org.glassfish.hk2.api.Immediate Maven / Gradle / Ivy
/*
* Copyright (c) 2013, 2018 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 org.glassfish.hk2.api;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import javax.inject.Scope;
/**
* Immediate is a scope that operates like {@link javax.inject.Singleton} scope, except that instances are created as soon as their
* corresponding {@link Descriptor}s are added. When the corresponding {@link Descriptor} is removed from the
* locator the Immediate scope service is destroyed. In particular Immediate scope services are not destroyed if
* the {@link ServiceHandle#destroy()} method is called. Care should be taken with the services injected into
* an immediate service, as they also become virtual immediate services
*
* The Immediate scope is not automatically handled by a new ServiceLocator. In order to enable the Immediate scope
* the user can either add an implementation of {@link Context} which handles it or it can use the
* {@link org.glassfish.hk2.utilities.ServiceLocatorUtilities#enableImmediateScope(ServiceLocator)} method.
*
* @author jwells
*
*/
@Documented
@Retention(RUNTIME)
@Scope
@Target( { TYPE, METHOD })
public @interface Immediate {
}