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The Java Persistence API (JPA) : a standard interface-based Java model abstraction of persistence, developed by the JCP.

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/*
 * Copyright (c) 2008, 2009, 2011 Oracle, Inc. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.  The Eclipse Public License is available
 * at http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License
 * is available at http://www.eclipse.org/org/documents/edl-v10.php.
 */
package javax.persistence;

/**
 * Used as the value of the
 * javax.persistence.cache.storeMode property to specify
 * the behavior when data is read from the database and when data is
 * committed into the database.
 *
 * @since Java Persistence 2.0
 */
public enum CacheStoreMode {

    /**
     * Insert/update entity data into cache when read
     * from database and when committed into database:
     * this is the default behavior. Does not force refresh
     * of already cached items when reading from database.
     */
    USE,

    /**
     * Don't insert into cache.
     */
    BYPASS,

    /**
     * Insert/update entity data into cache when read
     * from database and when committed into database.
     * Forces refresh of cache for items read from database.
     */
    REFRESH
}