javax.faces.application.Application Maven / Gradle / Ivy
/*
* $Id: Application.java,v 1.59.2.10 2008/04/12 16:32:29 edburns Exp $
*/
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package javax.faces.application;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.behavior.Behavior;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.el.MethodBinding;
import javax.faces.el.PropertyResolver;
import javax.faces.el.ReferenceSyntaxException;
import javax.faces.el.ValueBinding;
import javax.faces.el.VariableResolver;
import javax.faces.event.ActionListener;
import javax.el.ELContextListener;
import javax.el.ExpressionFactory;
import javax.el.ValueExpression;
import javax.el.ELException;
import javax.el.ELResolver;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;
import javax.faces.validator.Validator;
import javax.faces.view.ViewDeclarationLanguage;
/**
* 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.
*
* The instance of {@link Application} is created by calling the
* getApplication() method of {@link ApplicationFactory}.
* Because this instance is shared, it must be implemented in a
* thread-safe manner.
*
* The application also acts as a factory for several types of
* Objects specified in the Faces Configuration file. Please see {@link
* Application#createComponent}, {@link Application#createConverter},
* and {@link Application#createValidator}.
*/
public abstract class Application {
@SuppressWarnings({"UnusedDeclaration"})
private Application defaultApplication;
// ------------------------------------------------------------- Properties
/**
* Return the default {@link ActionListener} to be registered for
* all {@link javax.faces.component.ActionSource} components in this
* appication. If not explicitly set, a default implementation must
* be provided that performs the
*
* following functions:
*
* - The
processAction() method must first call
* FacesContext.renderResponse() in order to bypass
* any intervening lifecycle phases, once the method returns.
* - The
processAction() method must next determine
* the logical outcome of this event, as follows:
*
* - If the originating component has a non-
null
* action property, retrieve the {@link
* MethodBinding} from the property, and call
* invoke() on it. Convert the returned value (if
* any) to a String, and use it as the logical outcome.
* - Otherwise, the logical outcome is
null.
*
* - The
processAction() method must finally retrieve
* the NavigationHandler instance for this
* application and call {@link
* NavigationHandler#handleNavigation} passing:
*
*
* - the {@link FacesContext} for the current request
* - If there is a
MethodBinding instance for the
* action property of this component, the result of
* calling {@link MethodBinding#getExpressionString} on it, null
* otherwise
*
* - the logical outcome as determined above
*
*
*
*
*
*
* Note that the specification for the default
* ActionListener contiues to call for the use of a
* deprecated property (action) and
* class (MethodBinding). Unfortunately, this is
* necessary because the default ActionListener must
* continue to work with components that do not implement {@link
* javax.faces.component.ActionSource2}, and only implement {@link
* javax.faces.component.ActionSource}.
*/
public abstract ActionListener getActionListener();
/**
* Set the default {@link ActionListener} to be registered for all
* {@link javax.faces.component.ActionSource} components.
*
*
* @param listener The new default {@link ActionListener}
*
* @throws NullPointerException if listener
* is null
*/
public abstract void setActionListener(ActionListener listener);
/**
* Return the default Locale for this application. If
* not explicitly set, null is returned.
*/
public abstract Locale getDefaultLocale();
/**
* Set the default Locale for this application.
*
* @param locale The new default Locale
*
* @throws NullPointerException if locale
* is null
*/
public abstract void setDefaultLocale(Locale locale);
/**
* Return the renderKitId to be used for rendering
* this application. If not explicitly set, null is
* returned.
*/
public abstract String getDefaultRenderKitId();
/**
* Set the renderKitId to be used to render this
* application. Unless the client has provided a custom {@link ViewHandler}
* that supports the use of multiple {@link javax.faces.render.RenderKit}
* instances in the same application, this method must only be called at
* application startup, before any Faces requests have been processed.
* This is a limitation of the current Specification, and may be lifted in
* a future release.
*/
public abstract void setDefaultRenderKitId(String renderKitId);
/**
* Return the fully qualified class name of the
* ResourceBundle to be used for JavaServer Faces messages
* for this application. If not explicitly set, null
* is returned.
*/
public abstract String getMessageBundle();
/**
* Set the fully qualified class name of the ResourceBundle
* to be used for JavaServer Faces messages for this application. See the
* JavaDocs for the java.util.ResourceBundle 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);
/**
* Return the {@link NavigationHandler} 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
* {@link NavigationHandler} class description.
*/
public abstract NavigationHandler getNavigationHandler();
/**
* 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 {@link NavigationHandler} instance
*
* @throws NullPointerException if handler
* is null
*/
public abstract void setNavigationHandler(NavigationHandler handler);
/**
* Return the singleton, stateless, thread-safe {@link
* ResourceHandler} for this application. The JSF implementation
* must support the following techniques for declaring an alternate
* implementation of ResourceHandler.
*
*
* The ResourceHandler implementation is
* declared in the application configuration resources by giving
* the fully qualified class name as the value of the
* <resource-handler> element within the
* <application> element.
* In all of the above cases, the runtime must employ the
* decorator pattern as for every other pluggable artifact in
* JSF.
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function
.
*
* @since 2.0
*/
public ResourceHandler getResourceHandler() {
if (defaultApplication != null) {
return defaultApplication.getResourceHandler();
}
throw new UnsupportedOperationException();
}
/**
* Set the {@link ResourceHandler} instance that will be utilized
* for rendering the markup for resources, and for satisfying client
* requests to serve up resources.
*
*
* @param resourceHandler The new ResourceHandler instance
*
* @throws IllegalStateException if this method is called after
* at least one request has been processed by the
* Lifecycle instance for this application.
