javax.persistence.FetchType Maven / Gradle / Ivy
/*
* Copyright (c) 2008, 2018 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,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Linda DeMichiel - Java Persistence 2.1
// Linda DeMichiel - Java Persistence 2.0
package javax.persistence;
/**
* Defines strategies for fetching data from the database.
* The EAGER strategy is a requirement on the persistence
* provider runtime that data must be eagerly fetched. The
* LAZY strategy is a hint to the persistence provider
* runtime that data should be fetched lazily when it is
* first accessed. The implementation is permitted to eagerly
* fetch data for which the LAZY strategy hint has been
* specified.
*
*
* Example:
* @Basic(fetch=LAZY)
* protected String getName() { return name; }
*
*
* @see Basic
* @see ElementCollection
* @see ManyToMany
* @see OneToMany
* @see ManyToOne
* @see OneToOne
* @since Java Persistence 1.0
*/
public enum FetchType {
/** Defines that data can be lazily fetched. */
LAZY,
/** Defines that data must be eagerly fetched. */
EAGER
}