core-client/src/main/java/org/glassfish/jersey/client/ClientBackgroundScheduler.java

/*
 * Copyright (c) 2017, 2019 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.jersey.client;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import javax.inject.Qualifier;

/**
 * Injection qualifier that can be used to inject an {@link java.util.concurrent.ScheduledExecutorService}
 * instance used by Jersey client runtime to schedule background tasks.
 * <p>
 * The scheduled executor service instance injected using this injection qualifier can be customized
 * by registering a custom {@link org.glassfish.jersey.spi.ScheduledExecutorServiceProvider} implementation that is itself
 * annotated with the {@code &#64;ClientAsyncExecutor} annotation.
 * </p>
 *
 * @author Adam Lindenthal
 * @see ClientBackgroundSchedulerLiteral
 * @since 2.26
 */
@Target({ElementType.PARAMETER, ElementType.FIELD, ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@Qualifier
public @interface ClientBackgroundScheduler {

}