All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.sleepycat.je.ForeignKeyDeleteAction Maven / Gradle / Ivy

The newest version!
/*-
 * Copyright (C) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
 *
 * This file was distributed by Oracle as part of a version of Oracle Berkeley
 * DB Java Edition made available at:
 *
 * http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html
 *
 * Please see the LICENSE file included in the top-level directory of the
 * appropriate version of Oracle Berkeley DB Java Edition for a copy of the
 * license and additional information.
 */

package com.sleepycat.je;

/**
 * The action taken when a referenced record in the foreign key database is
 * deleted.
 *
 * 

The delete action applies to a secondary database that is configured to * have a foreign key integrity constraint. The delete action is specified by * calling {@link SecondaryConfig#setForeignKeyDeleteAction}.

* *

When a record in the foreign key database is deleted, it is checked to * see if it is referenced by any record in the associated secondary database. * If the key is referenced, the delete action is applied. By default, the * delete action is {@link #ABORT}.

* * @see SecondaryConfig */ public enum ForeignKeyDeleteAction { /** * When a referenced record in the foreign key database is deleted, abort * the transaction by throwing a {@link DeleteConstraintException}. */ ABORT, /** * When a referenced record in the foreign key database is deleted, delete * the primary database record that references it. */ CASCADE, /** * When a referenced record in the foreign key database is deleted, set the * reference to null in the primary database record that references it, * thereby deleting the secondary key. @see ForeignKeyNullifier @see * ForeignMultiKeyNullifier */ NULLIFY; @Override public String toString() { return "ForeignKeyDeleteAction." + name(); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy