throws FacesException, NullPointerException
     {
         throw new UnsupportedOperationException();
     }
-
+    
+    /**
+     * 
+     * @param componentExpression
+     * @param context
+     * @param componentType
+     * @param rendererType
+     * @return
+     */
     public UIComponent createComponent(ValueExpression componentExpression, FacesContext context, String componentType,
                                        String rendererType)
     {
         throw new UnsupportedOperationException();
     }
+    
+    /**
+     * <p>Instantiate and return a new <code>{@link Converter}</code> instance of the class that has registered itself 
+     * as capable of performing conversions for objects of the specified type. If no such <code>{@link Converter}</code>
+     * class can be identified, return null.</p>
+     * 
+     * <p>To locate an appropriate <code>{@link Converter}</code> class, the following algorithm is performed, 
+     * stopping as soon as an appropriate <code>{@link Converter}</code> class is found:
+     * Locate a <code>{@link Converter}</code> registered for the target class itself.
+     * <Locate a <code>{@link Converter}</code> registered for interfaces that are implemented by the target class 
+     * (directly or indirectly).
+     * Locate a <code>{@link Converter}</code> registered for the superclass (if any) of the target class, 
+     * recursively working up the inheritance hierarchy.</p>
+     * 
+     * <p>If the <code>{@link Converter}</code> has a single argument constructor that accepts a Class, 
+     * instantiate the <code>{@link Converter}</code>  using that constructor, passing the argument 
+     * <code>{@link targetClass}</code> as the sole argument. Otherwise, simply use the zero-argument constructor. 
 
+     * @param targetClass - Target class for which to return a <code>{@link Converter}</code>
+     * 
+     * @throws FacesException if the <code>{@link Converter}</code> cannot be created 
+     * @throws NullPointerException if <code>targetClass</code> is <code>null</code>
+     *
+     */
     public abstract Converter createConverter(Class targetClass);
-
+	
+    /**
+     * Instantiate and return a new <code>{@link Converter}</code> instance of the class specified by a 
+     * previous call to <code>addConverter()</code> for the specified converter id. If there is no such 
+     * registration for this converter id, return <code>null</code>.
+     * 
+     * @param converterId- The converter id for which to create and return a new <code>{@link Converter}</code> instance 
+     * 
+     * @throws FacesException if the <code>{@link Converter}</code> cannot be created 
+     * @throws NullPointerException if converterId is <code>null</code>
+     */
     public abstract Converter createConverter(String converterId);
 
     /**
@@ -160,57 +309,183 @@
     @Deprecated
     public abstract MethodBinding createMethodBinding(String ref, Class[] params) throws ReferenceSyntaxException;
 
+    /**
+     * Instantiate and return a new <code>{@link Validator}</code>  instance of the class specified by a previous 
+     * call to <code>addValidator()</code>  for the specified validator id.
+     * 
+     * @param <code>validatorId</code>- The <code>{@link Validator}</code>  id for which to create and return a new Validator instance 
+     * 
+     * @throws FacesException if a <code>{@link Validator}/<code> of the specified id cannot be created 
+     * @throws NullPointerException if validatorId  is <code>null</code>
+     */
     public abstract Validator createValidator(String validatorId) throws FacesException;
 
     /**
-     * Create an object which can be used to invoke an arbitrary method via an EL expression at a later time. This is
+     * <p>Create an object which can be used to invoke an arbitrary method via an EL expression at a later time. This is
      * similar to createValueBinding except that it can invoke an arbitrary method (with parameters) rather than just
      * get/set a javabean property.
-     * <p>
+     * </p>
      * This is used to invoke ActionListener method, and ValueChangeListener methods.
      * 
      * @deprecated
      */
     @Deprecated
     public abstract ValueBinding createValueBinding(String ref) throws ReferenceSyntaxException;
-
+	
+    /**
+     * <p>Get a value by evaluating an expression.</p>
+     * 
+     * <p>Call <code>{@link getExpressionFactory()}</code> then call
+     * <code>ExpressionFactory.createValueExpression(javax.el.ELContext, java.lang.String, java.lang.Class)</code>
+     * passing the argument <code>expression</code> and <code>expectedType</code>. Call 
+     * <code>{@link FacesContext#getELContext()}</code> and pass it to 
+     * <code>ValueExpression.getValue(javax.el.ELContext)</code>, returning the result.</p>
+     * 
+     * <p>An implementation is provided that throws <code>UnsupportedOperationException</code> so that users that 
+     * decorate the <code>Application</code> continue to work.<p>
+     * 
+     * @throws javax.el.ELException
+     */
     public Object evaluateExpressionGet(FacesContext context, String expression, Class expectedType) throws ELException
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * <p>Return the default <code>ActionListener</code> to be registered for all <code>ActionSource<3code> components 
+     * in this appication. If not explicitly set, a default implementation must be provided that performs the 
+     * following functions:</p>
+     * <ul><li>The <code>processAction()</code> method must first call <code>FacesContext.renderResponse()</code>in order 
+     * to bypass any intervening lifecycle phases, once the method returns.</li>
+     *      
+     *     <li>The <code>processAction()</code> method must next determine the logical outcome of this event, as follows:</li>
+     * 
+     *     <ul><li>If the originating component has a non-<code>null action</code> property, retrieve the <code>
+     *             MethodBinding<code> from the property, and call <code>invoke()</code> on it. Convert the returned 
+     *              value (if any) to a String, and use it as the logical outcome.</li>
+     *         <li>Otherwise, the logical outcome is null.</li>
+     *     </ul>
+     * </ul>
+     * <ul><li>The <code>processAction()</code> method must finally retrieve the <code>NavigationHandler<3code> instance 
+     *         for this application and call <code>NavigationHandler.handleNavigation(javax.faces.context.FacesContext, 
+     *                                     java.lang.String, java.lang.String)</code> passing:</li>
+     *     <ul><li>the {@link FacesContext} for the current request</li>
+     *         <li>If there is a <code>MethodBinding</code> instance for the <code>action</code> property of this component, 
+     *             the result of calling {@link MethodBinding.getExpressionString()} on it, null otherwise</li>
+     *         <li>the logical outcome as determined above</li>
+     *      <ul>
+     * </ul>
+     * <p>Note that the specification for the default <code>ActionListener</code> contiues to call for the use of a 
+     * deprecated property (<code>action</code>) and class (<code>MethodBinding</code>). Unfortunately, this is 
+     * necessary because the default ActionListener must continue to work with components that do not implement 
+     * {@link ActionSource2}, and only implement {@link ActionSource}.
+     */
     public abstract ActionListener getActionListener();
-
+    
+    /**
+     * Return an <code>Iterator</code> over the set of currently defined component types for 
+     * this <code>Application</code>.
+     */
     public abstract Iterator<String> getComponentTypes();
-
+    
+    /**
+     * Return an <code>Iterator</code> over the set of currently registered converter ids for 
+     * this <code>Application</code>
+     * @return
+     */
     public abstract Iterator<String> getConverterIds();
-
+    
+    /**
+     *Return an <code>Iterator</code> over the set of <code>Class</code>  instances for which <code>{@link Converter}</code> 
+     *<code>classes</code>have been explicitly registered.
+     * @return
+     */
     public abstract Iterator<Class> getConverterTypes();
-
+    
+    /**
+     *Return the default <code>Locale</code> for this application. If not explicitly set, <code>null</code> is returned.
+     * @return
+     */
     public abstract Locale getDefaultLocale();
-
+    
+    /**
+     * Return the <code>renderKitId</code> to be used for rendering this application. If not explicitly set, 
+     * <code>null</code> is returned.
+     * @return
+     */
     public abstract String getDefaultRenderKitId();
-
+    
+    /**
+     * <p>If no calls have been made to <code>addELContextListener(javax.el.ELContextListener)</code>, this method 
+     * must return an empty array<p>. 
+     * 
+     * <p>Otherwise, return an array representing the list of listeners added by calls to 
+     * <code>addELContextListener(javax.el.ELContextListener)</code>.<p>
+     * 
+     * <p>An <code>implementation</code> is provided that throws UnsupportedOperationException so that users that 
+     * decorate the <code>Application</code> continue to work.</p>
+     * 
+     * @since 1.2
+     */
     public ELContextListener[] getELContextListeners()
     {
         throw new UnsupportedOperationException();
     }
-
+	
+    /**
+     * <ul>Return the singleton <code>ELResolver</code> instance to be used for all EL resolution. This is actually 
+     * an instance of <code>CompositeELResolver</code> that must contain the following ELResolver instances in 
+     * the following order:
+     *   <li><code>ELResolver</code> instances declared using the <el-resolver> element in the application 
+     *   configuration resources.</li>
+     *   
+     *   <li>An <code> implementation</code>  that wraps the head of the legacy VariableResolver chain, 
+     *   as per section <code> VariableResolver ChainWrapper</code> in Chapter 5 in the spec document.</li>
+     *   
+     *   <li>An <code>implementation</code> that wraps the head of the legacy PropertyResolver chain, 
+     *   as per section <code>PropertyResolver ChainWrapper</code> in Chapter 5 in the spec document.</li>
+     *   
+     *   <li>Any <code>ELResolver</code> instances added by calls to 
+     *   <code>{@link #addELResolver(javax.el.ELResolver)}</code>.</li>
+     *   
+     *   <li> The default implementation throws <code>UnsupportedOperationException</code>  and is provided 
+     *   for the sole purpose of not breaking existing applications that extend <code>{@link Application}</code>.</li>
+     * <ul>
+     *   
+     * @since 1.2
+     */
     public ELResolver getELResolver()
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * <p>Return the <code>ExpressionFactory</code> instance for this application. This instance is used by the 
+     * convenience method <code>{@link #evaluateExpressionGet(javax.faces.context.FacesContext, java.lang.String, java.lang.Class)}.</p>
+     * 
+     * <p>The implementation must return the <code>ExpressionFactory</code> from the JSP container by calling 
+     * <code>JspFactory.getDefaultFactory().getJspApplicationContext(servletContext).getExpressionFactory()</code>.</p>
+     * 
+     * <p>An implementation is provided that throws <code>UnsupportedOperationException</code> so that users that
+     *  decorate the <code>Application</code> continue to work.</p> 
+     *  
+     * @since 1.2
+     */
     public ExpressionFactory getExpressionFactory()
     {
         throw new UnsupportedOperationException();
     }
-
+	
+    /**
+     * Return the fully qualified class name of the <code>ResourceBundle</code> to be used for JavaServer Faces 
+     * messages for this application. If not explicitly set, <code>null</code>  is returned.
+     */
     public abstract String getMessageBundle();
 
     /**
-     * Return the NavigationHandler object which is responsible for mapping from a logical (viewid, fromAction, outcome)
-     * to the URL of a view to be rendered.
+     *Return the <code>{@link NavigationHandler}</code> instance that will be passed the outcome returned by any 
+     *invoked application action for this web application. If not explicitly set, a default implementation must be 
+     *provided that performs the functions described in the <code>{@link NavigationHandler}</code> class description.
      */
     public abstract NavigationHandler getNavigationHandler();
 
@@ -219,6 +494,30 @@
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * <p>Return the project stage for the currently running application instance. The default value is
+     * <code>{@link ProjectStage#Production}</code></p>
+     * 
+     * <p>The implementation of this method must perform the following algorithm or an equivalent with the same 
+     * end result to determine the value to return.</p>
+     * 
+     * <ul>
+     *   <li>If the value has already been determined by a previous call to this method, simply return that value.</li>
+     *   <li>Look for a <code>JNDI</code> environment entry under the key given by the value of 
+     *       <code>{@link ProjectStage#PROJECT_STAGE_JNDI_NAME}</code> (return type of java.lang.String). If found, 
+     *       continue with the algorithm below, otherwise, look for an entry in the <code>initParamMap</code> of the 
+     *       <code>ExternalContext</code> from the current <code>FacesContext</code> with the key 
+     *       <code>{@link ProjectStage#PROJECT_STAGE_PARAM_NAME}</code>
+     *  </li>
+     *  <li>If a value is found found, see if an enum constant can be obtained by calling <code>ProjectStage.valueOf()</code>,
+     *      passing the value from the <code>initParamMap</code>. If this succeeds without exception, save the value and return it.
+     *  </li>
+     *  <li>If not found, or any of the previous attempts to discover the enum constant value have failed, log a 
+     *      descriptive error message, assign the value as <code>ProjectStage.Production</code> and return it.</li>
+     * <ul>
+     * 
+     * @since 2.0
+     */
     public ProjectStage getProjectStage()
     {
         throw new UnsupportedOperationException();
@@ -234,20 +533,60 @@
     @Deprecated
     public abstract PropertyResolver getPropertyResolver();
 
