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

jakarta.persistence.FieldResult Maven / Gradle / Ivy

There is a newer version: 3.2.0
Show newest version
/*
 * Copyright (c) 2008, 2020 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 - 2.1
//     Linda DeMichiel - 2.0


package jakarta.persistence;

import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Used in conjunction with the {@link EntityResult} annotation to map columns specified 
 * in the SELECT list of a SQL query to the properties or fields of an entity class.
 *
 * 
 *
 * Example:
 *   Query q = em.createNativeQuery(
 *       "SELECT o.id AS order_id, " +
 *           "o.quantity AS order_quantity, " +
 *           "o.item AS order_item, " +
 *         "FROM Order o, Item i " +
 *         "WHERE (order_quantity > 25) AND (order_item = i.id)",
 *       "OrderResults");
 *
 *   @SqlResultSetMapping(name="OrderResults",
 *       entities={
 *           @EntityResult(entityClass=com.acme.Order.class, fields={
 *               @FieldResult(name="id", column="order_id"),
 *               @FieldResult(name="quantity", column="order_quantity"),
 *               @FieldResult(name="item", column="order_item")})
 *       })
 * 
* * @see EntityResult * @see SqlResultSetMapping * @since 1.0 */ @Target({}) @Retention(RUNTIME) public @interface FieldResult { /** Name of the persistent field or property of the class. */ String name(); /** * Name of the column in the SELECT clause - i.e., column * aliases, if applicable. */ String column(); }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy