Java tutorial
/******************************************************************************* * Copyright (c) 2008 - 2015 Oracle Corporation. 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. * * Contributors: * Petros Splinakis - Java Persistence 2.2 * Linda DeMichiel - Java Persistence 2.1 * Linda DeMichiel - Java Persistence 2.0 * ******************************************************************************/ package javax.persistence; import java.lang.annotation.Repeatable; import java.lang.annotation.Target; import java.lang.annotation.Retention; import static java.lang.annotation.ElementType.TYPE; import static java.lang.annotation.RetentionPolicy.RUNTIME; /** * Specifies the mapping of the result of a native SQL query or stored * procedure. * * <pre> * Example: * * Query q = em.createNativeQuery( * "SELECT o.id AS order_id, " + * "o.quantity AS order_quantity, " + * "o.item AS order_item, " + * "i.name AS item_name, " + * "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")})}, * columns={ * @ColumnResult(name="item_name")} * ) * </pre> * * @see Query * @see StoredProcedureQuery * @see NamedNativeQuery * @see NamedStoredProcedureQuery * * @since Java Persistence 1.0 */ @Repeatable(SqlResultSetMappings.class) @Target({ TYPE }) @Retention(RUNTIME) public @interface SqlResultSetMapping { /** * The name given to the result set mapping, and used to refer * to it in the methods of the {@link Query} and * {@link StoredProcedureQuery} APIs. */ String name(); /** Specifies the result set mapping to entities. */ EntityResult[] entities() default {}; /** * Specifies the result set mapping to constructors. * @since Java Persistence 2.1 */ ConstructorResult[] classes() default {}; /** Specifies the result set mapping to scalar values. */ ColumnResult[] columns() default {}; }