+    /**
+     * <p>Find a <code>ResourceBundle</code> as defined in the application configuration resources under the specified
+     * name. If a <code>ResourceBundle</code> was defined for the name, return an instance that uses the locale of the
+     * current <code>{@link UIViewRoot}</code>.</p>
+     * 
+     * <p>The default implementation throws <code>UnsupportedOperationException</code> and is provided for the sole 
+     * purpose of not breaking existing applications that extend this class.</p>
+     * 
+     * @return <code>ResourceBundle</code> for the current UIViewRoot, otherwise null 
+     * 
+     * @throws <code>{@link FacesException}</code> - if a bundle was defined, but not resolvable 
+     * @throws <code>{@link NullPointerException}</code> - if ctx == null || name == null
+     */
     public ResourceBundle getResourceBundle(FacesContext ctx, String name) throws FacesException, NullPointerException
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * <p>Return the singleton, stateless, thread-safe <code>{@link ResourceHandler}</code> for this application. 
+     * The JSF implementation must support the following techniques for declaring an alternate implementation of 
+     * <code>ResourceHandler</code>.</p>
+     * 
+     * <ul><li>The <code>ResourceHandler</code> implementation is declared in the application configuration resources 
+     *         by giving the fully qualified class name as the value of the <code><resource-handler></code> element 
+     *         within the <code>application</code> element.
+     *     </li>
+     *     <li>RELEASE_PENDING(edburns) It can also be declared via an annotation as specified in [287-ConfigAnnotations].</li>
+     * </ul>
+     * 
+     * <p>In all of the above cases, the runtime must employ the decorator pattern as for every other pluggable artifact in JSF.</p>
+     * 
+     * @since 2.0
+     */
     public ResourceHandler getResourceHandler()
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * Return the <code>StateManager</code> instance that will be utilized during the Restore View and Render Response  
+     * phases of the request processing lifecycle. If not explicitly set, a default implementation must be provided 
+     * that performs the functions described in the <code>StateManager</code> description in the JavaServer Faces Specification.
+     */
     public abstract StateManager getStateManager();
 
+    /**
+     * Return an <code>Iterator</code> over the supported <code>Locales</code> for this appication.
+     */
     public abstract Iterator<Locale> getSupportedLocales();
 
+    /**
+     *Return an <code>Iterator</code> over the set of currently registered validator ids for this <code>Application</code>.
+     */
     public abstract Iterator<String> getValidatorIds();
 
     /**
@@ -258,78 +597,255 @@
     @Deprecated
     public abstract VariableResolver getVariableResolver();
 
+    /**
+     * Set the <code>{@link ViewHandler}</code> instance that will be utilized during the <code> Restore View and Render Response</code> 
+     * phases of the request processing lifecycle.
+     * @return
+     */
     public abstract ViewHandler getViewHandler();
 