* @throws NullPointerException if resourceHandler
* is null
*
* @since 2.0
*/
public void setResourceHandler(ResourceHandler resourceHandler) {
if (defaultApplication != null) {
defaultApplication.setResourceHandler(resourceHandler);
} else {
throw new UnsupportedOperationException();
}
}
/**
* Return a {@link PropertyResolver} instance that wraps the
* {@link ELResolver} instance that Faces provides to the unified EL
* for the resolution of expressions that appear programmatically in
* an application.
*
* Note that this no longer returns the default
* PropertyResolver since that class is now a no-op
* that aids in allowing custom PropertyResolvers to
* affect the EL resolution process.
*
* @deprecated This has been replaced by {@link #getELResolver}.
*/
public abstract PropertyResolver getPropertyResolver();
/**
* Set the {@link PropertyResolver} instance that will be utilized
* to resolve method and value bindings.
*
* This method is now deprecated but the implementation must
* cause the argument to be set as the head of the legacy
* PropertyResolver chain, replacing any existing value
* that was set from the application configuration resources.
*
* It is illegal to call this method after
* the application has received any requests from the client. If an
* attempt is made to register a listener after that time it must have
* no effect.
*
* @param resolver The new {@link PropertyResolver} instance
*
* @throws NullPointerException if resolver
* is null
*
* @deprecated 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 {@link ELResolver} and
* exposed to the EL resolution system as if the user had called
* {@link #addELResolver}.
*
* @throws IllegalStateException if called after the first
* request to the {@link javax.faces.webapp.FacesServlet} has been
* serviced.
*/
public abstract void setPropertyResolver(PropertyResolver resolver);
/**
* Find a ResourceBundle as defined in the
* application configuration resources under the specified name. If
* a ResourceBundle was defined for the name, return an
* instance that uses the locale of the current {@link
* javax.faces.component.UIViewRoot}.
*
* The default implementation throws
* UnsupportedOperationException and is provided
* for the sole purpose of not breaking existing applications that extend
* this class.
*
* @return ResourceBundle for the current UIViewRoot,
* otherwise null
*
* @throws FacesException if a bundle was defined, but not resolvable
*
* @throws NullPointerException if ctx == null || name == null
*
* @since 1.2
*/
public ResourceBundle getResourceBundle(FacesContext ctx, String name) {
if (defaultApplication != null) {
return defaultApplication.getResourceBundle(ctx, name);
}
throw new UnsupportedOperationException();
}
/**
* Return the project stage
* for the currently running application instance. The default
* value is {@link ProjectStage#Production}
* The implementation of this
* method must perform the following algorithm or an equivalent with
* the same end result to determine the value to return.
*
* If the value has already been determined by a previous call to
* this method, simply return that value.
* Look for a JNDI environment entry under the key
* given by the value of {@link
* ProjectStage#PROJECT_STAGE_JNDI_NAME} (return type of
* java.lang.String). If found, continue with the
* algorithm below, otherwise, look for an entry in the
* initParamMap of the ExternalContext
* from the current FacesContext with the key given by
* the value of {@link ProjectStage#PROJECT_STAGE_PARAM_NAME}
*
*
* If a value is found, see if an enum constant can be
* obtained by calling ProjectStage.valueOf(), passing
* the value from the initParamMap. If this succeeds
* without exception, save the value and return it.
*
* 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 ProjectStage.Production and
* return it.
*
*
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function
.
*
*
* @since 2.0
*/
public ProjectStage getProjectStage() {
if (defaultApplication != null) {
return defaultApplication.getProjectStage();
}
return ProjectStage.Production;
}
/**
* Return the {@link VariableResolver} that wraps the {@link
* ELResolver} instance that Faces provides to the unified EL for
* the resolution of expressions that appear programmatically in an
* application. The implementation of the
* VariableResolvermust pass null as the
* base argument for any methods invoked on the underlying
* ELResolver.
*
* Note that this method no longer returns the default
* VariableResolver, since that class now is a no-op
* that aids in allowing custom VariableResolvers to
* affect the EL resolution process.
*
* @deprecated This has been replaced by {@link #getELResolver}.
*/
public abstract VariableResolver getVariableResolver();
/**
* Set the {@link VariableResolver} instance that will be consulted
* to resolve method and value bindings.
*
* This method is now deprecated but the implementation must
* cause the argument to be set as the head of the legacy
* VariableResolver chain, replacing any existing value
* that was set from the application configuration resources.
*
* It is illegal to call this method after
* the application has received any requests from the client. If an
* attempt is made to register a listener after that time it must have
* no effect.
*
* @param resolver The new {@link VariableResolver} instance
*
* @throws NullPointerException if resolver
* is null
*
* @deprecated 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 {@link ELResolver} and
* exposed to the EL resolution system as if the user had called
* {@link #addELResolver}.
*
* @throws IllegalStateException if called after the first
* request to the {@link javax.faces.webapp.FacesServlet} has been
* serviced.
*/
public abstract void setVariableResolver(VariableResolver resolver);
/**
* Cause an the argument resolver to be added to the
* resolver chain as specified in section JSF.5.5.1 of the JavaServer
* Faces Specification.
*
* It is not possible to remove an ELResolver
* registered with this method, once it has been registered.
*
* 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 ELResolvers are in the
* chain, aside from the standard ones. It is permissible to add
* ELResolvers before or after initialization to a
* CompositeELResolver that is already in the
* chain.
*
* The default implementation throws
* UnsupportedOperationException and is provided
* for the sole purpose of not breaking existing applications that extend
* {@link Application}.
* @throws IllegalStateException if called after the first
* request to the {@link javax.faces.webapp.FacesServlet} has been
* serviced.
