jakarta.faces.lifecycle.LifecycleFactory Maven / Gradle / Ivy
/*
* 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 java.util.Iterator;
import jakarta.faces.FacesWrapper;
/**
*
* LifecycleFactory is a factory object that creates
* (if needed) and returns {@link Lifecycle} instances. Implementations of Jakarta Faces must provide at least a
* default implementation of {@link Lifecycle}. Advanced implementations (or external third party libraries) MAY provide
* additional {@link Lifecycle} implementations (keyed by lifecycle identifiers) for performing different types of
* request processing on a per-request basis.
*
*
*
* There must be one LifecycleFactory instance per web application that is utilizing Jakarta Faces.
* This instance can be acquired, in a portable manner, by calling:
*
*
*
* LifecycleFactory factory = (LifecycleFactory) FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
*
*
*
* Usage: extend this class and push the implementation being wrapped to the constructor and use {@link #getWrapped} to
* access the instance being wrapped.
*
*/
public abstract class LifecycleFactory implements FacesWrapper {
private LifecycleFactory wrapped;
/**
* @deprecated Use the other constructor taking the implementation being wrapped.
*/
@Deprecated
public LifecycleFactory() {
}
/**
*
* If this factory has been decorated, the implementation doing the decorating should push the implementation being
* wrapped to this constructor. The {@link #getWrapped()} will then return the implementation being wrapped.
*
*
* @param wrapped The implementation being wrapped.
*/
public LifecycleFactory(LifecycleFactory wrapped) {
this.wrapped = wrapped;
}
/**
*
* If this factory has been decorated, the implementation doing the decorating may override this method to provide
* access to the implementation being wrapped.
*
*
* @since 2.0
*/
@Override
public LifecycleFactory getWrapped() {
return wrapped;
}
/**
*
* The lifecycle identifier for the default {@link Lifecycle} instance for this Jakarta Faces implementation.
*
*/
public static final String DEFAULT_LIFECYCLE = "DEFAULT";
/**
*
* Register a new {@link Lifecycle} instance, associated with the specified lifecycleId, to be supported by
* this LifecycleFactory. This method may be called at any time, and makes the corresponding
* {@link Lifecycle} instance available throughout the remaining lifetime of this web application.
*
*
* @param lifecycleId Identifier of the new {@link Lifecycle}
* @param lifecycle {@link Lifecycle} instance that we are registering
*
* @throws IllegalArgumentException if a {@link Lifecycle} with the specified lifecycleId has already been
* registered
* @throws NullPointerException if lifecycleId or lifecycle is null
*/
public abstract void addLifecycle(String lifecycleId, Lifecycle lifecycle);
/**
*
* Create (if needed) and return a {@link Lifecycle} instance for the specified lifecycle identifier. The set of
* available lifecycle identifiers is available via the getLifecycleIds() method.
*
*
*
* Each call to getLifecycle() for the same lifecycleId, from within the same web application,
* must return the same {@link Lifecycle} instance.
*
*
* @param lifecycleId Lifecycle identifier of the requested {@link Lifecycle} instance
*
* @throws IllegalArgumentException if no {@link Lifecycle} instance can be returned for the specified identifier
* @throws NullPointerException if lifecycleId is null
*
* @return the {@code Lifecycle} instance
*/
public abstract Lifecycle getLifecycle(String lifecycleId);
/**
*
* Return an Iterator over the set of lifecycle identifiers supported by this factory. This set must
* include the value specified by LifecycleFactory.DEFAULT_LIFECYCLE.
*
*
* @return an {@code Iterator} over the set of lifecycle identifiers supported by this factory
*/
public abstract Iterator getLifecycleIds();
}