jakarta.faces.lifecycle.Lifecycle Maven / Gradle / Ivy
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* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package jakarta.faces.lifecycle;
import jakarta.faces.FacesException;
import jakarta.faces.context.FacesContext;
import jakarta.faces.event.PhaseListener;
/**
*
* Lifecycle manages the processing of the entire lifecycle of a
* particular Jakarta Server Faces request. It is responsible for executing all of the phases that have been defined by
* the Jakarta Server Faces Specification, in the specified order, unless otherwise directed by activities that occurred
* during the execution of each phase.
*
*
*
* An instance of Lifecycle is created by calling the getLifecycle() method of
* {@link LifecycleFactory}, for a specified lifecycle identifier. Because this instance is shared across multiple
* simultaneous requests, it must be implemented in a thread-safe manner.
*
*/
public abstract class Lifecycle {
// ---------------------------------------------------------- Public Methods
/**
*
* Register a new {@link PhaseListener} instance that is interested in being notified before and after the processing
* for standard phases of the request processing lifecycle.
*
*
* @param listener The {@link PhaseListener} to be registered
*
* @throws NullPointerException if listener is null
*/
public abstract void addPhaseListener(PhaseListener listener);
/**
*
* Execute all of the phases of the request processing lifecycle, up to but not including the Render Response
* phase, as described in the Jakarta Server Faces Specification, in the specified order. The processing flow can be
* affected (by the application, by components, or by event listeners) by calls to the renderResponse() or
* responseComplete() methods of the {@link FacesContext} instance associated with the current request.
*
*
* @param context FacesContext for the request to be processed
*
* @throws FacesException if thrown during the execution of the request processing lifecycle
* @throws NullPointerException if context is null
*/
public abstract void execute(FacesContext context) throws FacesException;
/**
*
* Create or restore the {@link ClientWindow} to be used to display the {@link jakarta.faces.component.UIViewRoot} for
* this run through the lifecycle. See the class documentation for {@link ClientWindow} for an overview of the feature.
*
* If {@link jakarta.faces.context.ExternalContext#getClientWindow()} returns null, create a new instance of
* ClientWindow using the {@link ClientWindowFactory}. If the result is non-null, call
* {@link ClientWindow#decode(jakarta.faces.context.FacesContext)} on it. Store the new ClientWindow by
* calling {@link jakarta.faces.context.ExternalContext#setClientWindow(jakarta.faces.lifecycle.ClientWindow)}.
*
*
* @param context the {@link FacesContext} for this request.
*
* @since 2.2
*/
public void attachWindow(FacesContext context) {
}
/**
*
* Return the set of registered {@link PhaseListener}s for this {@link Lifecycle} instance. If there are no registered
* listeners, a zero-length array is returned.
*
*
* @return the set of registered {@link PhaseListener}s
*/
public abstract PhaseListener[] getPhaseListeners();
/**
*
* Deregister an existing {@link PhaseListener} instance that is no longer interested in being notified before and after
* the processing for standard phases of the request processing lifecycle. If no such listener instance has been
* registered, no action is taken.
*
*
* @param listener The {@link PhaseListener} to be deregistered
* @throws NullPointerException if listener is null
*/
public abstract void removePhaseListener(PhaseListener listener);
/**
*
* Execute the Render Response phase of the request processing lifecycle, unless the
* responseComplete() method has been called on the {@link FacesContext} instance associated with the
* current request.
*
*
* @param context FacesContext for the request being processed
*
* @throws FacesException if an exception is thrown during the execution of the request processing lifecycle
* @throws NullPointerException if context is null
*/
public abstract void render(FacesContext context) throws FacesException;
}