* @since 1.2
*/
public void addELResolver(ELResolver resolver) {
if (defaultApplication != null) {
defaultApplication.addELResolver(resolver);
} else {
throw new UnsupportedOperationException();
}
}
/**
* Return the singleton {@link ELResolver} instance to be used
* for all EL resolution. This is actually an instance of {@link
* javax.el.CompositeELResolver} that must contain the following
* ELResolver instances in the following order:
*
*
*
* ELResolver instances declared using the
* <el-resolver> element in the application configuration
* resources.
An implementation that wraps the head of
* the legacy VariableResolver chain, as per section
* VariableResolver ChainWrapper in Chapter JSF.5 in the spec
* document.
An implementation that wraps the head of
* the legacy PropertyResolver chain, as per section
* PropertyResolver ChainWrapper in Chapter JSF.5 in the spec
* document.
Any ELResolver instances added by calls to
* {@link #addELResolver}.
*
* The default implementation throws UnsupportedOperationException
* and is provided for the sole purpose of not breaking existing applications
* that extend {@link Application}.
*
* @since 1.2
*/
public ELResolver getELResolver() {
if (defaultApplication != null) {
return defaultApplication.getELResolver();
}
throw new UnsupportedOperationException();
}
/**
* Return the {@link ViewHandler} 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 {@link ViewHandler} description in the
* JavaServer Faces Specification.
*/
public abstract ViewHandler getViewHandler();
/**
* Set the {@link ViewHandler} instance that will be utilized
* during the Restore View and Render Response
* phases of the request processing lifecycle.
*
* @param handler The new {@link ViewHandler} instance
*
* @throws IllegalStateException if this method is called after
* at least one request has been processed by the
* Lifecycle instance for this application.
* @throws NullPointerException if handler
* is null
*/
public abstract void setViewHandler(ViewHandler handler);
/**
* Return the {@link StateManager} 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 {@link StateManager} description
* in the JavaServer Faces Specification.
*/
public abstract StateManager getStateManager();
/**
* Set the {@link StateManager} instance that will be utilized
* during the Restore View and Render Response
* phases of the request processing lifecycle.
*
* @param manager The new {@link StateManager} instance
*
* @throws IllegalStateException if this method is called after
* at least one request has been processed by the
* Lifecycle instance for this application.
* @throws NullPointerException if manager
* is null
*/
public abstract void setStateManager(StateManager manager);
// ------------------------------------------------------- Object Factories
/**
* Register a new mapping
* of behavior id to the name of the corresponding
* {@link Behavior} class. This allows subsequent calls
* to createBehavior() to serve as a factory for
* {@link Behavior} instances.
*
* @param behaviorId The behavior id to be registered
* @param behaviorClass The fully qualified class name of the
* corresponding {@link Behavior} implementation
*
* @throws NullPointerException if behaviorId
* or behaviorClass is null
*
* @since 2.0
*/
public void addBehavior(String behaviorId,
String behaviorClass) {
if (defaultApplication != null) {
defaultApplication.addBehavior(behaviorId, behaviorClass);
}
}
/**
* Instantiate and
* return a new {@link Behavior} instance of the class specified by
* a previous call to addBehavior() for the specified
* behavior id.
*
* @param behaviorId The behavior id for which to create and
* return a new {@link Behavior} instance
*
* @throws FacesException if the {@link Behavior} cannot be
* created
* @throws NullPointerException if behaviorId
* is null
*/
public Behavior createBehavior(String behaviorId)
throws FacesException {
if (defaultApplication != null) {
return defaultApplication.createBehavior(behaviorId);
}
return null;
}
/**
* Return an Iterator over the set of currently registered
* behavior ids for this Application.
*/
public Iterator getBehaviorIds() {
if (defaultApplication != null) {
return defaultApplication.getBehaviorIds();
}
return Collections.EMPTY_LIST.iterator();
}
/**
* Register a new mapping of component type to the name of the
* corresponding {@link UIComponent} class. This allows subsequent calls
* to createComponent() 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 componentType or
* componentClass is null
*/
public abstract void addComponent(String componentType,
String componentClass);
/**
* Instantiate and
* return a new {@link UIComponent} instance of the class specified
* by a previous call to addComponent() for the
* specified component type.
*
* Before the component instance is
* returned, it must be inspected for the presence of a {@link
* javax.faces.event.ListenerFor} (or {@link
* javax.faces.event.ListenersFor}) or {@link ResourceDependency}
* (or {@link ResourceDependencies}) annotation. If any of these
* annotations are present, the action listed in {@link
* javax.faces.event.ListenerFor} or {@link ResourceDependency} must
* be taken on the component, before it is returned from this
* method. This variant of createComponent must
* not inspect the {@link
* javax.faces.render.Renderer} for the component to be returned for
* any of the afore mentioned annotations. Such inspection is the
* province of {@link #createComponent(ValueExpression,
* FacesContext, String, String)} or {@link
* #createComponent(FacesContext, String, String)}.
* @param componentType The component type for which to create and
* return a new {@link UIComponent} instance
*
* @throws FacesException if a {@link UIComponent} of the
* specified type cannot be created
* @throws NullPointerException if componentType
* is null
*/
public abstract UIComponent createComponent(String componentType)
throws FacesException;
/**
* Wrap the argument componentBinding in an
* implementation of {@link ValueExpression} and call through to
* {@link
* #createComponent(javax.el.ValueExpression,javax.faces.context.FacesContext,java.lang.String)}.
*
* @param componentBinding {@link ValueBinding} representing a
* component value binding expression (typically specified by the
* component attribute of a custom tag)
* @param context {@link FacesContext} for the current request
* @param componentType Component type to create if the {@link ValueBinding}
* does not return a component instance
*
* @throws FacesException if a {@link UIComponent} cannot be created
* @throws NullPointerException if any parameter is null
*
*
* @deprecated This has been replaced by {@link
* #createComponent(javax.el.ValueExpression,javax.faces.context.FacesContext,java.lang.String)}.
