org.hibernate.engine.OptimisticLockStyle Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.engine;
/**
* Describes how an entity should be optimistically locked.
*
* @author Steve Ebersole
*/
public enum OptimisticLockStyle {
/**
* no optimistic locking
*/
NONE( -1 ),
/**
* use a dedicated version column
*/
VERSION( 0 ),
/**
* dirty columns are compared
*/
DIRTY( 1 ),
/**
* all columns are compared
*/
ALL( 2 );
private final int oldCode;
private OptimisticLockStyle(int oldCode) {
this.oldCode = oldCode;
}
public int getOldCode() {
return oldCode;
}
/**
* Given an old code (one of the int constants from Cascade), interpret it as one of the new enums.
*
* @param oldCode The old int constant code
*
* @return The interpreted enum value
*
* @throws IllegalArgumentException If the code did not match any legacy constant.
*/
public static OptimisticLockStyle interpretOldCode(int oldCode) {
switch ( oldCode ) {
case -1: {
return NONE;
}
case 0: {
return VERSION;
}
case 1: {
return DIRTY;
}
case 2: {
return ALL;
}
default: {
throw new IllegalArgumentException( "Illegal legacy optimistic lock style code :" + oldCode );
}
}
}
}