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/*
* Copyright (c) 2006, 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.ejb;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.*;
/**
* Declares a concurrency lock for a singleton session bean with container managed concurrency.
*
*
* This annotation may be specified on the bean class, the business methods of the bean class or both. Specifying the
* annotation on a business method overrides the value specified at class level, if any.
*
*
* If this annotation is not used, a value of Lock(WRITE) is assumed.
*
* @since EJB 3.1
*/
@Target({ TYPE, METHOD })
@Retention(RUNTIME)
public @interface Lock {
/**
*
value.
*
* @return a {@link jakarta.ejb.LockType} object.
*/
LockType value() default LockType.WRITE;
}