*/
public abstract UIComponent createComponent(ValueBinding componentBinding,
FacesContext context,
String componentType)
throws FacesException;
/**
* Call the
* getValue() method on the specified {@link
* ValueExpression}. If it returns a {@link UIComponent} instance,
* return it as the value of this method. If it does not,
* instantiate a new {@link UIComponent} instance of the specified
* component type, pass the new component to the
* setValue() method of the specified {@link
* ValueExpression}, and return it.
*
* Before the component instance is
* returned, it must be inspected for the presence of a {@link
* javax.faces.event.ListenerFor} (or {@link
* javax.faces.event.ListenersFor}) or {@link ResourceDependency}
* (or {@link ResourceDependencies}) annotation. If any of these
* annotations are present, the action listed in {@link
* javax.faces.event.ListenerFor} or {@link ResourceDependency} must
* be taken on the component, before it is returned from this
* method. This variant of createComponent must
* not inspect the {@link
* javax.faces.render.Renderer} for the component to be returned for
* any of the afore mentioned annotations. Such inspection is the
* province of {@link #createComponent(ValueExpression,
* FacesContext, String, String)} or {@link
* #createComponent(FacesContext, String, String)}.
*
* @param componentExpression {@link ValueExpression} representing a
* component value expression (typically specified by the
* component attribute of a custom tag)
* @param context {@link FacesContext} for the current request
* @param componentType Component type to create if the {@link
* ValueExpression} does not return a component instance
*
* @throws FacesException if a {@link UIComponent} cannot be created
* @throws NullPointerException if any parameter is null
*
* A default implementation is provided that throws
* UnsupportedOperationException so that users
* that decorate Application can continue to function.
*
* @since 1.2
*/
public UIComponent createComponent(ValueExpression componentExpression,
FacesContext context,
String componentType)
throws FacesException {
if (defaultApplication != null) {
return defaultApplication.createComponent(componentExpression,
context,
componentType);
}
throw new UnsupportedOperationException();
}
/**
* Like {@link
* #createComponent(ValueExpression, FacesContext, String)} except
* the Renderer for the component to be returned must
* be inspected for the annotations mentioned in {@link
* #createComponent(ValueExpression, FacesContext, String)} as
* specified in the documentation for that method. The
* Renderer instance to inspect must be obtained by
* calling {@link FacesContext#getRenderKit} and calling {@link
* javax.faces.render.RenderKit#getRenderer} on the result, passing
* the argument componentType as the first argument and
* the result of calling {@link UIComponent#getFamily} on the newly
* created component as the second argument. If no such
* Renderer can be found, a message must be logged with
* a helpful error message. Otherwise, {@link
* UIComponent#setRendererType} must be called on the newly created
* UIComponent instance, passing the argument
* rendererType as the argument.
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function.
*
* @param componentExpression {@link ValueExpression} representing a
* component value expression (typically specified by the
* component attribute of a custom tag)
*
* @param context {@link FacesContext} for the current request
*
* @param componentType Component type to create if the {@link
* ValueExpression} does not return a component instance
*
* @param rendererType The renderer-type of the
* Renderer that will render this component. A
* null value must be accepted for this parameter.
*
* @throws FacesException if a {@link UIComponent} cannot be created
* @throws NullPointerException if any of the parameters
* componentExpression, context, or
* componentType are null
*
* @since 2.0
*/
public UIComponent createComponent(ValueExpression componentExpression,
FacesContext context,
String componentType,
String rendererType) {
if (defaultApplication != null) {
return defaultApplication.createComponent(componentExpression,
context,
componentType,
rendererType);
}
throw new UnsupportedOperationException();
}
/**
* Like {@link
* #createComponent(String)} except the Renderer for
* the component to be returned must be inspected for the
* annotations mentioned in {@link #createComponent(ValueExpression,
* FacesContext, String)} as specified in the documentation for that
* method. The Renderer instance to inspect must be
* obtained by calling {@link FacesContext#getRenderKit} and calling
* {@link javax.faces.render.RenderKit#getRenderer} on the result,
* passing the argument componentType as the first
* argument and the result of calling {@link UIComponent#getFamily}
* on the newly created component as the second argument. If no
* such Renderer can be found, a message must be logged
* with a helpful error message. Otherwise, {@link
* UIComponent#setRendererType} must be called on the newly created
* UIComponent instance, passing the argument
* rendererType as the argument.
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function
.
*
* @param context {@link FacesContext} for the current request
*
* @param componentType Component type to create
*
* @param rendererType The renderer-type of the
* Renderer that will render this component. A
* null value must be accepted for this parameter.
*
* @throws FacesException if a {@link UIComponent} cannot be created
*
* @throws NullPointerException if any of the parameters
* context, or componentType are
* null
*
* @since 2.0
*/
public UIComponent createComponent(FacesContext context,
String componentType,
String rendererType) {
if (defaultApplication != null) {
return defaultApplication.createComponent(context,
componentType,
rendererType);
}
throw new UnsupportedOperationException();
}
/**
* Instantiate and return a new {@link
* UIComponent} instance from the argument {@link Resource}. An
* algorithm semantically equivalent to the following must be
* followed to instantiate the UIComponent to
* return.
*
*
*
Obtain a reference to the {@link
ViewDeclarationLanguage} for this Application
instance by calling {@link ViewHandler#getViewDeclarationLanguage},
* passing the viewId found by calling
* {@link javax.faces.component.UIViewRoot#getViewId} on the
* {@link javax.faces.component.UIViewRoot} in the argument
* {@link FacesContext}.
