javax.faces.bean.ManagedBean Maven / Gradle / Ivy
Show all versions of javax.faces-api Show documentation
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2016 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.faces.bean;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.Inherited;
/**
* The presence of this annotation on a class
* automatically registers the class with the runtime as a managed bean class.
* Classes must be scanned for the presence of this annotation at application
* startup, before any requests have been serviced.
*
*
*
*
* The value of the {@link #name} attribute is taken to be the
* managed-bean-name. If the value of the name
* attribute is unspecified or is the empty String
, the
* managed-bean-name is derived from taking the unqualified class name
* portion of the fully qualified class name and converting the first character
* to lower case. For example, if the ManagedBean
annotation is on
* a class with the fully qualified class name com.foo.Bean
, and
* there is no
* name attribute on the annotation, the
* managed-bean-name is taken to be bean
. The fully
* qualified class name of the class to which this annotation is attached is
* taken to be the managed-bean-class.
*
*
* The scope of the managed bean is declared using one of {@link
* NoneScoped}, {@link RequestScoped}, {@link ViewScoped}, {@link
* SessionScoped}, {@link ApplicationScoped}, or {@link CustomScoped}
* annotations. If the scope annotations are omitted, the bean must be handled
* as if the {@link RequestScoped} annotation is present.
*
*
* If the value of the {@link #eager} attribute is true
, and the
* managed-bean-scope
value is "application", the runtime must
* instantiate this class when the application starts. This instantiation and
* storing of the instance must happen before any requests are serviced. If
* eager is unspecified or false
, or the
* managed-bean-scope
is something other than "application", the
* default "lazy" instantiation and scoped storage of the managed bean
* happens.
*
*
* When the runtime processes this annotation, if a managed bean exists whose
* name is equal to the derived managed-bean-name, a
* FacesException
must be thrown and the application must not be
* placed in service.
*
*
* A class tagged with this annotation must have a public zero-argument
* constructor. If such a constructor is not defined on the class, a
* FacesException
must be thrown and the application must not be
* placed in service.
*
*
*
* @since 2.0
* @deprecated This has been replaced by the Managed Beans specification in
* general and specifically the dependency injection, scopes and naming
* from the CDI specification. Note that the eager attribute
* for application scoped beans is replaced specifically by observing
* the {@code javax.enterprise.context.Initialized} event for
* {@code javax.enterprise.context.ApplicationScoped}. See 6.7.3 of the CDI
* spec for further details.
*
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Inherited
@Deprecated
public @interface ManagedBean {
/**
* Taken to be the
* managed-bean-name
. See class documentation for details.
*
* @return the managed bean name.
*/
String name() default "";
/**
* Taken to be the value of the
* eager
attribute of the managed-bean
. See class
* documentation for details.
*
* @return the eager attribute of the managed bean.
*/
boolean eager() default false;
}