+   /**
+    * 
+    * @param systemEventClass
+    * @param sourceBaseType
+    * @param source
+    */
     public void publishEvent(Class<? extends SystemEvent> systemEventClass, Class<?> sourceBaseType, Object source)
     {
         throw new UnsupportedOperationException();
     }
-
+    
+    /**
+     * <p>If there are one or more listeners for events of the type represented by <code>systemEventClass</code>, call those 
+     * listeners,passing source as the <code>source</code> of the event. The implementation should be as fast as possible in 
+     * determining whether or not a listener for the given <code>systemEventClass</code> and <code>source</code> has been installed,
+     * and should return immediately once such a determination has been made. The implementation of <code>publishEvent</code> must 
+     * honor the requirements stated in <code>{@link subscribeToEvent(java.lang.Class, java.lang.Class,
+     *                                               javax.faces.event.SystemEventListener)}</code>
+     * <p>
+     * <p>The default implementation must implement an algorithm semantically equivalent to the following to locate listener 
+     * instances and to invoke them.<p>
+     * <ul><li>If the <code>source</code> argument implements <code>{@link SystemEventListenerHolder}</code>, call 
+     *         <code>{@link SystemEventListenerHolder.getListenersForEventClass(java.lang.Class)}</code> on it, 
+     *         passing the <code>systemEventClass</code> argument. If the list is not empty, perform algorithm 
+     *         <code>traverseListenerList</code> on the list.</li>
+     *         
+     *     <li>If any <code>Application</code> level listeners have been installed by previous calls to 
+     *         </code>{@link subscribeToEvent(java.lang.Class, java.lang.Class, SystemEventListener)}</code>,
+     *         perform algorithm <code>traverseListenerList</code> on the list.</li>
+     *     
+     *     <li>If any <code>Application</code> level listeners have been installed by previous calls to 
+     *         <code>{@link subscribeToEvent(java.lang.Class, SystemEventListener)}</code>, perform algorithm
+     *         <code>traverseListenerList</code> on the list.</li>
+     * </ul>
+     *         
+     * <p>If the act of invoking the <code>processListener</code> method causes an </code>{@link AbortProcessingException}</code>
+     * to be thrown, processing of the listeners must be aborted.</p>
+     * 
+     * <p>Algorithm <code>traverseListenerList</code>: For each listener in the list,<p>
+     * 
+     * <ul><li>Call <code>{@link SystemEventListener.isListenerForSource(java.lang.Object)}<code>, passing the <code>source</code> 
+     *         argument. If this returns <code>false</code>, take no action on the listener.</li>
+     *        
+     *     <li>Otherwise, if the event to be passed to the listener instances has not yet been constructed, construct the event, 
+     *         passing <code>source</code> as the argument to the one-argument constructor that takes an <code>Object</code>. 
+     *         This same event instance must be passed to all listener instances.</li>
+     *         
+     *     <li>Call <code>{@link SystemEvent.isAppropriateListener(javax.faces.event.FacesListener)}<code>, passing the listener 
+     *         instance as the argument. If this returns <code>false</code>, take no action on the listener.</li>
+     *     
+     *     <li>Call <code>{@link SystemEvent.processListener(javax.faces.event.FacesListener)}</code>, passing the listener 
+     *         instance.</li>
+     * 
+     * @param <code>{@link systemEventClass}</code> - The Class of event that is being published. Must be non-null.
+     * 
+     * @param <code>{@link source}</code> - The <code>source</code> for the event of type systemEventClass. Must be non-<code>null</code>, 
+     *                                      and must implement <code>{@link SystemEventListenerHolder}</code>.
+     */
     public void publishEvent(Class<? extends SystemEvent> systemEventClass, Object source)
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * <p>Remove the argument <code>listener</code> from the list of <code>ELContextListeners</code>. If <code>listener</code> is null, no 
+     * exception is thrown and no action is performed. If <code>listener</code> is not in the list, no exception is thrown and no 
+     * action is performed.<p>
+     * 
+     * <p>An implementation is provided that throws <code>UnsupportedOperationException</code> so that users that decorate the 
+     * <code>Application</code> continue to work. 
+     * @param listener
+     */
     public void removeELContextListener(ELContextListener listener)
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * Set the default <code>{@link ActionListener}</code> to be registered for all <code>{@link ActionSource}</code>
+     * components.
+     * 
+     * @param listener - The new default <code>{@link ActionListener}</code>
+     * 
+     * @throws NullPointerException if listener  is null
+     */
     public abstract void setActionListener(ActionListener listener);
 
+    /**
+     * Set the default <code>Locale</code> for this application.
+     * 
+     * @param locale - The new default <code>Locale</code> 
+     * 
+     * @throws NullPointerException if listener  is null
+     */
     public abstract void setDefaultLocale(Locale locale);
 
+    /**
+     * Return the <code>renderKitId</code> to be used for rendering this application. 
+     * If not explicitly set, <code>null</code> is returned.
+     * 
+     * @param renderKitId
+     */
     public abstract void setDefaultRenderKitId(String renderKitId);
 
+    /**
+     * Set the fully qualified class name of the <code>ResourceBundle </code>  to be used for JavaServer Faces 
+     * messages for this application. See the JavaDocs for the  <code>java.util.ResourceBundle </code> class 
+     * for more information about the syntax for resource bundle names.
+     * 
+     * @param bundle - Base name of the resource bundle to be used 
+     * 
+     * @throws NullPointerException if bundle  is null
+     */
     public abstract void setMessageBundle(String bundle);
 