Obtain a reference to the composite component
metadata for this composite component by calling {@link
ViewDeclarationLanguage#getComponentMetadata}, passing the
facesContext and componentResource
arguments to this method. This version of JSF specification
uses JavaBeans as the API to the component metadata.
Determine if the component author declared a
component-type for this component instance by
obtaining the BeanDescriptor from the component
metadata and calling its getValue() method,
passing {@link UIComponent#COMPOSITE_COMPONENT_TYPE_KEY} as
the argument. If non-null, the result must be a
ValueExpression whose value is the
component-type of the UIComponent to
be created for this Resource component. Call
through to {@link #createComponent(java.lang.String)} to
create the component.
Otherwise, determine if a script based component for
this Resource can be found by calling {@link
ViewDeclarationLanguage#getScriptComponentResource}. If the
result is non-null, and is a script written in
one of the languages listed in JSF.4.3 of the specification prose
document, create a UIComponent instance from the
script resource.
Otherwise, let library-name be the return from
calling {@link Resource#getLibraryName} on the argument
componentResource and resource-name be
the return from calling {@link Resource#getResourceName} on
the argument componentResource. Create a fully
qualified Java class name by removing any file extension from
resource-name and let fqcn be
library-name + "." +
resource-name. If a class with the name of
fqcn cannot be found, take no action and continue to
the next step. If any of InstantiationException,
IllegalAccessException, or
ClassCastException are thrown, wrap the exception
in a FacesException and re-throw it. If any
other exception is thrown, log the exception and
continue to the next step.
If none of the previous steps have yielded a
UIComponent instance, call {@link
#createComponent(java.lang.String)} passing
"javax.faces.NamingContainer" as the
argument.
Call {@link UIComponent#setRendererType} on the
UIComponent instance, passing
"javax.faces.Composite" as the argument.
-
Store the argument Resource in the
attributes Map of the UIComponent
under the key, {@link Resource#COMPONENT_RESOURCE_KEY}.
-
Store composite component metadata in the
attributes Map of the UIComponent
under the key, {@link UIComponent#BEANINFO_KEY}.
* Before the component instance is returned, it must be
* inspected for the presence of a {@link
* javax.faces.event.ListenerFor} annotation. If this annotation is
* present, the action listed in {@link
* javax.faces.event.ListenerFor} must be taken on the component,
* before it is returned from this method.
* A default implementation is provided that throws
* UnsupportedOperationException so that users
* that decorate Application can continue to function.
*
*
*
* @param context {@link FacesContext} for the current request
* @param componentResource A {@link Resource} that points to a
* source file that provides an implementation of a component.
*
* @throws FacesException if a {@link UIComponent} from the {@link
* Resource} cannot be created
* @throws NullPointerException if any parameter is
* null
*
* @throws NullPointerException if unable, for any reason, to obtain a
* ViewDeclarationLanguage instance as described above.
*
* @since 2.0
*/
public UIComponent createComponent(FacesContext context,
Resource componentResource) {
if (defaultApplication != null) {
return defaultApplication.createComponent(context,
componentResource);
}
throw new UnsupportedOperationException();
}
/**
* Return an Iterator over the set of currently defined
* component types for this Application.
*/
public abstract Iterator getComponentTypes();
/**
* 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 converterId The converter id to be registered
* @param converterClass The fully qualified class name of the
* corresponding {@link Converter} implementation
*
* @throws NullPointerException if converterId
* or converterClass is null
*/
public abstract void addConverter(String converterId,
String converterClass);
/**
* 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 targetClass
* or converterClass is null
*/
public abstract void addConverter(Class targetClass,
String converterClass);
/**
* Instantiate and
* return a new {@link Converter} instance of the class specified by
* a previous call to addConverter() for the specified
* converter id.
*
* If the toLowerCase() of
* the String represenation of the value of the
* "javax.faces.DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE"
* application configuration parameter is "true"
* (without the quotes) and the Converter instance to
* be returned is an instance of {@link
* javax.faces.convert.DateTimeConverter}, {@link
* javax.faces.convert.DateTimeConverter#setTimeZone} must be
* called, passing the return from
* TimeZone.getDefault().
* The argument
* converter must be inspected for the presence of the
* {@link javax.faces.application.ResourceDependency} annotation.
* If the ResourceDependency annotation is present,
* the action described in ResourceDependency must
* be taken. If the ResourceDependency annotation is
* not present, the argument converter must be inspected
* for the presence of the {@link
* javax.faces.application.ResourceDependencies} annotation.
* If the ResourceDependencies annotation
* is present, the action described in ResourceDependencies
* must be taken.
*
* @param converterId The converter id for which to create and
* return a new {@link Converter} instance
*
* @throws FacesException if the {@link Converter} cannot be
* created
* @throws NullPointerException if converterId
* is null
*/
public abstract Converter createConverter(String converterId);
/**
* Instantiate and return
* a new {@link Converter} instance of the class that has registered
* itself as capable of performing conversions for objects of the
* specified type. If no such {@link Converter} class can be
* identified, return null.
*
* To locate an appropriate {@link Converter} class, the following
* algorithm is performed, stopping as soon as an appropriate {@link
* Converter} class is found:
*
* - Locate a {@link Converter} registered for the target class itself.
*
* - Locate a {@link Converter} registered for interfaces that are
* implemented by the target class (directly or indirectly).
* - Locate a {@link Converter} registered for the superclass (if any)
* of the target class, recursively working up the inheritance
* hierarchy.
*
*
* If the Converter has a single argument constructor that
* accepts a Class, instantiate the Converter
* using that constructor, passing the argument targetClass as
* the sole argument. Otherwise, simply use the zero-argument constructor.
*
*
* If the toLowerCase() of
* the String represenation of the value of the
* "javax.faces.DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE"
* application configuration parameter is "true"
* (without the quotes) and the Converter instance to
* be returned is an instance of {@link
* javax.faces.convert.DateTimeConverter}, {@link
* javax.faces.convert.DateTimeConverter#setTimeZone} must be
* called, passing the return from
* TimeZone.getDefault().
*
* @param targetClass Target class for which to return a {@link Converter}
*
* @throws FacesException if the {@link Converter} cannot be
* created
* @throws NullPointerException if targetClass
* is null
*/
public abstract Converter createConverter(Class targetClass);
/**
* Return an Iterator over the set of currently registered
* converter ids for this Application.
*/
public abstract Iterator getConverterIds();
/**
* Return an Iterator over the set of Class
* instances for which {@link Converter} classes have been explicitly
* registered.
*/
public abstract Iterator> getConverterTypes();
/**
* Register a validator by its id that
* is applied to all UIInput components in a view. The
* validator to most often serve this role is the
* BeanValidator. The usage contract for this method
* assumes that the validator has been registered using the normal
* “by-id” registration mechanism.
*
* An implementation is provided that takes no action
* so that users that decorate
* the Application continue to work.
*
* @since 2.0
*/
public void addDefaultValidatorId(String validatorId) {
if (defaultApplication != null) {
defaultApplication.addDefaultValidatorId(validatorId);
}
}
/**
*
Return an immutable Map over
* the set of currently registered default validator IDs and their class
* name for this Application.
*
* An implementation is provided that returns Collections.emptyMap
* so that users that decorate
* the Application continue to work.
*
* @since 2.0
*/
public Map getDefaultValidatorInfo() {
if (defaultApplication != null) {
return defaultApplication.getDefaultValidatorInfo();
}
return Collections.emptyMap();
}
/**
* Return the {@link ExpressionFactory} instance for this
* application. This instance is used by the convenience method
* {@link #evaluateExpressionGet}.
*
* The implementation must return the
* ExpressionFactory from the JSP container by calling
* JspFactory.getDefaultFactory().getJspApplicationContext(servletContext).getExpressionFactory().
*
* An implementation is provided that throws
* UnsupportedOperationException so that users that decorate
* the Application continue to work.
*
* @since 1.2
*/
public ExpressionFactory getExpressionFactory() {
if (defaultApplication != null) {
return defaultApplication.getExpressionFactory();
}
throw new UnsupportedOperationException();
}
/**
*
Get a value by evaluating an expression.
*
* Call {@link #getExpressionFactory} then call {@link
* ExpressionFactory#createValueExpression} passing the argument
* expression and expectedType. Call
* {@link FacesContext#getELContext} and pass it to {@link
* ValueExpression#getValue}, returning the result.
*
* An implementation is provided that throws
* UnsupportedOperationException so that users that decorate
* the Application continue to work.
*
*/
public T evaluateExpressionGet(FacesContext context,
String expression,
Class expectedType) throws ELException {
if (defaultApplication != null) {
return defaultApplication.evaluateExpressionGet(context,
expression,
expectedType);
}
throw new UnsupportedOperationException();
}
/**
* Call {@link #getExpressionFactory} then call {@link
* ExpressionFactory#createMethodExpression}, passing the given
* arguments, and wrap the result in a MethodBinding
* implementation, returning it.
*
* @param ref Method binding expression for which to return a
* {@link MethodBinding} instance
* @param params Parameter signatures that must be compatible with those
* of the method to be invoked, or a zero-length array or null
* for a method that takes no parameters
*
* @throws NullPointerException if ref
* is null
* @throws ReferenceSyntaxException if the specified ref
* has invalid syntax
*
* @deprecated This has been replaced by calling {@link
* #getExpressionFactory} then {@link
* ExpressionFactory#createMethodExpression}.
*/
public abstract MethodBinding createMethodBinding(String ref,
Class params[])
throws ReferenceSyntaxException;
/**
* Return an Iterator over the supported
* Locales for this appication.
*/
public abstract Iterator getSupportedLocales();
/**
* Set the Locale instances representing the supported
* Locales for this application.
*
* @param locales The set of supported Locales
* for this application
*
* @throws NullPointerException if the argument
* newLocales is null.
*
*/
public abstract void setSupportedLocales(Collection locales);
/**
* Provide a way for Faces applications to register an
* ELContextListener that will be notified on creation
* of ELContext instances. This listener will be
* called once per request.
*
* An implementation is provided that throws
* UnsupportedOperationException so that users that decorate
* the Application continue to work.
*
* @since 1.2
*/
public void addELContextListener(ELContextListener listener) {
if (defaultApplication != null) {
defaultApplication.addELContextListener(listener);
} else {
throw new UnsupportedOperationException();
}
}
/**
*
Remove the argument listener from the list of
* {@link ELContextListener}s. If listener is null, no
* exception is thrown and no action is performed. If
* listener is not in the list, no exception is thrown
* and no action is performed.
*
* An implementation is provided that throws
* UnsupportedOperationException so that users that decorate
* the Application continue to work.
*
* @since 1.2
*/
public void removeELContextListener(ELContextListener listener) {
if (defaultApplication != null) {
defaultApplication.removeELContextListener(listener);
} else {
throw new UnsupportedOperationException();
}
}
/**
*
If no calls have been made to {@link #addELContextListener},
* this method must return an empty array.
*
* Otherwise, return an array representing the list of listeners
* added by calls to {@link #addELContextListener}.
*
* An implementation is provided that throws
* UnsupportedOperationException so that users that decorate
* the Application continue to work.
