javax.ejb.LockType Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (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.dev.java.net/public/CDDLv1.0.html or
* glassfish/bootstrap/legal/CDDLv1.0.txt.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at glassfish/bootstrap/legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* you own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
*/
package javax.ejb;
/**
* Concurrency lock type for Singletons with container-managed concurrency.
*
*/
public enum LockType {
/**
* For read-only operations. Allows simultaneous access to methods
* designated as READ, as long as no WRITE lock is held.
*/
READ,
/**
* For exclusive access to the bean instance. A WRITE lock can only
* be acquired when no other method with either a READ or WRITE lock
* is currently held.
*/
WRITE
}