+    /**
+     * Set the {@link NavigationHandler} instance that will be passed the outcome returned by any invoked 
+     * application action for this web application.
+     * 
+     * @param handler - The new NavigationHandler instance 
+     */
     public abstract void setNavigationHandler(NavigationHandler handler);
     
+    /*
+     * 
+     */
     public void setPageDeclarationLanguage(PageDeclarationLanguage pdl)
     {
         throw new UnsupportedOperationException();
     }
 
     /**
+     * The recommended way to affect the execution of the EL is to provide an <el-resolver> element at the right place in the application configuration resources which will be considered 
+     * in the normal course of expression evaluation. This method now will cause the argument resolver to be wrapped inside an implementation of ELResolver and exposed to the EL resolution 
+     * system as if the user had called addELResolver(javax.el.ELResolver).
+     * 
      * @deprecated
      */
     @Deprecated
     public abstract void setPropertyResolver(PropertyResolver resolver);
 
+    /**
+     * 
+     * @param resourceHandler
+     * 
+     * @since 2.0
+     */
     public void setResourceHandler(ResourceHandler resourceHandler)
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     *Set the {@link StateManager} instance that will be utilized during the <code>Restore View and Render 
+     *Response</code> phases of the request processing lifecycle.
+     *
+     * @param <code>manager</code> - The new {@link StateManager}instance 
+     * 
+     * @throws IllegalStateException if this method is called after at least one request has 
+     *                               been processed by the <code>Lifecycle</code> instance for this application.
+     * @throws NullPointerException if manager  is <code>null</code>
+     */
     public abstract void setStateManager(StateManager manager);
 
+    /**
+     * Set the <code>Locale</code> instances representing the supported <code>Locales</code> for this application.
+     * 
+     * @param <code>Locale</code>- The set of supported <code>Locales</code> for this application 
+     * 
+     * @throws NullPointerException if the argument newLocales is <code>null</code>.
+     * 
+     */
     public abstract void setSupportedLocales(Collection<Locale> locales);
 
     /**
+     * The recommended way to affect the execution of the EL is to provide an <el-resolver> element at the right place in the application configuration resources 
+     * which will be considered in the normal course of expression evaluation. This method now will cause the argument resolver to be wrapped inside an implementation 
+     * of ELResolver and exposed to the EL resolution system as if the user had called addELResolver(javax.el.ELResolver).
      * @deprecated
      */
     @Deprecated
     public abstract void setVariableResolver(VariableResolver resolver);
 
+    /**
+     * Set the {@link ViewHandler} instance that will be utilized during the <code>Restore View and Render Response</code>
+     * phases of the request processing lifecycle.
+     * 
+     * @param <code>handler</code> - The new {@link ViewHandler} instance 
+     * 
+     * @throws IllegalStateException if this method is called after at least one request has been processed
+     *                               by the <code>Lifecycle</code> instance for this application. 
+     * @throws NullPointerException if <code>handler</code> is <code>null</code>
+     */
     public abstract void setViewHandler(ViewHandler handler);
 
+    /**
+     * 
+     * @param systemEventClass
+     * @param sourceClass
+     * @param listener
+     * 
+     * @since 2.0
+     */
     public void subscribeToEvent(Class<? extends SystemEvent> systemEventClass, Class sourceClass,
                                  SystemEventListener listener)
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * 
+     * @param systemEventClass
+     * @param listener
+     * 
+     * @since 2.0
+     */
     public void subscribeToEvent(Class<? extends SystemEvent> systemEventClass, SystemEventListener listener)
     {
         subscribeToEvent(systemEventClass, null, listener);
     }
 
+    /**
+     * 
+     * @param systemEventClass
+     * @param sourceClass
+     * @param listener
+     * 
+     * @since 2.0
+     */
     public void unsubscribeFromEvent(Class<? extends SystemEvent> systemEventClass, Class sourceClass,
                                      SystemEventListener listener)
     {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * 
+     * @param systemEventClass
+     * @param listener
+     * 
+     * @since 2.0
+     */
     public void unsubscribeFromEvent(Class<? extends SystemEvent> systemEventClass, SystemEventListener listener)
     {
         unsubscribeFromEvent(systemEventClass, null, listener);