*
* @since 1.2
*/
public ELContextListener [] getELContextListeners() {
if (defaultApplication != null) {
return defaultApplication.getELContextListeners();
}
throw new UnsupportedOperationException();
}
/**
*
Register a new mapping of validator id to the name of the
* corresponding {@link Validator} class. This allows subsequent calls
* to createValidator() to serve as a factory for
* {@link Validator} instances.
*
* @param validatorId The validator id to be registered
* @param validatorClass The fully qualified class name of the
* corresponding {@link Validator} implementation
*
* @throws NullPointerException if validatorId
* or validatorClass is null
*/
public abstract void addValidator(String validatorId,
String validatorClass);
/**
* Instantiate and
* return a new {@link Validator} instance of the class specified by
* a previous call to addValidator() for the specified
* validator id.
* The argument
* validator must be inspected for the presence of the
* {@link javax.faces.application.ResourceDependency} annotation.
* If the ResourceDependency annotation is present,
* the action described in ResourceDependency must
* be taken. If the ResourceDependency annotation is
* not present, the argument validator must be inspected
* for the presence of the {@link
* javax.faces.application.ResourceDependencies} annotation.
* If the ResourceDependencies annotation
* is present, the action described in ResourceDependencies
* must be taken.
* @param validatorId The validator id for which to create and
* return a new {@link Validator} instance
*
* @throws FacesException if a {@link Validator} of the
* specified id cannot be created
* @throws NullPointerException if validatorId
* is null
*/
public abstract Validator createValidator(String validatorId)
throws FacesException;
/**
* Return an Iterator over the set of currently registered
* validator ids for this Application.
*/
public abstract Iterator getValidatorIds();
/**
* Call {@link #getExpressionFactory} then call {@link
* ExpressionFactory#createValueExpression}, passing the argument
* ref, Object.class for the expectedType,
* and null, for the fnMapper.
*
*
* @param ref Value binding expression for which to return a
* {@link ValueBinding} instance
*
* @throws NullPointerException if ref
* is null
* @throws ReferenceSyntaxException if the specified ref
* has invalid syntax
*
* @deprecated This has been replaced by calling {@link
* #getExpressionFactory} then {@link
* ExpressionFactory#createValueExpression}.
*/
public abstract ValueBinding createValueBinding(String ref)
throws ReferenceSyntaxException;
/**
* If {@link javax.faces.context.FacesContext#isProcessingEvents()} is
* true and there are one or more listeners
* for events of the type represented by
* systemEventClass, call those listeners, passing
* source as the source of the event. The
* implementation should be as fast as possible in determining
* whether or not a listener for the given
* systemEventClass and source has been
* installed, and should return immediately once such a
* determination has been made. The implementation of
* publishEvent must honor the requirements stated in
* {@link #subscribeToEvent} regarding the storage and retrieval of
* listener instances. Specifically, if {@link
* #subscribeToEvent(Class,Class,SystemEventListener)} was called,
* the sourceClass argument must match exactly the
* Class of the source argument in the
* call to publishEvent(). The implementation must not
* do any inheritance hierarachy inspection when looking for a match
* between the sourceClass passed to {@link
* #subscribeToEvent(Class,Class,SystemEventListener)} and the
* sourceClass passed to publishEvent() in
* order to find any listeners to which the event should be
* published. In the case where the Class of the
* source argument does not match the
* Class of the sourceClass used when the
* listener was subscribed using subscribeToEvent(),
* {@link #publishEvent(FacesContext,Class,Class,Object)} can be used to
* provide the Class used to perform the listener lookup and
* match.
*
*
*
* The default implementation must implement an algorithm
* semantically equivalent to the following to locate listener
* instances and to invoke them.
*
*
*
* If the source argument implements {@link
* javax.faces.event.SystemEventListenerHolder}, call {@link
* javax.faces.event.SystemEventListenerHolder#getListenersForEventClass}
* on it, passing the systemEventClass argument. If
* the list is not empty, perform algorithm
* traverseListenerList on the list.
If any view level listeners have been installed
* by previous calls to {@link #subscribeToEvent(Class, Class,
* javax.faces.event.SystemEventListener)} on the {@link
* javax.faces.component.UIViewRoot}, perform algorithm
* traverseListenerList on the list of listeners for that
* event installed on the UIViewRoot.
If any Application level listeners have
* been installed by previous calls to {@link
* #subscribeToEvent(Class, Class,
* javax.faces.event.SystemEventListener)}, perform algorithm
* traverseListenerList on the list.
If any Application level listeners have
* been installed by previous calls to {@link
* #subscribeToEvent(Class, javax.faces.event.SystemEventListener)},
* perform algorithm traverseListenerList on the
* list.
*
* If the act of invoking the processListener method
* causes an {@link javax.faces.event.AbortProcessingException} to
* be thrown, processing of the listeners must be aborted, no
* further processing of the listeners for this event must take
* place, and the exception must be logged with
* Level.SEVERE.
*
* Algorithm traverseListenerList: For each listener in
* the list,
*
*
*
* Call {@link
* javax.faces.event.SystemEventListener#isListenerForSource}, passing the
* source argument. If this returns
* false, take no action on the listener.
Otherwise, if the event to be passed to the listener
* instances has not yet been constructed, construct the event,
* passing source as the argument to the
* one-argument constructor that takes an Object.
* This same event instance must be passed to all listener
* instances.
Call {@link javax.faces.event.SystemEvent#isAppropriateListener},
* passing the listener instance as the argument. If this
* returns false, take no action on the
* listener.
Call {@link javax.faces.event.SystemEvent#processListener},
* passing the listener instance.
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function
.
*
*
* @param context the FacesContext for the current request
* @param systemEventClass The Class of event that is
* being published.
