javax.persistence.FetchType Maven / Gradle / Ivy
/*
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* 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
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
*/
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. In particular, lazy fetching might only be
* available for {@link Basic} mappings for which property-based
* access is used.
*
*
* Example:
* @Basic(fetch=LAZY)
* protected String getName() { return name; }
*
*
* @since Java Persistence 1.0
*/
public enum FetchType {
/** Defines that data can be lazily fetched */
LAZY,
/** Defines that data must be eagerly fetched */
EAGER
}