* @param source The source for the event of type
* systemEventClass.
*
* @throws NullPointerException if either context,
* systemEventClass or source is null
*
* @since 2.0
*
*/
public void publishEvent(FacesContext context,
Class systemEventClass,
Object source) {
if (defaultApplication != null) {
defaultApplication.publishEvent(context, systemEventClass, source);
} else {
throw new UnsupportedOperationException();
}
}
/**
* This method functions exactly like
* {@link #publishEvent(FacesContext,Class,Object)}, except the run-time
* must use the argument sourceBaseType to find the matching
* listener instead of using the Class of the
* source argument.
*
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function
.
*
* @param context the FacesContext for the current request
* @param systemEventClass The Class of event that is
* being published.
* @param sourceBaseType The Class of the source event
* that must be used to lookup the listener to which this event must
* be published. If this argument is null the return
* from source.getClass() must be used as the
* sourceBaseType.
* @param source The source for the event of type
* systemEventClass.
*
* @throws NullPointerException if any arguments are null
*
* @since 2.0
*/
public void publishEvent(FacesContext context,
Class systemEventClass,
Class sourceBaseType,
Object source) {
if (defaultApplication != null) {
defaultApplication.publishEvent(context,
systemEventClass,
sourceBaseType,
source);
} else {
throw new UnsupportedOperationException();
}
}
/**
* Install the listener instance
* referenced by argument listener into the
* application as a listener for events of type
* systemEventClass that originate from objects of type
* sourceClass.
*
*
*
* If argument sourceClass is non-null,
* sourceClass and systemEventClass must be
* used to store the argument listener in the application in
* such a way that the listener can be quickly looked
* up by the implementation of {@link #publishEvent} given
* systemEventClass and an instance of the
* Class referenced by sourceClass. If
* argument sourceClass is null, the
* listener must be discoverable by the implementation
* of {@link #publishEvent} given only systemEventClass.
*
*
*
*
* @param systemEventClass the Class of event for which
* listener must be fired.
*
* @param sourceClass the Class of the instance which
* causes events of type systemEventClass to be fired.
* May be null.
*
* @param listener the implementation of {@link
* javax.faces.event.SystemEventListener} whose {@link
* javax.faces.event.SystemEventListener#processEvent} method must be called when
* events of type systemEventClass are fired.
*
* @throws NullPointerException if any combination of
* systemEventClass, or listener are
* null.
*
* @since 2.0
*/
public void subscribeToEvent(Class systemEventClass,
Class sourceClass,
SystemEventListener listener) {
if (defaultApplication != null) {
defaultApplication.subscribeToEvent(systemEventClass,
sourceClass,
listener);
} else {
throw new UnsupportedOperationException();
}
}
/**
* Install the listener instance
* referenced by argument listener into application as
* a listener for events of type systemEventClass. The
* default implementation simply calls through to {@link
* #subscribeToEvent(Class, Class,
* javax.faces.event.SystemEventListener)} passing null
* as the sourceClass argument
*
* A default implementation is provided
* that throws UnsupportedOperationException so that
* users that decorate Application can continue to
* function
.
* @param systemEventClass the Class of event for which
* listener must be fired.
* @param listener the implementation of {@link
* javax.faces.event.SystemEventListener} whose {@link
* javax.faces.event.SystemEventListener#processEvent} method must
* be called when events of type systemEventClass are
* fired.
* @throws NullPointerException if any combination of
* systemEventClass, or listener are
* null.
*
* @since 2.0
*/
public void subscribeToEvent(Class systemEventClass,
SystemEventListener listener) {
if (defaultApplication != null) {
defaultApplication.subscribeToEvent(systemEventClass, listener);
} else {
throw new UnsupportedOperationException();
}
}
/**
* Remove the listener instance
* referenced by argument listener from the application
* as a listener for events of type
* systemEventClass that originate from objects of type
* sourceClass. See {@link
* #subscribeToEvent(Class, Class,
* javax.faces.event.SystemEventListener)} for the specification
* of how the listener is stored, and therefore, how it must be
* removed.
*
* @param systemEventClass the Class of event for which
* listener must be fired.
*
* @param sourceClass the Class of the instance which
* causes events of type systemEventClass to be fired.
* May be null.
*
* @param listener the implementation of {@link
* javax.faces.event.SystemEventListener} to remove from the internal data
* structure.
*
* @throws NullPointerException if any combination of
* context,
* systemEventClass, or listener are
* null.
*
* @since 2.0
*/
public void unsubscribeFromEvent(Class systemEventClass,
Class sourceClass,
SystemEventListener listener) {
if (defaultApplication != null) {
defaultApplication.unsubscribeFromEvent(systemEventClass,
sourceClass,
listener);
} else {
throw new UnsupportedOperationException();
}
}
/**
* Remove the listener instance
* referenced by argument listener from the application
* as a listener for events of type systemEventClass. The
* default implementation simply calls through to {@link #unsubscribeFromEvent(Class, javax.faces.event.SystemEventListener)}
* passing null as the sourceClass argument
*
* @param systemEventClass the Class of event for which
* listener must be fired.
*
* @param listener the implementation of {@link
* javax.faces.event.SystemEventListener} to remove from the internal data
* structure.
*
* @throws NullPointerException if any combination of
* context, systemEventClass, or
* listener are
* null. http://java.sun.com/javaee/javaserverfaces/reference/api/index.html
*
* @since 2.0
*/
public void unsubscribeFromEvent(Class systemEventClass,
SystemEventListener listener) {
if (defaultApplication != null) {
defaultApplication.unsubscribeFromEvent(systemEventClass, listener);
} else {
throw new UnsupportedOperationException();
}
}
}